TweetDuck/Dialogs/FormPlugins.cs

using System;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using TweetDuck.Configuration;
using TweetDuck.Management;
using TweetDuck.Plugins;
using TweetLib.Core;
using TweetLib.Core.Features.Plugins;

namespace TweetDuck.Dialogs {
	sealed partial class FormPlugins : Form, FormManager.IAppDialog {
		private static UserConfig Config => Program.Config.User;

		private readonly PluginManager pluginManager;

		public FormPlugins() {
			InitializeComponent();

			Text = Program.BrandName + " Plugins";
		}

		public FormPlugins(PluginManager pluginManager) : this() {
			this.pluginManager = pluginManager;

			if (!Config.PluginsWindowSize.IsEmpty) {
				Size targetSize = Config.PluginsWindowSize;
				Size = new Size(Math.Max(MinimumSize.Width, targetSize.Width), Math.Max(MinimumSize.Height, targetSize.Height));
			}

			Shown += (sender, args) => { ReloadPluginList(); };

			FormClosed += (sender, args) => {
				Config.PluginsWindowSize = Size;
				Config.Save();
			};

			ResizeEnd += (sender, args) => { timerLayout.Start(); };
		}

		private int GetPluginOrderIndex(Plugin plugin) {
			return !plugin.CanRun ? 0 : pluginManager.Config.IsEnabled(plugin) ? 1 : 2;
		}

		private void ReloadPluginList() {
			flowLayoutPlugins.Controls.Clear();
			flowLayoutPlugins.SuspendLayout();

			foreach (Plugin plugin in pluginManager.Plugins.OrderBy(GetPluginOrderIndex).ThenBy(plugin => plugin.Name)) {
				flowLayoutPlugins.Controls.Add(new PluginControl(pluginManager, plugin));

				flowLayoutPlugins.Controls.Add(new Panel {
					BackColor = Color.DimGray,
					Margin = new Padding(0),
					Size = new Size(1, 1)
				});
			}

			flowLayoutPlugins.ResumeLayout(true);

			timerLayout_Tick(null, EventArgs.Empty);
			timerLayout.Start();
		}

		private void timerLayout_Tick(object sender, EventArgs e) {
			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);
		}

		private void flowLayoutPlugins_Resize(object sender, EventArgs e) {
			Control lastPlugin = flowLayoutPlugins.Controls.OfType<PluginControl>().LastOrDefault();

			if (lastPlugin == null) {
				return;
			}

			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;
			}

			flowLayoutPlugins.Controls[flowLayoutPlugins.Controls.Count - 1].Visible = !showScrollBar;
			flowLayoutPlugins.Focus();
		}

		private void btnOpenFolder_Click(object sender, EventArgs e) {
			App.SystemHandler.OpenFileExplorer(pluginManager.PathCustomPlugins);
		}

		private void btnReload_Click(object sender, EventArgs e) {
			if (FormMessage.Warning("Reloading Plugins", "This will also reload the browser window. Do you want to proceed?", FormMessage.Yes, FormMessage.No)) {
				pluginManager.Reload();
				ReloadPluginList();
			}
		}

		private void btnClose_Click(object sender, EventArgs e) {
			Close();
		}
	}
}