Release 1.19

Closes #297

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+github: chylex
+patreon: chylex
+ko_fi: chylex

Application/LockHandler.cs

@@ -0,0 +1,58 @@
+using System;
+using System.ComponentModel;
+using System.Diagnostics;
+using TweetDuck.Utils;
+using TweetLib.Core.Application;
+
+namespace TweetDuck.Application{
+    class LockHandler : IAppLockHandler{
+        private const int WaitRetryDelay = 250;
+        private const int RestoreFailTimeout = 2000;
+        private const int CloseNaturallyTimeout = 10000;
+        private const int CloseKillTimeout = 5000;
+
+        bool IAppLockHandler.RestoreProcess(Process process){
+            if (process.MainWindowHandle == IntPtr.Zero){ // restore if the original process is in tray
+                NativeMethods.BroadcastMessage(Program.WindowRestoreMessage, (uint)process.Id, 0);
+
+                if (WindowsUtils.TrySleepUntil(() => CheckProcessExited(process) || (process.MainWindowHandle != IntPtr.Zero && process.Responding), RestoreFailTimeout, WaitRetryDelay)){
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        bool IAppLockHandler.CloseProcess(Process process){
+            try{
+                if (process.CloseMainWindow()){
+                    // ReSharper disable once AccessToDisposedClosure
+                    WindowsUtils.TrySleepUntil(() => CheckProcessExited(process), CloseNaturallyTimeout, WaitRetryDelay);
+                }
+
+                if (!process.HasExited){
+                    process.Kill();
+                    // ReSharper disable once AccessToDisposedClosure
+                    WindowsUtils.TrySleepUntil(() => CheckProcessExited(process), CloseKillTimeout, WaitRetryDelay);
+                }
+
+                if (process.HasExited){
+                    process.Dispose();
+                    return true;
+                }
+                else{
+                    return false;
+                }
+            }catch(Exception ex) when (ex is InvalidOperationException || ex is Win32Exception){
+                bool hasExited = CheckProcessExited(process);
+                process.Dispose();
+                return hasExited;
+            }
+        }
+
+        private static bool CheckProcessExited(Process process){
+            process.Refresh();
+            return process.HasExited;
+        }
+    }
+}

Application/SystemHandler.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using TweetLib.Core.Application;
+
+namespace TweetDuck.Application{
+    class SystemHandler : IAppSystemHandler{
+        void IAppSystemHandler.OpenAssociatedProgram(string path){
+            try{
+                using(Process.Start(new ProcessStartInfo{
+                    FileName = path,
+                    ErrorDialog = true
+                })){}
+            }catch(Exception e){
+                Program.Reporter.HandleException("Error Opening Program", "Could not open the associated program for " + path, true, e);
+            }
+        }
+
+        void IAppSystemHandler.OpenFileExplorer(string path){
+            if (File.Exists(path)){
+                using(Process.Start("explorer.exe", "/select,\"" + path.Replace('/', '\\') + "\"")){}
+            }
+            else if (Directory.Exists(path)){
+                using(Process.Start("explorer.exe", '"' + path.Replace('/', '\\') + '"')){}
+            }
+        }
+    }
+}

Browser/Adapters/CefScriptExecutor.cs

@@ -0,0 +1,41 @@
+using System.IO;
+using CefSharp;
+using TweetLib.Core.Browser;
+
+namespace TweetDuck.Browser.Adapters{
+    sealed class CefScriptExecutor : IScriptExecutor{
+        private readonly IWebBrowser browser;
+
+        public CefScriptExecutor(IWebBrowser browser){
+            this.browser = browser;
+        }
+
+        public void RunFunction(string name, params object[] args){
+            browser.ExecuteScriptAsync(name, args);
+        }
+
+        public void RunScript(string identifier, string script){
+            using IFrame frame = browser.GetMainFrame();
+            RunScript(frame, script, identifier);
+        }
+
+        public bool RunFile(string file){
+            using IFrame frame = browser.GetMainFrame();
+            return RunFile(frame, file);
+        }
+
+        // Helpers
+
+        public static void RunScript(IFrame frame, string script, string identifier){
+            if (script != null){
+                frame.ExecuteJavaScriptAsync(script, identifier, 1);
+            }
+        }
+
+        public static bool RunFile(IFrame frame, string file){
+            string script = Program.Resources.Load(file);
+            RunScript(frame, script, "root:" + Path.GetFileNameWithoutExtension(file));
+            return script != null;
+        }
+    }
+}

Browser/Bridge/PropertyBridge.cs

@@ -1,34 +1,38 @@
 using System.Text;
 using TweetDuck.Configuration;
+using TweetLib.Core;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Core.Bridge{
+namespace TweetDuck.Browser.Bridge{
     static class PropertyBridge{
         public enum Environment{
             Browser, Notification
         }
 
         public static string GenerateScript(Environment environment){
-            string Bool(bool value) => value ? "true;" : "false;";
-            string Str(string value) => '"'+value+"\";";
+            static string Bool(bool value) => value ? "true;" : "false;";
+            static string Str(string value) => $"\"{value}\";";
 
             UserConfig config = Program.Config.User;
-            StringBuilder build = new StringBuilder(128).Append("(function(x){");
+            StringBuilder build = new StringBuilder(384).Append("(function(x){");
 
             build.Append("x.expandLinksOnHover=").Append(Bool(config.ExpandLinksOnHover));
             
             if (environment == Environment.Browser){
+                build.Append("x.focusDmInput=").Append(Bool(config.FocusDmInput));
                 build.Append("x.openSearchInFirstColumn=").Append(Bool(config.OpenSearchInFirstColumn));
                 build.Append("x.keepLikeFollowDialogsOpen=").Append(Bool(config.KeepLikeFollowDialogsOpen));
                 build.Append("x.muteNotifications=").Append(Bool(config.MuteNotifications));
                 build.Append("x.notificationMediaPreviews=").Append(Bool(config.NotificationMediaPreviews));
                 build.Append("x.translationTarget=").Append(Str(config.TranslationTarget));
+                build.Append("x.firstDayOfWeek=").Append(config.CalendarFirstDay == -1 ? LocaleUtils.GetJQueryDayOfWeek(Lib.Culture.DateTimeFormat.FirstDayOfWeek) : config.CalendarFirstDay);
             }
 
             if (environment == Environment.Notification){
                 build.Append("x.skipOnLinkClick=").Append(Bool(config.NotificationSkipOnLinkClick));
             }
             
-            return build.Append("})(window.$TDX=window.$TDX||{})").ToString();
+            return build.Append("})(window.$TDX=window.$TDX||{});if(window.TDGF_onPropertiesUpdated)window.TDGF_onPropertiesUpdated()").ToString();
         }
     }
 }

Browser/Bridge/TweetDeckBridge.cs

@@ -1,18 +1,23 @@
-using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Management;
-using TweetDuck.Core.Notification;
-using TweetDuck.Core.Other;
-using TweetDuck.Core.Utils;
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using CefSharp;
+using TweetDuck.Browser.Handling;
+using TweetDuck.Browser.Notification;
+using TweetDuck.Controls;
+using TweetDuck.Dialogs;
+using TweetDuck.Management;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Notifications;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Core.Bridge{
+namespace TweetDuck.Browser.Bridge{
+    [SuppressMessage("ReSharper", "UnusedMember.Global")]
     class TweetDeckBridge{
-        public static string FontSize { get; private set; }
-        public static string NotificationHeadLayout { get; private set; }
-        public static readonly ContextInfo ContextInfo = new ContextInfo();
-
         public static void ResetStaticProperties(){
-            FontSize = NotificationHeadLayout = null;
+            FormNotificationBase.FontSize = null;
+            FormNotificationBase.HeadLayout = null;
         }
 
         private readonly FormBrowser form;
@@ -37,24 +42,22 @@ namespace TweetDuck.Core.Bridge{
             }
             
             public void OnIntroductionClosed(bool showGuide, bool allowDataCollection){
-                form.InvokeAsyncSafe(() => {
-                    form.OnIntroductionClosed(showGuide, allowDataCollection);
-                });
+                form.InvokeAsyncSafe(() => form.OnIntroductionClosed(showGuide, allowDataCollection));
             }
 
             public void LoadNotificationLayout(string fontSize, string headLayout){
                 form.InvokeAsyncSafe(() => {
-                    FontSize = fontSize;
-                    NotificationHeadLayout = headLayout;
+                    FormNotificationBase.FontSize = fontSize;
+                    FormNotificationBase.HeadLayout = headLayout;
                 });
             }
 
             public void SetRightClickedLink(string type, string url){
-                ContextInfo.SetLink(type, url);
+                ContextMenuBase.CurrentInfo.SetLink(type, url);
             }
 
             public void SetRightClickedChirp(string tweetUrl, string quoteUrl, string chirpAuthors, string chirpImages){
-                ContextInfo.SetChirp(tweetUrl, quoteUrl, chirpAuthors, chirpImages);
+                ContextMenuBase.CurrentInfo.SetChirp(tweetUrl, quoteUrl, chirpAuthors, chirpImages);
             }
 
             public void DisplayTooltip(string text){
@@ -85,7 +88,7 @@ namespace TweetDuck.Core.Bridge{
         public void OnTweetPopup(string columnId, string chirpId, string columnName, string tweetHtml, int tweetCharacters, string tweetUrl, string quoteUrl){
             notification.InvokeAsyncSafe(() => {
                 form.OnTweetNotification();
-                notification.ShowNotification(new TweetNotification(columnId, chirpId, columnName, tweetHtml, tweetCharacters, tweetUrl, quoteUrl));
+                notification.ShowNotification(new DesktopNotification(columnId, chirpId, columnName, tweetHtml, tweetCharacters, tweetUrl, quoteUrl));
             });
         }
 
@@ -100,31 +103,50 @@ namespace TweetDuck.Core.Bridge{
             form.InvokeAsyncSafe(() => form.OnTweetScreenshotReady(html, width));
         }
 
-        public void PlayVideo(string url, string username){
-            form.InvokeAsyncSafe(() => form.PlayVideo(url, username));
+        public void PlayVideo(string videoUrl, string tweetUrl, string username, IJavascriptCallback callShowOverlay){
+            form.InvokeAsyncSafe(() => form.PlayVideo(videoUrl, tweetUrl, username, callShowOverlay));
+        }
+        
+        public void StopVideo(){
+            form.InvokeAsyncSafe(form.StopVideo);
         }
 
         public void FixClipboard(){
-            form.InvokeAsyncSafe(WindowsUtils.ClipboardStripHtmlStyles);
+            form.InvokeAsyncSafe(ClipboardManager.StripHtmlStyles);
         }
 
         public void OpenBrowser(string url){
             form.InvokeAsyncSafe(() => BrowserUtils.OpenExternalBrowser(url));
         }
 
+        public void MakeGetRequest(string url, IJavascriptCallback onSuccess, IJavascriptCallback onError){
+            Task.Run(async () => {
+                var client = WebUtils.NewClient(BrowserUtils.UserAgentVanilla);
+
+                try{
+                    var result = await client.DownloadStringTaskAsync(url);
+                    await onSuccess.ExecuteAsync(result);
+                }catch(Exception e){
+                    await onError.ExecuteAsync(e.Message);
+                }finally{
+                    onSuccess.Dispose();
+                    onError.Dispose();
+                    client.Dispose();
+                }
+            });
+        }
+
         public int GetIdleSeconds(){
             return NativeMethods.GetIdleSeconds();
         }
 
         public void Alert(string type, string contents){
-            MessageBoxIcon icon;
-
-            switch(type){
-                case "error": icon = MessageBoxIcon.Error; break;
-                case "warning": icon = MessageBoxIcon.Warning; break;
-                case "info": icon = MessageBoxIcon.Information; break;
-                default: icon = MessageBoxIcon.None; break;
-            }
+            MessageBoxIcon icon = type switch{
+                "error"   => MessageBoxIcon.Error,
+                "warning" => MessageBoxIcon.Warning,
+                "info"    => MessageBoxIcon.Information,
+                _         => MessageBoxIcon.None
+            };
 
             FormMessage.Show("TweetDuck Browser Message", contents, icon, FormMessage.OK);
         }

Browser/Bridge/UpdateBridge.cs

@@ -1,9 +1,11 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Updates;
+using TweetDuck.Controls;
+using TweetLib.Core.Systems.Updates;
 
-namespace TweetDuck.Core.Bridge{
+namespace TweetDuck.Browser.Bridge{
+    [SuppressMessage("ReSharper", "UnusedMember.Global")]
     class UpdateBridge{
         private readonly UpdateHandler updates;
         private readonly Control sync;
@@ -11,7 +13,6 @@ namespace TweetDuck.Core.Bridge{
         private UpdateInfo nextUpdate = null;
 
         public event EventHandler<UpdateInfo> UpdateAccepted;
-        public event EventHandler<UpdateInfo> UpdateDelayed;
         public event EventHandler<UpdateInfo> UpdateDismissed;
 
         public UpdateBridge(UpdateHandler updates, Control sync){
@@ -54,10 +55,6 @@ namespace TweetDuck.Core.Bridge{
             HandleInteractionEvent(UpdateAccepted);
         }
 
-        public void OnUpdateDelayed(){
-            HandleInteractionEvent(UpdateDelayed);
-        }
-
         public void OnUpdateDismissed(){
             HandleInteractionEvent(UpdateDismissed);
 

Browser/Data/ContextInfo.cs

@@ -1,8 +1,8 @@
 using System;
 using CefSharp;
-using TweetDuck.Core.Utils;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Core.Management{
+namespace TweetDuck.Browser.Data{
     sealed class ContextInfo{
         private LinkInfo link;
         private ChirpInfo? chirp;
@@ -107,7 +107,7 @@ namespace TweetDuck.Core.Management{
                 private string unsafeLinkUrl = string.Empty;
                 private string mediaUrl = string.Empty;
 
-                private ChirpInfo chirp = default(ChirpInfo);
+                private ChirpInfo chirp = default;
 
                 public void AddContext(IContextMenuParams parameters){
                     ContextMenuType flags = parameters.TypeFlags;

Browser/Data/ResourceHandlers.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Concurrent;
+using CefSharp;
+
+namespace TweetDuck.Browser.Data{
+    sealed class ResourceHandlers{
+        private readonly ConcurrentDictionary<string, IResourceHandler> handlers = new ConcurrentDictionary<string, IResourceHandler>(StringComparer.OrdinalIgnoreCase);
+
+        public bool HasHandler(IRequest request){
+            return handlers.ContainsKey(request.Url);
+        }
+
+        public IResourceHandler GetHandler(IRequest request){
+            return handlers.TryGetValue(request.Url, out var handler) ? handler : null;
+        }
+
+        public bool Register(string url, IResourceHandler handler){
+            if (Uri.TryCreate(url, UriKind.Absolute, out Uri uri)){
+                handlers.AddOrUpdate(uri.AbsoluteUri, handler, (key, prev) => handler);
+                return true;
+            }
+
+            return false;
+        }
+
+        public bool Register(ResourceLink link){
+            return Register(link.Url, link.Handler);
+        }
+
+        public bool Unregister(string url){
+            return handlers.TryRemove(url, out IResourceHandler _);
+        }
+
+        public bool Unregister(ResourceLink link){
+            return Unregister(link.Url);
+        }
+    }
+}

Browser/Data/ResourceLink.cs

@@ -1,6 +1,6 @@
 using CefSharp;
 
-namespace TweetDuck.Data{
+namespace TweetDuck.Browser.Data{
     sealed class ResourceLink{
         public string Url { get; }
         public IResourceHandler Handler { get; }

Browser/Data/WindowState.cs

@@ -1,10 +1,10 @@
 using System.Drawing;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Utils;
-using TweetDuck.Data.Serialization;
+using TweetDuck.Controls;
+using TweetLib.Core.Serialization.Converters;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Data{
+namespace TweetDuck.Browser.Data{
     sealed class WindowState{
         private Rectangle rect;
         private bool isMaximized;

Browser/FormBrowser.Designer.cs

@@ -1,21 +1,10 @@
-namespace TweetDuck.Core {
+namespace TweetDuck.Browser {
     sealed partial class FormBrowser {
         /// <summary>
         /// Required designer variable.
         /// </summary>
         private System.ComponentModel.IContainer components = null;
 
-        /// <summary>
-        /// Clean up any resources being used.
-        /// </summary>
-        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
-        protected override void Dispose(bool disposing) {
-            if (disposing && (components != null)) {
-                components.Dispose();
-            }
-            base.Dispose(disposing);
-        }
-
         #region Windows Form Designer generated code
 
         /// <summary>
@@ -24,7 +13,7 @@
         /// </summary>
         private void InitializeComponent() {
             this.components = new System.ComponentModel.Container();
-            this.trayIcon = new TweetDuck.Core.Other.TrayIcon(this.components);
+            this.trayIcon = new TrayIcon(this.components);
             this.toolTip = new System.Windows.Forms.ToolTip(this.components);
             this.timerResize = new System.Windows.Forms.Timer(this.components);
             this.SuspendLayout();
@@ -38,10 +27,10 @@
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.BackColor = TweetDuck.Core.Utils.TwitterUtils.BackgroundColor;
+            this.BackColor = TweetDuck.Utils.TwitterUtils.BackgroundColor;
             this.ClientSize = new System.Drawing.Size(1008, 730);
             this.Icon = Properties.Resources.icon;
-            this.Location = TweetDuck.Core.Controls.ControlExtensions.InvisibleLocation;
+            this.Location = TweetDuck.Controls.ControlExtensions.InvisibleLocation;
             this.MinimumSize = new System.Drawing.Size(348, 424);
             this.Name = "FormBrowser";
             this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
@@ -57,7 +46,7 @@
 
         #endregion
 
-        private TweetDuck.Core.Other.TrayIcon trayIcon;
+        private TrayIcon trayIcon;
         private System.Windows.Forms.ToolTip toolTip;
         private System.Windows.Forms.Timer timerResize;
     }

Browser/FormBrowser.cs

@@ -1,24 +1,29 @@
 using System;
+using System.Diagnostics;
 using System.Drawing;
+using System.IO;
+using System.Threading.Tasks;
 using System.Windows.Forms;
+using CefSharp;
+using TweetDuck.Browser.Bridge;
+using TweetDuck.Browser.Handling;
+using TweetDuck.Browser.Handling.General;
+using TweetDuck.Browser.Notification;
+using TweetDuck.Browser.Notification.Screenshot;
 using TweetDuck.Configuration;
-using TweetDuck.Core.Bridge;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Handling;
-using TweetDuck.Core.Handling.General;
-using TweetDuck.Core.Management;
-using TweetDuck.Core.Notification;
-using TweetDuck.Core.Notification.Screenshot;
-using TweetDuck.Core.Other;
-using TweetDuck.Core.Other.Analytics;
-using TweetDuck.Core.Other.Settings.Dialogs;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
+using TweetDuck.Dialogs;
+using TweetDuck.Dialogs.Settings;
+using TweetDuck.Management;
+using TweetDuck.Management.Analytics;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Events;
-using TweetDuck.Resources;
 using TweetDuck.Updates;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Events;
+using TweetLib.Core.Systems.Updates;
 
-namespace TweetDuck.Core{
+namespace TweetDuck.Browser{
     sealed partial class FormBrowser : Form, AnalyticsFile.IProvider{
         private static UserConfig Config => Program.Config.User;
 
@@ -39,15 +44,18 @@ namespace TweetDuck.Core{
             }
         }
 
-        public string UpdateInstallerPath { get; private set; }
+        public UpdateInstaller UpdateInstaller { get; private set; }
         private bool ignoreUpdateCheckError;
         
         public AnalyticsFile AnalyticsFile => analytics?.File ?? AnalyticsFile.Dummy;
 
+        #pragma warning disable IDE0069 // Disposable fields should be disposed
         private readonly TweetDeckBrowser browser;
+        private readonly FormNotificationTweet notification;
+        #pragma warning restore IDE0069 // Disposable fields should be disposed
+
         private readonly PluginManager plugins;
         private readonly UpdateHandler updates;
-        private readonly FormNotificationTweet notification;
         private readonly ContextMenu contextMenu;
         private readonly UpdateBridge updateBridge;
 
@@ -58,25 +66,25 @@ namespace TweetDuck.Core{
         private VideoPlayer videoPlayer;
         private AnalyticsManager analytics;
 
-        public FormBrowser(){
+        public FormBrowser(PluginSchemeFactory pluginScheme){
             InitializeComponent();
 
             Text = Program.BrandName;
             
-            this.plugins = new PluginManager(Program.Config.Plugins, Program.PluginPath);
+            this.plugins = new PluginManager(Program.Config.Plugins, Program.PluginPath, Program.PluginDataPath);
             this.plugins.Reloaded += plugins_Reloaded;
             this.plugins.Executed += plugins_Executed;
             this.plugins.Reload();
+            pluginScheme.Setup(plugins);
 
             this.notification = new FormNotificationTweet(this, plugins);
             this.notification.Show();
             
-            this.updates = new UpdateHandler(Program.InstallerPath);
+            this.updates = new UpdateHandler(new UpdateCheckClient(Program.InstallerPath), TaskScheduler.FromCurrentSynchronizationContext());
             this.updates.CheckFinished += updates_CheckFinished;
 
             this.updateBridge = new UpdateBridge(updates, this);
             this.updateBridge.UpdateAccepted += updateBridge_UpdateAccepted;
-            this.updateBridge.UpdateDelayed += updateBridge_UpdateDelayed;
             this.updateBridge.UpdateDismissed += updateBridge_UpdateDismissed;
 
             this.browser = new TweetDeckBrowser(this, plugins, new TweetDeckBridge.Browser(this, notification), updateBridge);
@@ -87,14 +95,7 @@ namespace TweetDuck.Core{
             Disposed += (sender, args) => {
                 Config.MuteToggled -= Config_MuteToggled;
                 Config.TrayBehaviorChanged -= Config_TrayBehaviorChanged;
-                
                 browser.Dispose();
-                updates.Dispose();
-                contextMenu.Dispose();
-
-                notificationScreenshotManager?.Dispose();
-                videoPlayer?.Dispose();
-                analytics?.Dispose();
             };
 
             Config.MuteToggled += Config_MuteToggled;
@@ -116,6 +117,21 @@ namespace TweetDuck.Core{
             RestoreWindow();
         }
 
+        protected override void Dispose(bool disposing){
+            if (disposing){
+                components?.Dispose();
+
+                updates.Dispose();
+                contextMenu.Dispose();
+
+                notificationScreenshotManager?.Dispose();
+                videoPlayer?.Dispose();
+                analytics?.Dispose();
+            }
+
+            base.Dispose(disposing);
+        }
+
         private void ShowChildForm(Form form){
             form.VisibleChanged += (sender, args) => form.MoveToCenter(this);
             form.Show(this);
@@ -130,6 +146,8 @@ namespace TweetDuck.Core{
 
         private void RestoreWindow(){
             Config.BrowserWindow.Restore(this, true);
+            browser.PrepareSize(ClientSize);
+
             prevState = WindowState;
             isLoaded = true;
         }
@@ -149,7 +167,9 @@ namespace TweetDuck.Core{
         }
 
         private void FormBrowser_Activated(object sender, EventArgs e){
-            if (!isLoaded)return;
+            if (!isLoaded){
+                return;
+            }
 
             trayIcon.HasNotifications = false;
 
@@ -159,14 +179,18 @@ namespace TweetDuck.Core{
         }
 
         private void FormBrowser_LocationChanged(object sender, EventArgs e){
-            if (!isLoaded)return;
+            if (!isLoaded){
+                return;
+            }
             
             timerResize.Stop();
             timerResize.Start();
         }
 
         private void FormBrowser_Resize(object sender, EventArgs e){
-            if (!isLoaded)return;
+            if (!isLoaded){
+                return;
+            }
 
             if (WindowState != prevState){
                 prevState = WindowState;
@@ -187,9 +211,12 @@ namespace TweetDuck.Core{
         }
 
         private void FormBrowser_ResizeEnd(object sender, EventArgs e){ // also triggers when the window moves
-            if (!isLoaded)return;
+            if (!isLoaded){
+                return;
+            }
 
             timerResize.Stop();
+            browser.PrepareSize(ClientSize); // needed to pre-size browser control when launched in maximized state
             
             if (Location != ControlExtensions.InvisibleLocation){
                 Config.BrowserWindow.Save(this);
@@ -198,7 +225,9 @@ namespace TweetDuck.Core{
         }
 
         private void FormBrowser_FormClosing(object sender, FormClosingEventArgs e){
-            if (!isLoaded)return;
+            if (!isLoaded){
+                return;
+            }
 
             if (Config.TrayBehavior.ShouldHideOnClose() && trayIcon.Visible && e.CloseReason == CloseReason.UserClosing){
                 Hide(); // hides taskbar too?! welp that works I guess
@@ -207,7 +236,7 @@ namespace TweetDuck.Core{
         }
 
         private void FormBrowser_FormClosed(object sender, FormClosedEventArgs e){
-            if (isLoaded && UpdateInstallerPath == null){
+            if (isLoaded && UpdateInstaller == null){
                 updateBridge.Cleanup();
             }
         }
@@ -234,7 +263,7 @@ namespace TweetDuck.Core{
         
         private void plugins_Reloaded(object sender, PluginErrorEventArgs e){
             if (e.HasErrors){
-                FormMessage.Error("Error Loading Plugins", "The following plugins will not be available until the issues are resolved:\n\n"+string.Join("\n\n", e.Errors), FormMessage.OK);
+                FormMessage.Error("Error Loading Plugins", "The following plugins will not be available until the issues are resolved:\n\n" + string.Join("\n\n", e.Errors), FormMessage.OK);
             }
 
             if (isLoaded){
@@ -242,9 +271,11 @@ namespace TweetDuck.Core{
             }
         }
         
-        private static void plugins_Executed(object sender, PluginErrorEventArgs e){
+        private void plugins_Executed(object sender, PluginErrorEventArgs e){
             if (e.HasErrors){
-                FormMessage.Error("Error Executing Plugins", "Failed to execute the following plugins:\n\n"+string.Join("\n\n", e.Errors), FormMessage.OK);
+                this.InvokeAsyncSafe(() => {
+                    FormMessage.Error("Error Executing Plugins", "Failed to execute the following plugins:\n\n" + string.Join("\n\n", e.Errors), FormMessage.OK);
+                });
             }
         }
 
@@ -281,10 +312,10 @@ namespace TweetDuck.Core{
                 UpdateDownloadStatus status = update.DownloadStatus;
 
                 if (status == UpdateDownloadStatus.Done){
-                    UpdateInstallerPath = update.InstallerPath;
+                    UpdateInstaller = new UpdateInstaller(update.InstallerPath);
                     ForceClose();
                 }
-                else if (status != UpdateDownloadStatus.Canceled && FormMessage.Error("Update Has Failed", "Could not automatically download the update: "+(update.DownloadError?.Message ?? "unknown error")+"\n\nWould you like to open the website and try downloading the update manually?", FormMessage.Yes, FormMessage.No)){
+                else if (status != UpdateDownloadStatus.Canceled && FormMessage.Error("Update Has Failed", "Could not automatically download the update: " + (update.DownloadError?.Message ?? "unknown error") + "\n\nWould you like to open the website and try downloading the update manually?", FormMessage.Yes, FormMessage.No)){
                     BrowserUtils.OpenExternalBrowser(Program.Website);
                     ForceClose();
                 }
@@ -317,10 +348,6 @@ namespace TweetDuck.Core{
             }
         }
 
-        private void updateBridge_UpdateDelayed(object sender, UpdateInfo update){
-            // stops the timer
-        }
-
         private void updateBridge_UpdateDismissed(object sender, UpdateInfo update){
             Config.DismissedUpdate = update.VersionTag;
             Config.Save();
@@ -328,7 +355,9 @@ namespace TweetDuck.Core{
 
         protected override void WndProc(ref Message m){
             if (isLoaded && m.Msg == Program.WindowRestoreMessage){
-                if (WindowsUtils.CurrentProcessID == m.WParam.ToInt32()){
+                using Process me = Process.GetCurrentProcess();
+
+                if (me.Id == m.WParam.ToInt32()){
                     trayIcon_ClickRestore(trayIcon, EventArgs.Empty);
                 }
 
@@ -365,14 +394,7 @@ namespace TweetDuck.Core{
         }
 
         public void ReloadToTweetDeck(){
-            #if DEBUG
-            ScriptLoader.HotSwap();
-            #else
-            if (ModifierKeys.HasFlag(Keys.Shift)){
-                ScriptLoader.ClearCache();
-            }
-            #endif
-
+            Program.Resources.OnReloadTriggered();
             ignoreUpdateCheckError = false;
             browser.ReloadToTweetDeck();
             AnalyticsFile.BrowserReloads.Trigger();
@@ -493,14 +515,14 @@ namespace TweetDuck.Core{
         public void OpenProfileImport(){
             FormManager.TryFind<FormSettings>()?.Close();
 
-            using(DialogSettingsManage dialog = new DialogSettingsManage(plugins, true)){
+            using DialogSettingsManage dialog = new DialogSettingsManage(plugins, true);
+
             if (!dialog.IsDisposed && dialog.ShowDialog() == DialogResult.OK && !dialog.IsRestarting){ // needs disposal check because the dialog may be closed in constructor
                 BrowserProcessHandler.UpdatePrefs();
                 FormManager.TryFind<FormPlugins>()?.Close();
                 plugins.Reload(); // also reloads the browser
             }
         }
-        }
 
         public void OnTweetNotification(){ // may be called multiple times, once for each type of notification
             if (Config.EnableTrayHighlight && !ContainsFocus){
@@ -512,24 +534,40 @@ namespace TweetDuck.Core{
             AnalyticsFile.SoundNotifications.Trigger();
         }
 
-        public void PlayVideo(string url, string username){
-            if (string.IsNullOrEmpty(url)){
-                videoPlayer?.Close();
-                return;
-            }
+        public void PlayVideo(string videoUrl, string tweetUrl, string username, IJavascriptCallback callShowOverlay){
+            string playerPath = Config.VideoPlayerPath;
 
+            if (playerPath == null || !File.Exists(playerPath)){
                 if (videoPlayer == null){
                     videoPlayer = new VideoPlayer(this);
-
-                videoPlayer.ProcessExited += (sender, args) => {
-                    browser.HideVideoOverlay(true);
-                };
+                    videoPlayer.ProcessExited += (sender, args) => browser.HideVideoOverlay(true);
+                }
+                
+                callShowOverlay.ExecuteAsync();
+                callShowOverlay.Dispose();
+
+                videoPlayer.Launch(videoUrl, tweetUrl, username);
+            }
+            else{
+                callShowOverlay.Dispose();
+
+                string quotedUrl = '"' + videoUrl + '"';
+                string playerArgs = Config.VideoPlayerPathArgs == null ? quotedUrl : Config.VideoPlayerPathArgs + ' ' + quotedUrl;
+                
+                try{
+                    using(Process.Start(playerPath, playerArgs)){}
+                }catch(Exception e){
+                    Program.Reporter.HandleException("Error Opening Video Player", "Could not open the video player.", true, e);
+                }
             }
             
-            videoPlayer.Launch(url, username);
             AnalyticsFile.VideoPlays.Trigger();
         }
 
+        public void StopVideo(){
+            videoPlayer?.Close();
+        }
+
         public bool ProcessBrowserKey(Keys key){
             if (videoPlayer != null && videoPlayer.Running){
                 videoPlayer.SendKeyEvent(key);

Browser/Handling/ContextMenuBase.cs

@@ -1,23 +1,26 @@
 using System;
+using System.Linq;
 using System.Text.RegularExpressions;
 using System.Windows.Forms;
 using CefSharp;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Utils;
-using System.Linq;
+using TweetDuck.Browser.Adapters;
+using TweetDuck.Browser.Data;
+using TweetDuck.Browser.Notification;
 using TweetDuck.Configuration;
-using TweetDuck.Core.Bridge;
-using TweetDuck.Core.Management;
-using TweetDuck.Core.Notification;
-using TweetDuck.Core.Other;
-using TweetDuck.Core.Other.Analytics;
-using TweetDuck.Resources;
+using TweetDuck.Controls;
+using TweetDuck.Dialogs;
+using TweetDuck.Management;
+using TweetDuck.Management.Analytics;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Twitter;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Core.Handling{
+namespace TweetDuck.Browser.Handling{
     abstract class ContextMenuBase : IContextMenuHandler{
-        protected static UserConfig Config => Program.Config.User;
+        public static ContextInfo CurrentInfo { get; } = new ContextInfo();
 
-        private static TwitterUtils.ImageQuality ImageQuality => Config.TwitterImageQuality;
+        protected static UserConfig Config => Program.Config.User;
+        private static ImageQuality ImageQuality => Config.TwitterImageQuality;
         
         private const CefMenuCommand MenuOpenLinkUrl     = (CefMenuCommand)26500;
         private const CefMenuCommand MenuCopyLinkUrl     = (CefMenuCommand)26501;
@@ -25,10 +28,11 @@ namespace TweetDuck.Core.Handling{
         private const CefMenuCommand MenuViewImage       = (CefMenuCommand)26503;
         private const CefMenuCommand MenuOpenMediaUrl    = (CefMenuCommand)26504;
         private const CefMenuCommand MenuCopyMediaUrl    = (CefMenuCommand)26505;
-        private const CefMenuCommand MenuSaveMedia       = (CefMenuCommand)26506;
-        private const CefMenuCommand MenuSaveTweetImages = (CefMenuCommand)26507;
-        private const CefMenuCommand MenuSearchInBrowser = (CefMenuCommand)26508;
-        private const CefMenuCommand MenuReadApplyROT13  = (CefMenuCommand)26509;
+        private const CefMenuCommand MenuCopyImage       = (CefMenuCommand)26506;
+        private const CefMenuCommand MenuSaveMedia       = (CefMenuCommand)26507;
+        private const CefMenuCommand MenuSaveTweetImages = (CefMenuCommand)26508;
+        private const CefMenuCommand MenuSearchInBrowser = (CefMenuCommand)26509;
+        private const CefMenuCommand MenuReadApplyROT13  = (CefMenuCommand)26510;
         private const CefMenuCommand MenuOpenDevTools    = (CefMenuCommand)26599;
         
         protected ContextInfo.ContextData Context { get; private set; }
@@ -40,11 +44,11 @@ namespace TweetDuck.Core.Handling{
         }
 
         public virtual void OnBeforeContextMenu(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model){
-            if (!TwitterUtils.IsTweetDeckWebsite(frame) || browser.IsLoading){
-                Context = TweetDeckBridge.ContextInfo.Reset();
+            if (!TwitterUrls.IsTweetDeck(frame.Url) || browser.IsLoading){
+                Context = CurrentInfo.Reset();
             }
             else{
-                Context = TweetDeckBridge.ContextInfo.Create(parameters);
+                Context = CurrentInfo.Create(parameters);
             }
             
             if (parameters.TypeFlags.HasFlag(ContextMenuType.Selection) && !parameters.TypeFlags.HasFlag(ContextMenuType.Editable)){
@@ -54,12 +58,12 @@ namespace TweetDuck.Core.Handling{
                 model.AddSeparator();
             }
 
-            string TextOpen(string name) => "Open "+name+" in browser";
-            string TextCopy(string name) => "Copy "+name+" address";
-            string TextSave(string name) => "Save "+name+" as...";
+            static string TextOpen(string name) => "Open " + name + " in browser";
+            static string TextCopy(string name) => "Copy " + name + " address";
+            static string TextSave(string name) => "Save " + name + " as...";
             
             if (Context.Types.HasFlag(ContextInfo.ContextType.Link) && !Context.UnsafeLinkUrl.EndsWith("tweetdeck.twitter.com/#", StringComparison.Ordinal)){
-                if (TwitterUtils.RegexAccount.IsMatch(Context.UnsafeLinkUrl)){
+                if (TwitterUrls.RegexAccount.IsMatch(Context.UnsafeLinkUrl)){
                     model.AddItem(MenuOpenLinkUrl, TextOpen("account"));
                     model.AddItem(MenuCopyLinkUrl, TextCopy("account"));
                     model.AddItem(MenuCopyUsername, "Copy account username");
@@ -78,10 +82,11 @@ namespace TweetDuck.Core.Handling{
                 model.AddItem(MenuSaveMedia, TextSave("video"));
                 model.AddSeparator();
             }
-            else if (Context.Types.HasFlag(ContextInfo.ContextType.Image) && Context.MediaUrl != TweetNotification.AppLogo.Url){
+            else if (Context.Types.HasFlag(ContextInfo.ContextType.Image) && Context.MediaUrl != FormNotificationBase.AppLogo.Url){
                 model.AddItem(MenuViewImage, "View image in photo viewer");
                 model.AddItem(MenuOpenMediaUrl, TextOpen("image"));
                 model.AddItem(MenuCopyMediaUrl, TextCopy("image"));
+                model.AddItem(MenuCopyImage, "Copy image");
                 model.AddItem(MenuSaveMedia, TextSave("image"));
 
                 if (Context.Chirp.Images.Length > 1){
@@ -106,7 +111,7 @@ namespace TweetDuck.Core.Handling{
 
                 case MenuCopyUsername: {
                     string url = Context.UnsafeLinkUrl;
-                    Match match = TwitterUtils.RegexAccount.Match(url);
+                    Match match = TwitterUrls.RegexAccount.Match(url);
 
                     SetClipboardText(control, match.Success ? match.Groups[1].Value : url);
                     control.InvokeAsyncSafe(analytics.AnalyticsFile.CopiedUsernames.Trigger);
@@ -114,13 +119,23 @@ namespace TweetDuck.Core.Handling{
                 }
 
                 case MenuOpenMediaUrl:
-                    OpenBrowser(control, TwitterUtils.GetMediaLink(Context.MediaUrl, ImageQuality));
+                    OpenBrowser(control, TwitterUrls.GetMediaLink(Context.MediaUrl, ImageQuality));
                     break;
 
                 case MenuCopyMediaUrl:
-                    SetClipboardText(control, TwitterUtils.GetMediaLink(Context.MediaUrl, ImageQuality));
+                    SetClipboardText(control, TwitterUrls.GetMediaLink(Context.MediaUrl, ImageQuality));
                     break;
 
+                case MenuCopyImage: {
+                    string url = Context.MediaUrl;
+
+                    control.InvokeAsyncSafe(() => {
+                        TwitterUtils.CopyImage(url, ImageQuality);
+                    });
+                    
+                    break;
+                }
+
                 case MenuViewImage: {
                     string url = Context.MediaUrl;
 
@@ -176,7 +191,7 @@ namespace TweetDuck.Core.Handling{
                     break;
                     
                 case MenuOpenDevTools:
-                    browserControl.ShowDevTools();
+                    browserControl.OpenDevToolsCustom();
                     break;
             }
 
@@ -184,7 +199,7 @@ namespace TweetDuck.Core.Handling{
         }
 
         public virtual void OnContextMenuDismissed(IWebBrowser browserControl, IBrowser browser, IFrame frame){
-            Context = TweetDeckBridge.ContextInfo.Reset();
+            Context = CurrentInfo.Reset();
         }
 
         public virtual bool RunContextMenu(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model, IRunContextMenuCallback callback){
@@ -192,7 +207,7 @@ namespace TweetDuck.Core.Handling{
         }
 
         protected static void DeselectAll(IFrame frame){
-            ScriptLoader.ExecuteScript(frame, "window.getSelection().removeAllRanges()", "gen:deselect");
+            CefScriptExecutor.RunScript(frame, "window.getSelection().removeAllRanges()", "gen:deselect");
         }
 
         protected static void OpenBrowser(Control control, string url){
@@ -200,11 +215,11 @@ namespace TweetDuck.Core.Handling{
         }
 
         protected static void SetClipboardText(Control control, string text){
-            control.InvokeAsyncSafe(() => WindowsUtils.SetClipboard(text, TextDataFormat.UnicodeText));
+            control.InvokeAsyncSafe(() => ClipboardManager.SetText(text, TextDataFormat.UnicodeText));
         }
 
         protected static void InsertSelectionSearchItem(IMenuModel model, CefMenuCommand insertCommand, string insertLabel){
-            model.InsertItemAt(model.GetIndexOf(MenuSearchInBrowser)+1, insertCommand, insertLabel);
+            model.InsertItemAt(model.GetIndexOf(MenuSearchInBrowser) + 1, insertCommand, insertLabel);
         }
         
         protected static void AddDebugMenuItems(IMenuModel model){
@@ -215,13 +230,13 @@ namespace TweetDuck.Core.Handling{
         }
 
         protected static void RemoveSeparatorIfLast(IMenuModel model){
-            if (model.Count > 0 && model.GetTypeAt(model.Count-1) == MenuItemType.Separator){
-                model.RemoveAt(model.Count-1);
+            if (model.Count > 0 && model.GetTypeAt(model.Count - 1) == MenuItemType.Separator){
+                model.RemoveAt(model.Count - 1);
             }
         }
 
         protected static void AddSeparator(IMenuModel model){
-            if (model.Count > 0 && model.GetTypeAt(model.Count-1) != MenuItemType.Separator){ // do not add separators if there is nothing to separate
+            if (model.Count > 0 && model.GetTypeAt(model.Count - 1) != MenuItemType.Separator){ // do not add separators if there is nothing to separate
                 model.AddSeparator();
             }
         }

Browser/Handling/ContextMenuBrowser.cs

@@ -1,10 +1,10 @@
-using CefSharp;
-using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Management;
-using TweetDuck.Core.Utils;
+using System.Windows.Forms;
+using CefSharp;
+using TweetDuck.Browser.Data;
+using TweetDuck.Controls;
+using TweetLib.Core.Features.Twitter;
 
-namespace TweetDuck.Core.Handling{
+namespace TweetDuck.Browser.Handling{
     sealed class ContextMenuBrowser : ContextMenuBase{
         private const CefMenuCommand MenuGlobal   = (CefMenuCommand)26600;
         private const CefMenuCommand MenuMute     = (CefMenuCommand)26601;
@@ -24,7 +24,7 @@ namespace TweetDuck.Core.Handling{
         private const string TitleMuteNotifications = "Mute notifications";
         private const string TitleSettings = "Options";
         private const string TitlePlugins = "Plugins";
-        private const string TitleAboutProgram = "About "+Program.BrandName;
+        private const string TitleAboutProgram = "About " + Program.BrandName;
 
         private readonly FormBrowser form;
         
@@ -53,7 +53,7 @@ namespace TweetDuck.Core.Handling{
 
             base.OnBeforeContextMenu(browserControl, browser, frame, parameters, model);
 
-            if (isSelecting && !isEditing && TwitterUtils.IsTweetDeckWebsite(frame)){
+            if (isSelecting && !isEditing && TwitterUrls.IsTweetDeck(frame.Url)){
                 InsertSelectionSearchItem(model, MenuSearchInColumn, "Search in a column");
             }
 

Browser/Handling/ContextMenuGuide.cs

@@ -1,7 +1,7 @@
 using CefSharp;
-using TweetDuck.Core.Other.Analytics;
+using TweetDuck.Management.Analytics;
 
-namespace TweetDuck.Core.Handling{
+namespace TweetDuck.Browser.Handling{
     sealed class ContextMenuGuide : ContextMenuBase{
         public ContextMenuGuide(AnalyticsFile.IProvider analytics) : base(analytics){}
 

Browser/Handling/ContextMenuNotification.cs

@@ -1,8 +1,8 @@
 using CefSharp;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Notification;
+using TweetDuck.Browser.Notification;
+using TweetDuck.Controls;
 
-namespace TweetDuck.Core.Handling{
+namespace TweetDuck.Browser.Handling{
     sealed class ContextMenuNotification : ContextMenuBase{
         private const CefMenuCommand MenuViewDetail         = (CefMenuCommand)26600;
         private const CefMenuCommand MenuSkipTweet          = (CefMenuCommand)26601;

Browser/Handling/DragHandlerBrowser.cs

@@ -2,7 +2,7 @@
 using CefSharp;
 using CefSharp.Enums;
 
-namespace TweetDuck.Core.Handling{
+namespace TweetDuck.Browser.Handling{
     sealed class DragHandlerBrowser : IDragHandler{
         private readonly RequestHandlerBrowser requestHandler;
 
@@ -30,6 +30,6 @@ namespace TweetDuck.Core.Handling{
             return false;
         }
 
-        public void OnDraggableRegionsChanged(IWebBrowser browserControl, IBrowser browser, IList<DraggableRegion> regions){}
+        public void OnDraggableRegionsChanged(IWebBrowser browserControl, IBrowser browser, IFrame frame, IList<DraggableRegion> regions){}
     }
 }

Browser/Handling/Filters/ResponseFilterBase.cs

@@ -3,7 +3,7 @@ using System.IO;
 using System.Text;
 using CefSharp;
 
-namespace TweetDuck.Core.Handling.Filters{
+namespace TweetDuck.Browser.Handling.Filters{
     abstract class ResponseFilterBase : IResponseFilter{
         private enum State{
             Reading, Writing, Done
@@ -25,7 +25,7 @@ namespace TweetDuck.Core.Handling.Filters{
             int responseLength = responseData.Length;
 
             if (state == State.Reading){
-                int bytesToRead = Math.Min(responseLength-offset, (int)Math.Min(dataIn?.Length ?? 0, int.MaxValue));
+                int bytesToRead = Math.Min(responseLength - offset, (int)Math.Min(dataIn?.Length ?? 0, int.MaxValue));
                 
                 dataIn?.Read(responseData, offset, bytesToRead);
                 offset += bytesToRead;
@@ -42,7 +42,7 @@ namespace TweetDuck.Core.Handling.Filters{
                 return FilterStatus.NeedMoreData;
             }
             else if (state == State.Writing){
-                int bytesToWrite = Math.Min(responseLength-offset, (int)Math.Min(dataOut.Length, int.MaxValue));
+                int bytesToWrite = Math.Min(responseLength - offset, (int)Math.Min(dataOut.Length, int.MaxValue));
 
                 if (bytesToWrite > 0){
                     dataOut.Write(responseData, offset, bytesToWrite);

Browser/Handling/Filters/ResponseFilterVendor.cs

@@ -1,7 +1,7 @@
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace TweetDuck.Core.Handling.Filters{
+namespace TweetDuck.Browser.Handling.Filters{
     sealed class ResponseFilterVendor : ResponseFilterBase{
         private static readonly Regex RegexRestoreJQuery = new Regex(@"(\w+)\.fn=\1\.prototype", RegexOptions.Compiled);
 

Browser/Handling/General/BrowserProcessHandler.cs

@@ -3,7 +3,7 @@ using System.Threading.Tasks;
 using CefSharp;
 using TweetDuck.Configuration;
 
-namespace TweetDuck.Core.Handling.General{
+namespace TweetDuck.Browser.Handling.General{
     sealed class BrowserProcessHandler : IBrowserProcessHandler{
         public static Task UpdatePrefs(){
             return Cef.UIThreadTaskFactory.StartNew(UpdatePrefsInternal);
@@ -11,13 +11,12 @@ namespace TweetDuck.Core.Handling.General{
 
         private static void UpdatePrefsInternal(){
             UserConfig config = Program.Config.User;
+            using IRequestContext ctx = Cef.GetGlobalRequestContext();
 
-            using(IRequestContext ctx = Cef.GetGlobalRequestContext()){
             ctx.SetPreference("browser.enable_spellchecking", config.EnableSpellCheck, out string _);
             ctx.SetPreference("spellcheck.dictionary", config.SpellCheckLanguage, out string _);
             ctx.SetPreference("settings.a11y.animation_policy", config.EnableAnimatedImages ? "allowed" : "none", out string _);
         }
-        }
 
         void IBrowserProcessHandler.OnContextInitialized(){
             UpdatePrefsInternal();

Browser/Handling/General/FileDialogHandler.cs

@@ -1,15 +1,14 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Windows.Forms;
 using CefSharp;
 
-namespace TweetDuck.Core.Handling.General{
+namespace TweetDuck.Browser.Handling.General{
     sealed class FileDialogHandler : IDialogHandler{
         public bool OnFileDialog(IWebBrowser browserControl, IBrowser browser, CefFileDialogMode mode, CefFileDialogFlags flags, string title, string defaultFilePath, List<string> acceptFilters, int selectedAcceptFilter, IFileDialogCallback callback){
             if (mode == CefFileDialogMode.Open || mode == CefFileDialogMode.OpenMultiple){
-                string allFilters = string.Join(";", acceptFilters.Select(filter => "*"+filter));
+                string allFilters = string.Join(";", acceptFilters.SelectMany(ParseFileType).Where(filter => !string.IsNullOrEmpty(filter)).Select(filter => "*" + filter));
 
                 using(OpenFileDialog dialog = new OpenFileDialog{
                     AutoUpgradeEnabled = true,
@@ -19,8 +18,8 @@ namespace TweetDuck.Core.Handling.General{
                     Filter = $"All Supported Formats ({allFilters})|{allFilters}|All Files (*.*)|*.*"
                 }){
                     if (dialog.ShowDialog() == DialogResult.OK){
-                        string ext = Path.GetExtension(dialog.FileName);
-                        callback.Continue(acceptFilters.FindIndex(filter => filter.Equals(ext, StringComparison.OrdinalIgnoreCase)), dialog.FileNames.ToList());
+                        string ext = Path.GetExtension(dialog.FileName)?.ToLower();
+                        callback.Continue(acceptFilters.FindIndex(filter => ParseFileType(filter).Contains(ext)), dialog.FileNames.ToList());
                     }
                     else{
                         callback.Cancel();
@@ -36,5 +35,27 @@ namespace TweetDuck.Core.Handling.General{
                 return false;
             }
         }
+
+        private static IEnumerable<string> ParseFileType(string type){
+            if (string.IsNullOrEmpty(type)){
+                return new string[0];
+            }
+            
+            if (type[0] == '.'){
+                return new string[]{ type };
+            }
+
+            switch(type){
+                case "image/jpeg": return new string[]{ ".jpg", ".jpeg" };
+                case "image/png": return new string[]{ ".png" };
+                case "image/gif": return new string[]{ ".gif" };
+                case "image/webp": return new string[]{ ".webp" };
+                case "video/mp4": return new string[]{ ".mp4" };
+                case "video/quicktime": return new string[]{ ".mov", ".qt" };
+            }
+
+            System.Diagnostics.Debugger.Break();
+            return new string[0];
+        }
     }
 }

Browser/Handling/General/JavaScriptDialogHandler.cs

@@ -1,26 +1,28 @@
 using System.Drawing;
 using System.Windows.Forms;
 using CefSharp;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Other;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
+using TweetDuck.Dialogs;
+using TweetDuck.Utils;
 
-namespace TweetDuck.Core.Handling.General{
+namespace TweetDuck.Browser.Handling.General{
     sealed class JavaScriptDialogHandler : IJsDialogHandler{
         private static FormMessage CreateMessageForm(string caption, string text){
             MessageBoxIcon icon = MessageBoxIcon.None;
             int pipe = text.IndexOf('|');
 
             if (pipe != -1){
-                switch(text.Substring(0, pipe)){
-                    case "error": icon = MessageBoxIcon.Error; break;
-                    case "warning": icon = MessageBoxIcon.Warning; break;
-                    case "info": icon = MessageBoxIcon.Information; break;
-                    case "question": icon = MessageBoxIcon.Question; break;
-                    default: return new FormMessage(caption, text, icon);
-                }
+                icon = text.Substring(0, pipe) switch{
+                    "error"    => MessageBoxIcon.Error,
+                    "warning"  => MessageBoxIcon.Warning,
+                    "info"     => MessageBoxIcon.Information,
+                    "question" => MessageBoxIcon.Question,
+                    _          => MessageBoxIcon.None
+                };
 
-                text = text.Substring(pipe+1);
+                if (icon != MessageBoxIcon.None){
+                    text = text.Substring(pipe + 1);
+                }
             }
 
             return new FormMessage(caption, text, icon);
@@ -51,13 +53,13 @@ namespace TweetDuck.Core.Handling.General{
                     input = new TextBox{
                         Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Bottom,
                         Font = SystemFonts.MessageBoxFont,
-                        Location = new Point(BrowserUtils.Scale(22+inputPad, dpiScale), form.ActionPanelY-BrowserUtils.Scale(46, dpiScale)),
-                        Size = new Size(form.ClientSize.Width-BrowserUtils.Scale(44+inputPad, dpiScale), BrowserUtils.Scale(23, dpiScale))
+                        Location = new Point(BrowserUtils.Scale(22 + inputPad, dpiScale), form.ActionPanelY - BrowserUtils.Scale(46, dpiScale)),
+                        Size = new Size(form.ClientSize.Width - BrowserUtils.Scale(44 + inputPad, dpiScale), BrowserUtils.Scale(23, dpiScale))
                     };
 
                     form.Controls.Add(input);
                     form.ActiveControl = input;
-                    form.Height += input.Size.Height+input.Margin.Vertical;
+                    form.Height += input.Size.Height + input.Margin.Vertical;
                 }
                 else{
                     callback.Continue(false);
@@ -80,7 +82,8 @@ namespace TweetDuck.Core.Handling.General{
             return true;
         }
 
-        bool IJsDialogHandler.OnJSBeforeUnload(IWebBrowser browserControl, IBrowser browser, string message, bool isReload, IJsDialogCallback callback){
+        bool IJsDialogHandler.OnBeforeUnloadDialog(IWebBrowser browserControl, IBrowser browser, string messageText, bool isReload, IJsDialogCallback callback){
+            callback.Dispose();
             return false;
         }
 

Browser/Handling/General/LifeSpanHandler.cs

@@ -1,14 +1,18 @@
 using CefSharp;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
+using TweetDuck.Utils;
 
-namespace TweetDuck.Core.Handling.General{
+namespace TweetDuck.Browser.Handling.General{
     sealed class LifeSpanHandler : ILifeSpanHandler{
+        private static bool IsPopupAllowed(string url){
+            return url.StartsWith("https://twitter.com/teams/authorize?");
+        }
+
         public static bool HandleLinkClick(IWebBrowser browserControl, WindowOpenDisposition targetDisposition, string targetUrl){
             switch(targetDisposition){
                 case WindowOpenDisposition.NewBackgroundTab:
                 case WindowOpenDisposition.NewForegroundTab:
-                case WindowOpenDisposition.NewPopup:
+                case WindowOpenDisposition.NewPopup when !IsPopupAllowed(targetUrl):
                 case WindowOpenDisposition.NewWindow:
                     browserControl.AsControl().InvokeAsyncSafe(() => BrowserUtils.OpenExternalBrowser(targetUrl));
                     return true;

Browser/Handling/KeyboardHandlerBase.cs

@@ -1,15 +1,15 @@
 using System.Windows.Forms;
 using CefSharp;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Other;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
+using TweetDuck.Dialogs;
+using TweetDuck.Utils;
 
-namespace TweetDuck.Core.Handling{
+namespace TweetDuck.Browser.Handling{
     class KeyboardHandlerBase : IKeyboardHandler{
         protected virtual bool HandleRawKey(IWebBrowser browserControl, IBrowser browser, Keys key, CefEventFlags modifiers){
             if (modifiers == (CefEventFlags.ControlDown | CefEventFlags.ShiftDown) && key == Keys.I){
                 if (BrowserUtils.HasDevTools){
-                    browser.ShowDevTools();
+                    browserControl.OpenDevToolsCustom();
                 }
                 else{
                     browserControl.AsControl().InvokeSafe(() => {
@@ -22,7 +22,7 @@ namespace TweetDuck.Core.Handling{
                             extraMessage = "Please download the installer, and tick 'Install dev tools' during the installation process. The installer will automatically find and update your current installation of TweetDuck.";
                         }
 
-                        FormMessage.Information("Dev Tools", "You do not have dev tools installed. "+extraMessage, FormMessage.OK);
+                        FormMessage.Information("Dev Tools", "You do not have dev tools installed. " + extraMessage, FormMessage.OK);
                     });
                 }
 
@@ -33,7 +33,7 @@ namespace TweetDuck.Core.Handling{
         }
 
         bool IKeyboardHandler.OnPreKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int windowsKeyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey, ref bool isKeyboardShortcut){
-            if (type == KeyType.RawKeyDown && !browser.FocusedFrame.Url.StartsWith("chrome-devtools://")){
+            if (type == KeyType.RawKeyDown && !browser.FocusedFrame.Url.StartsWith("devtools://")){
                 return HandleRawKey(browserControl, browser, (Keys)windowsKeyCode, modifiers);
             }
 

Browser/Handling/KeyboardHandlerBrowser.cs

@@ -1,7 +1,7 @@
 using System.Windows.Forms;
 using CefSharp;
 
-namespace TweetDuck.Core.Handling{
+namespace TweetDuck.Browser.Handling{
     sealed class KeyboardHandlerBrowser : KeyboardHandlerBase{
         private readonly FormBrowser form;
 

Browser/Handling/KeyboardHandlerNotification.cs

@@ -1,9 +1,9 @@
-using CefSharp;
-using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Notification;
+using System.Windows.Forms;
+using CefSharp;
+using TweetDuck.Browser.Notification;
+using TweetDuck.Controls;
 
-namespace TweetDuck.Core.Handling {
+namespace TweetDuck.Browser.Handling{
     sealed class KeyboardHandlerNotification : KeyboardHandlerBase{
         private readonly FormNotificationBase notification;
 

Browser/Handling/RequestHandlerBase.cs

@@ -0,0 +1,23 @@
+using CefSharp;
+using CefSharp.Handler;
+using TweetDuck.Browser.Handling.General;
+
+namespace TweetDuck.Browser.Handling{
+    class RequestHandlerBase : RequestHandler{
+        private readonly bool autoReload;
+
+        public RequestHandlerBase(bool autoReload){
+            this.autoReload = autoReload;
+        }
+
+        protected override bool OnOpenUrlFromTab(IWebBrowser browserControl, IBrowser browser, IFrame frame, string targetUrl, WindowOpenDisposition targetDisposition, bool userGesture){
+            return LifeSpanHandler.HandleLinkClick(browserControl, targetDisposition, targetUrl);
+        }
+        
+        protected override void OnRenderProcessTerminated(IWebBrowser browserControl, IBrowser browser, CefTerminationStatus status){
+            if (autoReload){
+                browser.Reload();
+            }
+        }
+    }
+}

Browser/Handling/RequestHandlerBrowser.cs

@@ -0,0 +1,23 @@
+using CefSharp;
+using TweetLib.Core.Features.Twitter;
+
+namespace TweetDuck.Browser.Handling{
+    sealed class RequestHandlerBrowser : RequestHandlerBase{
+        public string BlockNextUserNavUrl { get; set; }
+
+        public RequestHandlerBrowser() : base(true){}
+
+        protected override bool OnBeforeBrowse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, bool userGesture, bool isRedirect){
+            if (userGesture && request.TransitionType == TransitionType.LinkClicked){
+                bool block = request.Url == BlockNextUserNavUrl;
+                BlockNextUserNavUrl = string.Empty;
+                return block;
+            }
+            else if (request.TransitionType.HasFlag(TransitionType.ForwardBack) && TwitterUrls.IsTweetDeck(frame.Url)){
+                return true;
+            }
+
+            return base.OnBeforeBrowse(browserControl, browser, frame, request, userGesture, isRedirect);
+        }
+    }
+}

Browser/Handling/ResourceHandlerNotification.cs

@@ -1,9 +1,11 @@
-using CefSharp;
+using System;
 using System.Collections.Specialized;
 using System.IO;
 using System.Text;
+using CefSharp;
+using CefSharp.Callback;
 
-namespace TweetDuck.Core.Handling{
+namespace TweetDuck.Browser.Handling{
     sealed class ResourceHandlerNotification : IResourceHandler{
         private readonly NameValueCollection headers = new NameValueCollection(0);
         private MemoryStream dataIn;
@@ -20,8 +22,14 @@ namespace TweetDuck.Core.Handling{
             }
         }
 
-        bool IResourceHandler.ProcessRequest(IRequest request, ICallback callback){
-            callback.Continue();
+        bool IResourceHandler.Open(IRequest request, out bool handleRequest, ICallback callback){
+            callback.Dispose();
+            handleRequest = true;
+
+            if (dataIn != null){
+                dataIn.Position = 0;
+            }
+
             return true;
         }
 
@@ -31,31 +39,39 @@ namespace TweetDuck.Core.Handling{
             response.MimeType = "text/html";
             response.StatusCode = 200;
             response.StatusText = "OK";
-            response.ResponseHeaders = headers;
-            responseLength = dataIn?.Length ?? -1;
+            response.Headers = headers;
+            responseLength = dataIn?.Length ?? 0;
+        }
+
+        bool IResourceHandler.Read(Stream dataOut, out int bytesRead, IResourceReadCallback callback){
+            callback?.Dispose(); // TODO unnecessary null check once ReadResponse is removed
+
+            try{
+                byte[] buffer = new byte[Math.Min(dataIn.Length - dataIn.Position, dataOut.Length)];
+                int length = buffer.Length;
+
+                dataIn.Read(buffer, 0, length);
+                dataOut.Write(buffer, 0, length);
+                bytesRead = length;
+            }catch{ // catch IOException, possibly NullReferenceException if dataIn is null
+                bytesRead = 0;
+            }
+
+            return bytesRead > 0;
+        }
+
+        bool IResourceHandler.Skip(long bytesToSkip, out long bytesSkipped, IResourceSkipCallback callback){
+            bytesSkipped = -2; // ERR_FAILED
+            callback.Dispose();
+            return false;
+        }
+
+        bool IResourceHandler.ProcessRequest(IRequest request, ICallback callback){
+            return ((IResourceHandler)this).Open(request, out bool _, callback);
         }
 
         bool IResourceHandler.ReadResponse(Stream dataOut, out int bytesRead, ICallback callback){
-            callback.Dispose();
-
-            try{
-                int length = (int)dataIn.Length;
-
-                dataIn.CopyTo(dataOut, length);
-                bytesRead = length;
-                return true;
-            }catch{ // catch IOException, possibly NullReferenceException if dataIn is null
-                bytesRead = 0;
-                return false;
-            }
-        }
-
-        bool IResourceHandler.CanGetCookie(Cookie cookie){
-            return true;
-        }
-
-        bool IResourceHandler.CanSetCookie(Cookie cookie){
-            return true;
+            return ((IResourceHandler)this).Read(dataOut, out bytesRead, null);
         }
 
         void IResourceHandler.Cancel(){}

Browser/Handling/ResourceRequestHandler.cs

@@ -0,0 +1,35 @@
+using System.Diagnostics.CodeAnalysis;
+using CefSharp;
+using TweetDuck.Browser.Data;
+
+namespace TweetDuck.Browser.Handling{
+    abstract class ResourceRequestHandler : CefSharp.Handler.ResourceRequestHandler{
+        private class SelfFactoryImpl : IResourceRequestHandlerFactory{
+            private readonly ResourceRequestHandler me;
+
+            public SelfFactoryImpl(ResourceRequestHandler me){
+                this.me = me;
+            }
+
+            bool IResourceRequestHandlerFactory.HasHandlers { get; } = true;
+
+            [SuppressMessage("ReSharper", "RedundantAssignment")]
+            IResourceRequestHandler IResourceRequestHandlerFactory.GetResourceRequestHandler(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, bool isNavigation, bool isDownload, string requestInitiator, ref bool disableDefaultHandling){
+                disableDefaultHandling = me.ResourceHandlers.HasHandler(request);
+                return me;
+            }
+        }
+
+        public IResourceRequestHandlerFactory SelfFactory { get; }
+        public ResourceHandlers ResourceHandlers { get; }
+
+        protected ResourceRequestHandler(){
+            this.SelfFactory = new SelfFactoryImpl(this);
+            this.ResourceHandlers = new ResourceHandlers();
+        }
+
+        protected override IResourceHandler GetResourceHandler(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request){
+            return ResourceHandlers.GetHandler(request);
+        }
+    }
+}

Browser/Handling/ResourceRequestHandlerBase.cs

@@ -4,13 +4,12 @@ using System.Collections.Specialized;
 using System.Linq;
 using System.Text.RegularExpressions;
 using CefSharp;
-using CefSharp.Handler;
-using TweetDuck.Core.Handling.General;
-using TweetDuck.Core.Utils;
+using TweetDuck.Utils;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Core.Handling{
-    class RequestHandlerBase : DefaultRequestHandler{
-        private static readonly Regex TweetDeckResourceUrl = new Regex(@"/dist/(.*?)\.(.*?)\.(css|js)$", RegexOptions.Compiled);
+namespace TweetDuck.Browser.Handling{
+    class ResourceRequestHandlerBase : ResourceRequestHandler{
+        private static readonly Regex TweetDeckResourceUrl = new Regex(@"/dist/(.*?)\.(.*?)\.(css|js)$");
         private static readonly SortedList<string, string> TweetDeckHashes = new SortedList<string, string>(4);
 
         public static void LoadResourceRewriteRules(string rules){
@@ -21,36 +20,23 @@ namespace TweetDuck.Core.Handling{
             TweetDeckHashes.Clear();
 
             foreach(string rule in rules.Replace(" ", "").ToLower().Split(',')){
-                string[] split = rule.Split('=');
-
-                if (split.Length == 2){
-                    string key = split[0];
-                    string hash = split[1];
+                var (key, hash) = StringUtils.SplitInTwo(rule, '=') ?? throw new ArgumentException("A rule must have one '=' character: " + rule);
 
                 if (hash.All(chr => char.IsDigit(chr) || (chr >= 'a' && chr <= 'f'))){
                     TweetDeckHashes.Add(key, hash);
                 }
                 else{
-                        throw new ArgumentException("Invalid hash characters: "+rule);
-                    }
-                }
-                else{
-                    throw new ArgumentException("A rule must have exactly one '=' character: "+rule);
+                    throw new ArgumentException("Invalid hash characters: " + rule);
                 }
             }
         }
 
-        private readonly bool autoReload;
-
-        public RequestHandlerBase(bool autoReload){
-            this.autoReload = autoReload;
+        protected override CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback){
+            if (request.ResourceType == ResourceType.CspReport){
+                callback.Dispose();
+                return CefReturnValue.Cancel;
             }
 
-        public override bool OnOpenUrlFromTab(IWebBrowser browserControl, IBrowser browser, IFrame frame, string targetUrl, WindowOpenDisposition targetDisposition, bool userGesture){
-            return LifeSpanHandler.HandleLinkClick(browserControl, targetDisposition, targetUrl);
-        }
-
-        public override CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback){
             if (BrowserUtils.HasDevTools){
                 NameValueCollection headers = request.Headers;
                 headers.Remove("x-devtools-emulate-network-conditions-client-id");
@@ -60,7 +46,7 @@ namespace TweetDuck.Core.Handling{
             return base.OnBeforeResourceLoad(browserControl, browser, frame, request, callback);
         }
 
-        public override bool OnResourceResponse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response){
+        protected override bool OnResourceResponse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response){
             if ((request.ResourceType == ResourceType.Script || request.ResourceType == ResourceType.Stylesheet) && TweetDeckHashes.Count > 0){
                 string url = request.Url;
                 Match match = TweetDeckResourceUrl.Match(url);
@@ -79,11 +65,5 @@ namespace TweetDuck.Core.Handling{
 
             return base.OnResourceResponse(browserControl, browser, frame, request, response);
         }
-        
-        public override void OnRenderProcessTerminated(IWebBrowser browserControl, IBrowser browser, CefTerminationStatus status){
-            if (autoReload){
-                browser.Reload();
-            }
-        }
     }
 }

Browser/Handling/ResourceRequestHandlerBrowser.cs

@@ -0,0 +1,52 @@
+using CefSharp;
+using TweetDuck.Browser.Handling.Filters;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Twitter;
+
+namespace TweetDuck.Browser.Handling{
+    class ResourceRequestHandlerBrowser : ResourceRequestHandlerBase{
+        private const string UrlVendorResource = "/dist/vendor";
+        private const string UrlLoadingSpinner = "/backgrounds/spinner_blue";
+        private const string UrlVersionCheck = "/web/dist/version.json";
+
+        protected override CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback){
+            if (request.ResourceType == ResourceType.MainFrame){
+                if (request.Url.EndsWith("//twitter.com/")){
+                    request.Url = TwitterUrls.TweetDeck; // redirect plain twitter.com requests, fixes bugs with login 2FA
+                }
+            }
+            else if (request.ResourceType == ResourceType.Image){
+                if (request.Url.Contains(UrlLoadingSpinner)){
+                    request.Url = TwitterUtils.LoadingSpinner.Url;
+                }
+            }
+            else if (request.ResourceType == ResourceType.Script){
+                string url = request.Url;
+
+                if (url.Contains("analytics.")){
+                    callback.Dispose();
+                    return CefReturnValue.Cancel;
+                }
+                else if (url.Contains(UrlVendorResource)){
+                    request.SetHeaderByName("Accept-Encoding", "identity", overwrite: true);
+                }
+            }
+            else if (request.ResourceType == ResourceType.Xhr){
+                if (request.Url.Contains(UrlVersionCheck)){
+                    callback.Dispose();
+                    return CefReturnValue.Cancel;
+                }
+            }
+
+            return base.OnBeforeResourceLoad(browserControl, browser, frame, request, callback);
+        }
+
+        protected override IResponseFilter GetResourceResponseFilter(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response){
+            if (request.ResourceType == ResourceType.Script && request.Url.Contains(UrlVendorResource) && int.TryParse(response.Headers["Content-Length"], out int totalBytes)){
+                return new ResponseFilterVendor(totalBytes);
+            }
+
+            return base.GetResourceResponseFilter(browserControl, browser, frame, request, response);
+        }
+    }
+}

Browser/Notification/Example/FormNotificationExample.cs

@@ -1,18 +1,18 @@
 using System;
 using System.Windows.Forms;
 using CefSharp;
-using TweetDuck.Core.Controls;
-using TweetDuck.Plugins;
-using TweetDuck.Resources;
+using TweetDuck.Controls;
+using TweetLib.Core.Features.Notifications;
+using TweetLib.Core.Features.Plugins;
 
-namespace TweetDuck.Core.Notification.Example{
+namespace TweetDuck.Browser.Notification.Example{
     sealed class FormNotificationExample : FormNotificationMain{
         public override bool RequiresResize => true;
-        protected override bool CanDragWindow => Config.NotificationPosition == TweetNotification.Position.Custom;
+        protected override bool CanDragWindow => Config.NotificationPosition == DesktopNotification.Position.Custom;
 
         protected override FormBorderStyle NotificationBorderStyle{
             get{
-                if (Config.NotificationSize == TweetNotification.Size.Custom){
+                if (Config.NotificationSize == DesktopNotification.Size.Custom){
                     switch(base.NotificationBorderStyle){
                         case FormBorderStyle.FixedSingle: return FormBorderStyle.Sizable;
                         case FormBorderStyle.FixedToolWindow: return FormBorderStyle.SizableToolWindow;
@@ -23,22 +23,22 @@ namespace TweetDuck.Core.Notification.Example{
             }
         }
 
-        protected override string BodyClasses => base.BodyClasses+" td-example";
+        protected override string BodyClasses => base.BodyClasses + " td-example";
 
         public event EventHandler Ready;
 
-        private readonly TweetNotification exampleNotification;
+        private readonly DesktopNotification exampleNotification;
 
         public FormNotificationExample(FormBrowser owner, PluginManager pluginManager) : base(owner, pluginManager, false){
             browser.LoadingStateChanged += browser_LoadingStateChanged;
 
-            string exampleTweetHTML = ScriptLoader.LoadResourceSilent("pages/example.html")?.Replace("{avatar}", TweetNotification.AppLogo.Url) ?? string.Empty;
+            string exampleTweetHTML = Program.Resources.LoadSilent("pages/example.html")?.Replace("{avatar}", AppLogo.Url) ?? string.Empty;
 
             #if DEBUG
             exampleTweetHTML = exampleTweetHTML.Replace("</p>", @"</p><div style='margin-top:256px'>Scrollbar test padding...</div>");
             #endif
 
-            exampleNotification = new TweetNotification(string.Empty, string.Empty, "Home", exampleTweetHTML, 176, string.Empty, string.Empty);
+            exampleNotification = new DesktopNotification(string.Empty, string.Empty, "Home", exampleTweetHTML, 176, string.Empty, string.Empty);
         }
 
         private void browser_LoadingStateChanged(object sender, LoadingStateChangedEventArgs e){

Browser/Notification/FormNotificationBase.Designer.cs

@@ -1,21 +1,10 @@
-namespace TweetDuck.Core.Notification {
+namespace TweetDuck.Browser.Notification {
     partial class FormNotificationBase {
         /// <summary>
         /// Required designer variable.
         /// </summary>
         private System.ComponentModel.IContainer components = null;
 
-        /// <summary>
-        /// Clean up any resources being used.
-        /// </summary>
-        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
-        protected override void Dispose(bool disposing) {
-            if (disposing && (components != null)) {
-                components.Dispose();
-            }
-            base.Dispose(disposing);
-        }
-
         #region Windows Form Designer generated code
 
         /// <summary>
@@ -34,7 +23,7 @@
             this.BackColor = System.Drawing.SystemColors.Control;
             this.ClientSize = new System.Drawing.Size(284, 122);
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
-            this.Location = TweetDuck.Core.Controls.ControlExtensions.InvisibleLocation;
+            this.Location = TweetDuck.Controls.ControlExtensions.InvisibleLocation;
             this.MaximizeBox = false;
             this.MinimizeBox = false;
             this.Name = "FormNotification";

Browser/Notification/FormNotificationBase.cs

@@ -1,28 +1,36 @@
-using CefSharp.WinForms;
-using System.Drawing;
+using System.Drawing;
 using System.Windows.Forms;
+using CefSharp;
+using CefSharp.WinForms;
+using TweetDuck.Browser.Data;
+using TweetDuck.Browser.Handling;
+using TweetDuck.Browser.Handling.General;
 using TweetDuck.Configuration;
-using TweetDuck.Core.Bridge;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Handling;
-using TweetDuck.Core.Handling.General;
-using TweetDuck.Core.Other.Analytics;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
+using TweetDuck.Management.Analytics;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Notifications;
+using TweetLib.Core.Features.Twitter;
 
-namespace TweetDuck.Core.Notification{
+namespace TweetDuck.Browser.Notification{
     abstract partial class FormNotificationBase : Form, AnalyticsFile.IProvider{
+        public static readonly ResourceLink AppLogo = new ResourceLink("https://ton.twimg.com/tduck/avatar", ResourceHandler.FromByteArray(Properties.Resources.avatar, "image/png"));
+
+        protected const string BlankURL = TwitterUrls.TweetDeck + "/?blank";
+
+        public static string FontSize = null;
+        public static string HeadLayout = null;
+
         protected static UserConfig Config => Program.Config.User;
         
         protected static int FontSizeLevel{
-            get{
-                switch(TweetDeckBridge.FontSize){
-                    case "largest": return 4;
-                    case "large": return 3;
-                    case "small": return 1;
-                    case "smallest": return 0;
-                    default: return 2;
-                }
-            }
+            get => FontSize switch{
+                "largest"  => 4,
+                "large"    => 3,
+                "small"    => 1,
+                "smallest" => 0,
+                _          => 2
+            };
         }
 
         protected virtual Point PrimaryLocation{
@@ -30,7 +38,7 @@ namespace TweetDuck.Core.Notification{
                 Screen screen;
 
                 if (Config.NotificationDisplay > 0 && Config.NotificationDisplay <= Screen.AllScreens.Length){
-                    screen = Screen.AllScreens[Config.NotificationDisplay-1];
+                    screen = Screen.AllScreens[Config.NotificationDisplay - 1];
                 }
                 else{
                     screen = Screen.FromControl(owner);
@@ -39,21 +47,21 @@ namespace TweetDuck.Core.Notification{
                 int edgeDist = Config.NotificationEdgeDistance;
 
                 switch(Config.NotificationPosition){
-                    case TweetNotification.Position.TopLeft:
-                        return new Point(screen.WorkingArea.X+edgeDist, screen.WorkingArea.Y+edgeDist);
+                    case DesktopNotification.Position.TopLeft:
+                        return new Point(screen.WorkingArea.X + edgeDist, screen.WorkingArea.Y + edgeDist);
 
-                    case TweetNotification.Position.TopRight:
-                        return new Point(screen.WorkingArea.X+screen.WorkingArea.Width-edgeDist-Width, screen.WorkingArea.Y+edgeDist);
+                    case DesktopNotification.Position.TopRight:
+                        return new Point(screen.WorkingArea.X + screen.WorkingArea.Width - edgeDist - Width, screen.WorkingArea.Y + edgeDist);
 
-                    case TweetNotification.Position.BottomLeft:
-                        return new Point(screen.WorkingArea.X+edgeDist, screen.WorkingArea.Y+screen.WorkingArea.Height-edgeDist-Height);
+                    case DesktopNotification.Position.BottomLeft:
+                        return new Point(screen.WorkingArea.X + edgeDist, screen.WorkingArea.Y + screen.WorkingArea.Height - edgeDist - Height);
 
-                    case TweetNotification.Position.BottomRight:
-                        return new Point(screen.WorkingArea.X+screen.WorkingArea.Width-edgeDist-Width, screen.WorkingArea.Y+screen.WorkingArea.Height-edgeDist-Height);
+                    case DesktopNotification.Position.BottomRight:
+                        return new Point(screen.WorkingArea.X + screen.WorkingArea.Width - edgeDist - Width, screen.WorkingArea.Y + screen.WorkingArea.Height - edgeDist - Height);
 
-                    case TweetNotification.Position.Custom:
+                    case DesktopNotification.Position.Custom:
                         if (!Config.IsCustomNotificationPositionSet){
-                            Config.CustomNotificationPosition = new Point(screen.WorkingArea.X+screen.WorkingArea.Width-edgeDist-Width, screen.WorkingArea.Y+edgeDist);
+                            Config.CustomNotificationPosition = new Point(screen.WorkingArea.X + screen.WorkingArea.Width - edgeDist - Width, screen.WorkingArea.Y + edgeDist);
                             Config.Save();
                         }
 
@@ -94,14 +102,17 @@ namespace TweetDuck.Core.Notification{
         protected override bool ShowWithoutActivation => true;
         
         protected float DpiScale { get; }
-        protected double SizeScale => DpiScale*Config.ZoomLevel/100.0;
+        protected double SizeScale => DpiScale * Config.ZoomLevel / 100.0;
 
         protected readonly FormBrowser owner;
+
+        #pragma warning disable IDE0069 // Disposable fields should be disposed
         protected readonly ChromiumWebBrowser browser;
+        #pragma warning restore IDE0069 // Disposable fields should be disposed
 
         private readonly ResourceHandlerNotification resourceHandler = new ResourceHandlerNotification();
 
-        private TweetNotification currentNotification;
+        private DesktopNotification currentNotification;
         private int pauseCounter;
         
         public string CurrentTweetUrl => currentNotification?.TweetUrl;
@@ -121,16 +132,19 @@ namespace TweetDuck.Core.Notification{
             this.owner = owner;
             this.owner.FormClosed += owner_FormClosed;
             
-            ResourceHandlerFactory resourceHandlerFactory = new ResourceHandlerFactory();
-            resourceHandlerFactory.RegisterHandler(TwitterUtils.TweetDeckURL, this.resourceHandler);
-            resourceHandlerFactory.RegisterHandler(TweetNotification.AppLogo);
+            var resourceRequestHandler = new ResourceRequestHandlerBase();
+            var resourceHandlers = resourceRequestHandler.ResourceHandlers;
 
-            this.browser = new ChromiumWebBrowser("about:blank"){
+            resourceHandlers.Register(BlankURL, ResourceHandler.FromString(string.Empty));
+            resourceHandlers.Register(TwitterUrls.TweetDeck, this.resourceHandler);
+            resourceHandlers.Register(AppLogo);
+
+            this.browser = new ChromiumWebBrowser(BlankURL){
                 MenuHandler = new ContextMenuNotification(this, enableContextMenu),
                 JsDialogHandler = new JavaScriptDialogHandler(),
                 LifeSpanHandler = new LifeSpanHandler(),
                 RequestHandler = new RequestHandlerBase(false),
-                ResourceHandlerFactory = resourceHandlerFactory
+                ResourceRequestHandlerFactory = resourceRequestHandler.SelfFactory
             };
 
             this.browser.Dock = DockStyle.None;
@@ -140,8 +154,8 @@ namespace TweetDuck.Core.Notification{
             Controls.Add(browser);
 
             Disposed += (sender, args) => {
-                this.browser.Dispose();
                 this.owner.FormClosed -= owner_FormClosed;
+                this.browser.Dispose();
             };
 
             DpiScale = this.GetDPIScale();
@@ -150,6 +164,15 @@ namespace TweetDuck.Core.Notification{
             UpdateTitle();
         }
 
+        protected override void Dispose(bool disposing){
+            if (disposing){
+                components?.Dispose();
+                resourceHandler.Dispose();
+            }
+
+            base.Dispose(disposing);
+        }
+
         protected override void WndProc(ref Message m){
             if (m.Msg == 0x0112 && (m.WParam.ToInt32() & 0xFFF0) == 0xF010 && !CanDragWindow){ // WM_SYSCOMMAND, SC_MOVE
                 return;
@@ -167,7 +190,7 @@ namespace TweetDuck.Core.Notification{
         // notification methods
 
         public virtual void HideNotification(){
-            browser.Load("about:blank");
+            browser.Load(BlankURL);
             DisplayTooltip(null);
 
             Location = ControlExtensions.InvisibleLocation;
@@ -188,13 +211,13 @@ namespace TweetDuck.Core.Notification{
             }
         }
 
-        protected abstract string GetTweetHTML(TweetNotification tweet);
+        protected abstract string GetTweetHTML(DesktopNotification tweet);
 
-        protected virtual void LoadTweet(TweetNotification tweet){
+        protected virtual void LoadTweet(DesktopNotification tweet){
             currentNotification = tweet;
             resourceHandler.SetHTML(GetTweetHTML(tweet));
 
-            browser.Load(TwitterUtils.TweetDeckURL);
+            browser.Load(TwitterUrls.TweetDeck);
             DisplayTooltip(null);
         }
 

Browser/Notification/FormNotificationMain.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Notification {
+namespace TweetDuck.Browser.Notification {
     partial class FormNotificationMain {
         /// <summary>
         /// Required designer variable.
@@ -26,7 +26,7 @@
             this.components = new System.ComponentModel.Container();
             this.timerDisplayDelay = new System.Windows.Forms.Timer(this.components);
             this.timerProgress = new System.Windows.Forms.Timer(this.components);
-            this.progressBarTimer = new TweetDuck.Core.Controls.FlatProgressBar();
+            this.progressBarTimer = new TweetDuck.Controls.FlatProgressBar();
             this.SuspendLayout();
             // 
             // timerDisplayDelay

Browser/Notification/FormNotificationMain.cs

@@ -1,17 +1,20 @@
-using CefSharp;
-using System;
+using System;
 using System.Drawing;
 using System.Windows.Forms;
-using TweetDuck.Core.Bridge;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Handling;
-using TweetDuck.Core.Utils;
-using TweetDuck.Data;
+using CefSharp;
+using TweetDuck.Browser.Adapters;
+using TweetDuck.Browser.Bridge;
+using TweetDuck.Browser.Handling;
+using TweetDuck.Controls;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Enums;
-using TweetDuck.Resources;
+using TweetDuck.Utils;
+using TweetLib.Core.Data;
+using TweetLib.Core.Features.Notifications;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Enums;
+using TweetLib.Core.Features.Twitter;
 
-namespace TweetDuck.Core.Notification{
+namespace TweetDuck.Browser.Notification{
     abstract partial class FormNotificationMain : FormNotificationBase{
         private readonly PluginManager plugins;
         private readonly int timerBarHeight;
@@ -23,6 +26,8 @@ namespace TweetDuck.Core.Notification{
         private IntPtr mouseHook;
         private bool blockXButtonUp;
 
+        private int currentOpacity;
+
         private bool? prevDisplayTimer;
         private int? prevFontSize;
 
@@ -44,32 +49,22 @@ namespace TweetDuck.Core.Notification{
         }
 
         private int BaseClientWidth{
-            get{
-                switch(Config.NotificationSize){
-                    default:
-                        return BrowserUtils.Scale(284, SizeScale*(1.0+0.05*FontSizeLevel));
-
-                    case TweetNotification.Size.Custom:
-                        return Config.CustomNotificationSize.Width;
-                }
-            }
+            get => Config.NotificationSize switch{
+                DesktopNotification.Size.Custom => Config.CustomNotificationSize.Width,
+                _ => BrowserUtils.Scale(284, SizeScale * (1.0 + 0.05 * FontSizeLevel))
+            };
         }
 
         private int BaseClientHeight{
-            get{
-                switch(Config.NotificationSize){
-                    default:
-                        return BrowserUtils.Scale(122, SizeScale*(1.0+0.08*FontSizeLevel));
-
-                    case TweetNotification.Size.Custom:
-                        return Config.CustomNotificationSize.Height;
-                }
-            }
+            get => Config.NotificationSize switch{
+                DesktopNotification.Size.Custom => Config.CustomNotificationSize.Height,
+                _ => BrowserUtils.Scale(122, SizeScale * (1.0 + 0.08 * FontSizeLevel))
+            };
         }
 
         protected virtual string BodyClasses => IsCursorOverBrowser ? "td-notification td-hover" : "td-notification";
         
-        public Size BrowserSize => Config.DisplayNotificationTimer ? new Size(ClientSize.Width, ClientSize.Height-timerBarHeight) : ClientSize;
+        public Size BrowserSize => Config.DisplayNotificationTimer ? new Size(ClientSize.Width, ClientSize.Height - timerBarHeight) : ClientSize;
 
         protected FormNotificationMain(FormBrowser owner, PluginManager pluginManager, bool enableContextMenu) : base(owner, enableContextMenu){
             InitializeComponent();
@@ -78,17 +73,26 @@ namespace TweetDuck.Core.Notification{
             this.timerBarHeight = BrowserUtils.Scale(4, DpiScale);
             
             browser.KeyboardHandler = new KeyboardHandlerNotification(this);
-            browser.RegisterAsyncJsObject("$TD", new TweetDeckBridge.Notification(owner, this));
+            browser.RegisterJsBridge("$TD", new TweetDeckBridge.Notification(owner, this));
 
             browser.LoadingStateChanged += Browser_LoadingStateChanged;
             browser.FrameLoadEnd += Browser_FrameLoadEnd;
 
-            plugins.Register(browser, PluginEnvironment.Notification, this);
+            plugins.Register(PluginEnvironment.Notification, new PluginDispatcher(browser, url => TwitterUrls.IsTweetDeck(url) && url != BlankURL));
 
             mouseHookDelegate = MouseHookProc;
             Disposed += (sender, args) => StopMouseHook(true);
         }
 
+        // helpers
+
+        private void SetOpacity(int opacity){
+            if (currentOpacity != opacity){
+                currentOpacity = opacity;
+                Opacity = opacity / 100.0;
+            }
+        }
+
         // mouse wheel hook
 
         private void StartMouseHook(){
@@ -110,7 +114,15 @@ namespace TweetDuck.Core.Notification{
                 int eventType = wParam.ToInt32();
 
                 if (eventType == NativeMethods.WM_MOUSEWHEEL && IsCursorOverBrowser){
-                    browser.SendMouseWheelEvent(0, 0, 0, BrowserUtils.Scale(NativeMethods.GetMouseHookData(lParam), Config.NotificationScrollSpeed*0.01), CefEventFlags.None);
+                    int delta = BrowserUtils.Scale(NativeMethods.GetMouseHookData(lParam), Config.NotificationScrollSpeed * 0.01);
+
+                    if (Config.EnableSmoothScrolling){
+                        browser.ExecuteScriptAsync("window.TDGF_scrollSmoothly", (int)Math.Round(-delta / 0.6));
+                    }
+                    else{
+                        browser.SendMouseWheelEvent(0, 0, 0, delta, CefEventFlags.None);
+                    }
+
                     return NativeMethods.HOOK_HANDLED;
                 }
                 else if (eventType == NativeMethods.WM_XBUTTONDOWN && DesktopBounds.Contains(Cursor.Position)){
@@ -151,7 +163,7 @@ namespace TweetDuck.Core.Notification{
         }
 
         private void Browser_LoadingStateChanged(object sender, LoadingStateChangedEventArgs e){
-            if (!e.IsLoading && browser.Address != "about:blank"){
+            if (!e.IsLoading && browser.Address != BlankURL){
                 this.InvokeSafe(() => {
                     Visible = true; // ensures repaint before moving the window to a visible location
                     timerDisplayDelay.Start();
@@ -162,9 +174,9 @@ namespace TweetDuck.Core.Notification{
         private void Browser_FrameLoadEnd(object sender, FrameLoadEndEventArgs e){
             IFrame frame = e.Frame;
 
-            if (frame.IsMain && browser.Address != "about:blank"){
+            if (frame.IsMain && browser.Address != BlankURL){
                 frame.ExecuteJavaScriptAsync(PropertyBridge.GenerateScript(PropertyBridge.Environment.Notification));
-                ScriptLoader.ExecuteFile(frame, "notification.js", this);
+                CefScriptExecutor.RunFile(frame, "notification.js");
             }
         }
 
@@ -174,14 +186,25 @@ namespace TweetDuck.Core.Notification{
         }
 
         private void timerHideProgress_Tick(object sender, EventArgs e){
-            if (Bounds.Contains(Cursor.Position) || FreezeTimer || ContextMenuOpen){
+            bool isCursorInside = Bounds.Contains(Cursor.Position);
+
+            if (isCursorInside){
+                StartMouseHook();
+                SetOpacity(100);
+            }
+            else{
+                StopMouseHook(false);
+                SetOpacity(Config.NotificationWindowOpacity);
+            }
+
+            if (isCursorInside || FreezeTimer || ContextMenuOpen){
                 return;
             }
 
             timeLeft -= timerProgress.Interval;
 
-            int value = BrowserUtils.Scale(progressBarTimer.Maximum+25, (totalTime-timeLeft)/(double)totalTime);
-            progressBarTimer.SetValueInstant(Config.NotificationTimerCountDown ? progressBarTimer.Maximum-value : value);
+            int value = BrowserUtils.Scale(progressBarTimer.Maximum + 25, (totalTime - timeLeft) / (double)totalTime);
+            progressBarTimer.SetValueInstant(Config.NotificationTimerCountDown ? progressBarTimer.Maximum - value : value);
 
             if (timeLeft <= 0){
                 FinishCurrentNotification();
@@ -190,7 +213,7 @@ namespace TweetDuck.Core.Notification{
 
         // notification methods
 
-        public virtual void ShowNotification(TweetNotification notification){
+        public virtual void ShowNotification(DesktopNotification notification){
             LoadTweet(notification);
         }
 
@@ -227,8 +250,8 @@ namespace TweetDuck.Core.Notification{
             }
         }
 
-        protected override string GetTweetHTML(TweetNotification tweet){
-            string html = tweet.GenerateHtml(BodyClasses, this);
+        protected override string GetTweetHTML(DesktopNotification tweet){
+            string html = tweet.GenerateHtml(BodyClasses, HeadLayout, Config.CustomNotificationCSS);
 
             foreach(InjectedHTML injection in plugins.NotificationInjections){
                 html = injection.InjectInto(html);
@@ -237,7 +260,7 @@ namespace TweetDuck.Core.Notification{
             return html;
         }
 
-        protected override void LoadTweet(TweetNotification tweet){
+        protected override void LoadTweet(DesktopNotification tweet){
             timerProgress.Stop();
             totalTime = timeLeft = tweet.GetDisplayDuration(Config.NotificationDurationValue);
             progressBarTimer.Value = Config.NotificationTimerCountDown ? progressBarTimer.Maximum : progressBarTimer.Minimum;
@@ -247,7 +270,7 @@ namespace TweetDuck.Core.Notification{
 
         protected override void SetNotificationSize(int width, int height){
             if (Config.DisplayNotificationTimer){
-                ClientSize = new Size(width, height+timerBarHeight);
+                ClientSize = new Size(width, height + timerBarHeight);
                 progressBarTimer.Visible = true;
             }
             else{
@@ -264,8 +287,8 @@ namespace TweetDuck.Core.Notification{
                 SetNotificationSize(BaseClientWidth, BaseClientHeight);
             }
 
+            SetOpacity(IsCursorOverBrowser ? 100 : Config.NotificationWindowOpacity);
             MoveToVisibleLocation();
-            StartMouseHook();
         }
 
         protected virtual void OnNotificationReady(){

Browser/Notification/FormNotificationTweet.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Notification {
+namespace TweetDuck.Browser.Notification {
     partial class FormNotificationTweet {
         /// <summary>
         /// Required designer variable.

Browser/Notification/FormNotificationTweet.cs

@@ -1,11 +1,12 @@
 using System;
 using System.Collections.Generic;
 using System.Drawing;
-using TweetDuck.Plugins;
 using System.Windows.Forms;
-using TweetDuck.Core.Utils;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Notifications;
+using TweetLib.Core.Features.Plugins;
 
-namespace TweetDuck.Core.Notification{
+namespace TweetDuck.Browser.Notification{
     sealed partial class FormNotificationTweet : FormNotificationMain{
         private const int NonIntrusiveIdleLimit = 30;
         private const int TrimMinimum = 32;
@@ -25,7 +26,7 @@ namespace TweetDuck.Core.Notification{
             }
         }
 
-        private readonly Queue<TweetNotification> tweetQueue = new Queue<TweetNotification>(4);
+        private readonly Queue<DesktopNotification> tweetQueue = new Queue<DesktopNotification>(4);
         private bool needsTrim;
         private bool hasTemporarilyMoved;
 
@@ -81,7 +82,7 @@ namespace TweetDuck.Core.Notification{
 
         // notification methods
 
-        public override void ShowNotification(TweetNotification notification){
+        public override void ShowNotification(DesktopNotification notification){
             tweetQueue.Enqueue(notification);
             
             if (!IsPaused){
@@ -153,7 +154,7 @@ namespace TweetDuck.Core.Notification{
             base.UpdateTitle();
 
             if (tweetQueue.Count > 0){
-                Text = Text+" ("+tweetQueue.Count+" more left)";
+                Text = Text + " (" + tweetQueue.Count + " more left)";
             }
         }
 

Browser/Notification/Screenshot/FormNotificationScreenshotable.cs

@@ -3,14 +3,15 @@ using System.Drawing;
 using System.Drawing.Imaging;
 using System.Windows.Forms;
 using CefSharp;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Other;
-using TweetDuck.Core.Utils;
-using TweetDuck.Data;
-using TweetDuck.Plugins;
-using TweetDuck.Resources;
+using TweetDuck.Browser.Adapters;
+using TweetDuck.Controls;
+using TweetDuck.Dialogs;
+using TweetDuck.Utils;
+using TweetLib.Core.Data;
+using TweetLib.Core.Features.Notifications;
+using TweetLib.Core.Features.Plugins;
 
-namespace TweetDuck.Core.Notification.Screenshot{
+namespace TweetDuck.Browser.Notification.Screenshot{
     sealed class FormNotificationScreenshotable : FormNotificationBase{
         protected override bool CanDragWindow => false;
 
@@ -22,31 +23,30 @@ namespace TweetDuck.Core.Notification.Screenshot{
 
             int realWidth = BrowserUtils.Scale(width, DpiScale);
 
-            browser.RegisterAsyncJsObject("$TD_NotificationScreenshot", new ScreenshotBridge(this, SetScreenshotHeight, callback));
+            browser.RegisterJsBridge("$TD_NotificationScreenshot", new ScreenshotBridge(this, SetScreenshotHeight, callback));
 
             browser.LoadingStateChanged += (sender, args) => {
                 if (args.IsLoading){
                     return;
                 }
 
-                string script = ScriptLoader.LoadResourceSilent("screenshot.js");
+                string script = Program.Resources.LoadSilent("screenshot.js");
                 
                 if (script == null){
                     this.InvokeAsyncSafe(callback);
                     return;
                 }
 
-                using(IFrame frame = args.Browser.MainFrame){
-                    ScriptLoader.ExecuteScript(frame, script.Replace("{width}", realWidth.ToString()).Replace("{frames}", TweetScreenshotManager.WaitFrames.ToString()), "gen:screenshot");
-                }
+                using IFrame frame = args.Browser.MainFrame;
+                CefScriptExecutor.RunScript(frame, script.Replace("{width}", realWidth.ToString()).Replace("{frames}", TweetScreenshotManager.WaitFrames.ToString()), "gen:screenshot");
             };
             
             SetNotificationSize(realWidth, 1024);
-            LoadTweet(new TweetNotification(string.Empty, string.Empty, string.Empty, html, 0, string.Empty, string.Empty));
+            LoadTweet(new DesktopNotification(string.Empty, string.Empty, string.Empty, html, 0, string.Empty, string.Empty));
         }
 
-        protected override string GetTweetHTML(TweetNotification tweet){
-            string html = tweet.GenerateHtml("td-screenshot", this);
+        protected override string GetTweetHTML(DesktopNotification tweet){
+            string html = tweet.GenerateHtml("td-screenshot", HeadLayout, Config.CustomNotificationCSS);
 
             foreach(InjectedHTML injection in plugins.NotificationInjections){
                 html = injection.InjectInto(html);
@@ -82,7 +82,8 @@ namespace TweetDuck.Core.Notification.Screenshot{
                 return false;
             }
             else{
-                using(Bitmap bmp = new Bitmap(ClientSize.Width, Math.Max(1, height), PixelFormat.Format32bppRgb)){
+                using Bitmap bmp = new Bitmap(ClientSize.Width, Math.Max(1, height), PixelFormat.Format32bppRgb);
+
                 try{
                     NativeMethods.RenderSourceIntoBitmap(context, bmp);
                 }finally{
@@ -94,5 +95,4 @@ namespace TweetDuck.Core.Notification.Screenshot{
             }
         }
     }
-    }
 }

Browser/Notification/Screenshot/ScreenshotBridge.cs

@@ -1,8 +1,10 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
+using TweetDuck.Controls;
 
-namespace TweetDuck.Core.Notification.Screenshot{
+namespace TweetDuck.Browser.Notification.Screenshot{
+    [SuppressMessage("ReSharper", "UnusedMember.Global")]
     sealed class ScreenshotBridge{
         private readonly Control owner;
 

Browser/Notification/Screenshot/TweetScreenshotManager.cs

@@ -8,8 +8,8 @@
 
 using System;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Plugins;
+using TweetDuck.Controls;
+using TweetLib.Core.Features.Plugins;
 
 #if GEN_SCREENSHOT_FRAMES
 using System.Drawing.Imaging;
@@ -17,7 +17,7 @@ using System.IO;
 using TweetDuck.Core.Utils;
 #endif
 
-namespace TweetDuck.Core.Notification.Screenshot{
+namespace TweetDuck.Browser.Notification.Screenshot{
     sealed class TweetScreenshotManager : IDisposable{
         private readonly FormBrowser owner;
         private readonly PluginManager plugins;
@@ -134,9 +134,9 @@ namespace TweetDuck.Core.Notification.Screenshot{
         private void debugger_Tick(object sender, EventArgs e){
             if (frameCounter < 63 && screenshot.TakeScreenshot(true)){
                 try{
-                    Clipboard.GetImage()?.Save(Path.Combine(DebugScreenshotPath, "frame_"+(++frameCounter)+".png"), ImageFormat.Png);
+                    Clipboard.GetImage()?.Save(Path.Combine(DebugScreenshotPath, "frame_" + (++frameCounter) + ".png"), ImageFormat.Png);
                 }catch{
-                    System.Diagnostics.Debug.WriteLine("Failed generating frame "+frameCounter);
+                    System.Diagnostics.Debug.WriteLine("Failed generating frame " + frameCounter);
                 }
             }
             else{

Browser/Notification/SoundNotification.cs

@@ -0,0 +1,48 @@
+using System.Drawing;
+using System.IO;
+using System.Windows.Forms;
+using CefSharp;
+using TweetDuck.Controls;
+using TweetDuck.Dialogs;
+using TweetDuck.Dialogs.Settings;
+using TweetDuck.Management;
+
+namespace TweetDuck.Browser.Notification{
+    static class SoundNotification{
+        public const string SupportedFormats = "*.wav;*.ogg;*.mp3;*.flac;*.opus;*.weba;*.webm";
+        
+        public static IResourceHandler CreateFileHandler(string path){
+            string mimeType = Path.GetExtension(path) switch{
+                ".weba" => "audio/webm",
+                ".webm" => "audio/webm",
+                ".wav"  => "audio/wav",
+                ".ogg"  => "audio/ogg",
+                ".mp3"  => "audio/mp3",
+                ".flac" => "audio/flac",
+                ".opus" => "audio/ogg; codecs=opus",
+                _       => null
+            };
+
+            try{
+                return ResourceHandler.FromFilePath(path, mimeType);
+            }catch{
+                FormBrowser browser = FormManager.TryFind<FormBrowser>();
+
+                browser?.InvokeAsyncSafe(() => {
+                    using FormMessage form = new FormMessage("Sound Notification Error", "Could not find custom notification sound file:\n" + path, MessageBoxIcon.Error);
+                    form.AddButton(FormMessage.Ignore, ControlType.Cancel | ControlType.Focused);
+                        
+                    Button btnViewOptions = form.AddButton("View Options");
+                    btnViewOptions.Width += 16;
+                    btnViewOptions.Location = new Point(btnViewOptions.Location.X - 16, btnViewOptions.Location.Y);
+
+                    if (form.ShowDialog() == DialogResult.OK && form.ClickedButton == btnViewOptions){
+                        browser.OpenSettings(typeof(TabSettingsSounds));
+                    }
+                });
+                
+                return null;
+            }
+        }
+    }
+}

Browser/TrayIcon.Designer.cs

@@ -1,21 +1,10 @@
-namespace TweetDuck.Core.Other {
+namespace TweetDuck.Browser {
     partial class TrayIcon {
         /// <summary> 
         /// Required designer variable.
         /// </summary>
         private System.ComponentModel.IContainer components = null;
 
-        /// <summary> 
-        /// Clean up any resources being used.
-        /// </summary>
-        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
-        protected override void Dispose(bool disposing) {
-            if (disposing && (components != null)) {
-                components.Dispose();
-            }
-            base.Dispose(disposing);
-        }
-
         #region Component Designer generated code
 
         /// <summary> 

Browser/TrayIcon.cs

@@ -4,7 +4,7 @@ using System.Windows.Forms;
 using TweetDuck.Configuration;
 using Res = TweetDuck.Properties.Resources;
 
-namespace TweetDuck.Core.Other{
+namespace TweetDuck.Browser{
     sealed partial class TrayIcon : Component{
         public enum Behavior{ // keep order
             Disabled, DisplayOnly, MinimizeToTray, CloseToTray, Combined
@@ -63,6 +63,15 @@ namespace TweetDuck.Core.Other{
             container.Add(this);
         }
 
+        protected override void Dispose(bool disposing){
+            if (disposing){
+                components?.Dispose();
+                contextMenu.Dispose();
+            }
+
+            base.Dispose(disposing);
+        }
+
         private void UpdateIcon(){
             if (Visible){
                 notifyIcon.Icon = hasNotifications ? Res.icon_tray_new : Config.MuteNotifications ? Res.icon_tray_muted : Res.icon_tray;

Browser/TweetDeckBrowser.cs

@@ -4,18 +4,22 @@ using System.Text;
 using System.Windows.Forms;
 using CefSharp;
 using CefSharp.WinForms;
+using TweetDuck.Browser.Adapters;
+using TweetDuck.Browser.Bridge;
+using TweetDuck.Browser.Data;
+using TweetDuck.Browser.Handling;
+using TweetDuck.Browser.Handling.General;
+using TweetDuck.Browser.Notification;
 using TweetDuck.Configuration;
-using TweetDuck.Core.Bridge;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Handling;
-using TweetDuck.Core.Handling.General;
-using TweetDuck.Core.Notification;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Enums;
-using TweetDuck.Resources;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Enums;
+using TweetLib.Core.Features.Twitter;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Core{
+namespace TweetDuck.Browser{
     sealed class TweetDeckBrowser : IDisposable{
         private static UserConfig Config => Program.Config.User;
 
@@ -35,24 +39,26 @@ namespace TweetDuck.Core{
                     return false;
                 }
 
-                using(IFrame frame = browser.GetBrowser().MainFrame){
-                    return TwitterUtils.IsTweetDeckWebsite(frame);
-                }
+                using IFrame frame = browser.GetBrowser().MainFrame;
+                return TwitterUrls.IsTweetDeck(frame.Url);
             }
         }
         
         private readonly ChromiumWebBrowser browser;
-        private readonly ResourceHandlerFactory resourceHandlerFactory = new ResourceHandlerFactory();
+        private readonly ResourceHandlers resourceHandlers;
 
         private string prevSoundNotificationPath = null;
 
         public TweetDeckBrowser(FormBrowser owner, PluginManager plugins, TweetDeckBridge tdBridge, UpdateBridge updateBridge){
-            resourceHandlerFactory.RegisterHandler(TweetNotification.AppLogo);
-            resourceHandlerFactory.RegisterHandler(TwitterUtils.LoadingSpinner);
+            var resourceRequestHandler = new ResourceRequestHandlerBrowser();
+            resourceHandlers = resourceRequestHandler.ResourceHandlers;
+
+            resourceHandlers.Register(FormNotificationBase.AppLogo);
+            resourceHandlers.Register(TwitterUtils.LoadingSpinner);
 
             RequestHandlerBrowser requestHandler = new RequestHandlerBrowser();
             
-            this.browser = new ChromiumWebBrowser(TwitterUtils.TweetDeckURL){
+            this.browser = new ChromiumWebBrowser(TwitterUrls.TweetDeck){
                 DialogHandler = new FileDialogHandler(),
                 DragHandler = new DragHandlerBrowser(requestHandler),
                 MenuHandler = new ContextMenuBrowser(owner),
@@ -60,7 +66,7 @@ namespace TweetDuck.Core{
                 KeyboardHandler = new KeyboardHandlerBrowser(owner),
                 LifeSpanHandler = new LifeSpanHandler(),
                 RequestHandler = requestHandler,
-                ResourceHandlerFactory = resourceHandlerFactory
+                ResourceRequestHandlerFactory = resourceRequestHandler.SelfFactory
             };
 
             this.browser.LoadingStateChanged += browser_LoadingStateChanged;
@@ -68,8 +74,8 @@ namespace TweetDuck.Core{
             this.browser.FrameLoadEnd += browser_FrameLoadEnd;
             this.browser.LoadError += browser_LoadError;
 
-            this.browser.RegisterAsyncJsObject("$TD", tdBridge);
-            this.browser.RegisterAsyncJsObject("$TDU", updateBridge);
+            this.browser.RegisterJsBridge("$TD", tdBridge);
+            this.browser.RegisterJsBridge("$TDU", updateBridge);
             
             this.browser.BrowserSettings.BackgroundColor = (uint)TwitterUtils.BackgroundColor.ToArgb();
             this.browser.Dock = DockStyle.None;
@@ -77,7 +83,7 @@ namespace TweetDuck.Core{
             this.browser.SetupZoomEvents();
             
             owner.Controls.Add(browser);
-            plugins.Register(browser, PluginEnvironment.Browser, owner, true);
+            plugins.Register(PluginEnvironment.Browser, new PluginDispatcher(browser, TwitterUrls.IsTweetDeck));
             
             Config.MuteToggled += Config_MuteToggled;
             Config.SoundNotificationChanged += Config_SoundNotificationInfoChanged;
@@ -85,6 +91,12 @@ namespace TweetDuck.Core{
 
         // setup and management
 
+        public void PrepareSize(Size size){
+            if (!Ready){
+                browser.Size = size;
+            }
+        }
+
         private void OnBrowserReady(){
             if (!Ready){
                 browser.Location = Point.Empty;
@@ -121,14 +133,16 @@ namespace TweetDuck.Core{
             IFrame frame = e.Frame;
 
             if (frame.IsMain){
-                if (TwitterUtils.IsTwitterWebsite(frame)){
-                    string css = ScriptLoader.LoadResource("styles/twitter.css", browser);
-                    resourceHandlerFactory.RegisterHandler(TwitterStyleUrl, ResourceHandler.FromString(css, mimeType: "text/css"));
+                string url = frame.Url;
 
-                    ScriptLoader.ExecuteFile(frame, "twitter.js", browser);
+                if (TwitterUrls.IsTwitter(url)){
+                    string css = Program.Resources.Load("styles/twitter.css");
+                    resourceHandlers.Register(TwitterStyleUrl, ResourceHandler.FromString(css, mimeType: "text/css"));
+
+                    CefScriptExecutor.RunFile(frame, "twitter.js");
                 }
                 
-                if (!TwitterUtils.IsTwitterLogin2FactorWebsite(frame)){
+                if (!TwitterUrls.IsTwitterLogin2Factor(url)){
                     frame.ExecuteJavaScriptAsync(TwitterUtils.BackgroundColorOverride);
                 }
             }
@@ -136,11 +150,12 @@ namespace TweetDuck.Core{
 
         private void browser_FrameLoadEnd(object sender, FrameLoadEndEventArgs e){
             IFrame frame = e.Frame;
+            string url = frame.Url;
 
             if (frame.IsMain){
-                if (TwitterUtils.IsTweetDeckWebsite(frame)){
+                if (TwitterUrls.IsTweetDeck(url)){
                     UpdateProperties();
-                    ScriptLoader.ExecuteFile(frame, "code.js", browser);
+                    CefScriptExecutor.RunFile(frame, "code.js");
 
                     InjectBrowserCSS();
                     ReinjectCustomCSS(Config.CustomBrowserCSS);
@@ -149,19 +164,19 @@ namespace TweetDuck.Core{
                     TweetDeckBridge.ResetStaticProperties();
 
                     if (Arguments.HasFlag(Arguments.ArgIgnoreGDPR)){
-                        ScriptLoader.ExecuteScript(frame, "TD.storage.Account.prototype.requiresConsent = function(){ return false; }", "gen:gdpr");
+                        CefScriptExecutor.RunScript(frame, "TD.storage.Account.prototype.requiresConsent = function(){ return false; }", "gen:gdpr");
                     }
 
                     if (Config.FirstRun){
-                        ScriptLoader.ExecuteFile(frame, "introduction.js", browser);
+                        CefScriptExecutor.RunFile(frame, "introduction.js");
                     }
                 }
 
-                ScriptLoader.ExecuteFile(frame, "update.js", browser);
+                CefScriptExecutor.RunFile(frame, "update.js");
             }
 
-            if (frame.Url == ErrorUrl){
-                resourceHandlerFactory.UnregisterHandler(ErrorUrl);
+            if (url == ErrorUrl){
+                resourceHandlers.Unregister(ErrorUrl);
             }
         }
 
@@ -171,10 +186,13 @@ namespace TweetDuck.Core{
             }
 
             if (!e.FailedUrl.StartsWith("http://td/", StringComparison.Ordinal)){
-                string errorPage = ScriptLoader.LoadResourceSilent("pages/error.html");
+                string errorPage = Program.Resources.LoadSilent("pages/error.html");
 
                 if (errorPage != null){
-                    resourceHandlerFactory.RegisterHandler(ErrorUrl, ResourceHandler.FromString(errorPage.Replace("{err}", BrowserUtils.GetErrorName(e.ErrorCode))));
+                    string errorName = Enum.GetName(typeof(CefErrorCode), e.ErrorCode);
+                    string errorTitle = StringUtils.ConvertPascalCaseToScreamingSnakeCase(errorName ?? string.Empty);
+
+                    resourceHandlers.Register(ErrorUrl, ResourceHandler.FromString(errorPage.Replace("{err}", errorTitle)));
                     browser.Load(ErrorUrl);
                 }
             }
@@ -194,10 +212,10 @@ namespace TweetDuck.Core{
                 prevSoundNotificationPath = newNotificationPath;
 
                 if (hasCustomSound){
-                    resourceHandlerFactory.RegisterHandler(soundUrl, SoundNotification.CreateFileHandler(newNotificationPath));
+                    resourceHandlers.Register(soundUrl, SoundNotification.CreateFileHandler(newNotificationPath));
                 }
                 else{
-                    resourceHandlerFactory.UnregisterHandler(soundUrl);
+                    resourceHandlers.Unregister(soundUrl);
                 }
             }
 
@@ -217,7 +235,7 @@ namespace TweetDuck.Core{
         // javascript calls
 
         public void ReloadToTweetDeck(){
-            browser.ExecuteScriptAsync($"if(window.TDGF_reload)window.TDGF_reload();else window.location.href='{TwitterUtils.TweetDeckURL}'");
+            browser.ExecuteScriptAsync($"if(window.TDGF_reload)window.TDGF_reload();else window.location.href='{TwitterUrls.TweetDeck}'");
         }
 
         public void UpdateProperties(){
@@ -225,7 +243,7 @@ namespace TweetDuck.Core{
         }
 
         public void InjectBrowserCSS(){
-            browser.ExecuteScriptAsync("TDGF_injectBrowserCSS", ScriptLoader.LoadResource("styles/browser.css", browser)?.TrimEnd() ?? string.Empty);
+            browser.ExecuteScriptAsync("TDGF_injectBrowserCSS", Program.Resources.Load("styles/browser.css")?.TrimEnd() ?? string.Empty);
         }
 
         public void ReinjectCustomCSS(string css){
@@ -265,7 +283,7 @@ namespace TweetDuck.Core{
         }
 
         public void OpenDevTools(){
-            browser.ShowDevTools();
+            browser.OpenDevToolsCustom();
         }
     }
 }

Configuration/Arguments.cs

@@ -1,5 +1,5 @@
 using System;
-using TweetDuck.Data;
+using TweetLib.Core.Collections;
 
 namespace TweetDuck.Configuration{
     static class Arguments{
@@ -22,8 +22,8 @@ namespace TweetDuck.Configuration{
             return Current.HasFlag(flag);
         }
 
-        public static string GetValue(string key, string defaultValue){
-            return Current.GetValue(key, defaultValue);
+        public static string GetValue(string key){
+            return Current.GetValue(key);
         }
 
         public static CommandLineArgs GetCurrentClean(){

Configuration/ConfigManager.cs

@@ -1,13 +1,13 @@
 using System;
-using System.Collections.Generic;
 using System.Drawing;
-using TweetDuck.Configuration.Instance;
-using TweetDuck.Core.Utils;
-using TweetDuck.Data;
-using TweetDuck.Data.Serialization;
+using TweetDuck.Browser.Data;
+using TweetLib.Core.Features.Plugins.Config;
+using TweetLib.Core.Serialization.Converters;
+using TweetLib.Core.Systems.Configuration;
+using TweetLib.Core.Utils;
 
 namespace TweetDuck.Configuration{
-    sealed class ConfigManager{
+    sealed class ConfigManager : IConfigManager{
         public UserConfig User { get; }
         public SystemConfig System { get; }
         public PluginConfig Plugins { get; }
@@ -16,7 +16,7 @@ namespace TweetDuck.Configuration{
 
         private readonly FileConfigInstance<UserConfig> infoUser;
         private readonly FileConfigInstance<SystemConfig> infoSystem;
-        private readonly PluginConfigInstance infoPlugins;
+        private readonly PluginConfigInstance<PluginConfig> infoPlugins;
 
         private readonly IConfigInstance<BaseConfig>[] infoList;
 
@@ -28,7 +28,7 @@ namespace TweetDuck.Configuration{
             infoList = new IConfigInstance<BaseConfig>[]{
                 infoUser = new FileConfigInstance<UserConfig>(Program.UserConfigFilePath, User, "program options"),
                 infoSystem = new FileConfigInstance<SystemConfig>(Program.SystemConfigFilePath, System, "system options"),
-                infoPlugins = new PluginConfigInstance(Program.PluginConfigFilePath, Plugins)
+                infoPlugins = new PluginConfigInstance<PluginConfig>(Program.PluginConfigFilePath, Plugins)
             };
 
             // TODO refactor further
@@ -70,59 +70,13 @@ namespace TweetDuck.Configuration{
             infoPlugins.Reload();
         }
 
-        private void TriggerProgramRestartRequested(){
+        void IConfigManager.TriggerProgramRestartRequested(){
             ProgramRestartRequested?.Invoke(this, EventArgs.Empty);
         }
 
-        private IConfigInstance<BaseConfig> GetInstanceInfo(BaseConfig instance){
+        IConfigInstance<BaseConfig> IConfigManager.GetInstanceInfo(BaseConfig instance){
             Type instanceType = instance.GetType();
             return Array.Find(infoList, info => info.Instance.GetType() == instanceType); // TODO handle null
         }
-
-        public abstract class BaseConfig{
-            private readonly ConfigManager configManager;
-
-            protected BaseConfig(ConfigManager configManager){
-                this.configManager = configManager;
-            }
-
-            // Management
-
-            public void Save(){
-                configManager.GetInstanceInfo(this).Save();
-            }
-
-            public void Reload(){
-                configManager.GetInstanceInfo(this).Reload();
-            }
-
-            public void Reset(){
-                configManager.GetInstanceInfo(this).Reset();
-            }
-
-            // Construction methods
-
-            public T ConstructWithDefaults<T>() where T : BaseConfig{
-                return ConstructWithDefaults(configManager) as T;
-            }
-
-            protected abstract BaseConfig ConstructWithDefaults(ConfigManager configManager);
-
-            // Utility methods
-
-            protected void UpdatePropertyWithEvent<T>(ref T field, T value, EventHandler eventHandler){
-                if (!EqualityComparer<T>.Default.Equals(field, value)){
-                    field = value;
-                    eventHandler?.Invoke(this, EventArgs.Empty);
-                }
-            }
-
-            protected void UpdatePropertyWithRestartRequest<T>(ref T field, T value){
-                if (!EqualityComparer<T>.Default.Equals(field, value)){
-                    field = value;
-                    configManager.TriggerProgramRestartRequested();
-                }
-            }
-        }
     }
 }

Configuration/Instance/PluginConfigInstance.cs

@@ -1,69 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-
-namespace TweetDuck.Configuration.Instance{
-    class PluginConfigInstance : IConfigInstance<PluginConfig>{
-        public PluginConfig Instance { get; }
-
-        private readonly string filename;
-
-        public PluginConfigInstance(string filename, PluginConfig instance){
-            this.filename = filename;
-            this.Instance = instance;
-        }
-
-        public void Load(){
-            try{
-                using(StreamReader reader = new StreamReader(new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read), Encoding.UTF8)){
-                    string line = reader.ReadLine();
-
-                    if (line == "#Disabled"){
-                        HashSet<string> newDisabled = new HashSet<string>();
-
-                        while((line = reader.ReadLine()) != null){
-                            newDisabled.Add(line);
-                        }
-
-                        Instance.ReloadSilently(newDisabled);
-                    }
-                }
-            }catch(FileNotFoundException){
-            }catch(DirectoryNotFoundException){
-            }catch(Exception e){
-                Program.Reporter.HandleException("Plugin Configuration Error", "Could not read the plugin configuration file. If you continue, the list of disabled plugins will be reset to default.", true, e);
-            }
-        }
-
-        public void Save(){
-            try{
-                using(StreamWriter writer = new StreamWriter(new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.None), Encoding.UTF8)){
-                    writer.WriteLine("#Disabled");
-
-                    foreach(string identifier in Instance.DisabledPlugins){
-                        writer.WriteLine(identifier);
-                    }
-                }
-            }catch(Exception e){
-                Program.Reporter.HandleException("Plugin Configuration Error", "Could not save the plugin configuration file.", true, e);
-            }
-        }
-
-        public void Reload(){
-            Load();
-        }
-
-        public void Reset(){
-            try{
-                File.Delete(filename);
-                Instance.ReloadSilently(Instance.ConstructWithDefaults<PluginConfig>().DisabledPlugins);
-            }catch(Exception e){
-                Program.Reporter.HandleException("Plugin Configuration Error", "Could not delete the plugin configuration file.", true, e);
-                return;
-            }
-            
-            Reload();
-        }
-    }
-}

Configuration/PluginConfig.cs

@@ -1,21 +1,42 @@
 using System;
 using System.Collections.Generic;
-using TweetDuck.Plugins;
-using TweetDuck.Plugins.Events;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Features.Plugins.Config;
+using TweetLib.Core.Features.Plugins.Events;
+using TweetLib.Core.Systems.Configuration;
 
 namespace TweetDuck.Configuration{
-    sealed class PluginConfig : ConfigManager.BaseConfig, IPluginConfig{
+    sealed class PluginConfig : BaseConfig, IPluginConfig{
         private static readonly string[] DefaultDisabled = {
             "official/clear-columns",
             "official/reply-account"
         };
 
-        // CONFIGURATION
+        // CONFIGURATION DATA
 
-        public IEnumerable<string> DisabledPlugins => disabled;
+        private readonly HashSet<string> disabled = new HashSet<string>(DefaultDisabled);
+
+        // EVENTS
         
         public event EventHandler<PluginChangedStateEventArgs> PluginChangedState;
         
+        // END OF CONFIG
+
+        public PluginConfig(IConfigManager configManager) : base(configManager){}
+
+        protected override BaseConfig ConstructWithDefaults(IConfigManager configManager){
+            return new PluginConfig(configManager);
+        }
+
+        // INTERFACE IMPLEMENTATION
+
+        IEnumerable<string> IPluginConfig.DisabledPlugins => disabled;
+
+        void IPluginConfig.Reset(IEnumerable<string> newDisabledPlugins){
+            disabled.Clear();
+            disabled.UnionWith(newDisabledPlugins);
+        }
+
         public void SetEnabled(Plugin plugin, bool enabled){
             if ((enabled && disabled.Remove(plugin.Identifier)) || (!enabled && disabled.Add(plugin.Identifier))){
                 PluginChangedState?.Invoke(this, new PluginChangedStateEventArgs(plugin, enabled));
@@ -26,20 +47,5 @@ namespace TweetDuck.Configuration{
         public bool IsEnabled(Plugin plugin){
             return !disabled.Contains(plugin.Identifier);
         }
-
-        public void ReloadSilently(IEnumerable<string> newDisabled){
-            disabled.Clear();
-            disabled.UnionWith(newDisabled);
-        }
-
-        private readonly HashSet<string> disabled = new HashSet<string>(DefaultDisabled);
-        
-        // END OF CONFIG
-
-        public PluginConfig(ConfigManager configManager) : base(configManager){}
-
-        protected override ConfigManager.BaseConfig ConstructWithDefaults(ConfigManager configManager){
-            return new PluginConfig(configManager);
-        }
     }
 }

Configuration/SystemConfig.cs

@@ -1,5 +1,7 @@
-namespace TweetDuck.Configuration{
-    sealed class SystemConfig : ConfigManager.BaseConfig{
+using TweetLib.Core.Systems.Configuration;
+
+namespace TweetDuck.Configuration{
+    sealed class SystemConfig : BaseConfig{
 
         // CONFIGURATION DATA
         
@@ -17,9 +19,9 @@
         
         // END OF CONFIG
 
-        public SystemConfig(ConfigManager configManager) : base(configManager){}
+        public SystemConfig(IConfigManager configManager) : base(configManager){}
 
-        protected override ConfigManager.BaseConfig ConstructWithDefaults(ConfigManager configManager){
+        protected override BaseConfig ConstructWithDefaults(IConfigManager configManager){
             return new SystemConfig(configManager);
         }
     }

Configuration/UserConfig.cs

@@ -1,13 +1,14 @@
 using System;
 using System.Drawing;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Notification;
-using TweetDuck.Core.Other;
-using TweetDuck.Core.Utils;
-using TweetDuck.Data;
+using TweetDuck.Browser;
+using TweetDuck.Browser.Data;
+using TweetDuck.Controls;
+using TweetLib.Core.Features.Notifications;
+using TweetLib.Core.Features.Twitter;
+using TweetLib.Core.Systems.Configuration;
 
 namespace TweetDuck.Configuration{
-    sealed class UserConfig : ConfigManager.BaseConfig{
+    sealed class UserConfig : BaseConfig{
         
         // CONFIGURATION DATA
 
@@ -18,6 +19,7 @@ namespace TweetDuck.Configuration{
         public Size PluginsWindowSize    { get; set; } = Size.Empty;
 
         public bool ExpandLinksOnHover        { get; set; } = true;
+        public bool FocusDmInput              { get; set; } = true;
         public bool OpenSearchInFirstColumn   { get; set; } = true;
         public bool KeepLikeFollowDialogsOpen { get; set; } = true;
         public bool BestImageQuality          { get; set; } = true;
@@ -28,16 +30,20 @@ namespace TweetDuck.Configuration{
         private string _customCefArgs       = null;
 
         public string BrowserPath            { get; set; } = null;
+        public string BrowserPathArgs        { get; set; } = null;
         public bool IgnoreTrackingUrlWarning { get; set; } = false;
         public string SearchEngineUrl        { get; set; } = null;
         private int _zoomLevel                             = 100;
         
+        public string VideoPlayerPath     { get; set; } = null;
+        public string VideoPlayerPathArgs { get; set; } = null;
         public int VideoPlayerVolume      { get; set; } = 50;
         
         public bool EnableSpellCheck { get; set; } = false;
         private string _spellCheckLanguage         = "en-US";
 
         public string TranslationTarget { get; set; } = "en";
+        public int  CalendarFirstDay    { get; set; } = -1;
         
         private TrayIcon.Behavior _trayBehavior       = TrayIcon.Behavior.Disabled;
         public bool EnableTrayHighlight { get; set; } = true;
@@ -55,12 +61,13 @@ namespace TweetDuck.Configuration{
         public bool NotificationTimerCountDown { get; set; } = false;
         public int NotificationDurationValue   { get; set; } = 25;
 
-        public TweetNotification.Position NotificationPosition { get; set; } = TweetNotification.Position.TopRight;
+        public DesktopNotification.Position NotificationPosition { get; set; } = DesktopNotification.Position.TopRight;
         public Point CustomNotificationPosition                  { get; set; } = ControlExtensions.InvisibleLocation;
         public int NotificationDisplay                           { get; set; } = 0;
         public int NotificationEdgeDistance                      { get; set; } = 8;
+        public int NotificationWindowOpacity                     { get; set; } = 100;
 
-        public TweetNotification.Size NotificationSize { get; set; } = TweetNotification.Size.Auto;
+        public DesktopNotification.Size NotificationSize { get; set; } = DesktopNotification.Size.Auto;
         public Size CustomNotificationSize               { get; set; } = Size.Empty;
         public int NotificationScrollSpeed               { get; set; } = 100;
         
@@ -72,13 +79,15 @@ namespace TweetDuck.Configuration{
         public string CustomBrowserCSS      { get; set; } = null;
         public string CustomNotificationCSS { get; set; } = null;
 
+        public bool DevToolsWindowOnTop     { get; set; } = true;
+        
         // SPECIAL PROPERTIES
 
         public bool IsCustomNotificationPositionSet => CustomNotificationPosition != ControlExtensions.InvisibleLocation;
         public bool IsCustomNotificationSizeSet => CustomNotificationSize != Size.Empty;
         public bool IsCustomSoundNotificationSet => NotificationSoundPath != string.Empty;
 
-        public TwitterUtils.ImageQuality TwitterImageQuality => BestImageQuality ? TwitterUtils.ImageQuality.Orig : TwitterUtils.ImageQuality.Default;
+        public ImageQuality TwitterImageQuality => BestImageQuality ? ImageQuality.Best : ImageQuality.Default;
         
         public string NotificationSoundPath{
             get => _notificationSoundPath ?? string.Empty;
@@ -134,9 +143,9 @@ namespace TweetDuck.Configuration{
 
         // END OF CONFIG
         
-        public UserConfig(ConfigManager configManager) : base(configManager){}
+        public UserConfig(IConfigManager configManager) : base(configManager){}
 
-        protected override ConfigManager.BaseConfig ConstructWithDefaults(ConfigManager configManager){
+        protected override BaseConfig ConstructWithDefaults(IConfigManager configManager){
             return new UserConfig(configManager);
         }
     }

Controls/ControlExtensions.cs

@@ -3,7 +3,7 @@ using System.Drawing;
 using System.Linq;
 using System.Windows.Forms;
 
-namespace TweetDuck.Core.Controls{
+namespace TweetDuck.Controls{
     static class ControlExtensions{
         public static readonly Point InvisibleLocation = new Point(-32000, -32000);
 
@@ -21,9 +21,8 @@ namespace TweetDuck.Core.Controls{
         }
 
         public static float GetDPIScale(this Control control){
-            using(Graphics graphics = control.CreateGraphics()){
-                return graphics.DpiY/96F;
-            }
+            using Graphics graphics = control.CreateGraphics();
+            return graphics.DpiY / 96F;
         }
 
         public static bool IsFullyOutsideView(this Form form){
@@ -31,17 +30,17 @@ namespace TweetDuck.Core.Controls{
         }
 
         public static void MoveToCenter(this Form targetForm, Form parentForm){
-            targetForm.Location = new Point(parentForm.Location.X+parentForm.Width/2-targetForm.Width/2, parentForm.Location.Y+parentForm.Height/2-targetForm.Height/2);
+            targetForm.Location = new Point(parentForm.Location.X + (parentForm.Width / 2) - (targetForm.Width / 2), parentForm.Location.Y + (parentForm.Height / 2) - (targetForm.Height / 2));
         }
 
         public static void SetValueInstant(this ProgressBar bar, int value){
             if (value == bar.Maximum){
                 bar.Value = value;
-                bar.Value = value-1;
+                bar.Value = value - 1;
                 bar.Value = value;
             }
             else{
-                bar.Value = value+1;
+                bar.Value = value + 1;
                 bar.Value = value;
             }
         }
@@ -60,10 +59,11 @@ namespace TweetDuck.Core.Controls{
 
         public static bool AlignValueToTick(this TrackBar trackBar){
             if (trackBar.Value % trackBar.SmallChange != 0){
-                trackBar.Value = trackBar.SmallChange*(int)Math.Floor(((double)trackBar.Value/trackBar.SmallChange)+0.5);
+                trackBar.Value = trackBar.SmallChange * (int)Math.Floor(((double)trackBar.Value / trackBar.SmallChange) + 0.5);
                 return false;
             }
-            else return true;
+
+            return true;
         }
 
         public static void EnableMultilineShortcuts(this TextBox textBox){

Controls/FlatButton.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Windows.Forms;
 
-namespace TweetDuck.Core.Controls{
+namespace TweetDuck.Controls{
     sealed class FlatButton : Button{
         protected override bool ShowFocusCues => false;
 

Controls/FlatProgressBar.cs

@@ -2,7 +2,7 @@
 using System.Drawing;
 using System.Windows.Forms;
 
-namespace TweetDuck.Core.Controls{
+namespace TweetDuck.Controls{
     sealed class FlatProgressBar : ProgressBar{
         private readonly SolidBrush brush;
 
@@ -23,7 +23,7 @@ namespace TweetDuck.Core.Controls{
             }
 
             Rectangle rect = e.ClipRectangle;
-            rect.Width = (int)(rect.Width*((double)Value/Maximum));
+            rect.Width = (int)(rect.Width * ((double)Value / Maximum));
             e.Graphics.FillRectangle(brush, rect);
         }
 

Controls/FlowLayoutPanelNoHScroll.cs

@@ -1,13 +1,8 @@
 using System.Windows.Forms;
-using TweetDuck.Core.Utils;
-
-namespace TweetDuck.Plugins.Controls{
-    sealed class PluginListFlowLayout : FlowLayoutPanel{
-        public PluginListFlowLayout(){
-            FlowDirection = FlowDirection.TopDown;
-            WrapContents = false;
-        }
+using TweetDuck.Utils;
 
+namespace TweetDuck.Controls{
+    sealed class FlowLayoutPanelNoHScroll : FlowLayoutPanel{
         protected override void WndProc(ref Message m){
             if (m.Msg == 0x85){ // WM_NCPAINT
                 NativeMethods.ShowScrollBar(Handle, NativeMethods.SB_HORZ, false); // basically fuck the horizontal scrollbar very much

Controls/LabelVertical.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+
+namespace TweetDuck.Controls{
+    sealed class LabelVertical : Label{
+        public int LineHeight { get; set; }
+
+        protected override void OnPaint(PaintEventArgs e){
+            int y = (int)Math.Floor((ClientRectangle.Height - Text.Length * LineHeight) / 2F) - 1;
+            using Brush brush = new SolidBrush(ForeColor);
+
+            foreach(char chr in Text){
+                string str = chr.ToString();
+                float x = (ClientRectangle.Width - e.Graphics.MeasureString(str, Font).Width) / 2F;
+
+                e.Graphics.DrawString(str, Font, brush, x, y);
+                y += LineHeight;
+            }
+        }
+    }
+}

Controls/NumericUpDownEx.cs

@@ -1,7 +1,7 @@
 using System.ComponentModel;
 using System.Windows.Forms;
 
-namespace TweetDuck.Core.Controls{
+namespace TweetDuck.Controls{
     sealed class NumericUpDownEx : NumericUpDown{
         public string TextSuffix { get; set ; }
 

Core/Controls/LabelVertical.cs

@@ -1,23 +0,0 @@
-using System;
-using System.Drawing;
-using System.Windows.Forms;
-
-namespace TweetDuck.Core.Controls{
-    sealed class LabelVertical : Label{
-        public int LineHeight { get; set; }
-
-        protected override void OnPaint(PaintEventArgs e){
-            int y = (int)Math.Floor((ClientRectangle.Height-Text.Length*LineHeight)/2F)-1;
-
-            using(Brush brush = new SolidBrush(ForeColor)){
-                foreach(char chr in Text){
-                    string str = chr.ToString();
-                    float x = (ClientRectangle.Width-e.Graphics.MeasureString(str, Font).Width)/2F;
-
-                    e.Graphics.DrawString(str, Font, brush, x, y);
-                    y += LineHeight;
-                }
-            }
-        }
-    }
-}

Core/Handling/RequestHandlerBrowser.cs

@@ -1,65 +0,0 @@
-using System.Collections.Specialized;
-using CefSharp;
-using TweetDuck.Core.Handling.Filters;
-using TweetDuck.Core.Utils;
-
-namespace TweetDuck.Core.Handling{
-    sealed class RequestHandlerBrowser : RequestHandlerBase{
-        private const string UrlVendorResource = "/dist/vendor";
-        private const string UrlLoadingSpinner = "/backgrounds/spinner_blue";
-
-        public string BlockNextUserNavUrl { get; set; }
-
-        public RequestHandlerBrowser() : base(true){}
-
-        public override CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback){
-            if (request.ResourceType == ResourceType.MainFrame){
-                if (request.Url.EndsWith("//twitter.com/")){
-                    request.Url = TwitterUtils.TweetDeckURL; // redirect plain twitter.com requests, fixes bugs with login 2FA
-                }
-            }
-            else if (request.ResourceType == ResourceType.Script){
-                string url = request.Url;
-
-                if (url.Contains("analytics.")){
-                    callback.Dispose();
-                    return CefReturnValue.Cancel;
-                }
-                else if (url.Contains(UrlVendorResource)){
-                    NameValueCollection headers = request.Headers;
-                    headers["Accept-Encoding"] = "identity";
-                    request.Headers = headers;
-                }
-            }
-
-            return base.OnBeforeResourceLoad(browserControl, browser, frame, request, callback);
-        }
-
-        public override bool OnBeforeBrowse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, bool userGesture, bool isRedirect){
-            if (userGesture && request.TransitionType == TransitionType.LinkClicked){
-                bool block = request.Url == BlockNextUserNavUrl;
-                BlockNextUserNavUrl = string.Empty;
-                return block;
-            }
-
-            return base.OnBeforeBrowse(browserControl, browser, frame, request, userGesture, isRedirect);
-        }
-
-        public override bool OnResourceResponse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response){
-            if (request.ResourceType == ResourceType.Image && request.Url.Contains(UrlLoadingSpinner)){
-                request.Url = TwitterUtils.LoadingSpinner.Url;
-                return true;
-            }
-
-            return base.OnResourceResponse(browserControl, browser, frame, request, response);
-        }
-
-        public override IResponseFilter GetResourceResponseFilter(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response){
-            if (request.ResourceType == ResourceType.Script && request.Url.Contains(UrlVendorResource) && int.TryParse(response.ResponseHeaders["Content-Length"], out int totalBytes)){
-                return new ResponseFilterVendor(totalBytes);
-            }
-
-            return base.GetResourceResponseFilter(browserControl, browser, frame, request, response);
-        }
-    }
-}

Core/Handling/ResourceHandlerFactory.cs

@@ -1,43 +0,0 @@
-using System;
-using System.Collections.Concurrent;
-using CefSharp;
-using TweetDuck.Data;
-
-namespace TweetDuck.Core.Handling{
-    sealed class ResourceHandlerFactory : IResourceHandlerFactory{
-        public bool HasHandlers => !handlers.IsEmpty;
-
-        private readonly ConcurrentDictionary<string, IResourceHandler> handlers = new ConcurrentDictionary<string, IResourceHandler>(StringComparer.OrdinalIgnoreCase);
-
-        public IResourceHandler GetResourceHandler(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request){
-            try{
-                return handlers.TryGetValue(request.Url, out IResourceHandler handler) ? handler : null;
-            }finally{
-                request.Dispose();
-            }
-        }
-
-        // registration
-
-        public bool RegisterHandler(string url, IResourceHandler handler){
-            if (Uri.TryCreate(url, UriKind.Absolute, out Uri uri)){
-                handlers.AddOrUpdate(uri.AbsoluteUri, handler, (key, prev) => handler);
-                return true;
-            }
-
-            return false;
-        }
-
-        public bool RegisterHandler(ResourceLink link){
-            return RegisterHandler(link.Url, link.Handler);
-        }
-
-        public bool UnregisterHandler(string url){
-            return handlers.TryRemove(url, out IResourceHandler _);
-        }
-
-        public bool UnregisterHandler(ResourceLink link){
-            return UnregisterHandler(link.Url);
-        }
-    }
-}

Core/Notification/SoundNotification.cs

@@ -1,50 +0,0 @@
-using System.Drawing;
-using System.IO;
-using System.Windows.Forms;
-using CefSharp;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Other;
-using TweetDuck.Core.Other.Settings;
-
-namespace TweetDuck.Core.Notification{
-    static class SoundNotification{
-        public const string SupportedFormats = "*.wav;*.ogg;*.mp3;*.flac;*.opus;*.weba;*.webm";
-        
-        public static IResourceHandler CreateFileHandler(string path){
-            string mimeType;
-
-            switch(Path.GetExtension(path)){
-                case ".weba":
-                case ".webm": mimeType = "audio/webm"; break;
-                case ".wav": mimeType = "audio/wav"; break;
-                case ".ogg": mimeType = "audio/ogg"; break;
-                case ".mp3": mimeType = "audio/mp3"; break;
-                case ".flac": mimeType = "audio/flac"; break;
-                case ".opus": mimeType = "audio/ogg; codecs=opus"; break;
-                default: mimeType = null; break;
-            }
-
-            try{
-                return ResourceHandler.FromFilePath(path, mimeType);
-            }catch{
-                FormBrowser browser = FormManager.TryFind<FormBrowser>();
-
-                browser?.InvokeAsyncSafe(() => {
-                    using(FormMessage form = new FormMessage("Sound Notification Error", "Could not find custom notification sound file:\n"+path, MessageBoxIcon.Error)){
-                        form.AddButton(FormMessage.Ignore, ControlType.Cancel | ControlType.Focused);
-                        
-                        Button btnViewOptions = form.AddButton("View Options");
-                        btnViewOptions.Width += 16;
-                        btnViewOptions.Location = new Point(btnViewOptions.Location.X-16, btnViewOptions.Location.Y);
-
-                        if (form.ShowDialog() == DialogResult.OK && form.ClickedButton == btnViewOptions){
-                            browser.OpenSettings(typeof(TabSettingsSounds));
-                        }
-                    }
-                });
-                
-                return null;
-            }
-        }
-    }
-}

Core/Other/Settings/BaseTabSettings.cs

@@ -1,36 +0,0 @@
-using System.Collections.Generic;
-using System.Windows.Forms;
-using TweetDuck.Configuration;
-
-namespace TweetDuck.Core.Other.Settings{
-    class BaseTabSettings : UserControl{
-        protected static UserConfig Config => Program.Config.User;
-        protected static SystemConfig SysConfig => Program.Config.System;
-
-        public IEnumerable<Control> InteractiveControls{
-            get{
-                IEnumerable<Control> FindInteractiveControls(Control parent){
-                    foreach(Control control in parent.Controls){
-                        if (control is Panel subPanel){
-                            foreach(Control subControl in FindInteractiveControls(subPanel)){
-                                yield return subControl;
-                            }
-                        }
-                        else{
-                            yield return control;
-                        }
-                    }
-                }
-
-                return FindInteractiveControls(this);
-            }
-        }
-
-        protected BaseTabSettings(){
-            Padding = new Padding(6);
-        }
-
-        public virtual void OnReady(){}
-        public virtual void OnClosing(){}
-    }
-}

Core/Utils/TwitterUtils.cs

@@ -1,186 +0,0 @@
-using System;
-using CefSharp;
-using System.Drawing;
-using System.IO;
-using System.Text.RegularExpressions;
-using System.Windows.Forms;
-using TweetDuck.Core.Management;
-using TweetDuck.Core.Other;
-using TweetDuck.Data;
-using System.Linq;
-using System.Threading.Tasks;
-using Cookie = CefSharp.Cookie;
-
-namespace TweetDuck.Core.Utils{
-    static class TwitterUtils{
-        public const string TweetDeckURL = "https://tweetdeck.twitter.com";
-
-        public static readonly Color BackgroundColor = Color.FromArgb(28, 99, 153);
-        public const string BackgroundColorOverride = "setTimeout(function f(){let h=document.head;if(!h){setTimeout(f,5);return;}let e=document.createElement('style');e.innerHTML='body,body::before{background:#1c6399!important;margin:0}';h.appendChild(e);},1)";
-
-        public static readonly ResourceLink LoadingSpinner = new ResourceLink("https://ton.twimg.com/tduck/spinner", ResourceHandler.FromByteArray(Properties.Resources.spinner, "image/apng"));
-        
-        private static readonly Lazy<Regex> RegexAccountLazy = new Lazy<Regex>(() => new Regex(@"^https?://twitter\.com/(?!signup$|tos$|privacy$|search$|search-)([^/?]+)/?$", RegexOptions.Compiled), false);
-        public static Regex RegexAccount => RegexAccountLazy.Value;
-
-        public static readonly string[] DictionaryWords = {
-            "tweetdeck", "TweetDeck", "tweetduck", "TweetDuck", "TD"
-        };
-
-        public static readonly string[] ValidImageExtensions = {
-            ".jpg", ".jpeg", ".png", ".gif"
-        };
-
-        public enum ImageQuality{
-            Default, Orig
-        }
-
-        public static bool IsTweetDeckWebsite(IFrame frame){
-            return frame.Url.Contains("//tweetdeck.twitter.com/");
-        }
-
-        public static bool IsTwitterWebsite(IFrame frame){
-            return frame.Url.Contains("//twitter.com/");
-        }
-
-        public static bool IsTwitterLogin2FactorWebsite(IFrame frame){
-            return frame.Url.Contains("//twitter.com/account/login_verification");
-        }
-
-        private static string ExtractMediaBaseLink(string url){
-            int slash = url.LastIndexOf('/');
-            return slash == -1 ? url : StringUtils.ExtractBefore(url, ':', slash);
-        }
-
-        public static string GetMediaLink(string url, ImageQuality quality){
-            if (quality == ImageQuality.Orig){
-                string result = ExtractMediaBaseLink(url);
-
-                if (url.Contains("//ton.twitter.com/") && url.Contains("/ton/data/dm/")){
-                    result += ":large";
-                }
-                else if (result != url || url.Contains("//pbs.twimg.com/media/")){
-                    result += ":orig";
-                }
-
-                return result;
-            }
-            else{
-                return url;
-            }
-        }
-
-        public static string GetImageFileName(string url){
-            return BrowserUtils.GetFileNameFromUrl(ExtractMediaBaseLink(url));
-        }
-
-        public static void ViewImage(string url, ImageQuality quality){
-            void ViewImageInternal(string path){
-                string ext = Path.GetExtension(path);
-
-                if (ValidImageExtensions.Contains(ext)){
-                    WindowsUtils.OpenAssociatedProgram(path);
-                }
-                else{
-                    FormMessage.Error("Image Download", "Invalid file extension "+ext, FormMessage.OK);
-                }
-            }
-
-            string file = Path.Combine(BrowserCache.CacheFolder, GetImageFileName(url) ?? Path.GetRandomFileName());
-            
-            if (WindowsUtils.FileExistsAndNotEmpty(file)){
-                ViewImageInternal(file);
-            }
-            else{
-                DownloadFileAuth(GetMediaLink(url, quality), file, () => {
-                    ViewImageInternal(file);
-                }, ex => {
-                    FormMessage.Error("Image Download", "An error occurred while downloading the image: "+ex.Message, FormMessage.OK);
-                });
-            }
-        }
-        
-        public static void DownloadImage(string url, string username, ImageQuality quality){
-            DownloadImages(new string[]{ url }, username, quality);
-        }
-
-        public static void DownloadImages(string[] urls, string username, ImageQuality quality){
-            if (urls.Length == 0){
-                return;
-            }
-
-            string firstImageLink = GetMediaLink(urls[0], quality);
-            int qualityIndex = firstImageLink.IndexOf(':', firstImageLink.LastIndexOf('/'));
-
-            string filename = GetImageFileName(firstImageLink);
-            string ext = Path.GetExtension(filename); // includes dot
-            
-            using(SaveFileDialog dialog = new SaveFileDialog{
-                AutoUpgradeEnabled = true,
-                OverwritePrompt = urls.Length == 1,
-                Title = "Save Image",
-                FileName = qualityIndex == -1 ? filename : $"{username} {Path.ChangeExtension(filename, null)} {firstImageLink.Substring(qualityIndex+1)}".Trim()+ext,
-                Filter = (urls.Length == 1 ? "Image" : "Images")+(string.IsNullOrEmpty(ext) ? " (unknown)|*.*" : $" (*{ext})|*{ext}")
-            }){
-                if (dialog.ShowDialog() == DialogResult.OK){
-                    void OnFailure(Exception ex){
-                        FormMessage.Error("Image Download", "An error occurred while downloading the image: "+ex.Message, FormMessage.OK);
-                    }
-
-                    if (urls.Length == 1){
-                        DownloadFileAuth(firstImageLink, dialog.FileName, null, OnFailure);
-                    }
-                    else{
-                        string pathBase = Path.ChangeExtension(dialog.FileName, null);
-                        string pathExt = Path.GetExtension(dialog.FileName);
-
-                        for(int index = 0; index < urls.Length; index++){
-                            DownloadFileAuth(GetMediaLink(urls[index], quality), $"{pathBase} {index+1}{pathExt}", null, OnFailure);
-                        }
-                    }
-                }
-            }
-        }
-
-        public static void DownloadVideo(string url, string username){
-            string filename = BrowserUtils.GetFileNameFromUrl(url);
-            string ext = Path.GetExtension(filename);
-
-            using(SaveFileDialog dialog = new SaveFileDialog{
-                AutoUpgradeEnabled = true,
-                OverwritePrompt = true,
-                Title = "Save Video",
-                FileName = string.IsNullOrEmpty(username) ? filename : $"{username} {filename}".TrimStart(),
-                Filter = "Video"+(string.IsNullOrEmpty(ext) ? " (unknown)|*.*" : $" (*{ext})|*{ext}")
-            }){
-                if (dialog.ShowDialog() == DialogResult.OK){
-                    DownloadFileAuth(url, dialog.FileName, null, ex => {
-                        FormMessage.Error("Video Download", "An error occurred while downloading the video: "+ex.Message, FormMessage.OK);
-                    });
-                }
-            }
-        }
-
-        private static void DownloadFileAuth(string url, string target, Action onSuccess, Action<Exception> onFailure){
-            const string AuthCookieName = "auth_token";
-
-            TaskScheduler scheduler = TaskScheduler.FromCurrentSynchronizationContext();
-
-            using(ICookieManager cookies = Cef.GetGlobalCookieManager()){
-                cookies.VisitUrlCookiesAsync(url, true).ContinueWith(task => {
-                    string cookieStr = null;
-
-                    if (task.Status == TaskStatus.RanToCompletion){
-                        Cookie found = task.Result?.Find(cookie => cookie.Name == AuthCookieName); // the list may be null
-
-                        if (found != null){
-                            cookieStr = $"{found.Name}={found.Value}";
-                        }
-                    }
-
-                    BrowserUtils.DownloadFileAsync(url, target, cookieStr, onSuccess, onFailure);
-                }, scheduler);
-            }
-        }
-    }
-}

Core/Utils/WindowsUtils.cs

@@ -1,217 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Diagnostics;
-using System.IO;
-using System.Net;
-using System.Runtime.InteropServices;
-using System.Text.RegularExpressions;
-using System.Threading;
-using System.Windows.Forms;
-using Microsoft.Win32;
-
-namespace TweetDuck.Core.Utils{
-    static class WindowsUtils{
-        private static readonly Lazy<Regex> RegexStripHtmlStyles = new Lazy<Regex>(() => new Regex(@"\s?(?:style|class)="".*?"""), false);
-        private static readonly Lazy<Regex> RegexOffsetClipboardHtml = new Lazy<Regex>(() => new Regex(@"(?<=EndHTML:|EndFragment:)(\d+)"), false);
-
-        private static readonly bool IsWindows8OrNewer;
-        private static bool HasMicrosoftBeenBroughtTo2008Yet;
-
-        public static int CurrentProcessID { get; }
-        public static bool ShouldAvoidToolWindow { get; }
-        public static bool IsAeroEnabled => IsWindows8OrNewer || (NativeMethods.DwmIsCompositionEnabled(out bool isCompositionEnabled) == 0 && isCompositionEnabled);
-
-        static WindowsUtils(){
-            using(Process me = Process.GetCurrentProcess()){
-                CurrentProcessID = me.Id;
-            }
-
-            Version ver = Environment.OSVersion.Version;
-            IsWindows8OrNewer = ver.Major == 6 && ver.Minor == 2; // windows 8/10
-
-            ShouldAvoidToolWindow = IsWindows8OrNewer;
-        }
-        
-        public static void EnsureTLS12(){
-            if (!HasMicrosoftBeenBroughtTo2008Yet){
-                ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12;
-                ServicePointManager.SecurityProtocol &= ~(SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11);
-                HasMicrosoftBeenBroughtTo2008Yet = true;
-            }
-        }
-
-        public static void CreateDirectoryForFile(string file){
-            string dir = Path.GetDirectoryName(file);
-
-            if (dir == null){
-                throw new ArgumentException("Invalid file path: "+file);
-            }
-            else if (dir.Length > 0){
-                Directory.CreateDirectory(dir);
-            }
-        }
-
-        public static bool CheckFolderWritePermission(string path){
-            string testFile = Path.Combine(path, ".test");
-
-            try{
-                Directory.CreateDirectory(path);
-
-                using(File.Create(testFile)){}
-                File.Delete(testFile);
-                return true;
-            }catch{
-                return false;
-            }
-        }
-
-        public static bool FileExistsAndNotEmpty(string path){
-            try{
-                return new FileInfo(path).Length > 0;
-            }catch{
-                return false;
-            }
-        }
-
-        public static bool OpenAssociatedProgram(string file, string arguments = "", bool runElevated = false){
-            try{
-                using(Process.Start(new ProcessStartInfo{
-                    FileName = file,
-                    Arguments = arguments,
-                    Verb = runElevated ? "runas" : string.Empty,
-                    ErrorDialog = true
-                })){
-                    return true;
-                }
-            }catch(Win32Exception e) when (e.NativeErrorCode == 0x000004C7){ // operation canceled by the user
-                return false;
-            }catch(Exception e){
-                Program.Reporter.HandleException("Error Opening Program", "Could not open the associated program for "+file, true, e);
-                return false;
-            }
-        }
-
-        public static bool TrySleepUntil(Func<bool> test, int timeoutMillis, int timeStepMillis){
-            for(int waited = 0; waited < timeoutMillis; waited += timeStepMillis){
-                if (test()){
-                    return true;
-                }
-
-                Thread.Sleep(timeStepMillis);
-            }
-
-            return false;
-        }
-
-        public static void TryDeleteFolderWhenAble(string path, int timeout){
-            new Thread(() => {
-                TrySleepUntil(() => {
-                    try{
-                        Directory.Delete(path, true);
-                        return true;
-                    }catch(DirectoryNotFoundException){
-                        return true;
-                    }catch{
-                        return false;
-                    }
-                }, timeout, 500);
-            }).Start();
-        }
-
-        public static void ClipboardStripHtmlStyles(){
-            if (!Clipboard.ContainsText(TextDataFormat.Html) || !Clipboard.ContainsText(TextDataFormat.UnicodeText)){
-                return;
-            }
-
-            string originalText = Clipboard.GetText(TextDataFormat.UnicodeText);
-            string originalHtml = Clipboard.GetText(TextDataFormat.Html);
-
-            string updatedHtml = RegexStripHtmlStyles.Value.Replace(originalHtml, string.Empty);
-
-            int removed = originalHtml.Length-updatedHtml.Length;
-            updatedHtml = RegexOffsetClipboardHtml.Value.Replace(updatedHtml, match => (int.Parse(match.Value)-removed).ToString().PadLeft(match.Value.Length, '0'));
-            
-            DataObject obj = new DataObject();
-            obj.SetText(originalText, TextDataFormat.UnicodeText);
-            obj.SetText(updatedHtml, TextDataFormat.Html);
-            SetClipboardData(obj);
-        }
-
-        public static void SetClipboard(string text, TextDataFormat format){
-            if (string.IsNullOrEmpty(text)){
-                return;
-            }
-
-            DataObject obj = new DataObject();
-            obj.SetText(text, format);
-            SetClipboardData(obj);
-        }
-
-        private static void SetClipboardData(DataObject obj){
-            try{
-                Clipboard.SetDataObject(obj);
-            }catch(ExternalException e){
-                Program.Reporter.HandleException("Clipboard Error", "TweetDuck could not access the clipboard as it is currently used by another process.", true, e);
-            }
-        }
-
-        public static IEnumerable<Browser> FindInstalledBrowsers(){
-            IEnumerable<Browser> ReadBrowsersFromKey(RegistryHive hive){
-                using(RegistryKey root = RegistryKey.OpenBaseKey(hive, RegistryView.Default))
-                using(RegistryKey browserList = root.OpenSubKey(@"SOFTWARE\Clients\StartMenuInternet", false)){
-                    if (browserList == null){
-                        yield break;
-                    }
-
-                    foreach(string sub in browserList.GetSubKeyNames()){
-                        using(RegistryKey browserKey = browserList.OpenSubKey(sub, false))
-                        using(RegistryKey shellKey = browserKey?.OpenSubKey(@"shell\open\command")){
-                            if (shellKey == null){
-                                continue;
-                            }
-
-                            string browserName = browserKey.GetValue(null) as string;
-                            string browserPath = shellKey.GetValue(null) as string;
-
-                            if (string.IsNullOrEmpty(browserName) || string.IsNullOrEmpty(browserPath)){
-                                continue;
-                            }
-
-                            if (browserPath[0] == '"' && browserPath[browserPath.Length-1] == '"'){
-                                browserPath = browserPath.Substring(1, browserPath.Length-2);
-                            }
-
-                            yield return new Browser(browserName, browserPath);
-                        }
-                    }
-                }
-            }
-
-            HashSet<Browser> browsers = new HashSet<Browser>();
-            
-            try{
-                browsers.UnionWith(ReadBrowsersFromKey(RegistryHive.CurrentUser));
-                browsers.UnionWith(ReadBrowsersFromKey(RegistryHive.LocalMachine));
-            }catch{
-                // oops I guess
-            }
-
-            return browsers;
-        }
-
-        public sealed class Browser{
-            public string Name { get; }
-            public string Path { get; }
-
-            public Browser(string name, string path){
-                this.Name = name;
-                this.Path = path;
-            }
-
-            public override int GetHashCode() => Name.GetHashCode();
-            public override bool Equals(object obj) => obj is Browser other && Name == other.Name;
-            public override string ToString() => Name;
-        }
-    }
-}

Data/Serialization/ITypeConverter.cs

@@ -1,8 +0,0 @@
-using System;
-
-namespace TweetDuck.Data.Serialization{
-    interface ITypeConverter{
-        bool TryWriteType(Type type, object value, out string converted);
-        bool TryReadType(Type type, string value, out object converted);
-    }
-}

Dialogs/FormAbout.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other {
+namespace TweetDuck.Dialogs {
     sealed partial class FormAbout {
         /// <summary>
         /// Required designer variable.

Dialogs/FormAbout.cs

@@ -2,9 +2,10 @@
 using System.Drawing;
 using System.IO;
 using System.Windows.Forms;
-using TweetDuck.Core.Utils;
+using TweetDuck.Management;
+using TweetDuck.Utils;
 
-namespace TweetDuck.Core.Other{
+namespace TweetDuck.Dialogs{
     sealed partial class FormAbout : Form, FormManager.IAppDialog{
         private const string TipsLink = "https://github.com/chylex/TweetDuck/wiki";
         private const string IssuesLink = "https://github.com/chylex/TweetDuck/issues";
@@ -12,7 +13,7 @@ namespace TweetDuck.Core.Other{
         public FormAbout(){
             InitializeComponent();
 
-            Text = "About "+Program.BrandName+" "+Program.VersionTag;
+            Text = "About " + Program.BrandName + " " + Program.VersionTag;
 
             labelDescription.Text = "TweetDuck was created by chylex as a replacement to the discontinued official TweetDeck client for Windows.\n\nThe program is available for free under the open source MIT license.";
             

Dialogs/FormGuide.Designer.cs

@@ -1,21 +1,10 @@
-namespace TweetDuck.Core.Other {
+namespace TweetDuck.Dialogs {
     partial class FormGuide {
         /// <summary>
         /// Required designer variable.
         /// </summary>
         private System.ComponentModel.IContainer components = null;
 
-        /// <summary>
-        /// Clean up any resources being used.
-        /// </summary>
-        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
-        protected override void Dispose(bool disposing) {
-            if (disposing && (components != null)) {
-                components.Dispose();
-            }
-            base.Dispose(disposing);
-        }
-
         #region Windows Form Designer generated code
 
         /// <summary>

Dialogs/FormGuide.cs

@@ -1,16 +1,18 @@
 using System.Drawing;
+using System.Text.RegularExpressions;
 using System.Windows.Forms;
 using CefSharp;
 using CefSharp.WinForms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Handling;
-using TweetDuck.Core.Handling.General;
-using TweetDuck.Core.Utils;
-using System.Text.RegularExpressions;
-using TweetDuck.Data;
-using TweetDuck.Resources;
+using TweetDuck.Browser;
+using TweetDuck.Browser.Adapters;
+using TweetDuck.Browser.Data;
+using TweetDuck.Browser.Handling;
+using TweetDuck.Browser.Handling.General;
+using TweetDuck.Controls;
+using TweetDuck.Management;
+using TweetDuck.Utils;
 
-namespace TweetDuck.Core.Other{
+namespace TweetDuck.Dialogs{
     sealed partial class FormGuide : Form, FormManager.IAppDialog{
         private const string GuideUrl = "https://tweetduck.chylex.com/guide/v2/";
         private const string GuidePathRegex = @"^guide(?:/v\d+)?(?:/(#.*))?";
@@ -37,7 +39,7 @@ namespace TweetDuck.Core.Other{
         }
 
         public static void Show(string hash = null){
-            string url = GuideUrl+(hash ?? string.Empty);
+            string url = GuideUrl + (hash ?? string.Empty);
             FormGuide guide = FormManager.TryFind<FormGuide>();
             
             if (guide == null){
@@ -54,18 +56,21 @@ namespace TweetDuck.Core.Other{
             }
         }
 
+        #pragma warning disable IDE0069 // Disposable fields should be disposed
         private readonly ChromiumWebBrowser browser;
+        #pragma warning restore IDE0069 // Disposable fields should be disposed
+
         private string nextUrl;
 
         private FormGuide(string url, FormBrowser owner){
             InitializeComponent();
 
-            Text = Program.BrandName+" Guide";
-            Size = new Size(owner.Size.Width*3/4, owner.Size.Height*3/4);
+            Text = Program.BrandName + " Guide";
+            Size = new Size(owner.Size.Width * 3 / 4, owner.Size.Height * 3 / 4);
             VisibleChanged += (sender, args) => this.MoveToCenter(owner);
 
-            ResourceHandlerFactory resourceHandlerFactory = new ResourceHandlerFactory();
-            resourceHandlerFactory.RegisterHandler(DummyPage);
+            var resourceRequestHandler = new ResourceRequestHandlerBase();
+            resourceRequestHandler.ResourceHandlers.Register(DummyPage);
             
             this.browser = new ChromiumWebBrowser(url){
                 MenuHandler = new ContextMenuGuide(owner),
@@ -73,7 +78,7 @@ namespace TweetDuck.Core.Other{
                 KeyboardHandler = new KeyboardHandlerBase(),
                 LifeSpanHandler = new LifeSpanHandler(),
                 RequestHandler = new RequestHandlerBase(true),
-                ResourceHandlerFactory = resourceHandlerFactory
+                ResourceRequestHandlerFactory = resourceRequestHandler.SelfFactory
             };
 
             browser.LoadingStateChanged += browser_LoadingStateChanged;
@@ -85,10 +90,15 @@ namespace TweetDuck.Core.Other{
             browser.SetupZoomEvents();
 
             Controls.Add(browser);
+            Disposed += (sender, args) => browser.Dispose();
+        }
 
-            Disposed += (sender, args) => {
-                browser.Dispose();
-            };
+        protected override void Dispose(bool disposing){
+            if (disposing){
+                components?.Dispose();
+            }
+
+            base.Dispose(disposing);
         }
 
         private void Reload(string url){
@@ -116,7 +126,7 @@ namespace TweetDuck.Core.Other{
         }
 
         private void browser_FrameLoadEnd(object sender, FrameLoadEndEventArgs e){
-            ScriptLoader.ExecuteScript(e.Frame, "Array.prototype.forEach.call(document.getElementsByTagName('A'), ele => ele.addEventListener('click', e => { e.preventDefault(); window.open(ele.getAttribute('href')); }))", "gen:links");
+            CefScriptExecutor.RunScript(e.Frame, "Array.prototype.forEach.call(document.getElementsByTagName('A'), ele => ele.addEventListener('click', e => { e.preventDefault(); window.open(ele.getAttribute('href')); }))", "gen:links");
         }
     }
 }

Dialogs/FormMessage.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other {
+namespace TweetDuck.Dialogs {
     partial class FormMessage {
         /// <summary>
         /// Required designer variable.

Dialogs/FormMessage.cs

@@ -1,10 +1,10 @@
 using System;
 using System.Drawing;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
+using TweetDuck.Utils;
 
-namespace TweetDuck.Core.Other{
+namespace TweetDuck.Dialogs{
     [Flags]
     enum ControlType{
         None = 0,
@@ -43,7 +43,8 @@ namespace TweetDuck.Core.Other{
         }
 
         public static bool Show(string caption, string text, MessageBoxIcon icon, string buttonAccept, string buttonCancel){
-            using(FormMessage message = new FormMessage(caption, text, icon)){
+            using FormMessage message = new FormMessage(caption, text, icon);
+
             if (buttonCancel == null){
                 message.AddButton(buttonAccept, DialogResult.OK, ControlType.Cancel | ControlType.Focused);
             }
@@ -54,7 +55,6 @@ namespace TweetDuck.Core.Other{
 
             return message.ShowDialog() == DialogResult.OK;
         }
-        }
 
         // Instance
 
@@ -133,7 +133,7 @@ namespace TweetDuck.Core.Other{
                 Font = SystemFonts.MessageBoxFont,
                 Location = new Point(0, 12),
                 Size = new Size(BrowserUtils.Scale(88, dpiScale), BrowserUtils.Scale(26, dpiScale)),
-                TabIndex = 256-buttonCount,
+                TabIndex = 256 - buttonCount,
                 Text = title,
                 UseVisualStyleBackColor = true
             };
@@ -171,17 +171,17 @@ namespace TweetDuck.Core.Other{
             
             control.Size = new Size(BrowserUtils.Scale(control.Width, dpiScale), BrowserUtils.Scale(control.Height, dpiScale));
 
-            minFormWidth += control.Width+control.Margin.Horizontal;
+            minFormWidth += control.Width + control.Margin.Horizontal;
             ClientWidth = Math.Max(realFormWidth, minFormWidth);
         }
         
         private void RecalculateButtonLocation(){
             int dist = ButtonDistance;
-            int start = ClientWidth-dist;
+            int start = ClientWidth - dist;
 
             for(int index = 0; index < buttonCount; index++){
                 Control control = panelActions.Controls[index];
-                control.Location = new Point(start-index*dist, control.Location.Y);
+                control.Location = new Point(start - index * dist, control.Location.Y);
             }
         }
 
@@ -194,17 +194,17 @@ namespace TweetDuck.Core.Other{
             int labelOffset = BrowserUtils.Scale(8, dpiScale);
 
             if (isMultiline && !wasLabelMultiline){
-                labelMessage.Location = new Point(labelMessage.Location.X, labelMessage.Location.Y-labelOffset);
+                labelMessage.Location = new Point(labelMessage.Location.X, labelMessage.Location.Y - labelOffset);
                 prevLabelHeight += labelOffset;
             }
             else if (!isMultiline && wasLabelMultiline){
-                labelMessage.Location = new Point(labelMessage.Location.X, labelMessage.Location.Y+labelOffset);
+                labelMessage.Location = new Point(labelMessage.Location.X, labelMessage.Location.Y + labelOffset);
                 prevLabelHeight -= labelOffset;
             }
 
-            realFormWidth = ClientWidth-(icon == null ? BrowserUtils.Scale(50, dpiScale) : 0)+labelMessage.Width-prevLabelWidth;
+            realFormWidth = ClientWidth - (icon == null ? BrowserUtils.Scale(50, dpiScale) : 0) + labelMessage.Width - prevLabelWidth;
             ClientWidth = Math.Max(realFormWidth, minFormWidth);
-            Height += labelMessage.Height-prevLabelHeight;
+            Height += labelMessage.Height - prevLabelHeight;
 
             prevLabelWidth = labelMessage.Width;
             prevLabelHeight = labelMessage.Height;
@@ -213,7 +213,7 @@ namespace TweetDuck.Core.Other{
 
         protected override void OnPaint(PaintEventArgs e){
             if (icon != null){
-                e.Graphics.DrawIcon(icon, BrowserUtils.Scale(25, dpiScale), 1+BrowserUtils.Scale(25, dpiScale));
+                e.Graphics.DrawIcon(icon, BrowserUtils.Scale(25, dpiScale), 1 + BrowserUtils.Scale(25, dpiScale));
             }
 
             base.OnPaint(e);

Dialogs/FormPlugins.Designer.cs

@@ -1,4 +1,6 @@
-namespace TweetDuck.Core.Other {
+using TweetDuck.Controls;
+
+namespace TweetDuck.Dialogs {
     partial class FormPlugins {
         /// <summary>
         /// Required designer variable.
@@ -27,7 +29,7 @@
             this.btnClose = new System.Windows.Forms.Button();
             this.btnReload = new System.Windows.Forms.Button();
             this.btnOpenFolder = new System.Windows.Forms.Button();
-            this.flowLayoutPlugins = new TweetDuck.Plugins.Controls.PluginListFlowLayout();
+            this.flowLayoutPlugins = new FlowLayoutPanelNoHScroll();
             this.timerLayout = new System.Windows.Forms.Timer(this.components);
             this.SuspendLayout();
             // 
@@ -117,7 +119,7 @@
         private System.Windows.Forms.Button btnClose;
         private System.Windows.Forms.Button btnReload;
         private System.Windows.Forms.Button btnOpenFolder;
-        private Plugins.Controls.PluginListFlowLayout flowLayoutPlugins;
+        private FlowLayoutPanelNoHScroll flowLayoutPlugins;
         private System.Windows.Forms.Timer timerLayout;
     }
 }

Dialogs/FormPlugins.cs

@@ -1,13 +1,14 @@
 using System;
-using System.Diagnostics;
 using System.Drawing;
 using System.Linq;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
+using TweetDuck.Management;
 using TweetDuck.Plugins;
-using TweetDuck.Plugins.Controls;
+using TweetLib.Core;
+using TweetLib.Core.Features.Plugins;
 
-namespace TweetDuck.Core.Other{
+namespace TweetDuck.Dialogs{
     sealed partial class FormPlugins : Form, FormManager.IAppDialog{
         private static UserConfig Config => Program.Config.User;
 
@@ -16,7 +17,7 @@ namespace TweetDuck.Core.Other{
         public FormPlugins(){
             InitializeComponent();
 
-            Text = Program.BrandName+" Plugins";
+            Text = Program.BrandName + " Plugins";
         }
 
         public FormPlugins(PluginManager pluginManager) : this(){
@@ -69,8 +70,8 @@ namespace TweetDuck.Core.Other{
             timerLayout.Stop();
             
             // stupid WinForms scrollbars and panels
-            Padding = new Padding(Padding.Left, Padding.Top, Padding.Right+1, Padding.Bottom+1);
-            Padding = new Padding(Padding.Left, Padding.Top, Padding.Right-1, Padding.Bottom-1);
+            Padding = new Padding(Padding.Left, Padding.Top, Padding.Right + 1, Padding.Bottom + 1);
+            Padding = new Padding(Padding.Left, Padding.Top, Padding.Right - 1, Padding.Bottom - 1);
         }
 
         public void flowLayoutPlugins_Resize(object sender, EventArgs e){
@@ -80,22 +81,22 @@ namespace TweetDuck.Core.Other{
                 return;
             }
 
-            bool showScrollBar = lastPlugin.Location.Y+lastPlugin.Height+1 >= flowLayoutPlugins.Height;
+            bool showScrollBar = lastPlugin.Location.Y + lastPlugin.Height + 1 >= flowLayoutPlugins.Height;
             int horizontalOffset = showScrollBar ? SystemInformation.VerticalScrollBarWidth : 0;
             
             flowLayoutPlugins.AutoScroll = showScrollBar;
             flowLayoutPlugins.VerticalScroll.Visible = showScrollBar;
 
             foreach(Control control in flowLayoutPlugins.Controls){
-                control.Width = flowLayoutPlugins.Width-control.Margin.Horizontal-horizontalOffset;
+                control.Width = flowLayoutPlugins.Width - control.Margin.Horizontal - horizontalOffset;
             }
             
-            flowLayoutPlugins.Controls[flowLayoutPlugins.Controls.Count-1].Visible = !showScrollBar;
+            flowLayoutPlugins.Controls[flowLayoutPlugins.Controls.Count - 1].Visible = !showScrollBar;
             flowLayoutPlugins.Focus();
         }
 
         private void btnOpenFolder_Click(object sender, EventArgs e){
-            using(Process.Start("explorer.exe", '"'+pluginManager.PathCustomPlugins+'"')){}
+            App.SystemHandler.OpenFileExplorer(pluginManager.PathCustomPlugins);
         }
 
         private void btnReload_Click(object sender, EventArgs e){

Dialogs/FormSettings.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other {
+namespace TweetDuck.Dialogs {
     sealed partial class FormSettings {
         /// <summary>
         /// Required designer variable.

Dialogs/FormSettings.cs

@@ -2,17 +2,19 @@
 using System.Collections.Generic;
 using System.Drawing;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Handling.General;
-using TweetDuck.Core.Notification.Example;
-using TweetDuck.Core.Other.Analytics;
-using TweetDuck.Core.Other.Settings;
-using TweetDuck.Core.Other.Settings.Dialogs;
-using TweetDuck.Core.Utils;
-using TweetDuck.Plugins;
-using TweetDuck.Updates;
+using TweetDuck.Browser;
+using TweetDuck.Browser.Handling.General;
+using TweetDuck.Browser.Notification.Example;
+using TweetDuck.Configuration;
+using TweetDuck.Controls;
+using TweetDuck.Dialogs.Settings;
+using TweetDuck.Management;
+using TweetDuck.Management.Analytics;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Systems.Updates;
 
-namespace TweetDuck.Core.Other{
+namespace TweetDuck.Dialogs{
     sealed partial class FormSettings : Form, FormManager.IAppDialog{
         public bool ShouldReloadBrowser { get; private set; }
 
@@ -27,7 +29,7 @@ namespace TweetDuck.Core.Other{
         public FormSettings(FormBrowser browser, PluginManager plugins, UpdateHandler updates, AnalyticsManager analytics, Type startTab){
             InitializeComponent();
 
-            Text = Program.BrandName+" Options";
+            Text = Program.BrandName + " Options";
 
             this.browser = browser;
             this.browser.PauseNotification();
@@ -41,6 +43,7 @@ namespace TweetDuck.Core.Other{
             AddButton("General", () => new TabSettingsGeneral(this.browser.ReloadColumns, updates));
             AddButton("Notifications", () => new TabSettingsNotifications(new FormNotificationExample(this.browser, this.plugins)));
             AddButton("Sounds", () => new TabSettingsSounds(this.browser.PlaySoundNotification));
+            AddButton("Tray", () => new TabSettingsTray());
             AddButton("Feedback", () => new TabSettingsFeedback(analytics, AnalyticsReportGenerator.ExternalInfo.From(this.browser), this.plugins));
             AddButton("Advanced", () => new TabSettingsAdvanced(this.browser.ReinjectCustomCSS, this.browser.OpenDevTools));
 
@@ -79,7 +82,7 @@ namespace TweetDuck.Core.Other{
         private void btnManageOptions_Click(object sender, EventArgs e){
             PrepareUnload();
 
-            using(DialogSettingsManage dialog = new DialogSettingsManage(plugins)){
+            using DialogSettingsManage dialog = new DialogSettingsManage(plugins);
             FormClosing -= FormSettings_FormClosing;
             
             if (dialog.ShowDialog() == DialogResult.OK){
@@ -99,18 +102,17 @@ namespace TweetDuck.Core.Other{
                 PrepareLoad();
             }
         }
-        }
 
         private void btnClose_Click(object sender, EventArgs e){
             Close();
         }
 
-        private void AddButton<T>(string title, Func<T> constructor) where T : BaseTabSettings{
+        private void AddButton<T>(string title, Func<T> constructor) where T : BaseTab{
             FlatButton btn = new FlatButton{
                 BackColor = SystemColors.Control,
                 FlatStyle = FlatStyle.Flat,
                 Font = SystemFonts.MessageBoxFont,
-                Location = new Point(0, (buttonHeight+1)*(panelButtons.Controls.Count/2)),
+                Location = new Point(0, (buttonHeight + 1) * (panelButtons.Controls.Count / 2)),
                 Margin = new Padding(0),
                 Size = new Size(panelButtons.Width, buttonHeight),
                 Text = title,
@@ -125,7 +127,7 @@ namespace TweetDuck.Core.Other{
 
             panelButtons.Controls.Add(new Panel{
                 BackColor = Color.DimGray,
-                Location = new Point(0, panelButtons.Controls[panelButtons.Controls.Count-1].Location.Y+buttonHeight),
+                Location = new Point(0, panelButtons.Controls[panelButtons.Controls.Count - 1].Location.Y + buttonHeight),
                 Margin = new Padding(0),
                 Size = new Size(panelButtons.Width, 1)
             });
@@ -135,7 +137,7 @@ namespace TweetDuck.Core.Other{
             btn.Click += (sender, args) => SelectTab<T>();
         }
 
-        private void SelectTab<T>() where T : BaseTabSettings{
+        private void SelectTab<T>() where T : BaseTab{
             SelectTab(tabs[typeof(T)]);
         }
 
@@ -157,8 +159,8 @@ namespace TweetDuck.Core.Other{
                     }
                 }
 
-                if (tab.Control.Height < panelContents.Height-2){
-                    tab.Control.Height = panelContents.Height-2; // fixes off-by-pixel error on high DPI
+                if (tab.Control.Height < panelContents.Height - 2){
+                    tab.Control.Height = panelContents.Height - 2; // fixes off-by-pixel error on high DPI
                 }
 
                 tab.Control.OnReady();
@@ -195,16 +197,47 @@ namespace TweetDuck.Core.Other{
         private sealed class SettingsTab{
             public Button Button { get; }
 
-            public BaseTabSettings Control => control ?? (control = constructor());
+            public BaseTab Control => control ??= constructor();
             public bool IsInitialized => control != null;
 
-            private readonly Func<BaseTabSettings> constructor;
-            private BaseTabSettings control;
+            private readonly Func<BaseTab> constructor;
+            private BaseTab control;
 
-            public SettingsTab(Button button, Func<BaseTabSettings> constructor){
+            public SettingsTab(Button button, Func<BaseTab> constructor){
                 this.Button = button;
                 this.constructor = constructor;
             }
         }
+
+        internal abstract class BaseTab : UserControl{
+            protected static UserConfig Config => Program.Config.User;
+            protected static SystemConfig SysConfig => Program.Config.System;
+
+            public IEnumerable<Control> InteractiveControls{
+                get{
+                    static IEnumerable<Control> FindInteractiveControls(Control parent){
+                        foreach(Control control in parent.Controls){
+                            if (control is Panel subPanel){
+                                foreach(Control subControl in FindInteractiveControls(subPanel)){
+                                    yield return subControl;
+                                }
+                            }
+                            else{
+                                yield return control;
+                            }
+                        }
+                    }
+
+                    return FindInteractiveControls(this);
+                }
+            }
+
+            protected BaseTab(){
+                Padding = new Padding(6);
+            }
+
+            public virtual void OnReady(){}
+            public virtual void OnClosing(){}
+        }
     }
 }

Dialogs/Settings/DialogSettingsAnalytics.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings.Dialogs {
+namespace TweetDuck.Dialogs.Settings {
     partial class DialogSettingsAnalytics {
         /// <summary>
         /// Required designer variable.

Dialogs/Settings/DialogSettingsAnalytics.cs

@@ -1,16 +1,14 @@
 using System;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Other.Analytics;
+using TweetDuck.Controls;
+using TweetDuck.Management.Analytics;
 
-namespace TweetDuck.Core.Other.Settings.Dialogs{
+namespace TweetDuck.Dialogs.Settings{
     sealed partial class DialogSettingsAnalytics : Form{
-        public string CefArgs => textBoxReport.Text;
-
         public DialogSettingsAnalytics(AnalyticsReport report){
             InitializeComponent();
             
-            Text = Program.BrandName+" Options - Analytics Report";
+            Text = Program.BrandName + " Options - Analytics Report";
             
             textBoxReport.EnableMultilineShortcuts();
             textBoxReport.Text = report.ToString().TrimEnd();

Dialogs/Settings/DialogSettingsCSS.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings.Dialogs {
+namespace TweetDuck.Dialogs.Settings {
     partial class DialogSettingsCSS {
         /// <summary>
         /// Required designer variable.

Dialogs/Settings/DialogSettingsCSS.cs

@@ -2,10 +2,10 @@
 using System.Linq;
 using System.Text.RegularExpressions;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
+using TweetDuck.Utils;
 
-namespace TweetDuck.Core.Other.Settings.Dialogs{
+namespace TweetDuck.Dialogs.Settings{
     sealed partial class DialogSettingsCSS : Form{
         public string BrowserCSS => textBoxBrowserCSS.Text;
         public string NotificationCSS => textBoxNotificationCSS.Text;
@@ -16,7 +16,7 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
         public DialogSettingsCSS(string browserCSS, string notificationCSS, Action<string> reinjectBrowserCSS, Action openDevTools){
             InitializeComponent();
             
-            Text = Program.BrandName+" Options - CSS";
+            Text = Program.BrandName + " Options - CSS";
 
             this.reinjectBrowserCSS = reinjectBrowserCSS;
             this.openDevTools = openDevTools;
@@ -64,21 +64,21 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
                         }
                     }
                     
-                    if (!(deleteTo < text.Length-1 && text[deleteTo] == '\r' && text[deleteTo+1] == '\n')){
+                    if (!(deleteTo < text.Length - 1 && text[deleteTo] == '\r' && text[deleteTo + 1] == '\n')){
                         ++deleteTo;
                     }
 
-                    tb.Select(deleteTo, tb.SelectionLength+tb.SelectionStart-deleteTo);
+                    tb.Select(deleteTo, tb.SelectionLength + tb.SelectionStart - deleteTo);
                     tb.SelectedText = string.Empty;
                 }
             }
             else if (e.KeyCode == Keys.Back && e.Modifiers == Keys.None){
                 int deleteTo = tb.SelectionStart;
 
-                if (deleteTo > 1 && text[deleteTo-1] == ' ' && text[deleteTo-2] == ' '){
+                if (deleteTo > 1 && text[deleteTo - 1] == ' ' && text[deleteTo - 2] == ' '){
                     e.SuppressKeyPress = true;
 
-                    tb.Select(deleteTo-2, 2);
+                    tb.Select(deleteTo - 2, 2);
                     tb.SelectedText = string.Empty;
                 }
             }
@@ -89,28 +89,28 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
                 if (insertAt == 0){
                     return;
                 }
-                else if (text[insertAt-1] == '{'){
-                    insertText = Environment.NewLine+"  ";
+                else if (text[insertAt - 1] == '{'){
+                    insertText = Environment.NewLine + "  ";
 
-                    int nextBracket = insertAt < text.Length ? text.IndexOfAny(new char[]{ '{', '}' }, insertAt+1) : -1;
+                    int nextBracket = insertAt < text.Length ? text.IndexOfAny(new char[]{ '{', '}' }, insertAt + 1) : -1;
 
                     if (nextBracket == -1 || text[nextBracket] == '{'){
-                        string insertExtra = Environment.NewLine+"}";
+                        string insertExtra = Environment.NewLine + "}";
                         insertText += insertExtra;
                         cursorOffset -= insertExtra.Length;
                     }
                 }
                 else{
-                    int lineStart = text.LastIndexOf('\n', tb.SelectionStart-1);
+                    int lineStart = text.LastIndexOf('\n', tb.SelectionStart - 1);
 
-                    Match match = Regex.Match(text.Substring(lineStart == -1 ? 0 : lineStart+1), "^([ \t]+)");
-                    insertText = match.Success ? Environment.NewLine+match.Groups[1].Value : null;
+                    Match match = Regex.Match(text.Substring(lineStart == -1 ? 0 : lineStart + 1), "^([ \t]+)");
+                    insertText = match.Success ? Environment.NewLine + match.Groups[1].Value : null;
                 }
 
                 if (!string.IsNullOrEmpty(insertText)){
                     e.SuppressKeyPress = true;
                     tb.Text = text.Insert(insertAt, insertText);
-                    tb.SelectionStart = insertAt+cursorOffset+insertText.Length;
+                    tb.SelectionStart = insertAt + cursorOffset + insertText.Length;
                 }
             }
         }

Dialogs/Settings/DialogSettingsCefArgs.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings.Dialogs {
+namespace TweetDuck.Dialogs.Settings {
     partial class DialogSettingsCefArgs {
         /// <summary>
         /// Required designer variable.

Dialogs/Settings/DialogSettingsCefArgs.cs

@@ -1,10 +1,10 @@
 using System;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Utils;
-using TweetDuck.Data;
+using TweetDuck.Controls;
+using TweetDuck.Utils;
+using TweetLib.Core.Collections;
 
-namespace TweetDuck.Core.Other.Settings.Dialogs{
+namespace TweetDuck.Dialogs.Settings{
     sealed partial class DialogSettingsCefArgs : Form{
         public string CefArgs => textBoxArgs.Text;
 
@@ -13,7 +13,7 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
         public DialogSettingsCefArgs(string args){
             InitializeComponent();
             
-            Text = Program.BrandName+" Options - CEF Arguments";
+            Text = Program.BrandName + " Options - CEF Arguments";
             
             textBoxArgs.EnableMultilineShortcuts();
             textBoxArgs.Text = initialArgs = args ?? "";
@@ -32,7 +32,7 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
             }
 
             int count = CommandLineArgs.ReadCefArguments(CefArgs).Count;
-            string prompt = count == 0 && !string.IsNullOrWhiteSpace(initialArgs) ? "All current arguments will be removed. Continue?" : count+(count == 1 ? " argument was" : " arguments were")+" detected. Continue?";
+            string prompt = count == 0 && !string.IsNullOrWhiteSpace(initialArgs) ? "All current arguments will be removed. Continue?" : count + (count == 1 ? " argument was" : " arguments were") + " detected. Continue?";
 
             if (FormMessage.Question("Confirm CEF Arguments", prompt, FormMessage.OK, FormMessage.Cancel)){
                 DialogResult = DialogResult.OK;

Dialogs/Settings/DialogSettingsExternalProgram.Designer.cs

@@ -0,0 +1,154 @@
+namespace TweetDuck.Dialogs.Settings {
+    partial class DialogSettingsExternalProgram {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing) {
+            if (disposing && (components != null)) {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent() {
+            this.textBoxPath = new System.Windows.Forms.TextBox();
+            this.btnCancel = new System.Windows.Forms.Button();
+            this.btnApply = new System.Windows.Forms.Button();
+            this.labelPath = new System.Windows.Forms.Label();
+            this.labelArgs = new System.Windows.Forms.Label();
+            this.textBoxArgs = new System.Windows.Forms.TextBox();
+            this.btnBrowse = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // textBoxPath
+            // 
+            this.textBoxPath.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+            | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.textBoxPath.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.textBoxPath.Location = new System.Drawing.Point(12, 30);
+            this.textBoxPath.Name = "textBoxPath";
+            this.textBoxPath.Size = new System.Drawing.Size(336, 23);
+            this.textBoxPath.TabIndex = 1;
+            // 
+            // btnCancel
+            // 
+            this.btnCancel.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+            this.btnCancel.AutoSize = true;
+            this.btnCancel.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.btnCancel.Location = new System.Drawing.Point(307, 118);
+            this.btnCancel.Name = "btnCancel";
+            this.btnCancel.Padding = new System.Windows.Forms.Padding(2, 0, 2, 0);
+            this.btnCancel.Size = new System.Drawing.Size(57, 25);
+            this.btnCancel.TabIndex = 6;
+            this.btnCancel.Text = "Cancel";
+            this.btnCancel.UseVisualStyleBackColor = true;
+            this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
+            // 
+            // btnApply
+            // 
+            this.btnApply.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+            this.btnApply.AutoSize = true;
+            this.btnApply.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.btnApply.Location = new System.Drawing.Point(370, 118);
+            this.btnApply.Name = "btnApply";
+            this.btnApply.Padding = new System.Windows.Forms.Padding(2, 0, 2, 0);
+            this.btnApply.Size = new System.Drawing.Size(52, 25);
+            this.btnApply.TabIndex = 5;
+            this.btnApply.Text = "Apply";
+            this.btnApply.UseVisualStyleBackColor = true;
+            this.btnApply.Click += new System.EventHandler(this.btnApply_Click);
+            // 
+            // labelPath
+            // 
+            this.labelPath.AutoSize = true;
+            this.labelPath.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.labelPath.Location = new System.Drawing.Point(12, 9);
+            this.labelPath.Margin = new System.Windows.Forms.Padding(3, 0, 3, 3);
+            this.labelPath.Name = "labelPath";
+            this.labelPath.Size = new System.Drawing.Size(109, 15);
+            this.labelPath.TabIndex = 0;
+            this.labelPath.Text = "Path to Application";
+            // 
+            // labelArgs
+            // 
+            this.labelArgs.AutoSize = true;
+            this.labelArgs.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.labelArgs.Location = new System.Drawing.Point(12, 68);
+            this.labelArgs.Margin = new System.Windows.Forms.Padding(3, 12, 3, 3);
+            this.labelArgs.Name = "labelArgs";
+            this.labelArgs.Size = new System.Drawing.Size(124, 15);
+            this.labelArgs.TabIndex = 3;
+            this.labelArgs.Text = "Additional Arguments";
+            // 
+            // textBoxArgs
+            // 
+            this.textBoxArgs.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+            | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.textBoxArgs.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.textBoxArgs.Location = new System.Drawing.Point(12, 89);
+            this.textBoxArgs.Name = "textBoxArgs";
+            this.textBoxArgs.Size = new System.Drawing.Size(410, 23);
+            this.textBoxArgs.TabIndex = 4;
+            // 
+            // btnBrowse
+            // 
+            this.btnBrowse.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
+            this.btnBrowse.AutoSize = true;
+            this.btnBrowse.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.btnBrowse.Location = new System.Drawing.Point(354, 28);
+            this.btnBrowse.Name = "btnBrowse";
+            this.btnBrowse.Padding = new System.Windows.Forms.Padding(2, 0, 2, 0);
+            this.btnBrowse.Size = new System.Drawing.Size(68, 25);
+            this.btnBrowse.TabIndex = 2;
+            this.btnBrowse.Text = "Browse...";
+            this.btnBrowse.UseVisualStyleBackColor = true;
+            this.btnBrowse.Click += new System.EventHandler(this.btnBrowse_Click);
+            // 
+            // DialogSettingsExternalProgram
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(434, 155);
+            this.Controls.Add(this.btnBrowse);
+            this.Controls.Add(this.textBoxArgs);
+            this.Controls.Add(this.labelArgs);
+            this.Controls.Add(this.labelPath);
+            this.Controls.Add(this.btnApply);
+            this.Controls.Add(this.btnCancel);
+            this.Controls.Add(this.textBoxPath);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "DialogSettingsExternalProgram";
+            this.ShowIcon = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.TextBox textBoxPath;
+        private System.Windows.Forms.Button btnCancel;
+        private System.Windows.Forms.Button btnApply;
+        private System.Windows.Forms.Label labelPath;
+        private System.Windows.Forms.Label labelArgs;
+        private System.Windows.Forms.TextBox textBoxArgs;
+        private System.Windows.Forms.Button btnBrowse;
+    }
+}

Dialogs/Settings/DialogSettingsExternalProgram.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Windows.Forms;
+using TweetLib.Core.Utils;
+using IOPath = System.IO.Path;
+
+namespace TweetDuck.Dialogs.Settings{
+    sealed partial class DialogSettingsExternalProgram : Form{
+        public string Path{
+            get => StringUtils.NullIfEmpty(textBoxPath.Text);
+            set => textBoxPath.Text = value ?? string.Empty;
+        }
+
+        public string Args{
+            get => StringUtils.NullIfEmpty(textBoxArgs.Text);
+            set => textBoxArgs.Text = value ?? string.Empty;
+        }
+
+        private readonly string fileDialogTitle;
+
+        public DialogSettingsExternalProgram(string windowTitle, string fileDialogTitle){
+            InitializeComponent();
+            
+            Text = Program.BrandName + " Options - " + windowTitle;
+            AcceptButton = btnApply;
+            CancelButton = btnCancel;
+
+            this.fileDialogTitle = fileDialogTitle;
+        }
+
+        private void btnBrowse_Click(object sender, EventArgs e){
+            using OpenFileDialog dialog = new OpenFileDialog{
+                AutoUpgradeEnabled = true,
+                DereferenceLinks = true,
+                InitialDirectory = IOPath.GetDirectoryName(Path), // returns null if argument is null
+                Title = fileDialogTitle,
+                Filter = "Executables (*.exe;*.bat;*.cmd)|*.exe;*.bat;*.cmd|All Files (*.*)|*.*"
+            };
+
+            if (dialog.ShowDialog() == DialogResult.OK && Path != dialog.FileName){
+                Path = dialog.FileName;
+                Args = string.Empty;
+            }
+        }
+        
+        private void btnApply_Click(object sender, EventArgs e){
+            DialogResult = DialogResult.OK;
+            Close();
+        }
+
+        private void btnCancel_Click(object sender, EventArgs e){
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+    }
+}

Dialogs/Settings/DialogSettingsManage.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings.Dialogs {
+namespace TweetDuck.Dialogs.Settings {
     partial class DialogSettingsManage {
         /// <summary>
         /// Required designer variable.

Dialogs/Settings/DialogSettingsManage.cs

@@ -3,11 +3,11 @@ using System.Collections.Generic;
 using System.IO;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
-using TweetDuck.Core.Management;
-using TweetDuck.Core.Utils;
-using TweetDuck.Plugins;
+using TweetDuck.Management;
+using TweetLib.Core.Features.Plugins;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Core.Other.Settings.Dialogs{
+namespace TweetDuck.Dialogs.Settings{
     sealed partial class DialogSettingsManage : Form{
         private enum State{
             Deciding, Reset, Import, Export
@@ -124,7 +124,7 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
                     // Continue...
                     panelDecision.Visible = false;
                     panelSelection.Visible = true;
-                    Height += panelSelection.Height-panelDecision.Height;
+                    Height += panelSelection.Height - panelDecision.Height;
                     break;
 
                 case State.Reset:

Dialogs/Settings/DialogSettingsRestart.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings.Dialogs {
+namespace TweetDuck.Dialogs.Settings {
     partial class DialogSettingsRestart {
         /// <summary>
         /// Required designer variable.

Dialogs/Settings/DialogSettingsRestart.cs

@@ -1,9 +1,9 @@
 using System;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
-using TweetDuck.Data;
+using TweetLib.Core.Collections;
 
-namespace TweetDuck.Core.Other.Settings.Dialogs{
+namespace TweetDuck.Dialogs.Settings{
     sealed partial class DialogSettingsRestart : Form{
         public CommandLineArgs Args { get; private set; }
 
@@ -18,13 +18,13 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
                 tbDataFolder.Enabled = false;
             }
             else{
-                tbDataFolder.Text = currentArgs.GetValue(Arguments.ArgDataFolder, string.Empty);
+                tbDataFolder.Text = currentArgs.GetValue(Arguments.ArgDataFolder) ?? string.Empty;
                 tbDataFolder.TextChanged += control_Change;
             }
 
             control_Change(this, EventArgs.Empty);
 
-            Text = Program.BrandName+" Arguments";
+            Text = Program.BrandName + " Arguments";
         }
 
         private void control_Change(object sender, EventArgs e){
@@ -38,7 +38,7 @@ namespace TweetDuck.Core.Other.Settings.Dialogs{
                 Args.SetValue(Arguments.ArgDataFolder, tbDataFolder.Text);
             }
 
-            tbShortcutTarget.Text = $@"""{Application.ExecutablePath}""{(Args.Count > 0 ? " " : "")}{Args}";
+            tbShortcutTarget.Text = $@"""{Program.ExecutablePath}""{(Args.Count > 0 ? " " : "")}{Args}";
             tbShortcutTarget.Select(tbShortcutTarget.Text.Length, 0);
         }
 

Dialogs/Settings/DialogSettingsSearchEngine.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings.Dialogs {
+namespace TweetDuck.Dialogs.Settings {
     partial class DialogSettingsSearchEngine {
         /// <summary>
         /// Required designer variable.

Dialogs/Settings/DialogSettingsSearchEngine.cs

@@ -1,14 +1,14 @@
 using System;
 using System.Windows.Forms;
 
-namespace TweetDuck.Core.Other.Settings.Dialogs{
+namespace TweetDuck.Dialogs.Settings{
     sealed partial class DialogSettingsSearchEngine : Form{
         public string Url => textBoxUrl.Text;
 
         public DialogSettingsSearchEngine(){
             InitializeComponent();
             
-            Text = Program.BrandName+" Options - Custom Search Engine";
+            Text = Program.BrandName + " Options - Custom Search Engine";
             
             textBoxUrl.Text = Program.Config.User.SearchEngineUrl ?? "";
             textBoxUrl.Select(textBoxUrl.Text.Length, 0);

Dialogs/Settings/TabSettingsAdvanced.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings {
+namespace TweetDuck.Dialogs.Settings {
     partial class TabSettingsAdvanced {
         /// <summary> 
         /// Required designer variable.
@@ -32,7 +32,7 @@
             this.btnRestart = new System.Windows.Forms.Button();
             this.btnOpenAppFolder = new System.Windows.Forms.Button();
             this.btnOpenDataFolder = new System.Windows.Forms.Button();
-            this.numClearCacheThreshold = new TweetDuck.Core.Controls.NumericUpDownEx();
+            this.numClearCacheThreshold = new TweetDuck.Controls.NumericUpDownEx();
             this.checkClearCacheAuto = new System.Windows.Forms.CheckBox();
             this.labelApp = new System.Windows.Forms.Label();
             this.panelAppButtons = new System.Windows.Forms.Panel();
@@ -41,6 +41,8 @@
             this.panelConfiguration = new System.Windows.Forms.Panel();
             this.labelConfiguration = new System.Windows.Forms.Label();
             this.flowPanel = new System.Windows.Forms.FlowLayoutPanel();
+            this.labelDevTools = new System.Windows.Forms.Label();
+            this.checkDevToolsWindowOnTop = new System.Windows.Forms.CheckBox();
             ((System.ComponentModel.ISupportInitialize)(this.numClearCacheThreshold)).BeginInit();
             this.panelAppButtons.SuspendLayout();
             this.panelClearCacheAuto.SuspendLayout();
@@ -240,6 +242,8 @@
             this.flowPanel.Controls.Add(this.panelClearCacheAuto);
             this.flowPanel.Controls.Add(this.labelConfiguration);
             this.flowPanel.Controls.Add(this.panelConfiguration);
+            this.flowPanel.Controls.Add(this.labelDevTools);
+            this.flowPanel.Controls.Add(this.checkDevToolsWindowOnTop);
             this.flowPanel.FlowDirection = System.Windows.Forms.FlowDirection.TopDown;
             this.flowPanel.Location = new System.Drawing.Point(9, 9);
             this.flowPanel.Name = "flowPanel";
@@ -247,6 +251,29 @@
             this.flowPanel.TabIndex = 0;
             this.flowPanel.WrapContents = false;
             // 
+            // labelDevTools
+            // 
+            this.labelDevTools.AutoSize = true;
+            this.labelDevTools.Font = new System.Drawing.Font("Segoe UI Semibold", 10.5F, System.Drawing.FontStyle.Bold);
+            this.labelDevTools.Location = new System.Drawing.Point(0, 302);
+            this.labelDevTools.Margin = new System.Windows.Forms.Padding(0, 30, 0, 1);
+            this.labelDevTools.Name = "labelDevTools";
+            this.labelDevTools.Size = new System.Drawing.Size(156, 19);
+            this.labelDevTools.TabIndex = 7;
+            this.labelDevTools.Text = "DEVELOPMENT TOOLS";
+            // 
+            // checkDevToolsWindowOnTop
+            // 
+            this.checkDevToolsWindowOnTop.AutoSize = true;
+            this.checkDevToolsWindowOnTop.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.checkDevToolsWindowOnTop.Location = new System.Drawing.Point(6, 328);
+            this.checkDevToolsWindowOnTop.Margin = new System.Windows.Forms.Padding(6, 6, 0, 2);
+            this.checkDevToolsWindowOnTop.Name = "checkDevToolsWindowOnTop";
+            this.checkDevToolsWindowOnTop.Size = new System.Drawing.Size(168, 19);
+            this.checkDevToolsWindowOnTop.TabIndex = 8;
+            this.checkDevToolsWindowOnTop.Text = "Dev Tools Window On Top";
+            this.checkDevToolsWindowOnTop.UseVisualStyleBackColor = true;
+            // 
             // TabSettingsAdvanced
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
@@ -284,5 +311,7 @@
         private Controls.NumericUpDownEx numClearCacheThreshold;
         private System.Windows.Forms.CheckBox checkClearCacheAuto;
         private System.Windows.Forms.FlowLayoutPanel flowPanel;
+        private System.Windows.Forms.Label labelDevTools;
+        private System.Windows.Forms.CheckBox checkDevToolsWindowOnTop;
     }
 }

Dialogs/Settings/TabSettingsAdvanced.cs

@@ -1,15 +1,14 @@
 using System;
-using System.Diagnostics;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 using TweetDuck.Configuration;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Management;
-using TweetDuck.Core.Other.Settings.Dialogs;
-using TweetDuck.Core.Utils;
+using TweetDuck.Controls;
+using TweetDuck.Management;
+using TweetDuck.Utils;
+using TweetLib.Core;
 
-namespace TweetDuck.Core.Other.Settings{
-    sealed partial class TabSettingsAdvanced : BaseTabSettings{
+namespace TweetDuck.Dialogs.Settings{
+    sealed partial class TabSettingsAdvanced : FormSettings.BaseTab{
         private readonly Action<string> reinjectBrowserCSS;
         private readonly Action openDevTools;
 
@@ -36,7 +35,7 @@ namespace TweetDuck.Core.Other.Settings{
             numClearCacheThreshold.SetValueSafe(SysConfig.ClearCacheThreshold);
             
             BrowserCache.GetCacheSize(task => {
-                string text = task.Status == TaskStatus.RanToCompletion ? (int)Math.Ceiling(task.Result/(1024.0*1024.0))+" MB" : "unknown";
+                string text = task.Status == TaskStatus.RanToCompletion ? (int)Math.Ceiling(task.Result / (1024.0 * 1024.0)) + " MB" : "unknown";
                 this.InvokeSafe(() => btnClearCache.Text = $"Clear Cache ({text})");
             });
 
@@ -44,6 +43,16 @@ namespace TweetDuck.Core.Other.Settings{
 
             toolTip.SetToolTip(btnEditCefArgs, "Set custom command line arguments for Chromium Embedded Framework.");
             toolTip.SetToolTip(btnEditCSS, "Set custom CSS for browser and notification windows.");
+
+            // development tools
+
+            toolTip.SetToolTip(checkDevToolsWindowOnTop, "Sets whether dev tool windows appears on top of other windows.");
+
+            checkDevToolsWindowOnTop.Checked = Config.DevToolsWindowOnTop;
+
+            if (!BrowserUtils.HasDevTools){
+                checkDevToolsWindowOnTop.Enabled = false;
+            }
         }
 
         public override void OnReady(){
@@ -57,6 +66,8 @@ namespace TweetDuck.Core.Other.Settings{
             
             btnEditCefArgs.Click += btnEditCefArgs_Click;
             btnEditCSS.Click += btnEditCSS_Click;
+
+            checkDevToolsWindowOnTop.CheckedChanged += checkDevToolsWindowOnTop_CheckedChanged;
         }
 
         public override void OnClosing(){
@@ -67,11 +78,11 @@ namespace TweetDuck.Core.Other.Settings{
         #region Application
         
         private void btnOpenAppFolder_Click(object sender, EventArgs e){
-            using(Process.Start("explorer.exe", "\""+Program.ProgramPath+"\"")){}
+            App.SystemHandler.OpenFileExplorer(Program.ProgramPath);
         }
 
         private void btnOpenDataFolder_Click(object sender, EventArgs e){
-            using(Process.Start("explorer.exe", "\""+Program.StoragePath+"\"")){}
+            App.SystemHandler.OpenFileExplorer(Program.StoragePath);
         }
 
         private void btnRestart_Click(object sender, EventArgs e){
@@ -79,12 +90,12 @@ namespace TweetDuck.Core.Other.Settings{
         }
 
         private void btnRestartArgs_Click(object sender, EventArgs e){
-            using(DialogSettingsRestart dialog = new DialogSettingsRestart(Arguments.GetCurrentClean())){
+            using DialogSettingsRestart dialog = new DialogSettingsRestart(Arguments.GetCurrentClean());
+
             if (dialog.ShowDialog() == DialogResult.OK){
                 Program.RestartWithArgs(dialog.Args);
             }
         }
-        }
 
         #endregion
         #region Browser Cache
@@ -152,6 +163,13 @@ namespace TweetDuck.Core.Other.Settings{
             }
         }
 
+        #endregion
+        #region Development Tools
+
+        private void checkDevToolsWindowOnTop_CheckedChanged(object sender, EventArgs e){
+            Config.DevToolsWindowOnTop = checkDevToolsWindowOnTop.Checked;
+        }
+
         #endregion
     }
 }

Dialogs/Settings/TabSettingsFeedback.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings {
+namespace TweetDuck.Dialogs.Settings {
     partial class TabSettingsFeedback {
         /// <summary> 
         /// Required designer variable.

Dialogs/Settings/TabSettingsFeedback.cs

@@ -1,12 +1,11 @@
 using System;
 using System.Windows.Forms;
-using TweetDuck.Core.Other.Analytics;
-using TweetDuck.Core.Other.Settings.Dialogs;
-using TweetDuck.Core.Utils;
-using TweetDuck.Plugins;
+using TweetDuck.Management.Analytics;
+using TweetDuck.Utils;
+using TweetLib.Core.Features.Plugins;
 
-namespace TweetDuck.Core.Other.Settings{
-    sealed partial class TabSettingsFeedback : BaseTabSettings{
+namespace TweetDuck.Dialogs.Settings{
+    sealed partial class TabSettingsFeedback : FormSettings.BaseTab{
         private readonly AnalyticsFile analyticsFile;
         private readonly AnalyticsReportGenerator.ExternalInfo analyticsInfo;
         private readonly PluginManager plugins;
@@ -24,7 +23,7 @@ namespace TweetDuck.Core.Other.Settings{
 
             if (analytics != null){
                 string collectionTime = analyticsFile.LastCollectionMessage;
-                labelDataCollectionMessage.Text = string.IsNullOrEmpty(collectionTime) ? "No collection yet" : "Last collection: "+collectionTime;
+                labelDataCollectionMessage.Text = string.IsNullOrEmpty(collectionTime) ? "No collection yet" : "Last collection: " + collectionTime;
             }
         }
 
@@ -50,10 +49,9 @@ namespace TweetDuck.Core.Other.Settings{
         }
 
         private void btnViewReport_Click(object sender, EventArgs e){
-            using(DialogSettingsAnalytics dialog = new DialogSettingsAnalytics(AnalyticsReportGenerator.Create(analyticsFile, analyticsInfo, plugins))){
+            using DialogSettingsAnalytics dialog = new DialogSettingsAnalytics(AnalyticsReportGenerator.Create(analyticsFile, analyticsInfo, plugins));
             dialog.ShowDialog();
         }
-        }
 
         #endregion
     }

Dialogs/Settings/TabSettingsGeneral.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings {
+namespace TweetDuck.Dialogs.Settings {
     partial class TabSettingsGeneral {
         /// <summary> 
         /// Required designer variable.
@@ -39,31 +39,39 @@
             this.checkAnimatedAvatars = new System.Windows.Forms.CheckBox();
             this.labelUpdates = new System.Windows.Forms.Label();
             this.flowPanelLeft = new System.Windows.Forms.FlowLayoutPanel();
+            this.checkFocusDmInput = new System.Windows.Forms.CheckBox();
             this.checkKeepLikeFollowDialogsOpen = new System.Windows.Forms.CheckBox();
-            this.labelTray = new System.Windows.Forms.Label();
-            this.comboBoxTrayType = new System.Windows.Forms.ComboBox();
-            this.labelTrayIcon = new System.Windows.Forms.Label();
-            this.checkTrayHighlight = new System.Windows.Forms.CheckBox();
             this.labelBrowserSettings = new System.Windows.Forms.Label();
             this.checkSmoothScrolling = new System.Windows.Forms.CheckBox();
             this.checkTouchAdjustment = new System.Windows.Forms.CheckBox();
+            this.checkHardwareAcceleration = new System.Windows.Forms.CheckBox();
             this.labelBrowserPath = new System.Windows.Forms.Label();
-            this.comboBoxBrowserPath = new System.Windows.Forms.ComboBox();
+            this.comboBoxCustomBrowser = new System.Windows.Forms.ComboBox();
             this.labelSearchEngine = new System.Windows.Forms.Label();
             this.comboBoxSearchEngine = new System.Windows.Forms.ComboBox();
             this.flowPanelRight = new System.Windows.Forms.FlowLayoutPanel();
-            this.checkHardwareAcceleration = new System.Windows.Forms.CheckBox();
             this.labelLocales = new System.Windows.Forms.Label();
             this.checkSpellCheck = new System.Windows.Forms.CheckBox();
             this.labelSpellCheckLanguage = new System.Windows.Forms.Label();
             this.comboBoxSpellCheckLanguage = new System.Windows.Forms.ComboBox();
             this.labelTranslationTarget = new System.Windows.Forms.Label();
             this.comboBoxTranslationTarget = new System.Windows.Forms.ComboBox();
+            this.labelFirstDayOfWeek = new System.Windows.Forms.Label();
+            this.comboBoxFirstDayOfWeek = new System.Windows.Forms.ComboBox();
+            this.labelExternalApplications = new System.Windows.Forms.Label();
+            this.panelCustomBrowser = new System.Windows.Forms.Panel();
+            this.btnCustomBrowserChange = new System.Windows.Forms.Button();
+            this.labelVideoPlayerPath = new System.Windows.Forms.Label();
+            this.panelCustomVideoPlayer = new System.Windows.Forms.Panel();
+            this.comboBoxCustomVideoPlayer = new System.Windows.Forms.ComboBox();
+            this.btnCustomVideoPlayerChange = new System.Windows.Forms.Button();
             this.panelSeparator = new System.Windows.Forms.Panel();
             ((System.ComponentModel.ISupportInitialize)(this.trackBarZoom)).BeginInit();
             this.panelZoom.SuspendLayout();
             this.flowPanelLeft.SuspendLayout();
             this.flowPanelRight.SuspendLayout();
+            this.panelCustomBrowser.SuspendLayout();
+            this.panelCustomVideoPlayer.SuspendLayout();
             this.SuspendLayout();
             // 
             // checkExpandLinks
@@ -82,11 +90,11 @@
             // 
             this.checkUpdateNotifications.AutoSize = true;
             this.checkUpdateNotifications.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkUpdateNotifications.Location = new System.Drawing.Point(6, 393);
+            this.checkUpdateNotifications.Location = new System.Drawing.Point(6, 403);
             this.checkUpdateNotifications.Margin = new System.Windows.Forms.Padding(6, 6, 3, 2);
             this.checkUpdateNotifications.Name = "checkUpdateNotifications";
             this.checkUpdateNotifications.Size = new System.Drawing.Size(182, 19);
-            this.checkUpdateNotifications.TabIndex = 13;
+            this.checkUpdateNotifications.TabIndex = 14;
             this.checkUpdateNotifications.Text = "Check Updates Automatically";
             this.checkUpdateNotifications.UseVisualStyleBackColor = true;
             // 
@@ -94,12 +102,12 @@
             // 
             this.btnCheckUpdates.AutoSize = true;
             this.btnCheckUpdates.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.btnCheckUpdates.Location = new System.Drawing.Point(5, 417);
+            this.btnCheckUpdates.Location = new System.Drawing.Point(5, 427);
             this.btnCheckUpdates.Margin = new System.Windows.Forms.Padding(5, 3, 3, 3);
             this.btnCheckUpdates.Name = "btnCheckUpdates";
             this.btnCheckUpdates.Padding = new System.Windows.Forms.Padding(2, 0, 2, 0);
             this.btnCheckUpdates.Size = new System.Drawing.Size(128, 25);
-            this.btnCheckUpdates.TabIndex = 14;
+            this.btnCheckUpdates.TabIndex = 15;
             this.btnCheckUpdates.Text = "Check Updates Now";
             this.btnCheckUpdates.UseVisualStyleBackColor = true;
             // 
@@ -107,7 +115,7 @@
             // 
             this.labelZoomValue.BackColor = System.Drawing.Color.Transparent;
             this.labelZoomValue.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.labelZoomValue.Location = new System.Drawing.Point(147, 4);
+            this.labelZoomValue.Location = new System.Drawing.Point(176, 4);
             this.labelZoomValue.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
             this.labelZoomValue.Name = "labelZoomValue";
             this.labelZoomValue.Size = new System.Drawing.Size(38, 13);
@@ -119,11 +127,11 @@
             // 
             this.checkBestImageQuality.AutoSize = true;
             this.checkBestImageQuality.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkBestImageQuality.Location = new System.Drawing.Point(6, 98);
+            this.checkBestImageQuality.Location = new System.Drawing.Point(6, 122);
             this.checkBestImageQuality.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
             this.checkBestImageQuality.Name = "checkBestImageQuality";
             this.checkBestImageQuality.Size = new System.Drawing.Size(125, 19);
-            this.checkBestImageQuality.TabIndex = 4;
+            this.checkBestImageQuality.TabIndex = 5;
             this.checkBestImageQuality.Text = "Best Image Quality";
             this.checkBestImageQuality.UseVisualStyleBackColor = true;
             // 
@@ -131,11 +139,11 @@
             // 
             this.checkOpenSearchInFirstColumn.AutoSize = true;
             this.checkOpenSearchInFirstColumn.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkOpenSearchInFirstColumn.Location = new System.Drawing.Point(6, 50);
+            this.checkOpenSearchInFirstColumn.Location = new System.Drawing.Point(6, 74);
             this.checkOpenSearchInFirstColumn.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
             this.checkOpenSearchInFirstColumn.Name = "checkOpenSearchInFirstColumn";
             this.checkOpenSearchInFirstColumn.Size = new System.Drawing.Size(245, 19);
-            this.checkOpenSearchInFirstColumn.TabIndex = 2;
+            this.checkOpenSearchInFirstColumn.TabIndex = 3;
             this.checkOpenSearchInFirstColumn.Text = "Add Search Columns Before First Column";
             this.checkOpenSearchInFirstColumn.UseVisualStyleBackColor = true;
             // 
@@ -148,7 +156,7 @@
             this.trackBarZoom.Maximum = 200;
             this.trackBarZoom.Minimum = 50;
             this.trackBarZoom.Name = "trackBarZoom";
-            this.trackBarZoom.Size = new System.Drawing.Size(148, 30);
+            this.trackBarZoom.Size = new System.Drawing.Size(177, 30);
             this.trackBarZoom.SmallChange = 5;
             this.trackBarZoom.TabIndex = 0;
             this.trackBarZoom.TickFrequency = 25;
@@ -158,11 +166,11 @@
             // 
             this.labelZoom.AutoSize = true;
             this.labelZoom.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
-            this.labelZoom.Location = new System.Drawing.Point(3, 155);
+            this.labelZoom.Location = new System.Drawing.Point(3, 299);
             this.labelZoom.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
             this.labelZoom.Name = "labelZoom";
             this.labelZoom.Size = new System.Drawing.Size(39, 15);
-            this.labelZoom.TabIndex = 6;
+            this.labelZoom.TabIndex = 11;
             this.labelZoom.Text = "Zoom";
             // 
             // zoomUpdateTimer
@@ -185,21 +193,21 @@
             // 
             this.panelZoom.Controls.Add(this.trackBarZoom);
             this.panelZoom.Controls.Add(this.labelZoomValue);
-            this.panelZoom.Location = new System.Drawing.Point(0, 171);
+            this.panelZoom.Location = new System.Drawing.Point(0, 315);
             this.panelZoom.Margin = new System.Windows.Forms.Padding(0, 1, 0, 0);
             this.panelZoom.Name = "panelZoom";
             this.panelZoom.Size = new System.Drawing.Size(300, 35);
-            this.panelZoom.TabIndex = 7;
+            this.panelZoom.TabIndex = 12;
             // 
             // checkAnimatedAvatars
             // 
             this.checkAnimatedAvatars.AutoSize = true;
             this.checkAnimatedAvatars.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkAnimatedAvatars.Location = new System.Drawing.Point(6, 122);
+            this.checkAnimatedAvatars.Location = new System.Drawing.Point(6, 146);
             this.checkAnimatedAvatars.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
             this.checkAnimatedAvatars.Name = "checkAnimatedAvatars";
             this.checkAnimatedAvatars.Size = new System.Drawing.Size(158, 19);
-            this.checkAnimatedAvatars.TabIndex = 5;
+            this.checkAnimatedAvatars.TabIndex = 6;
             this.checkAnimatedAvatars.Text = "Enable Animated Avatars";
             this.checkAnimatedAvatars.UseVisualStyleBackColor = true;
             // 
@@ -207,11 +215,11 @@
             // 
             this.labelUpdates.AutoSize = true;
             this.labelUpdates.Font = new System.Drawing.Font("Segoe UI Semibold", 10.5F, System.Drawing.FontStyle.Bold);
-            this.labelUpdates.Location = new System.Drawing.Point(0, 367);
-            this.labelUpdates.Margin = new System.Windows.Forms.Padding(0, 30, 0, 1);
+            this.labelUpdates.Location = new System.Drawing.Point(0, 377);
+            this.labelUpdates.Margin = new System.Windows.Forms.Padding(0, 27, 0, 1);
             this.labelUpdates.Name = "labelUpdates";
             this.labelUpdates.Size = new System.Drawing.Size(69, 19);
-            this.labelUpdates.TabIndex = 12;
+            this.labelUpdates.TabIndex = 13;
             this.labelUpdates.Text = "UPDATES";
             // 
             // flowPanelLeft
@@ -220,16 +228,17 @@
             | System.Windows.Forms.AnchorStyles.Left)));
             this.flowPanelLeft.Controls.Add(this.labelUI);
             this.flowPanelLeft.Controls.Add(this.checkExpandLinks);
+            this.flowPanelLeft.Controls.Add(this.checkFocusDmInput);
             this.flowPanelLeft.Controls.Add(this.checkOpenSearchInFirstColumn);
             this.flowPanelLeft.Controls.Add(this.checkKeepLikeFollowDialogsOpen);
             this.flowPanelLeft.Controls.Add(this.checkBestImageQuality);
             this.flowPanelLeft.Controls.Add(this.checkAnimatedAvatars);
+            this.flowPanelLeft.Controls.Add(this.labelBrowserSettings);
+            this.flowPanelLeft.Controls.Add(this.checkSmoothScrolling);
+            this.flowPanelLeft.Controls.Add(this.checkTouchAdjustment);
+            this.flowPanelLeft.Controls.Add(this.checkHardwareAcceleration);
             this.flowPanelLeft.Controls.Add(this.labelZoom);
             this.flowPanelLeft.Controls.Add(this.panelZoom);
-            this.flowPanelLeft.Controls.Add(this.labelTray);
-            this.flowPanelLeft.Controls.Add(this.comboBoxTrayType);
-            this.flowPanelLeft.Controls.Add(this.labelTrayIcon);
-            this.flowPanelLeft.Controls.Add(this.checkTrayHighlight);
             this.flowPanelLeft.Controls.Add(this.labelUpdates);
             this.flowPanelLeft.Controls.Add(this.checkUpdateNotifications);
             this.flowPanelLeft.Controls.Add(this.btnCheckUpdates);
@@ -240,83 +249,50 @@
             this.flowPanelLeft.TabIndex = 0;
             this.flowPanelLeft.WrapContents = false;
             // 
+            // checkFocusDmInput
+            // 
+            this.checkFocusDmInput.AutoSize = true;
+            this.checkFocusDmInput.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.checkFocusDmInput.Location = new System.Drawing.Point(6, 50);
+            this.checkFocusDmInput.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
+            this.checkFocusDmInput.Name = "checkFocusDmInput";
+            this.checkFocusDmInput.Size = new System.Drawing.Size(282, 19);
+            this.checkFocusDmInput.TabIndex = 2;
+            this.checkFocusDmInput.Text = "Focus Input Field When Opening Direct Message";
+            this.checkFocusDmInput.UseVisualStyleBackColor = true;
+            // 
             // checkKeepLikeFollowDialogsOpen
             // 
             this.checkKeepLikeFollowDialogsOpen.AutoSize = true;
             this.checkKeepLikeFollowDialogsOpen.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkKeepLikeFollowDialogsOpen.Location = new System.Drawing.Point(6, 74);
+            this.checkKeepLikeFollowDialogsOpen.Location = new System.Drawing.Point(6, 98);
             this.checkKeepLikeFollowDialogsOpen.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
             this.checkKeepLikeFollowDialogsOpen.Name = "checkKeepLikeFollowDialogsOpen";
             this.checkKeepLikeFollowDialogsOpen.Size = new System.Drawing.Size(190, 19);
-            this.checkKeepLikeFollowDialogsOpen.TabIndex = 3;
+            this.checkKeepLikeFollowDialogsOpen.TabIndex = 4;
             this.checkKeepLikeFollowDialogsOpen.Text = "Keep Like/Follow Dialogs Open";
             this.checkKeepLikeFollowDialogsOpen.UseVisualStyleBackColor = true;
             // 
-            // labelTray
-            // 
-            this.labelTray.AutoSize = true;
-            this.labelTray.Font = new System.Drawing.Font("Segoe UI Semibold", 10.5F, System.Drawing.FontStyle.Bold);
-            this.labelTray.Location = new System.Drawing.Point(0, 236);
-            this.labelTray.Margin = new System.Windows.Forms.Padding(0, 30, 0, 1);
-            this.labelTray.Name = "labelTray";
-            this.labelTray.Size = new System.Drawing.Size(99, 19);
-            this.labelTray.TabIndex = 8;
-            this.labelTray.Text = "SYSTEM TRAY";
-            // 
-            // comboBoxTrayType
-            // 
-            this.comboBoxTrayType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
-            this.comboBoxTrayType.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.comboBoxTrayType.FormattingEnabled = true;
-            this.comboBoxTrayType.Location = new System.Drawing.Point(5, 260);
-            this.comboBoxTrayType.Margin = new System.Windows.Forms.Padding(5, 4, 3, 3);
-            this.comboBoxTrayType.Name = "comboBoxTrayType";
-            this.comboBoxTrayType.Size = new System.Drawing.Size(144, 23);
-            this.comboBoxTrayType.TabIndex = 9;
-            // 
-            // labelTrayIcon
-            // 
-            this.labelTrayIcon.AutoSize = true;
-            this.labelTrayIcon.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
-            this.labelTrayIcon.Location = new System.Drawing.Point(3, 295);
-            this.labelTrayIcon.Margin = new System.Windows.Forms.Padding(3, 9, 3, 0);
-            this.labelTrayIcon.Name = "labelTrayIcon";
-            this.labelTrayIcon.Size = new System.Drawing.Size(56, 15);
-            this.labelTrayIcon.TabIndex = 10;
-            this.labelTrayIcon.Text = "Tray Icon";
-            // 
-            // checkTrayHighlight
-            // 
-            this.checkTrayHighlight.AutoSize = true;
-            this.checkTrayHighlight.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkTrayHighlight.Location = new System.Drawing.Point(6, 316);
-            this.checkTrayHighlight.Margin = new System.Windows.Forms.Padding(6, 6, 3, 2);
-            this.checkTrayHighlight.Name = "checkTrayHighlight";
-            this.checkTrayHighlight.Size = new System.Drawing.Size(114, 19);
-            this.checkTrayHighlight.TabIndex = 11;
-            this.checkTrayHighlight.Text = "Enable Highlight";
-            this.checkTrayHighlight.UseVisualStyleBackColor = true;
-            // 
             // labelBrowserSettings
             // 
             this.labelBrowserSettings.AutoSize = true;
             this.labelBrowserSettings.Font = new System.Drawing.Font("Segoe UI Semibold", 10.5F, System.Drawing.FontStyle.Bold);
-            this.labelBrowserSettings.Location = new System.Drawing.Point(0, 0);
-            this.labelBrowserSettings.Margin = new System.Windows.Forms.Padding(0, 0, 0, 1);
+            this.labelBrowserSettings.Location = new System.Drawing.Point(0, 192);
+            this.labelBrowserSettings.Margin = new System.Windows.Forms.Padding(0, 25, 0, 1);
             this.labelBrowserSettings.Name = "labelBrowserSettings";
             this.labelBrowserSettings.Size = new System.Drawing.Size(143, 19);
-            this.labelBrowserSettings.TabIndex = 0;
+            this.labelBrowserSettings.TabIndex = 7;
             this.labelBrowserSettings.Text = "BROWSER SETTINGS";
             // 
             // checkSmoothScrolling
             // 
             this.checkSmoothScrolling.AutoSize = true;
             this.checkSmoothScrolling.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkSmoothScrolling.Location = new System.Drawing.Point(6, 26);
+            this.checkSmoothScrolling.Location = new System.Drawing.Point(6, 218);
             this.checkSmoothScrolling.Margin = new System.Windows.Forms.Padding(6, 6, 3, 2);
             this.checkSmoothScrolling.Name = "checkSmoothScrolling";
             this.checkSmoothScrolling.Size = new System.Drawing.Size(117, 19);
-            this.checkSmoothScrolling.TabIndex = 1;
+            this.checkSmoothScrolling.TabIndex = 8;
             this.checkSmoothScrolling.Text = "Smooth Scrolling";
             this.checkSmoothScrolling.UseVisualStyleBackColor = true;
             // 
@@ -324,45 +300,57 @@
             // 
             this.checkTouchAdjustment.AutoSize = true;
             this.checkTouchAdjustment.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkTouchAdjustment.Location = new System.Drawing.Point(6, 50);
+            this.checkTouchAdjustment.Location = new System.Drawing.Point(6, 242);
             this.checkTouchAdjustment.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
             this.checkTouchAdjustment.Name = "checkTouchAdjustment";
             this.checkTouchAdjustment.Size = new System.Drawing.Size(163, 19);
-            this.checkTouchAdjustment.TabIndex = 2;
+            this.checkTouchAdjustment.TabIndex = 9;
             this.checkTouchAdjustment.Text = "Touch Screen Adjustment";
             this.checkTouchAdjustment.UseVisualStyleBackColor = true;
             // 
+            // checkHardwareAcceleration
+            // 
+            this.checkHardwareAcceleration.AutoSize = true;
+            this.checkHardwareAcceleration.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.checkHardwareAcceleration.Location = new System.Drawing.Point(6, 266);
+            this.checkHardwareAcceleration.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
+            this.checkHardwareAcceleration.Name = "checkHardwareAcceleration";
+            this.checkHardwareAcceleration.Size = new System.Drawing.Size(146, 19);
+            this.checkHardwareAcceleration.TabIndex = 10;
+            this.checkHardwareAcceleration.Text = "Hardware Acceleration";
+            this.checkHardwareAcceleration.UseVisualStyleBackColor = true;
+            // 
             // labelBrowserPath
             // 
             this.labelBrowserPath.AutoSize = true;
             this.labelBrowserPath.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
-            this.labelBrowserPath.Location = new System.Drawing.Point(3, 107);
+            this.labelBrowserPath.Location = new System.Drawing.Point(3, 275);
             this.labelBrowserPath.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
             this.labelBrowserPath.Name = "labelBrowserPath";
             this.labelBrowserPath.Size = new System.Drawing.Size(104, 15);
-            this.labelBrowserPath.TabIndex = 4;
+            this.labelBrowserPath.TabIndex = 9;
             this.labelBrowserPath.Text = "Open Links With...";
             // 
-            // comboBoxBrowserPath
+            // comboBoxCustomBrowser
             // 
-            this.comboBoxBrowserPath.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
-            this.comboBoxBrowserPath.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.comboBoxBrowserPath.FormattingEnabled = true;
-            this.comboBoxBrowserPath.Location = new System.Drawing.Point(5, 126);
-            this.comboBoxBrowserPath.Margin = new System.Windows.Forms.Padding(5, 4, 3, 3);
-            this.comboBoxBrowserPath.Name = "comboBoxBrowserPath";
-            this.comboBoxBrowserPath.Size = new System.Drawing.Size(173, 23);
-            this.comboBoxBrowserPath.TabIndex = 5;
+            this.comboBoxCustomBrowser.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxCustomBrowser.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.comboBoxCustomBrowser.FormattingEnabled = true;
+            this.comboBoxCustomBrowser.Location = new System.Drawing.Point(5, 1);
+            this.comboBoxCustomBrowser.Margin = new System.Windows.Forms.Padding(5, 1, 3, 0);
+            this.comboBoxCustomBrowser.Name = "comboBoxCustomBrowser";
+            this.comboBoxCustomBrowser.Size = new System.Drawing.Size(173, 23);
+            this.comboBoxCustomBrowser.TabIndex = 0;
             // 
             // labelSearchEngine
             // 
             this.labelSearchEngine.AutoSize = true;
             this.labelSearchEngine.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
-            this.labelSearchEngine.Location = new System.Drawing.Point(3, 164);
+            this.labelSearchEngine.Location = new System.Drawing.Point(3, 389);
             this.labelSearchEngine.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
             this.labelSearchEngine.Name = "labelSearchEngine";
             this.labelSearchEngine.Size = new System.Drawing.Size(82, 15);
-            this.labelSearchEngine.TabIndex = 6;
+            this.labelSearchEngine.TabIndex = 13;
             this.labelSearchEngine.Text = "Search Engine";
             // 
             // comboBoxSearchEngine
@@ -370,30 +358,31 @@
             this.comboBoxSearchEngine.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
             this.comboBoxSearchEngine.Font = new System.Drawing.Font("Segoe UI", 9F);
             this.comboBoxSearchEngine.FormattingEnabled = true;
-            this.comboBoxSearchEngine.Location = new System.Drawing.Point(5, 183);
+            this.comboBoxSearchEngine.Location = new System.Drawing.Point(5, 408);
             this.comboBoxSearchEngine.Margin = new System.Windows.Forms.Padding(5, 4, 3, 3);
             this.comboBoxSearchEngine.Name = "comboBoxSearchEngine";
             this.comboBoxSearchEngine.Size = new System.Drawing.Size(173, 23);
-            this.comboBoxSearchEngine.TabIndex = 7;
+            this.comboBoxSearchEngine.TabIndex = 14;
             // 
             // flowPanelRight
             // 
             this.flowPanelRight.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
             | System.Windows.Forms.AnchorStyles.Left)));
-            this.flowPanelRight.Controls.Add(this.labelBrowserSettings);
-            this.flowPanelRight.Controls.Add(this.checkSmoothScrolling);
-            this.flowPanelRight.Controls.Add(this.checkTouchAdjustment);
-            this.flowPanelRight.Controls.Add(this.checkHardwareAcceleration);
-            this.flowPanelRight.Controls.Add(this.labelBrowserPath);
-            this.flowPanelRight.Controls.Add(this.comboBoxBrowserPath);
-            this.flowPanelRight.Controls.Add(this.labelSearchEngine);
-            this.flowPanelRight.Controls.Add(this.comboBoxSearchEngine);
             this.flowPanelRight.Controls.Add(this.labelLocales);
             this.flowPanelRight.Controls.Add(this.checkSpellCheck);
             this.flowPanelRight.Controls.Add(this.labelSpellCheckLanguage);
             this.flowPanelRight.Controls.Add(this.comboBoxSpellCheckLanguage);
             this.flowPanelRight.Controls.Add(this.labelTranslationTarget);
             this.flowPanelRight.Controls.Add(this.comboBoxTranslationTarget);
+            this.flowPanelRight.Controls.Add(this.labelFirstDayOfWeek);
+            this.flowPanelRight.Controls.Add(this.comboBoxFirstDayOfWeek);
+            this.flowPanelRight.Controls.Add(this.labelExternalApplications);
+            this.flowPanelRight.Controls.Add(this.labelBrowserPath);
+            this.flowPanelRight.Controls.Add(this.panelCustomBrowser);
+            this.flowPanelRight.Controls.Add(this.labelVideoPlayerPath);
+            this.flowPanelRight.Controls.Add(this.panelCustomVideoPlayer);
+            this.flowPanelRight.Controls.Add(this.labelSearchEngine);
+            this.flowPanelRight.Controls.Add(this.comboBoxSearchEngine);
             this.flowPanelRight.FlowDirection = System.Windows.Forms.FlowDirection.TopDown;
             this.flowPanelRight.Location = new System.Drawing.Point(322, 9);
             this.flowPanelRight.Name = "flowPanelRight";
@@ -401,38 +390,26 @@
             this.flowPanelRight.TabIndex = 1;
             this.flowPanelRight.WrapContents = false;
             // 
-            // checkHardwareAcceleration
-            // 
-            this.checkHardwareAcceleration.AutoSize = true;
-            this.checkHardwareAcceleration.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkHardwareAcceleration.Location = new System.Drawing.Point(6, 74);
-            this.checkHardwareAcceleration.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
-            this.checkHardwareAcceleration.Name = "checkHardwareAcceleration";
-            this.checkHardwareAcceleration.Size = new System.Drawing.Size(146, 19);
-            this.checkHardwareAcceleration.TabIndex = 3;
-            this.checkHardwareAcceleration.Text = "Hardware Acceleration";
-            this.checkHardwareAcceleration.UseVisualStyleBackColor = true;
-            // 
             // labelLocales
             // 
             this.labelLocales.AutoSize = true;
             this.labelLocales.Font = new System.Drawing.Font("Segoe UI Semibold", 10.5F, System.Drawing.FontStyle.Bold);
-            this.labelLocales.Location = new System.Drawing.Point(0, 236);
-            this.labelLocales.Margin = new System.Windows.Forms.Padding(0, 27, 0, 1);
+            this.labelLocales.Location = new System.Drawing.Point(0, 0);
+            this.labelLocales.Margin = new System.Windows.Forms.Padding(0, 0, 0, 1);
             this.labelLocales.Name = "labelLocales";
             this.labelLocales.Size = new System.Drawing.Size(67, 19);
-            this.labelLocales.TabIndex = 8;
+            this.labelLocales.TabIndex = 0;
             this.labelLocales.Text = "LOCALES";
             // 
             // checkSpellCheck
             // 
             this.checkSpellCheck.AutoSize = true;
             this.checkSpellCheck.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkSpellCheck.Location = new System.Drawing.Point(6, 262);
+            this.checkSpellCheck.Location = new System.Drawing.Point(6, 26);
             this.checkSpellCheck.Margin = new System.Windows.Forms.Padding(6, 6, 3, 2);
             this.checkSpellCheck.Name = "checkSpellCheck";
             this.checkSpellCheck.Size = new System.Drawing.Size(125, 19);
-            this.checkSpellCheck.TabIndex = 9;
+            this.checkSpellCheck.TabIndex = 1;
             this.checkSpellCheck.Text = "Enable Spell Check";
             this.checkSpellCheck.UseVisualStyleBackColor = true;
             // 
@@ -440,11 +417,11 @@
             // 
             this.labelSpellCheckLanguage.AutoSize = true;
             this.labelSpellCheckLanguage.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
-            this.labelSpellCheckLanguage.Location = new System.Drawing.Point(3, 295);
+            this.labelSpellCheckLanguage.Location = new System.Drawing.Point(3, 59);
             this.labelSpellCheckLanguage.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
             this.labelSpellCheckLanguage.Name = "labelSpellCheckLanguage";
             this.labelSpellCheckLanguage.Size = new System.Drawing.Size(123, 15);
-            this.labelSpellCheckLanguage.TabIndex = 10;
+            this.labelSpellCheckLanguage.TabIndex = 2;
             this.labelSpellCheckLanguage.Text = "Spell Check Language";
             // 
             // comboBoxSpellCheckLanguage
@@ -452,21 +429,21 @@
             this.comboBoxSpellCheckLanguage.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
             this.comboBoxSpellCheckLanguage.Font = new System.Drawing.Font("Segoe UI", 9F);
             this.comboBoxSpellCheckLanguage.FormattingEnabled = true;
-            this.comboBoxSpellCheckLanguage.Location = new System.Drawing.Point(5, 314);
+            this.comboBoxSpellCheckLanguage.Location = new System.Drawing.Point(5, 78);
             this.comboBoxSpellCheckLanguage.Margin = new System.Windows.Forms.Padding(5, 4, 3, 3);
             this.comboBoxSpellCheckLanguage.Name = "comboBoxSpellCheckLanguage";
             this.comboBoxSpellCheckLanguage.Size = new System.Drawing.Size(290, 23);
-            this.comboBoxSpellCheckLanguage.TabIndex = 11;
+            this.comboBoxSpellCheckLanguage.TabIndex = 3;
             // 
             // labelTranslationTarget
             // 
             this.labelTranslationTarget.AutoSize = true;
             this.labelTranslationTarget.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
-            this.labelTranslationTarget.Location = new System.Drawing.Point(3, 352);
+            this.labelTranslationTarget.Location = new System.Drawing.Point(3, 116);
             this.labelTranslationTarget.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
             this.labelTranslationTarget.Name = "labelTranslationTarget";
             this.labelTranslationTarget.Size = new System.Drawing.Size(142, 15);
-            this.labelTranslationTarget.TabIndex = 12;
+            this.labelTranslationTarget.TabIndex = 4;
             this.labelTranslationTarget.Text = "Bing Translator Language";
             // 
             // comboBoxTranslationTarget
@@ -474,11 +451,114 @@
             this.comboBoxTranslationTarget.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
             this.comboBoxTranslationTarget.Font = new System.Drawing.Font("Segoe UI", 9F);
             this.comboBoxTranslationTarget.FormattingEnabled = true;
-            this.comboBoxTranslationTarget.Location = new System.Drawing.Point(5, 371);
+            this.comboBoxTranslationTarget.Location = new System.Drawing.Point(5, 135);
             this.comboBoxTranslationTarget.Margin = new System.Windows.Forms.Padding(5, 4, 3, 3);
             this.comboBoxTranslationTarget.Name = "comboBoxTranslationTarget";
             this.comboBoxTranslationTarget.Size = new System.Drawing.Size(290, 23);
-            this.comboBoxTranslationTarget.TabIndex = 13;
+            this.comboBoxTranslationTarget.TabIndex = 5;
+            // 
+            // labelFirstDayOfWeek
+            // 
+            this.labelFirstDayOfWeek.AutoSize = true;
+            this.labelFirstDayOfWeek.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
+            this.labelFirstDayOfWeek.Location = new System.Drawing.Point(3, 173);
+            this.labelFirstDayOfWeek.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
+            this.labelFirstDayOfWeek.Name = "labelFirstDayOfWeek";
+            this.labelFirstDayOfWeek.Size = new System.Drawing.Size(125, 15);
+            this.labelFirstDayOfWeek.TabIndex = 6;
+            this.labelFirstDayOfWeek.Text = "First Day Of The Week";
+            // 
+            // comboBoxFirstDayOfWeek
+            // 
+            this.comboBoxFirstDayOfWeek.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxFirstDayOfWeek.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.comboBoxFirstDayOfWeek.FormattingEnabled = true;
+            this.comboBoxFirstDayOfWeek.Location = new System.Drawing.Point(5, 192);
+            this.comboBoxFirstDayOfWeek.Margin = new System.Windows.Forms.Padding(5, 4, 3, 3);
+            this.comboBoxFirstDayOfWeek.Name = "comboBoxFirstDayOfWeek";
+            this.comboBoxFirstDayOfWeek.Size = new System.Drawing.Size(173, 23);
+            this.comboBoxFirstDayOfWeek.TabIndex = 7;
+            // 
+            // labelExternalApplications
+            // 
+            this.labelExternalApplications.AutoSize = true;
+            this.labelExternalApplications.Font = new System.Drawing.Font("Segoe UI Semibold", 10.5F, System.Drawing.FontStyle.Bold);
+            this.labelExternalApplications.Location = new System.Drawing.Point(0, 243);
+            this.labelExternalApplications.Margin = new System.Windows.Forms.Padding(0, 25, 0, 1);
+            this.labelExternalApplications.Name = "labelExternalApplications";
+            this.labelExternalApplications.Size = new System.Drawing.Size(176, 19);
+            this.labelExternalApplications.TabIndex = 8;
+            this.labelExternalApplications.Text = "EXTERNAL APPLICATIONS";
+            // 
+            // panelCustomBrowser
+            // 
+            this.panelCustomBrowser.Controls.Add(this.comboBoxCustomBrowser);
+            this.panelCustomBrowser.Controls.Add(this.btnCustomBrowserChange);
+            this.panelCustomBrowser.Location = new System.Drawing.Point(0, 293);
+            this.panelCustomBrowser.Margin = new System.Windows.Forms.Padding(0, 3, 0, 3);
+            this.panelCustomBrowser.Name = "panelCustomBrowser";
+            this.panelCustomBrowser.Size = new System.Drawing.Size(300, 24);
+            this.panelCustomBrowser.TabIndex = 10;
+            // 
+            // btnCustomBrowserChange
+            // 
+            this.btnCustomBrowserChange.AutoSize = true;
+            this.btnCustomBrowserChange.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.btnCustomBrowserChange.Location = new System.Drawing.Point(186, 0);
+            this.btnCustomBrowserChange.Margin = new System.Windows.Forms.Padding(5, 0, 3, 0);
+            this.btnCustomBrowserChange.Name = "btnCustomBrowserChange";
+            this.btnCustomBrowserChange.Padding = new System.Windows.Forms.Padding(2, 0, 2, 0);
+            this.btnCustomBrowserChange.Size = new System.Drawing.Size(71, 25);
+            this.btnCustomBrowserChange.TabIndex = 1;
+            this.btnCustomBrowserChange.Text = "Change...";
+            this.btnCustomBrowserChange.UseVisualStyleBackColor = true;
+            this.btnCustomBrowserChange.Visible = false;
+            // 
+            // labelVideoPlayerPath
+            // 
+            this.labelVideoPlayerPath.AutoSize = true;
+            this.labelVideoPlayerPath.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
+            this.labelVideoPlayerPath.Location = new System.Drawing.Point(3, 332);
+            this.labelVideoPlayerPath.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
+            this.labelVideoPlayerPath.Name = "labelVideoPlayerPath";
+            this.labelVideoPlayerPath.Size = new System.Drawing.Size(106, 15);
+            this.labelVideoPlayerPath.TabIndex = 11;
+            this.labelVideoPlayerPath.Text = "Play Videos With...";
+            // 
+            // panelCustomVideoPlayer
+            // 
+            this.panelCustomVideoPlayer.Controls.Add(this.comboBoxCustomVideoPlayer);
+            this.panelCustomVideoPlayer.Controls.Add(this.btnCustomVideoPlayerChange);
+            this.panelCustomVideoPlayer.Location = new System.Drawing.Point(0, 350);
+            this.panelCustomVideoPlayer.Margin = new System.Windows.Forms.Padding(0, 3, 0, 3);
+            this.panelCustomVideoPlayer.Name = "panelCustomVideoPlayer";
+            this.panelCustomVideoPlayer.Size = new System.Drawing.Size(300, 24);
+            this.panelCustomVideoPlayer.TabIndex = 12;
+            // 
+            // comboBoxCustomVideoPlayer
+            // 
+            this.comboBoxCustomVideoPlayer.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.comboBoxCustomVideoPlayer.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.comboBoxCustomVideoPlayer.FormattingEnabled = true;
+            this.comboBoxCustomVideoPlayer.Location = new System.Drawing.Point(5, 1);
+            this.comboBoxCustomVideoPlayer.Margin = new System.Windows.Forms.Padding(5, 1, 3, 0);
+            this.comboBoxCustomVideoPlayer.Name = "comboBoxCustomVideoPlayer";
+            this.comboBoxCustomVideoPlayer.Size = new System.Drawing.Size(173, 23);
+            this.comboBoxCustomVideoPlayer.TabIndex = 0;
+            // 
+            // btnCustomVideoPlayerChange
+            // 
+            this.btnCustomVideoPlayerChange.AutoSize = true;
+            this.btnCustomVideoPlayerChange.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.btnCustomVideoPlayerChange.Location = new System.Drawing.Point(186, 0);
+            this.btnCustomVideoPlayerChange.Margin = new System.Windows.Forms.Padding(5, 0, 3, 0);
+            this.btnCustomVideoPlayerChange.Name = "btnCustomVideoPlayerChange";
+            this.btnCustomVideoPlayerChange.Padding = new System.Windows.Forms.Padding(2, 0, 2, 0);
+            this.btnCustomVideoPlayerChange.Size = new System.Drawing.Size(71, 25);
+            this.btnCustomVideoPlayerChange.TabIndex = 1;
+            this.btnCustomVideoPlayerChange.Text = "Change...";
+            this.btnCustomVideoPlayerChange.UseVisualStyleBackColor = true;
+            this.btnCustomVideoPlayerChange.Visible = false;
             // 
             // panelSeparator
             // 
@@ -506,6 +586,10 @@
             this.flowPanelLeft.PerformLayout();
             this.flowPanelRight.ResumeLayout(false);
             this.flowPanelRight.PerformLayout();
+            this.panelCustomBrowser.ResumeLayout(false);
+            this.panelCustomBrowser.PerformLayout();
+            this.panelCustomVideoPlayer.ResumeLayout(false);
+            this.panelCustomVideoPlayer.PerformLayout();
             this.ResumeLayout(false);
 
         }
@@ -529,7 +613,7 @@
         private System.Windows.Forms.FlowLayoutPanel flowPanelLeft;
         private System.Windows.Forms.CheckBox checkKeepLikeFollowDialogsOpen;
         private System.Windows.Forms.Label labelBrowserPath;
-        private System.Windows.Forms.ComboBox comboBoxBrowserPath;
+        private System.Windows.Forms.ComboBox comboBoxCustomBrowser;
         private System.Windows.Forms.Label labelBrowserSettings;
         private System.Windows.Forms.CheckBox checkSmoothScrolling;
         private System.Windows.Forms.Label labelSearchEngine;
@@ -537,10 +621,6 @@
         private System.Windows.Forms.CheckBox checkTouchAdjustment;
         private System.Windows.Forms.FlowLayoutPanel flowPanelRight;
         private System.Windows.Forms.Panel panelSeparator;
-        private System.Windows.Forms.Label labelTray;
-        private System.Windows.Forms.ComboBox comboBoxTrayType;
-        private System.Windows.Forms.Label labelTrayIcon;
-        private System.Windows.Forms.CheckBox checkTrayHighlight;
         private System.Windows.Forms.Label labelLocales;
         private System.Windows.Forms.CheckBox checkSpellCheck;
         private System.Windows.Forms.Label labelSpellCheckLanguage;
@@ -548,5 +628,15 @@
         private System.Windows.Forms.Label labelTranslationTarget;
         private System.Windows.Forms.ComboBox comboBoxTranslationTarget;
         private System.Windows.Forms.CheckBox checkHardwareAcceleration;
+        private System.Windows.Forms.CheckBox checkFocusDmInput;
+        private System.Windows.Forms.Panel panelCustomBrowser;
+        private System.Windows.Forms.Button btnCustomBrowserChange;
+        private System.Windows.Forms.Label labelVideoPlayerPath;
+        private System.Windows.Forms.Panel panelCustomVideoPlayer;
+        private System.Windows.Forms.ComboBox comboBoxCustomVideoPlayer;
+        private System.Windows.Forms.Button btnCustomVideoPlayerChange;
+        private System.Windows.Forms.Label labelExternalApplications;
+        private System.Windows.Forms.Label labelFirstDayOfWeek;
+        private System.Windows.Forms.ComboBox comboBoxFirstDayOfWeek;
     }
 }

Dialogs/Settings/TabSettingsGeneral.cs

@@ -2,14 +2,14 @@
 using System.IO;
 using System.Linq;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Handling.General;
-using TweetDuck.Core.Other.Settings.Dialogs;
-using TweetDuck.Core.Utils;
-using TweetDuck.Updates;
+using TweetDuck.Browser.Handling.General;
+using TweetDuck.Controls;
+using TweetDuck.Utils;
+using TweetLib.Core.Systems.Updates;
+using TweetLib.Core.Utils;
 
-namespace TweetDuck.Core.Other.Settings{
-    sealed partial class TabSettingsGeneral : BaseTabSettings{
+namespace TweetDuck.Dialogs.Settings{
+    sealed partial class TabSettingsGeneral : FormSettings.BaseTab{
         private readonly Action reloadColumns;
 
         private readonly UpdateHandler updates;
@@ -18,6 +18,9 @@ namespace TweetDuck.Core.Other.Settings{
         private readonly int browserListIndexDefault;
         private readonly int browserListIndexCustom;
 
+        private readonly int videoPlayerListIndexDefault;
+        private readonly int videoPlayerListIndexCustom;
+
         private readonly int searchEngineIndexDefault;
         private readonly int searchEngineIndexCustom;
 
@@ -34,6 +37,7 @@ namespace TweetDuck.Core.Other.Settings{
             // user interface
 
             toolTip.SetToolTip(checkExpandLinks, "Expands links inside the tweets. If disabled,\r\nthe full links show up in a tooltip instead.");
+            toolTip.SetToolTip(checkFocusDmInput, "Places cursor into Direct Message input\r\nfield when opening a conversation.");
             toolTip.SetToolTip(checkOpenSearchInFirstColumn, "By default, TweetDeck adds Search columns at the end.\r\nThis option makes them appear before the first column instead.");
             toolTip.SetToolTip(checkKeepLikeFollowDialogsOpen, "Allows liking and following from multiple accounts at once,\r\ninstead of automatically closing the dialog after taking an action.");
             toolTip.SetToolTip(checkBestImageQuality, "When right-clicking a tweet image, the context menu options\r\nwill use links to the original image size (:orig in the URL).");
@@ -42,28 +46,14 @@ namespace TweetDuck.Core.Other.Settings{
             toolTip.SetToolTip(trackBarZoom, toolTip.GetToolTip(labelZoomValue));
 
             checkExpandLinks.Checked = Config.ExpandLinksOnHover;
+            checkFocusDmInput.Checked = Config.FocusDmInput;
             checkOpenSearchInFirstColumn.Checked = Config.OpenSearchInFirstColumn;
             checkKeepLikeFollowDialogsOpen.Checked = Config.KeepLikeFollowDialogsOpen;
             checkBestImageQuality.Checked = Config.BestImageQuality;
             checkAnimatedAvatars.Checked = Config.EnableAnimatedImages;
             
             trackBarZoom.SetValueSafe(Config.ZoomLevel);
-            labelZoomValue.Text = trackBarZoom.Value+"%";
-
-            // system tray
-            
-            toolTip.SetToolTip(comboBoxTrayType, "Changes behavior of the Tray icon.\r\nRight-click the icon for an action menu.");
-            toolTip.SetToolTip(checkTrayHighlight, "Highlights the tray icon if there are new tweets.\r\nOnly works for columns with popup or audio notifications.\r\nThe icon resets when the main window is restored.");
-
-            comboBoxTrayType.Items.Add("Disabled");
-            comboBoxTrayType.Items.Add("Display Icon Only");
-            comboBoxTrayType.Items.Add("Minimize to Tray");
-            comboBoxTrayType.Items.Add("Close to Tray");
-            comboBoxTrayType.Items.Add("Combined");
-            comboBoxTrayType.SelectedIndex = Math.Min(Math.Max((int)Config.TrayBehavior, 0), comboBoxTrayType.Items.Count-1);
-
-            checkTrayHighlight.Enabled = Config.TrayBehavior.ShouldDisplayIcon();
-            checkTrayHighlight.Checked = Config.EnableTrayHighlight;
+            labelZoomValue.Text = trackBarZoom.Value + "%";
 
             // updates
             
@@ -77,7 +67,8 @@ namespace TweetDuck.Core.Other.Settings{
             toolTip.SetToolTip(checkSmoothScrolling, "Toggles smooth mouse wheel scrolling.");
             toolTip.SetToolTip(checkTouchAdjustment, "Toggles Chromium touch screen adjustment.\r\nDisabled by default, because it is very imprecise with TweetDeck.");
             toolTip.SetToolTip(checkHardwareAcceleration, "Uses graphics card to improve performance.\r\nDisable if you experience visual glitches, or to save a small amount of RAM.");
-            toolTip.SetToolTip(comboBoxBrowserPath, "Sets the default browser for opening links.");
+            toolTip.SetToolTip(comboBoxCustomBrowser, "Sets the default browser for opening links.");
+            toolTip.SetToolTip(comboBoxCustomVideoPlayer, "Sets the default application for playing videos.");
             toolTip.SetToolTip(comboBoxSearchEngine, "Sets the default website for opening searches.");
             
             checkSmoothScrolling.Checked = Config.EnableSmoothScrolling;
@@ -85,13 +76,17 @@ namespace TweetDuck.Core.Other.Settings{
             checkHardwareAcceleration.Checked = SysConfig.HardwareAcceleration;
 
             foreach(WindowsUtils.Browser browserInfo in WindowsUtils.FindInstalledBrowsers()){
-                comboBoxBrowserPath.Items.Add(browserInfo);
+                comboBoxCustomBrowser.Items.Add(browserInfo);
             }
             
-            browserListIndexDefault = comboBoxBrowserPath.Items.Add("(default browser)");
-            browserListIndexCustom = comboBoxBrowserPath.Items.Add("(custom program...)");
+            browserListIndexDefault = comboBoxCustomBrowser.Items.Add("(default browser)");
+            browserListIndexCustom = comboBoxCustomBrowser.Items.Add("(custom program...)");
             UpdateBrowserPathSelection();
 
+            videoPlayerListIndexDefault = comboBoxCustomVideoPlayer.Items.Add("(default TweetDuck player)");
+            videoPlayerListIndexCustom = comboBoxCustomVideoPlayer.Items.Add("(custom program...)");
+            UpdateVideoPlayerPathSelection();
+
             comboBoxSearchEngine.Items.Add(new SearchEngine("DuckDuckGo", "https://duckduckgo.com/?q="));
             comboBoxSearchEngine.Items.Add(new SearchEngine("Google", "https://www.google.com/search?q="));
             comboBoxSearchEngine.Items.Add(new SearchEngine("Bing", "https://www.bing.com/search?q="));
@@ -105,6 +100,7 @@ namespace TweetDuck.Core.Other.Settings{
             toolTip.SetToolTip(checkSpellCheck, "Underlines words that are spelled incorrectly.");
             toolTip.SetToolTip(comboBoxSpellCheckLanguage, "Language used for spell check.");
             toolTip.SetToolTip(comboBoxTranslationTarget, "Language tweets are translated into.");
+            toolTip.SetToolTip(comboBoxFirstDayOfWeek, "First day of week used in the date picker.");
             
             checkSpellCheck.Checked = Config.EnableSpellCheck;
 
@@ -123,31 +119,44 @@ namespace TweetDuck.Core.Other.Settings{
             }
 
             comboBoxTranslationTarget.SelectedItem = new LocaleUtils.Item(Config.TranslationTarget);
+
+            var daysOfWeek = comboBoxFirstDayOfWeek.Items;
+            daysOfWeek.Add("(based on system locale)");
+            daysOfWeek.Add(new DayOfWeekItem("Monday", DayOfWeek.Monday));
+            daysOfWeek.Add(new DayOfWeekItem("Tuesday", DayOfWeek.Tuesday));
+            daysOfWeek.Add(new DayOfWeekItem("Wednesday", DayOfWeek.Wednesday));
+            daysOfWeek.Add(new DayOfWeekItem("Thursday", DayOfWeek.Thursday));
+            daysOfWeek.Add(new DayOfWeekItem("Friday", DayOfWeek.Friday));
+            daysOfWeek.Add(new DayOfWeekItem("Saturday", DayOfWeek.Saturday));
+            daysOfWeek.Add(new DayOfWeekItem("Sunday", DayOfWeek.Sunday));
+            comboBoxFirstDayOfWeek.SelectedItem = daysOfWeek.OfType<DayOfWeekItem>().FirstOrDefault(dow => dow.Id == Config.CalendarFirstDay) ?? daysOfWeek[0];
         }
 
         public override void OnReady(){
             checkExpandLinks.CheckedChanged += checkExpandLinks_CheckedChanged;
+            checkFocusDmInput.CheckedChanged += checkFocusDmInput_CheckedChanged;
             checkOpenSearchInFirstColumn.CheckedChanged += checkOpenSearchInFirstColumn_CheckedChanged;
             checkKeepLikeFollowDialogsOpen.CheckedChanged += checkKeepLikeFollowDialogsOpen_CheckedChanged;
             checkBestImageQuality.CheckedChanged += checkBestImageQuality_CheckedChanged;
             checkAnimatedAvatars.CheckedChanged += checkAnimatedAvatars_CheckedChanged;
             trackBarZoom.ValueChanged += trackBarZoom_ValueChanged;
 
-            comboBoxTrayType.SelectedIndexChanged += comboBoxTrayType_SelectedIndexChanged;
-            checkTrayHighlight.CheckedChanged += checkTrayHighlight_CheckedChanged;
-            
             checkUpdateNotifications.CheckedChanged += checkUpdateNotifications_CheckedChanged;
             btnCheckUpdates.Click += btnCheckUpdates_Click;
 
             checkSmoothScrolling.CheckedChanged += checkSmoothScrolling_CheckedChanged;
             checkTouchAdjustment.CheckedChanged += checkTouchAdjustment_CheckedChanged;
             checkHardwareAcceleration.CheckedChanged += checkHardwareAcceleration_CheckedChanged;
-            comboBoxBrowserPath.SelectedIndexChanged += comboBoxBrowserPath_SelectedIndexChanged;
+            comboBoxCustomBrowser.SelectedIndexChanged += comboBoxCustomBrowser_SelectedIndexChanged;
+            btnCustomBrowserChange.Click += btnCustomBrowserChange_Click;
+            comboBoxCustomVideoPlayer.SelectedIndexChanged += comboBoxCustomVideoPlayer_SelectedIndexChanged;
+            btnCustomVideoPlayerChange.Click += btnCustomVideoPlayerChange_Click;
             comboBoxSearchEngine.SelectedIndexChanged += comboBoxSearchEngine_SelectedIndexChanged;
 
             checkSpellCheck.CheckedChanged += checkSpellCheck_CheckedChanged;
             comboBoxSpellCheckLanguage.SelectedValueChanged += comboBoxSpellCheckLanguage_SelectedValueChanged;
             comboBoxTranslationTarget.SelectedValueChanged += comboBoxTranslationTarget_SelectedValueChanged;
+            comboBoxFirstDayOfWeek.SelectedValueChanged += comboBoxFirstDayOfWeek_SelectedValueChanged;
         }
 
         public override void OnClosing(){
@@ -160,6 +169,10 @@ namespace TweetDuck.Core.Other.Settings{
             Config.ExpandLinksOnHover = checkExpandLinks.Checked;
         }
 
+        private void checkFocusDmInput_CheckedChanged(object sender, EventArgs e){
+            Config.FocusDmInput = checkFocusDmInput.Checked;
+        }
+
         private void checkOpenSearchInFirstColumn_CheckedChanged(object sender, EventArgs e){
             Config.OpenSearchInFirstColumn = checkOpenSearchInFirstColumn.Checked;
         }
@@ -181,7 +194,7 @@ namespace TweetDuck.Core.Other.Settings{
             if (trackBarZoom.AlignValueToTick()){
                 zoomUpdateTimer.Stop();
                 zoomUpdateTimer.Start();
-                labelZoomValue.Text = trackBarZoom.Value+"%";
+                labelZoomValue.Text = trackBarZoom.Value + "%";
             }
         }
 
@@ -190,18 +203,6 @@ namespace TweetDuck.Core.Other.Settings{
             zoomUpdateTimer.Stop();
         }
 
-        #endregion
-        #region System Tray
-        
-        private void comboBoxTrayType_SelectedIndexChanged(object sender, EventArgs e){
-            Config.TrayBehavior = (TrayIcon.Behavior)comboBoxTrayType.SelectedIndex;
-            checkTrayHighlight.Enabled = Config.TrayBehavior.ShouldDisplayIcon();
-        }
-
-        private void checkTrayHighlight_CheckedChanged(object sender, EventArgs e){
-            Config.EnableTrayHighlight = checkTrayHighlight.Checked;
-        }
-
         #endregion
         #region Updates
         
@@ -245,43 +246,95 @@ namespace TweetDuck.Core.Other.Settings{
             SysConfig.HardwareAcceleration = checkHardwareAcceleration.Checked;
         }
 
+        private void UpdateBrowserChangeButton(){
+            btnCustomBrowserChange.Visible = comboBoxCustomBrowser.SelectedIndex == browserListIndexCustom;
+        }
+
         private void UpdateBrowserPathSelection(){
             if (string.IsNullOrEmpty(Config.BrowserPath) || !File.Exists(Config.BrowserPath)){
-                comboBoxBrowserPath.SelectedIndex = browserListIndexDefault;
+                comboBoxCustomBrowser.SelectedIndex = browserListIndexDefault;
             }
             else{
-                WindowsUtils.Browser browserInfo = comboBoxBrowserPath.Items.OfType<WindowsUtils.Browser>().FirstOrDefault(browser => browser.Path == Config.BrowserPath);
+                WindowsUtils.Browser browserInfo = comboBoxCustomBrowser.Items.OfType<WindowsUtils.Browser>().FirstOrDefault(browser => browser.Path == Config.BrowserPath);
 
-                if (browserInfo == null){
-                    comboBoxBrowserPath.SelectedIndex = browserListIndexCustom;
+                if (browserInfo == null || Config.BrowserPathArgs != null){
+                    comboBoxCustomBrowser.SelectedIndex = browserListIndexCustom;
                 }
                 else{
-                    comboBoxBrowserPath.SelectedItem = browserInfo;
-                }
+                    comboBoxCustomBrowser.SelectedItem = browserInfo;
                 }
             }
 
-        private void comboBoxBrowserPath_SelectedIndexChanged(object sender, EventArgs e){
-            if (comboBoxBrowserPath.SelectedIndex == browserListIndexCustom){
-                using(OpenFileDialog dialog = new OpenFileDialog{
-                    AutoUpgradeEnabled = true,
-                    DereferenceLinks = true,
-                    InitialDirectory = Path.GetDirectoryName(Config.BrowserPath), // returns null if argument is null
-                    Title = "Open Links With...",
-                    Filter = "Executables (*.exe;*.bat;*.cmd)|*.exe;*.bat;*.cmd|All Files (*.*)|*.*"
+            UpdateBrowserChangeButton();
+        }
+
+        private void comboBoxCustomBrowser_SelectedIndexChanged(object sender, EventArgs e){
+            if (comboBoxCustomBrowser.SelectedIndex == browserListIndexCustom){
+                btnCustomBrowserChange_Click(sender, e);
+            }
+            else{
+                Config.BrowserPath = (comboBoxCustomBrowser.SelectedItem as WindowsUtils.Browser)?.Path; // default browser item is a string and casts to null
+                Config.BrowserPathArgs = null;
+                UpdateBrowserChangeButton();
+            }
+        }
+
+        private void btnCustomBrowserChange_Click(object sender, EventArgs e){
+            using(DialogSettingsExternalProgram dialog = new DialogSettingsExternalProgram("External Browser", "Open Links With..."){
+                Path = Config.BrowserPath,
+                Args = Config.BrowserPathArgs
             }){
                 if (dialog.ShowDialog() == DialogResult.OK){
-                        Config.BrowserPath = dialog.FileName;
+                    Config.BrowserPath = dialog.Path;
+                    Config.BrowserPathArgs = dialog.Args;
                 }
             }
 
-                comboBoxBrowserPath.SelectedIndexChanged -= comboBoxBrowserPath_SelectedIndexChanged;
+            comboBoxCustomBrowser.SelectedIndexChanged -= comboBoxCustomBrowser_SelectedIndexChanged;
             UpdateBrowserPathSelection();
-                comboBoxBrowserPath.SelectedIndexChanged += comboBoxBrowserPath_SelectedIndexChanged;
+            comboBoxCustomBrowser.SelectedIndexChanged += comboBoxCustomBrowser_SelectedIndexChanged;
+        }
+
+        private void UpdateVideoPlayerChangeButton(){
+            btnCustomVideoPlayerChange.Visible = comboBoxCustomVideoPlayer.SelectedIndex == videoPlayerListIndexCustom;
+        }
+
+        private void UpdateVideoPlayerPathSelection(){
+            if (string.IsNullOrEmpty(Config.VideoPlayerPath) || !File.Exists(Config.VideoPlayerPath)){
+                comboBoxCustomVideoPlayer.SelectedIndex = videoPlayerListIndexDefault;
             }
             else{
-                Config.BrowserPath = (comboBoxBrowserPath.SelectedItem as WindowsUtils.Browser)?.Path; // default browser item is a string and casts to null
+                comboBoxCustomVideoPlayer.SelectedIndex = videoPlayerListIndexCustom;
             }
+
+            UpdateVideoPlayerChangeButton();
+        }
+
+        private void comboBoxCustomVideoPlayer_SelectedIndexChanged(object sender, EventArgs e){
+            if (comboBoxCustomVideoPlayer.SelectedIndex == videoPlayerListIndexCustom){
+                btnCustomVideoPlayerChange_Click(sender, e);
+            }
+            else{
+                Config.VideoPlayerPath = null;
+                Config.VideoPlayerPathArgs = null;
+                UpdateVideoPlayerChangeButton();
+            }
+        }
+
+        private void btnCustomVideoPlayerChange_Click(object sender, EventArgs e){
+            using(DialogSettingsExternalProgram dialog = new DialogSettingsExternalProgram("External Video Player", "Play Videos With..."){
+                Path = Config.VideoPlayerPath,
+                Args = Config.VideoPlayerPathArgs
+            }){
+                if (dialog.ShowDialog() == DialogResult.OK){
+                    Config.VideoPlayerPath = dialog.Path;
+                    Config.VideoPlayerPathArgs = dialog.Args;
+                }
+            }
+
+            comboBoxCustomVideoPlayer.SelectedIndexChanged -= comboBoxCustomVideoPlayer_SelectedIndexChanged;
+            UpdateVideoPlayerPathSelection();
+            comboBoxCustomVideoPlayer.SelectedIndexChanged += comboBoxCustomVideoPlayer_SelectedIndexChanged;
         }
 
         private void comboBoxSearchEngine_SelectedIndexChanged(object sender, EventArgs e){
@@ -347,6 +400,24 @@ namespace TweetDuck.Core.Other.Settings{
             Config.TranslationTarget = (comboBoxTranslationTarget.SelectedItem as LocaleUtils.Item)?.Code ?? "en";
         }
 
+        private void comboBoxFirstDayOfWeek_SelectedValueChanged(object sender, EventArgs e){
+            Config.CalendarFirstDay = (comboBoxFirstDayOfWeek.SelectedItem as DayOfWeekItem)?.Id ?? -1;
+        }
+
+        private sealed class DayOfWeekItem{
+            private string Name { get; }
+            public int Id { get; }
+
+            public DayOfWeekItem(string name, DayOfWeek dow){
+                Name = name;
+                Id = LocaleUtils.GetJQueryDayOfWeek(dow);
+            }
+            
+            public override int GetHashCode() => Name.GetHashCode();
+            public override bool Equals(object obj) => obj is DayOfWeekItem other && Name == other.Name;
+            public override string ToString() => Name;
+        }
+
         #endregion
     }
 }

Dialogs/Settings/TabSettingsNotifications.Designer.cs

@@ -1,4 +1,4 @@
-namespace TweetDuck.Core.Other.Settings {
+namespace TweetDuck.Dialogs.Settings {
     partial class TabSettingsNotifications {
         /// <summary> 
         /// Required designer variable.
@@ -35,9 +35,9 @@
             this.radioLocTL = new System.Windows.Forms.RadioButton();
             this.trackBarEdgeDistance = new System.Windows.Forms.TrackBar();
             this.tableLayoutDurationButtons = new System.Windows.Forms.TableLayoutPanel();
-            this.btnDurationMedium = new TweetDuck.Core.Controls.FlatButton();
-            this.btnDurationLong = new TweetDuck.Core.Controls.FlatButton();
-            this.btnDurationShort = new TweetDuck.Core.Controls.FlatButton();
+            this.btnDurationMedium = new TweetDuck.Controls.FlatButton();
+            this.btnDurationLong = new TweetDuck.Controls.FlatButton();
+            this.btnDurationShort = new TweetDuck.Controls.FlatButton();
             this.labelDurationValue = new System.Windows.Forms.Label();
             this.trackBarDuration = new System.Windows.Forms.TrackBar();
             this.checkSkipOnLinkClick = new System.Windows.Forms.CheckBox();
@@ -65,6 +65,10 @@
             this.panelSize = new System.Windows.Forms.Panel();
             this.durationUpdateTimer = new System.Windows.Forms.Timer(this.components);
             this.flowPanelLeft = new System.Windows.Forms.FlowLayoutPanel();
+            this.labelOpacity = new System.Windows.Forms.Label();
+            this.panelOpacity = new System.Windows.Forms.Panel();
+            this.labelOpacityValue = new System.Windows.Forms.Label();
+            this.trackBarOpacity = new System.Windows.Forms.TrackBar();
             this.panelScrollSpeed = new System.Windows.Forms.Panel();
             this.flowPanelRight = new System.Windows.Forms.FlowLayoutPanel();
             this.panelSeparator = new System.Windows.Forms.Panel();
@@ -77,6 +81,8 @@
             this.panelTimer.SuspendLayout();
             this.panelSize.SuspendLayout();
             this.flowPanelLeft.SuspendLayout();
+            this.panelOpacity.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.trackBarOpacity)).BeginInit();
             this.panelScrollSpeed.SuspendLayout();
             this.flowPanelRight.SuspendLayout();
             this.SuspendLayout();
@@ -84,7 +90,7 @@
             // labelEdgeDistanceValue
             // 
             this.labelEdgeDistanceValue.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.labelEdgeDistanceValue.Location = new System.Drawing.Point(145, 4);
+            this.labelEdgeDistanceValue.Location = new System.Drawing.Point(175, 4);
             this.labelEdgeDistanceValue.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
             this.labelEdgeDistanceValue.Name = "labelEdgeDistanceValue";
             this.labelEdgeDistanceValue.Size = new System.Drawing.Size(40, 15);
@@ -193,7 +199,7 @@
             this.trackBarEdgeDistance.Maximum = 40;
             this.trackBarEdgeDistance.Minimum = 8;
             this.trackBarEdgeDistance.Name = "trackBarEdgeDistance";
-            this.trackBarEdgeDistance.Size = new System.Drawing.Size(148, 30);
+            this.trackBarEdgeDistance.Size = new System.Drawing.Size(177, 30);
             this.trackBarEdgeDistance.SmallChange = 2;
             this.trackBarEdgeDistance.TabIndex = 0;
             this.trackBarEdgeDistance.TickFrequency = 4;
@@ -208,12 +214,12 @@
             this.tableLayoutDurationButtons.Controls.Add(this.btnDurationMedium, 0, 0);
             this.tableLayoutDurationButtons.Controls.Add(this.btnDurationLong, 1, 0);
             this.tableLayoutDurationButtons.Controls.Add(this.btnDurationShort, 0, 0);
-            this.tableLayoutDurationButtons.Location = new System.Drawing.Point(3, 353);
+            this.tableLayoutDurationButtons.Location = new System.Drawing.Point(3, 401);
             this.tableLayoutDurationButtons.Name = "tableLayoutDurationButtons";
             this.tableLayoutDurationButtons.RowCount = 1;
             this.tableLayoutDurationButtons.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
             this.tableLayoutDurationButtons.Size = new System.Drawing.Size(180, 27);
-            this.tableLayoutDurationButtons.TabIndex = 12;
+            this.tableLayoutDurationButtons.TabIndex = 14;
             // 
             // btnDurationMedium
             // 
@@ -267,7 +273,7 @@
             // 
             this.labelDurationValue.BackColor = System.Drawing.Color.Transparent;
             this.labelDurationValue.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.labelDurationValue.Location = new System.Drawing.Point(147, 4);
+            this.labelDurationValue.Location = new System.Drawing.Point(177, 4);
             this.labelDurationValue.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
             this.labelDurationValue.Name = "labelDurationValue";
             this.labelDurationValue.Size = new System.Drawing.Size(52, 15);
@@ -282,7 +288,7 @@
             this.trackBarDuration.Maximum = 60;
             this.trackBarDuration.Minimum = 10;
             this.trackBarDuration.Name = "trackBarDuration";
-            this.trackBarDuration.Size = new System.Drawing.Size(148, 30);
+            this.trackBarDuration.Size = new System.Drawing.Size(177, 30);
             this.trackBarDuration.TabIndex = 0;
             this.trackBarDuration.TickFrequency = 5;
             this.trackBarDuration.Value = 25;
@@ -349,11 +355,11 @@
             // 
             this.checkTimerCountDown.AutoSize = true;
             this.checkTimerCountDown.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkTimerCountDown.Location = new System.Drawing.Point(6, 266);
+            this.checkTimerCountDown.Location = new System.Drawing.Point(6, 314);
             this.checkTimerCountDown.Margin = new System.Windows.Forms.Padding(6, 3, 3, 2);
             this.checkTimerCountDown.Name = "checkTimerCountDown";
             this.checkTimerCountDown.Size = new System.Drawing.Size(132, 19);
-            this.checkTimerCountDown.TabIndex = 9;
+            this.checkTimerCountDown.TabIndex = 11;
             this.checkTimerCountDown.Text = "Timer Counts Down";
             this.checkTimerCountDown.UseVisualStyleBackColor = true;
             // 
@@ -361,11 +367,11 @@
             // 
             this.checkNotificationTimer.AutoSize = true;
             this.checkNotificationTimer.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.checkNotificationTimer.Location = new System.Drawing.Point(6, 242);
+            this.checkNotificationTimer.Location = new System.Drawing.Point(6, 290);
             this.checkNotificationTimer.Margin = new System.Windows.Forms.Padding(6, 6, 3, 2);
             this.checkNotificationTimer.Name = "checkNotificationTimer";
             this.checkNotificationTimer.Size = new System.Drawing.Size(164, 19);
-            this.checkNotificationTimer.TabIndex = 8;
+            this.checkNotificationTimer.TabIndex = 10;
             this.checkNotificationTimer.Text = "Display Notification Timer";
             this.checkNotificationTimer.UseVisualStyleBackColor = true;
             // 
@@ -429,7 +435,7 @@
             // labelScrollSpeedValue
             // 
             this.labelScrollSpeedValue.Font = new System.Drawing.Font("Segoe UI", 9F);
-            this.labelScrollSpeedValue.Location = new System.Drawing.Point(145, 4);
+            this.labelScrollSpeedValue.Location = new System.Drawing.Point(176, 4);
             this.labelScrollSpeedValue.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
             this.labelScrollSpeedValue.Name = "labelScrollSpeedValue";
             this.labelScrollSpeedValue.Size = new System.Drawing.Size(38, 15);
@@ -445,7 +451,7 @@
             this.trackBarScrollSpeed.Maximum = 200;
             this.trackBarScrollSpeed.Minimum = 25;
             this.trackBarScrollSpeed.Name = "trackBarScrollSpeed";
-            this.trackBarScrollSpeed.Size = new System.Drawing.Size(148, 30);
+            this.trackBarScrollSpeed.Size = new System.Drawing.Size(177, 30);
             this.trackBarScrollSpeed.SmallChange = 5;
             this.trackBarScrollSpeed.TabIndex = 0;
             this.trackBarScrollSpeed.TickFrequency = 25;
@@ -490,32 +496,32 @@
             // 
             this.panelTimer.Controls.Add(this.labelDurationValue);
             this.panelTimer.Controls.Add(this.trackBarDuration);
-            this.panelTimer.Location = new System.Drawing.Point(0, 315);
+            this.panelTimer.Location = new System.Drawing.Point(0, 363);
             this.panelTimer.Margin = new System.Windows.Forms.Padding(0, 1, 0, 0);
             this.panelTimer.Name = "panelTimer";
             this.panelTimer.Size = new System.Drawing.Size(300, 35);
-            this.panelTimer.TabIndex = 11;
+            this.panelTimer.TabIndex = 13;
             // 
             // labelDuration
             // 
             this.labelDuration.AutoSize = true;
             this.labelDuration.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
-            this.labelDuration.Location = new System.Drawing.Point(3, 299);
+            this.labelDuration.Location = new System.Drawing.Point(3, 347);
             this.labelDuration.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
             this.labelDuration.Name = "labelDuration";
             this.labelDuration.Size = new System.Drawing.Size(54, 15);
-            this.labelDuration.TabIndex = 10;
+            this.labelDuration.TabIndex = 12;
             this.labelDuration.Text = "Duration";
             // 
             // labelTimer
             // 
             this.labelTimer.AutoSize = true;
             this.labelTimer.Font = new System.Drawing.Font("Segoe UI Semibold", 10.5F, System.Drawing.FontStyle.Bold);
-            this.labelTimer.Location = new System.Drawing.Point(0, 216);
-            this.labelTimer.Margin = new System.Windows.Forms.Padding(0, 40, 0, 1);
+            this.labelTimer.Location = new System.Drawing.Point(0, 264);
+            this.labelTimer.Margin = new System.Windows.Forms.Padding(0, 25, 0, 1);
             this.labelTimer.Name = "labelTimer";
             this.labelTimer.Size = new System.Drawing.Size(50, 19);
-            this.labelTimer.TabIndex = 7;
+            this.labelTimer.TabIndex = 9;
             this.labelTimer.Text = "TIMER";
             // 
             // labelSize
@@ -555,6 +561,8 @@
             this.flowPanelLeft.Controls.Add(this.checkNonIntrusive);
             this.flowPanelLeft.Controls.Add(this.labelIdlePause);
             this.flowPanelLeft.Controls.Add(this.comboBoxIdlePause);
+            this.flowPanelLeft.Controls.Add(this.labelOpacity);
+            this.flowPanelLeft.Controls.Add(this.panelOpacity);
             this.flowPanelLeft.Controls.Add(this.labelTimer);
             this.flowPanelLeft.Controls.Add(this.checkNotificationTimer);
             this.flowPanelLeft.Controls.Add(this.checkTimerCountDown);
@@ -568,6 +576,52 @@
             this.flowPanelLeft.TabIndex = 0;
             this.flowPanelLeft.WrapContents = false;
             // 
+            // labelOpacity
+            // 
+            this.labelOpacity.AutoSize = true;
+            this.labelOpacity.Font = new System.Drawing.Font("Segoe UI Semibold", 9F, System.Drawing.FontStyle.Bold);
+            this.labelOpacity.Location = new System.Drawing.Point(3, 188);
+            this.labelOpacity.Margin = new System.Windows.Forms.Padding(3, 12, 3, 0);
+            this.labelOpacity.Name = "labelOpacity";
+            this.labelOpacity.Size = new System.Drawing.Size(48, 15);
+            this.labelOpacity.TabIndex = 7;
+            this.labelOpacity.Text = "Opacity";
+            // 
+            // panelOpacity
+            // 
+            this.panelOpacity.Controls.Add(this.labelOpacityValue);
+            this.panelOpacity.Controls.Add(this.trackBarOpacity);
+            this.panelOpacity.Location = new System.Drawing.Point(0, 204);
+            this.panelOpacity.Margin = new System.Windows.Forms.Padding(0, 1, 0, 0);
+            this.panelOpacity.Name = "panelOpacity";
+            this.panelOpacity.Size = new System.Drawing.Size(300, 35);
+            this.panelOpacity.TabIndex = 8;
+            // 
+            // labelOpacityValue
+            // 
+            this.labelOpacityValue.BackColor = System.Drawing.SystemColors.Control;
+            this.labelOpacityValue.Font = new System.Drawing.Font("Segoe UI", 9F);
+            this.labelOpacityValue.Location = new System.Drawing.Point(176, 4);
+            this.labelOpacityValue.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
+            this.labelOpacityValue.Name = "labelOpacityValue";
+            this.labelOpacityValue.Size = new System.Drawing.Size(38, 15);
+            this.labelOpacityValue.TabIndex = 1;
+            this.labelOpacityValue.Text = "100%";
+            this.labelOpacityValue.TextAlign = System.Drawing.ContentAlignment.TopRight;
+            // 
+            // trackBarOpacity
+            // 
+            this.trackBarOpacity.AutoSize = false;
+            this.trackBarOpacity.Location = new System.Drawing.Point(3, 3);
+            this.trackBarOpacity.Maximum = 100;
+            this.trackBarOpacity.Minimum = 20;
+            this.trackBarOpacity.Name = "trackBarOpacity";
+            this.trackBarOpacity.Size = new System.Drawing.Size(177, 30);
+            this.trackBarOpacity.SmallChange = 5;
+            this.trackBarOpacity.TabIndex = 0;
+            this.trackBarOpacity.TickFrequency = 10;
+            this.trackBarOpacity.Value = 100;
+            // 
             // panelScrollSpeed
             // 
             this.panelScrollSpeed.Controls.Add(this.trackBarScrollSpeed);
@@ -630,6 +684,8 @@
             this.panelSize.ResumeLayout(false);
             this.flowPanelLeft.ResumeLayout(false);
             this.flowPanelLeft.PerformLayout();
+            this.panelOpacity.ResumeLayout(false);
+            ((System.ComponentModel.ISupportInitialize)(this.trackBarOpacity)).EndInit();
             this.panelScrollSpeed.ResumeLayout(false);
             this.flowPanelRight.ResumeLayout(false);
             this.flowPanelRight.PerformLayout();
@@ -652,9 +708,9 @@
         private System.Windows.Forms.Label labelDurationValue;
         private System.Windows.Forms.TrackBar trackBarDuration;
         private System.Windows.Forms.TableLayoutPanel tableLayoutDurationButtons;
-        private TweetDuck.Core.Controls.FlatButton btnDurationMedium;
-        private TweetDuck.Core.Controls.FlatButton btnDurationLong;
-        private TweetDuck.Core.Controls.FlatButton btnDurationShort;
+        private TweetDuck.Controls.FlatButton btnDurationMedium;
+        private TweetDuck.Controls.FlatButton btnDurationLong;
+        private TweetDuck.Controls.FlatButton btnDurationShort;
         private System.Windows.Forms.CheckBox checkNonIntrusive;
         private System.Windows.Forms.Label labelIdlePause;
         private System.Windows.Forms.ComboBox comboBoxIdlePause;
@@ -682,5 +738,9 @@
         private System.Windows.Forms.Panel panelScrollSpeed;
         private System.Windows.Forms.FlowLayoutPanel flowPanelRight;
         private System.Windows.Forms.Panel panelSeparator;
+        private System.Windows.Forms.Label labelOpacity;
+        private System.Windows.Forms.Panel panelOpacity;
+        private System.Windows.Forms.Label labelOpacityValue;
+        private System.Windows.Forms.TrackBar trackBarOpacity;
     }
 }

Dialogs/Settings/TabSettingsNotifications.cs

@@ -1,11 +1,11 @@
 using System;
 using System.Windows.Forms;
-using TweetDuck.Core.Controls;
-using TweetDuck.Core.Notification;
-using TweetDuck.Core.Notification.Example;
+using TweetDuck.Browser.Notification.Example;
+using TweetDuck.Controls;
+using TweetLib.Core.Features.Notifications;
 
-namespace TweetDuck.Core.Other.Settings{
-    sealed partial class TabSettingsNotifications : BaseTabSettings{
+namespace TweetDuck.Dialogs.Settings{
+    sealed partial class TabSettingsNotifications : FormSettings.BaseTab{
         private static readonly int[] IdlePauseSeconds = { 0, 30, 60, 120, 300 };
 
         private readonly FormNotificationExample notification;
@@ -23,7 +23,6 @@ namespace TweetDuck.Core.Other.Settings{
                 });
             };
 
-            this.notification.Activated += notification_Activated;
             this.notification.Show();
             
             Disposed += (sender, args) => this.notification.Dispose();
@@ -48,6 +47,9 @@ namespace TweetDuck.Core.Other.Settings{
             comboBoxIdlePause.Items.Add("5 minutes");
             comboBoxIdlePause.SelectedIndex = Math.Max(0, Array.FindIndex(IdlePauseSeconds, val => val == Config.NotificationIdlePauseSeconds));
 
+            trackBarOpacity.SetValueSafe(Config.NotificationWindowOpacity);
+            labelOpacityValue.Text = Config.NotificationWindowOpacity + "%";
+
             // timer
 
             toolTip.SetToolTip(checkTimerCountDown, "The notification timer counts down instead of up.");
@@ -59,31 +61,31 @@ namespace TweetDuck.Core.Other.Settings{
             checkTimerCountDown.Checked = Config.NotificationTimerCountDown;
 
             trackBarDuration.SetValueSafe(Config.NotificationDurationValue);
-            labelDurationValue.Text = Config.NotificationDurationValue+" ms/c";
+            labelDurationValue.Text = Config.NotificationDurationValue + " ms/c";
 
             // location
 
             toolTip.SetToolTip(radioLocCustom, "Drag the example notification window to the desired location.");
             
             switch(Config.NotificationPosition){
-                case TweetNotification.Position.TopLeft: radioLocTL.Checked = true; break;
-                case TweetNotification.Position.TopRight: radioLocTR.Checked = true; break;
-                case TweetNotification.Position.BottomLeft: radioLocBL.Checked = true; break;
-                case TweetNotification.Position.BottomRight: radioLocBR.Checked = true; break;
-                case TweetNotification.Position.Custom: radioLocCustom.Checked = true; break;
+                case DesktopNotification.Position.TopLeft: radioLocTL.Checked = true; break;
+                case DesktopNotification.Position.TopRight: radioLocTR.Checked = true; break;
+                case DesktopNotification.Position.BottomLeft: radioLocBL.Checked = true; break;
+                case DesktopNotification.Position.BottomRight: radioLocBR.Checked = true; break;
+                case DesktopNotification.Position.Custom: radioLocCustom.Checked = true; break;
             }
 
             comboBoxDisplay.Enabled = trackBarEdgeDistance.Enabled = !radioLocCustom.Checked;
             comboBoxDisplay.Items.Add("(Same as TweetDuck)");
 
             foreach(Screen screen in Screen.AllScreens){
-                comboBoxDisplay.Items.Add(screen.DeviceName.TrimStart('\\', '.')+" ("+screen.Bounds.Width+"x"+screen.Bounds.Height+")");
+                comboBoxDisplay.Items.Add($"{screen.DeviceName.TrimStart('\\', '.')} ({screen.Bounds.Width}x{screen.Bounds.Height})");
             }
 
-            comboBoxDisplay.SelectedIndex = Math.Min(comboBoxDisplay.Items.Count-1, Config.NotificationDisplay);
+            comboBoxDisplay.SelectedIndex = Math.Min(comboBoxDisplay.Items.Count - 1, Config.NotificationDisplay);
 
             trackBarEdgeDistance.SetValueSafe(Config.NotificationEdgeDistance);
-            labelEdgeDistanceValue.Text = trackBarEdgeDistance.Value+" px";
+            labelEdgeDistanceValue.Text = trackBarEdgeDistance.Value + " px";
 
             // size
 
@@ -91,12 +93,12 @@ namespace TweetDuck.Core.Other.Settings{
             toolTip.SetToolTip(radioSizeCustom, "Resize the example notification window to the desired size.");
 
             switch(Config.NotificationSize){
-                case TweetNotification.Size.Auto: radioSizeAuto.Checked = true; break;
-                case TweetNotification.Size.Custom: radioSizeCustom.Checked = true; break;
+                case DesktopNotification.Size.Auto: radioSizeAuto.Checked = true; break;
+                case DesktopNotification.Size.Custom: radioSizeCustom.Checked = true; break;
             }
 
             trackBarScrollSpeed.SetValueSafe(Config.NotificationScrollSpeed);
-            labelScrollSpeedValue.Text = trackBarScrollSpeed.Value+"%";
+            labelScrollSpeedValue.Text = trackBarScrollSpeed.Value + "%";
         }
 
         public override void OnReady(){
@@ -105,6 +107,7 @@ namespace TweetDuck.Core.Other.Settings{
             checkSkipOnLinkClick.CheckedChanged += checkSkipOnLinkClick_CheckedChanged;
             checkNonIntrusive.CheckedChanged += checkNonIntrusive_CheckedChanged;
             comboBoxIdlePause.SelectedValueChanged += comboBoxIdlePause_SelectedValueChanged;
+            trackBarOpacity.ValueChanged += trackBarOpacity_ValueChanged;
 
             checkNotificationTimer.CheckedChanged += checkNotificationTimer_CheckedChanged;
             checkTimerCountDown.CheckedChanged += checkTimerCountDown_CheckedChanged;
@@ -135,11 +138,6 @@ namespace TweetDuck.Core.Other.Settings{
             }
         }
 
-        private void notification_Activated(object sender, EventArgs e){
-            notification.Hide();
-            notification.Activated -= notification_Activated;
-        }
-
         private void notification_Move(object sender, EventArgs e){
             if (radioLocCustom.Checked && notification.Location != ControlExtensions.InvisibleLocation){
                 Config.CustomNotificationPosition = notification.Location;
@@ -176,6 +174,13 @@ namespace TweetDuck.Core.Other.Settings{
             Config.NotificationIdlePauseSeconds = IdlePauseSeconds[comboBoxIdlePause.SelectedIndex];
         }
 
+        private void trackBarOpacity_ValueChanged(object sender, EventArgs e){
+            if (trackBarOpacity.AlignValueToTick()){
+                Config.NotificationWindowOpacity = trackBarOpacity.Value;
+                labelOpacityValue.Text = Config.NotificationWindowOpacity + "%";
+            }
+        }
+
         #endregion
         #region Timer
 
@@ -195,7 +200,7 @@ namespace TweetDuck.Core.Other.Settings{
             durationUpdateTimer.Start();
 
             Config.NotificationDurationValue = trackBarDuration.Value;
-            labelDurationValue.Text = Config.NotificationDurationValue+" ms/c";
+            labelDurationValue.Text = Config.NotificationDurationValue + " ms/c";
         }
 
         private void btnDurationShort_Click(object sender, EventArgs e){
@@ -219,10 +224,18 @@ namespace TweetDuck.Core.Other.Settings{
         #region Location
 
         private void radioLoc_CheckedChanged(object sender, EventArgs e){
-            if (radioLocTL.Checked)Config.NotificationPosition = TweetNotification.Position.TopLeft;
-            else if (radioLocTR.Checked)Config.NotificationPosition = TweetNotification.Position.TopRight;
-            else if (radioLocBL.Checked)Config.NotificationPosition = TweetNotification.Position.BottomLeft;
-            else if (radioLocBR.Checked)Config.NotificationPosition = TweetNotification.Position.BottomRight;
+            if (radioLocTL.Checked){
+                Config.NotificationPosition = DesktopNotification.Position.TopLeft;
+            }
+            else if (radioLocTR.Checked){
+                Config.NotificationPosition = DesktopNotification.Position.TopRight;
+            }
+            else if (radioLocBL.Checked){
+                Config.NotificationPosition = DesktopNotification.Position.BottomLeft;
+            }
+            else if (radioLocBR.Checked){
+                Config.NotificationPosition = DesktopNotification.Position.BottomRight;
+            }
 
             comboBoxDisplay.Enabled = trackBarEdgeDistance.Enabled = true;
             notification.ShowExampleNotification(false);
@@ -233,18 +246,18 @@ namespace TweetDuck.Core.Other.Settings{
                 Config.CustomNotificationPosition = notification.Location;
             }
 
-            Config.NotificationPosition = TweetNotification.Position.Custom;
+            Config.NotificationPosition = DesktopNotification.Position.Custom;
 
             comboBoxDisplay.Enabled = trackBarEdgeDistance.Enabled = false;
             notification.ShowExampleNotification(false);
 
             if (notification.IsFullyOutsideView() && FormMessage.Question("Notification is Outside View", "The notification seems to be outside of view, would you like to reset its position?", FormMessage.Yes, FormMessage.No)){
-                Config.NotificationPosition = TweetNotification.Position.TopRight;
+                Config.NotificationPosition = DesktopNotification.Position.TopRight;
                 notification.MoveToVisibleLocation();
 
                 Config.CustomNotificationPosition = notification.Location;
 
-                Config.NotificationPosition = TweetNotification.Position.Custom;
+                Config.NotificationPosition = DesktopNotification.Position.Custom;
                 notification.MoveToVisibleLocation();
             }
         }
@@ -255,7 +268,7 @@ namespace TweetDuck.Core.Other.Settings{
         }
 
         private void trackBarEdgeDistance_ValueChanged(object sender, EventArgs e){
-            labelEdgeDistanceValue.Text = trackBarEdgeDistance.Value+" px";
+            labelEdgeDistanceValue.Text = trackBarEdgeDistance.Value + " px";
             Config.NotificationEdgeDistance = trackBarEdgeDistance.Value;
             notification.ShowExampleNotification(false);
         }
@@ -265,7 +278,7 @@ namespace TweetDuck.Core.Other.Settings{
 
         private void radioSize_CheckedChanged(object sender, EventArgs e){
             if (radioSizeAuto.Checked){
-                Config.NotificationSize = TweetNotification.Size.Auto;
+                Config.NotificationSize = DesktopNotification.Size.Auto;
             }
             
             notification.ShowExampleNotification(false);
@@ -276,13 +289,13 @@ namespace TweetDuck.Core.Other.Settings{
                 Config.CustomNotificationSize = notification.BrowserSize;
             }
 
-            Config.NotificationSize = TweetNotification.Size.Custom;
+            Config.NotificationSize = DesktopNotification.Size.Custom;
             notification.ShowExampleNotification(false);
         }
 
         private void trackBarScrollSpeed_ValueChanged(object sender, EventArgs e){
             if (trackBarScrollSpeed.AlignValueToTick()){
-                labelScrollSpeedValue.Text = trackBarScrollSpeed.Value+"%";
+                labelScrollSpeedValue.Text = trackBarScrollSpeed.Value + "%";
                 Config.NotificationScrollSpeed = trackBarScrollSpeed.Value;
             }
         }