Debug tools

Closes #18

.gitignore

@@ -1,8 +1,6 @@
 /.idea/*
-!/.idea/compiler.xml
-!/.idea/encodings.xml
-!/.idea/gradle.xml
-!/.idea/vcs.xml
+!/.idea/dictionaries
+!/.idea/runConfigurations
 
 /.gradle/
 /build/

.idea/.gitignore

@@ -1,5 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Editor-based HTTP Client requests
-/httpRequests/

.idea/compiler.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
-  </component>
-</project>

.idea/dictionaries/default_user.xml

@@ -0,0 +1,7 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="default.user">
+    <words>
+      <w>inspectionlens</w>
+    </words>
+  </dictionary>
+</component>

.idea/encodings.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="Encoding" defaultCharsetForPropertiesFiles="UTF-8">
-    <file url="PROJECT" charset="UTF-8" />
-  </component>
-</project>

.idea/gradle.xml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleMigrationSettings" migrationVersion="1" />
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="delegatedBuild" value="true" />
-        <option name="testRunner" value="GRADLE" />
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-          </set>
-        </option>
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>

.idea/vcs.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GitSharedSettings">
-    <option name="FORCE_PUSH_PROHIBITED_PATTERNS">
-      <list />
-    </option>
-  </component>
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>

README.md

@@ -1,9 +1,11 @@
-IntelliJ plugin that shows errors, warnings, and other inspection highlights inline.
+# Inspection Lens <img align="right" src="logo.png" alt="Plugin Logo">
 
-Simply install the plugin and inspection descriptions will appear on the right side of the lines. Shown inspection severities are **Errors**, **Warnings**, **Weak Warnings**, **Server Problems**, **Typos**, and other inspections from plugins or future IntelliJ versions that have a high enough severity level. Each severity has a different color, with support for both light and dark themes.
+Displays errors, warnings, and other inspections inline. Highlights the background of lines with inspections. Supports light and dark themes out of the box.
 
-The plugin is not customizable outside of the ability to disable/enable the plugin without restarting the IDE. If the defaults don't work for you, I would recommend either trying the [Inline Error](https://plugins.jetbrains.com/plugin/17302-inlineerror) plugin which can be customized, or proposing your change in the [issue tracker](https://github.com/chylex/IntelliJ-Inspection-Lens/issues).
+By default, the plugin shows **Errors**, **Warnings**, **Weak Warnings**, **Server Problems**, **Grammar Errors**, **Typos**, and other inspections with a high enough severity level. Configure visible severities in **Settings | Tools | Inspection Lens**.
+
+Left-click an inspection to show quick fixes. Middle-click an inspection to navigate to the relevant code in the editor.
 
 Inspired by [Error Lens](https://marketplace.visualstudio.com/items?itemName=usernamehw.errorlens) for Visual Studio Code, and [Inline Error](https://plugins.jetbrains.com/plugin/17302-inlineerror) for IntelliJ Platform.
 
-![Inspection Lens Screenshot](https://raw.githubusercontent.com/chylex/IntelliJ-Inspection-Lens/main/.github/readme/intellij.png)
+![Inspection Lens Screenshot](.github/readme/intellij.png)

build.gradle.kts

@@ -3,33 +3,46 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-	kotlin("jvm") version "1.6.21"
-	id("org.jetbrains.intellij") version "1.9.0"
+	kotlin("jvm") version "1.8.0"
+	id("org.jetbrains.intellij") version "1.17.0"
 }
 
 group = "com.chylex.intellij.inspectionlens"
-version = "1.1.0"
+version = "1.5"
 
 repositories {
 	mavenCentral()
 }
 
 intellij {
-	version.set("2022.2")
+	version.set("2023.3.3")
 	updateSinceUntilBuild.set(false)
+	
+	plugins.add("tanvd.grazi")
+}
+
+kotlin {
+	jvmToolchain(17)
+}
+
+dependencies {
+	testImplementation("org.junit.jupiter:junit-jupiter:5.9.2")
 }
 
 tasks.patchPluginXml {
-	sinceBuild.set("222")
+	sinceBuild.set("233.11361.10")
 }
 
 tasks.buildSearchableOptions {
 	enabled = false
 }
 
+tasks.test {
+	useJUnitPlatform()
+}
+
 tasks.withType<KotlinCompile> {
-	kotlinOptions.jvmTarget = "11"
 	kotlinOptions.freeCompilerArgs = listOf(
-		"-Xjvm-default=enable"
+		"-Xjvm-default=all"
 	)
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -1,7 +1,7 @@
-#!/usr/bin/env sh
+#!/bin/sh
 
 #
-# Copyright 2015 the original author or authors.
+# Copyright © 2015-2021 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -17,67 +17,99 @@
 #
 
 ##############################################################################
-##
-##  Gradle start up script for UN*X
-##
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
 ##############################################################################
 
 # Attempt to set APP_HOME
+
 # Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
 done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
 
-APP_NAME="Gradle"
-APP_BASE_NAME=`basename "$0"`
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD="maximum"
+MAX_FD=maximum
 
 warn () {
     echo "$*"
-}
+} >&2
 
 die () {
     echo
     echo "$*"
     echo
     exit 1
-}
+} >&2
 
 # OS specific support (must be 'true' or 'false').
 cygwin=false
 msys=false
 darwin=false
 nonstop=false
-case "`uname`" in
-  CYGWIN* )
-    cygwin=true
-    ;;
-  Darwin* )
-    darwin=true
-    ;;
-  MSYS* | MINGW* )
-    msys=true
-    ;;
-  NONSTOP* )
-    nonstop=true
-    ;;
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
 esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
@@ -87,9 +119,9 @@ CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
         # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD="$JAVA_HOME/jre/sh/java"
+        JAVACMD=$JAVA_HOME/jre/sh/java
     else
-        JAVACMD="$JAVA_HOME/bin/java"
+        JAVACMD=$JAVA_HOME/bin/java
     fi
     if [ ! -x "$JAVACMD" ] ; then
         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
@@ -98,88 +130,120 @@ Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
     fi
 else
-    JAVACMD="java"
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
-    MAX_FD_LIMIT=`ulimit -H -n`
-    if [ $? -eq 0 ] ; then
-        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
-            MAX_FD="$MAX_FD_LIMIT"
-        fi
-        ulimit -n $MAX_FD
-        if [ $? -ne 0 ] ; then
-            warn "Could not set maximum file descriptor limit: $MAX_FD"
-        fi
-    else
-        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
-    fi
-fi
-
-# For Darwin, add options to specify how the application appears in the dock
-if $darwin; then
-    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
-fi
-
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
-    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
-    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-
-    JAVACMD=`cygpath --unix "$JAVACMD"`
-
-    # We build the pattern for arguments to be converted via cygpath
-    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
-    SEP=""
-    for dir in $ROOTDIRSRAW ; do
-        ROOTDIRS="$ROOTDIRS$SEP$dir"
-        SEP="|"
-    done
-    OURCYGPATTERN="(^($ROOTDIRS))"
-    # Add a user-defined pattern to the cygpath arguments
-    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
-        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
-    fi
-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    i=0
-    for arg in "$@" ; do
-        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
-        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
-
-        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
-            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
-        else
-            eval `echo args$i`="\"$arg\""
-        fi
-        i=`expr $i + 1`
-    done
-    case $i in
-        0) set -- ;;
-        1) set -- "$args0" ;;
-        2) set -- "$args0" "$args1" ;;
-        3) set -- "$args0" "$args1" "$args2" ;;
-        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
 fi
 
-# Escape application args
-save () {
-    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
-    echo " "
-}
-APP_ARGS=`save "$@"`
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
 
-# Collect all arguments for the java command, following the shell quoting and substitution rules
-eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
 
 exec "$JAVACMD" "$@"

gradlew.bat

@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,8 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +41,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +76,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

src/main/kotlin/com/chylex/intellij/inspectionlens/EditorInlayLensManager.kt

@@ -1,71 +0,0 @@
-package com.chylex.intellij.inspectionlens
-
-import com.intellij.codeInsight.daemon.impl.HighlightInfo
-import com.intellij.openapi.editor.Editor
-import com.intellij.openapi.editor.Inlay
-import com.intellij.openapi.editor.InlayProperties
-import com.intellij.openapi.editor.markup.RangeHighlighter
-import com.intellij.openapi.util.Key
-
-/**
- * Manages visible inspection lenses for an [Editor].
- */
-class EditorInlayLensManager private constructor(private val editor: Editor) {
-	companion object {
-		private val KEY = Key<EditorInlayLensManager>(EditorInlayLensManager::class.java.name)
-		
-		fun getOrCreate(editor: Editor): EditorInlayLensManager {
-			return editor.getUserData(KEY) ?: EditorInlayLensManager(editor).also { editor.putUserData(KEY, it) }
-		}
-		
-		fun remove(editor: Editor) {
-			val manager = editor.getUserData(KEY)
-			if (manager != null) {
-				manager.hideAll()
-				editor.putUserData(KEY, null)
-			}
-		}
-		
-		private fun getInlayHintOffset(info: HighlightInfo): Int {
-			// Ensures a highlight at the end of a line does not overflow to the next line.
-			return info.actualEndOffset - 1
-		}
-	}
-	
-	private val inlays = mutableMapOf<RangeHighlighter, Inlay<LensRenderer>>()
-	
-	fun show(highlighterWithInfo: HighlighterWithInfo) {
-		val (highlighter, info) = highlighterWithInfo
-		val currentInlay = inlays[highlighter]
-		if (currentInlay != null && currentInlay.isValid) {
-			currentInlay.renderer.setPropertiesFrom(info)
-			currentInlay.update()
-		}
-		else {
-			val offset = getInlayHintOffset(info)
-			val renderer = LensRenderer(info)
-			val properties = InlayProperties().relatesToPrecedingText(true).disableSoftWrapping(true).priority(-offset)
-			
-			editor.inlayModel.addAfterLineEndElement(offset, properties, renderer)?.let {
-				inlays[highlighter] = it
-			}
-		}
-	}
-	
-	fun showAll(highlightersWithInfo: Collection<HighlighterWithInfo>) {
-		executeInInlayBatchMode(highlightersWithInfo.size) { highlightersWithInfo.forEach(::show) }
-	}
-	
-	fun hide(highlighter: RangeHighlighter) {
-		inlays.remove(highlighter)?.dispose()
-	}
-	
-	fun hideAll() {
-		executeInInlayBatchMode(inlays.size) { inlays.values.forEach(Inlay<*>::dispose) }
-		inlays.clear()
-	}
-	
-	private fun executeInInlayBatchMode(operations: Int, block: () -> Unit) {
-		editor.inlayModel.execute(operations > 1000, block)
-	}
-}

src/main/kotlin/com/chylex/intellij/inspectionlens/InspectionLens.kt

@@ -0,0 +1,80 @@
+package com.chylex.intellij.inspectionlens
+
+import com.chylex.intellij.inspectionlens.editor.EditorLensFeatures
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.components.service
+import com.intellij.openapi.fileEditor.FileEditorManager
+import com.intellij.openapi.fileEditor.TextEditor
+import com.intellij.openapi.project.ProjectManager
+
+/**
+ * Handles installation and uninstallation of plugin features in editors.
+ */
+internal object InspectionLens {
+	const val PLUGIN_ID = "com.chylex.intellij.inspectionlens"
+	
+	/**
+	 * Installs lenses into [editor].
+	 */
+	fun install(editor: TextEditor) {
+		EditorLensFeatures.install(editor.editor, service<InspectionLensPluginDisposableService>().intersect(editor))
+	}
+	
+	/**
+	 * Installs lenses into all open editors.
+	 */
+	fun install() {
+		forEachOpenEditor(::install)
+	}
+	
+	/**
+	 * Refreshes lenses in all open editors.
+	 */
+	private fun refresh() {
+		forEachOpenEditor {
+			EditorLensFeatures.refresh(it.editor)
+		}
+	}
+	
+	/**
+	 * Schedules a refresh of lenses in all open editors.
+	 */
+	fun scheduleRefresh() {
+		Refresh.schedule()
+	}
+	
+	/**
+	 * Executes [action] on all open editors.
+	 */
+	private inline fun forEachOpenEditor(action: (TextEditor) -> Unit) {
+		val projectManager = ProjectManager.getInstanceIfCreated() ?: return
+		
+		for (project in projectManager.openProjects.filterNot { it.isDisposed }) {
+			for (editor in FileEditorManager.getInstance(project).allEditors.filterIsInstance<TextEditor>()) {
+				action(editor)
+			}
+		}
+	}
+	
+	private object Refresh {
+		private var needsRefresh = false
+		
+		fun schedule() {
+			synchronized(this) {
+				if (!needsRefresh) {
+					needsRefresh = true
+					ApplicationManager.getApplication().invokeLater(this::run)
+				}
+			}
+		}
+		
+		private fun run() {
+			synchronized(this) {
+				if (needsRefresh) {
+					needsRefresh = false
+					refresh()
+				}
+			}
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/InspectionLensFileOpenedListener.kt

@@ -1,20 +1,20 @@
 package com.chylex.intellij.inspectionlens
 
 import com.intellij.openapi.fileEditor.FileEditorManager
-import com.intellij.openapi.fileEditor.FileEditorManagerListener
+import com.intellij.openapi.fileEditor.FileOpenedSyncListener
 import com.intellij.openapi.fileEditor.TextEditor
 import com.intellij.openapi.fileEditor.ex.FileEditorWithProvider
 import com.intellij.openapi.vfs.VirtualFile
 
 /**
- * Listens for newly opened editors, and installs a [LensMarkupModelListener] on them.
+ * Installs [InspectionLens] in newly opened editors.
  */
-class LensFileEditorListener : FileEditorManagerListener {
-	override fun fileOpenedSync(source: FileEditorManager, file: VirtualFile, editorsWithProviders: MutableList<FileEditorWithProvider>) {
+class InspectionLensFileOpenedListener : FileOpenedSyncListener {
+	override fun fileOpenedSync(source: FileEditorManager, file: VirtualFile, editorsWithProviders: List<FileEditorWithProvider>) {
 		for (editorWrapper in editorsWithProviders) {
 			val fileEditor = editorWrapper.fileEditor
 			if (fileEditor is TextEditor) {
-				LensMarkupModelListener.install(fileEditor)
+				InspectionLens.install(fileEditor)
 			}
 		}
 	}

src/main/kotlin/com/chylex/intellij/inspectionlens/InspectionLensPluginDisposableService.kt

@@ -1,10 +1,22 @@
 package com.chylex.intellij.inspectionlens
 
 import com.intellij.openapi.Disposable
+import com.intellij.openapi.components.Service
+import com.intellij.openapi.rd.createLifetime
+import com.intellij.openapi.rd.createNestedDisposable
+import com.jetbrains.rd.util.lifetime.Lifetime
 
 /**
  * Gets automatically disposed when the plugin is unloaded.
  */
+@Service
 class InspectionLensPluginDisposableService : Disposable {
+	/**
+	 * Creates a [Disposable] that will be disposed when either plugin is unloaded, or the [other] [Disposable] is disposed.
+	 */
+	fun intersect(other: Disposable): Disposable {
+		return Lifetime.intersect(createLifetime(), other.createLifetime()).createNestedDisposable("InspectionLensIntersectedLifetime")
+	}
+	
 	override fun dispose() {}
 }

src/main/kotlin/com/chylex/intellij/inspectionlens/InspectionLensPluginListener.kt

@@ -2,42 +2,14 @@ package com.chylex.intellij.inspectionlens
 
 import com.intellij.ide.plugins.DynamicPluginListener
 import com.intellij.ide.plugins.IdeaPluginDescriptor
-import com.intellij.openapi.fileEditor.FileEditorManager
-import com.intellij.openapi.fileEditor.TextEditor
-import com.intellij.openapi.project.ProjectManager
 
 /**
- * Handles dynamic plugin loading.
- * 
- * On load, it installs the [LensMarkupModelListener] to all open editors.
- * On unload, it removes all lenses from all open editors.
+ * Installs [InspectionLens] in open editors when the plugin is loaded.
  */
 class InspectionLensPluginListener : DynamicPluginListener {
-	companion object {
-		private const val PLUGIN_ID = "com.chylex.intellij.inspectionlens"
-		
-		private inline fun ProjectManager.forEachEditor(action: (TextEditor) -> Unit) {
-			for (project in this.openProjects.filterNot { it.isDisposed }) {
-				val fileEditorManager = FileEditorManager.getInstance(project)
-				
-				for (editor in fileEditorManager.allEditors.filterIsInstance<TextEditor>()) {
-					action(editor)
-				}
-			}
-		}
-	}
-	
 	override fun pluginLoaded(pluginDescriptor: IdeaPluginDescriptor) {
-		if (pluginDescriptor.pluginId.idString == PLUGIN_ID) {
-			ProjectManager.getInstanceIfCreated()?.forEachEditor(LensMarkupModelListener.Companion::install)
-		}
-	}
-	
-	override fun beforePluginUnload(pluginDescriptor: IdeaPluginDescriptor, isUpdate: Boolean) {
-		if (pluginDescriptor.pluginId.idString == PLUGIN_ID) {
-			ProjectManager.getInstanceIfCreated()?.forEachEditor {
-				EditorInlayLensManager.remove(it.editor)
-			}
+		if (pluginDescriptor.pluginId.idString == InspectionLens.PLUGIN_ID) {
+			InspectionLens.install()
 		}
 	}
 }

src/main/kotlin/com/chylex/intellij/inspectionlens/LensMarkupModelListener.kt

@@ -1,110 +0,0 @@
-package com.chylex.intellij.inspectionlens
-
-import com.chylex.intellij.inspectionlens.util.MultiParentDisposable
-import com.intellij.codeInsight.daemon.impl.HighlightInfo
-import com.intellij.lang.annotation.HighlightSeverity
-import com.intellij.openapi.application.ApplicationManager
-import com.intellij.openapi.editor.Editor
-import com.intellij.openapi.editor.ex.MarkupModelEx
-import com.intellij.openapi.editor.ex.RangeHighlighterEx
-import com.intellij.openapi.editor.impl.DocumentMarkupModel
-import com.intellij.openapi.editor.impl.event.MarkupModelListener
-import com.intellij.openapi.editor.markup.RangeHighlighter
-import com.intellij.openapi.fileEditor.TextEditor
-
-/**
- * Listens for inspection highlights and reports them to [EditorInlayLensManager].
- */
-class LensMarkupModelListener private constructor(editor: Editor) : MarkupModelListener {
-	private val lens = EditorInlayLensManager.getOrCreate(editor)
-	
-	override fun afterAdded(highlighter: RangeHighlighterEx) {
-		showIfValid(highlighter)
-	}
-	
-	override fun attributesChanged(highlighter: RangeHighlighterEx, renderersChanged: Boolean, fontStyleOrColorChanged: Boolean) {
-		showIfValid(highlighter)
-	}
-	
-	override fun beforeRemoved(highlighter: RangeHighlighterEx) {
-		lens.hide(highlighter)
-	}
-	
-	private fun showIfValid(highlighter: RangeHighlighter) {
-		runWithHighlighterIfValid(highlighter, lens::show, ::showAsynchronously)
-	}
-	
-	private fun showAllValid(highlighters: Array<RangeHighlighter>) {
-		val immediateHighlighters = mutableListOf<HighlighterWithInfo>()
-		
-		for (highlighter in highlighters) {
-			runWithHighlighterIfValid(highlighter, immediateHighlighters::add, ::showAsynchronously)
-		}
-		
-		lens.showAll(immediateHighlighters)
-	}
-	
-	private fun showAsynchronously(highlighterWithInfo: HighlighterWithInfo.Async) {
-		highlighterWithInfo.requestDescription {
-			if (highlighterWithInfo.highlighter.isValid && highlighterWithInfo.hasDescription) {
-				val application = ApplicationManager.getApplication()
-				if (application.isDispatchThread) {
-					lens.show(highlighterWithInfo)
-				}
-				else {
-					application.invokeLater {
-						lens.show(highlighterWithInfo)
-					}
-				}
-			}
-		}
-	}
-	
-	companion object {
-		private val MINIMUM_SEVERITY = HighlightSeverity.TEXT_ATTRIBUTES.myVal + 1
-		
-		private fun getHighlightInfoIfValid(highlighter: RangeHighlighter): HighlightInfo? {
-			return if (highlighter.isValid)
-				HighlightInfo.fromRangeHighlighter(highlighter)?.takeIf { it.severity.myVal >= MINIMUM_SEVERITY }
-			else
-				null
-		}
-		
-		private inline fun runWithHighlighterIfValid(highlighter: RangeHighlighter, actionForImmediate: (HighlighterWithInfo) -> Unit, actionForAsync: (HighlighterWithInfo.Async) -> Unit) {
-			val info = getHighlightInfoIfValid(highlighter)
-			if (info != null) {
-				processHighlighterWithInfo(HighlighterWithInfo.from(highlighter, info), actionForImmediate, actionForAsync)
-			}
-		}
-		
-		private inline fun processHighlighterWithInfo(highlighterWithInfo: HighlighterWithInfo, actionForImmediate: (HighlighterWithInfo) -> Unit, actionForAsync: (HighlighterWithInfo.Async) -> Unit) {
-			if (highlighterWithInfo is HighlighterWithInfo.Async) {
-				actionForAsync(highlighterWithInfo)
-			}
-			else if (highlighterWithInfo.hasDescription) {
-				actionForImmediate(highlighterWithInfo)
-			}
-		}
-		
-		/**
-		 * Attaches a new [LensMarkupModelListener] to the document model of the provided [TextEditor], and reports all existing inspection highlights to [EditorInlayLensManager].
-		 * 
-		 * The [LensMarkupModelListener] will be disposed when either the [TextEditor] is disposed, or via [InspectionLensPluginDisposableService] when the plugin is unloaded.
-		 */
-		fun install(textEditor: TextEditor) {
-			val editor = textEditor.editor
-			val markupModel = DocumentMarkupModel.forDocument(editor.document, editor.project, false)
-			if (markupModel is MarkupModelEx) {
-				val pluginDisposable = ApplicationManager.getApplication().getService(InspectionLensPluginDisposableService::class.java)
-				
-				val listenerDisposable = MultiParentDisposable()
-				listenerDisposable.registerWithParent(textEditor)
-				listenerDisposable.registerWithParent(pluginDisposable)
-				
-				val listener = LensMarkupModelListener(editor)
-				markupModel.addMarkupModelListener(listenerDisposable.self, listener)
-				listener.showAllValid(markupModel.allHighlighters)
-			}
-		}
-	}
-}

src/main/kotlin/com/chylex/intellij/inspectionlens/LensRenderer.kt

@@ -1,56 +0,0 @@
-package com.chylex.intellij.inspectionlens
-
-import com.intellij.codeInsight.daemon.impl.HighlightInfo
-import com.intellij.codeInsight.daemon.impl.HintRenderer
-import com.intellij.openapi.editor.Editor
-import com.intellij.openapi.editor.Inlay
-import com.intellij.openapi.editor.markup.TextAttributes
-import com.intellij.openapi.util.text.StringUtil
-import java.awt.Font
-import java.awt.Graphics
-import java.awt.Rectangle
-
-/**
- * Renders the text of an inspection lens.
- */
-class LensRenderer(info: HighlightInfo) : HintRenderer(null) {
-	private lateinit var severity: LensSeverity
-	
-	init {
-		setPropertiesFrom(info)
-	}
-	
-	fun setPropertiesFrom(info: HighlightInfo) {
-		text = getValidDescriptionText(info.description)
-		severity = LensSeverity.from(info.severity)
-	}
-	
-	override fun paint(inlay: Inlay<*>, g: Graphics, r: Rectangle, textAttributes: TextAttributes) {
-		fixBaselineForTextRendering(r)
-		super.paint(inlay, g, r, textAttributes)
-	}
-	
-	override fun getTextAttributes(editor: Editor): TextAttributes {
-		return ATTRIBUTES_SINGLETON.also { it.foregroundColor = severity.getColor(editor) }
-	}
-	
-	override fun useEditorFont(): Boolean {
-		return true
-	}
-	
-	private companion object {
-		private val ATTRIBUTES_SINGLETON = TextAttributes(null, null, null, null, Font.ITALIC)
-		
-		private fun getValidDescriptionText(text: String?): String {
-			return if (text.isNullOrBlank()) " " else addMissingPeriod(StringUtil.unescapeXmlEntities(StringUtil.stripHtml(text, " ")))
-		}
-		
-		private fun addMissingPeriod(text: String): String {
-			return if (text.endsWith('.')) text else "$text."
-		}
-		
-		private fun fixBaselineForTextRendering(rect: Rectangle) {
-			rect.y += 1
-		}
-	}
-}

src/main/kotlin/com/chylex/intellij/inspectionlens/LensSeverity.kt

@@ -1,59 +0,0 @@
-package com.chylex.intellij.inspectionlens
-
-import com.intellij.lang.annotation.HighlightSeverity
-import com.intellij.openapi.editor.Editor
-import com.intellij.ui.ColorUtil
-import java.awt.Color
-
-/**
- * Determines properties of inspection lenses based on severity.
- */
-enum class LensSeverity(color: Color, darkThemeBrightening: Int, lightThemeDarkening: Int) {
-	ERROR(
-		Color(158, 41, 39),
-		darkThemeBrightening = 4,
-		lightThemeDarkening = 1,
-	),
-	
-	WARNING(
-		Color(190, 145, 23),
-		darkThemeBrightening = 1,
-		lightThemeDarkening = 4,
-	),
-	
-	WEAK_WARNING(
-		Color(117, 109, 86),
-		darkThemeBrightening = 3,
-		lightThemeDarkening = 3,
-	),
-	
-	SERVER_PROBLEM(
-		Color(176, 97, 0),
-		darkThemeBrightening = 2,
-		lightThemeDarkening = 4,
-	),
-	
-	OTHER(
-		Color(128, 128, 128),
-		darkThemeBrightening = 2,
-		lightThemeDarkening = 1,
-	);
-	
-	private val darkThemeColor = ColorUtil.desaturate(ColorUtil.brighter(color, darkThemeBrightening), 2)
-	private val lightThemeColor = ColorUtil.saturate(ColorUtil.darker(color, lightThemeDarkening), 1)
-	
-	fun getColor(editor: Editor): Color {
-		val isDarkTheme = ColorUtil.isDark(editor.colorsScheme.defaultBackground)
-		return if (isDarkTheme) darkThemeColor else lightThemeColor
-	}
-	
-	companion object {
-		fun from(severity: HighlightSeverity) = when (severity) {
-			HighlightSeverity.ERROR                           -> ERROR
-			HighlightSeverity.WARNING                         -> WARNING
-			HighlightSeverity.WEAK_WARNING                    -> WEAK_WARNING
-			HighlightSeverity.GENERIC_SERVER_ERROR_OR_WARNING -> SERVER_PROBLEM
-			else                                              -> OTHER
-		}
-	}
-}

src/main/kotlin/com/chylex/intellij/inspectionlens/compatibility/GrazieSupport.kt

@@ -0,0 +1,15 @@
+package com.chylex.intellij.inspectionlens.compatibility
+
+import com.chylex.intellij.inspectionlens.editor.lens.LensSeverity
+import com.intellij.grazie.ide.TextProblemSeverities
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.startup.ProjectActivity
+
+class GrazieSupport : ProjectActivity {
+	override suspend fun execute(project: Project) {
+		LensSeverity.registerMapping(TextProblemSeverities.GRAMMAR_ERROR, LensSeverity.ERROR)
+		LensSeverity.registerMapping(TextProblemSeverities.STYLE_ERROR, LensSeverity.GRAZIE)
+		LensSeverity.registerMapping(TextProblemSeverities.STYLE_WARNING, LensSeverity.GRAZIE)
+		LensSeverity.registerMapping(TextProblemSeverities.STYLE_SUGGESTION, LensSeverity.GRAZIE)
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/compatibility/SpellCheckerSupport.kt

@@ -0,0 +1,23 @@
+package com.chylex.intellij.inspectionlens.compatibility
+
+import com.chylex.intellij.inspectionlens.editor.lens.LensSeverity
+import com.intellij.lang.annotation.HighlightSeverity
+import com.intellij.openapi.diagnostic.logger
+import com.intellij.profile.codeInspection.InspectionProfileManager
+import com.intellij.spellchecker.SpellCheckerSeveritiesProvider
+
+internal object SpellCheckerSupport {
+	private val log = logger<SpellCheckerSupport>()
+	
+	fun load() {
+		typoSeverity?.let { LensSeverity.registerMapping(it, LensSeverity.TYPO) }
+	}
+	
+	private val typoSeverity: HighlightSeverity?
+		get() = try {
+			SpellCheckerSeveritiesProvider.TYPO
+		} catch (e: NoClassDefFoundError) {
+			log.warn("Falling back to registered severity search due to ${e.javaClass.simpleName}: ${e.message}")
+			InspectionProfileManager.getInstance().severityRegistrar.getSeverity("TYPO")
+		}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/debug/ShowColorEditorAction.kt

@@ -0,0 +1,274 @@
+package com.chylex.intellij.inspectionlens.debug
+
+import com.chylex.intellij.inspectionlens.editor.lens.ColorGenerator
+import com.chylex.intellij.inspectionlens.editor.lens.ColorMode
+import com.chylex.intellij.inspectionlens.editor.lens.EditorLens
+import com.chylex.intellij.inspectionlens.editor.lens.LensSeverity
+import com.intellij.codeInsight.daemon.impl.HighlightInfo
+import com.intellij.codeInsight.daemon.impl.HighlightInfoType
+import com.intellij.grazie.ide.TextProblemSeverities
+import com.intellij.lang.annotation.HighlightSeverity
+import com.intellij.openapi.Disposable
+import com.intellij.openapi.actionSystem.ActionUpdateThread
+import com.intellij.openapi.actionSystem.AnAction
+import com.intellij.openapi.actionSystem.AnActionEvent
+import com.intellij.openapi.components.service
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.editor.EditorFactory
+import com.intellij.openapi.editor.colors.EditorColorsManager
+import com.intellij.openapi.editor.colors.EditorColorsScheme
+import com.intellij.openapi.editor.event.CaretEvent
+import com.intellij.openapi.editor.event.CaretListener
+import com.intellij.openapi.editor.event.SelectionEvent
+import com.intellij.openapi.editor.event.SelectionListener
+import com.intellij.openapi.editor.ex.EditorEx
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.ui.DialogPanel
+import com.intellij.openapi.ui.DialogWrapper
+import com.intellij.openapi.util.Disposer
+import com.intellij.openapi.util.Key
+import com.intellij.spellchecker.SpellCheckerSeveritiesProvider
+import com.intellij.ui.ColorUtil
+import com.intellij.ui.dsl.builder.Align
+import com.intellij.ui.dsl.builder.Cell
+import com.intellij.ui.dsl.builder.LabelPosition
+import com.intellij.ui.dsl.builder.Row
+import com.intellij.ui.dsl.builder.panel
+import com.intellij.ui.dsl.builder.selected
+import javax.swing.Action
+import javax.swing.JSlider
+
+class ShowColorEditorAction : AnAction() {
+	override fun getActionUpdateThread(): ActionUpdateThread {
+		return ActionUpdateThread.BGT
+	}
+	
+	override fun actionPerformed(e: AnActionEvent) {
+		Dialog(e.project).show()
+	}
+	
+	private class Dialog(project: Project?) : DialogWrapper(project) {
+		private val editorSyncer = EditorSyncer(disposable)
+		
+		init {
+			title = "Inspection Lens - Color Editor"
+			init()
+		}
+		
+		@Suppress("DuplicatedCode")
+		override fun createCenterPanel(): DialogPanel {
+			return panel {
+				row {
+					for (scheme in EditorColorsManager.getInstance().allSchemes.sortedWith(compareBy({ ColorUtil.isDark(it.defaultBackground) }, { it.displayName }))) {
+						createEditor(scheme)
+					}
+				}.resizableRow()
+				
+				row {
+					val generateColors = checkBox("Generate colors")
+						.selected(ColorGenerator.useGenerator)
+						.onChanged {
+							ColorGenerator.useGenerator = it.isSelected
+							refreshColors()
+						}
+					
+					slider(0, 15, 1, 5)
+						.label("Light theme desaturation", LabelPosition.TOP)
+						.enabledIf(generateColors.selected)
+						.bindColorValue(ColorGenerator::lightThemeDesaturation) { ColorGenerator.lightThemeDesaturation = it }
+					
+					slider(0, 15, 1, 5)
+						.label("Dark theme desaturation", LabelPosition.TOP)
+						.enabledIf(generateColors.selected)
+						.bindColorValue(ColorGenerator::darkThemeDesaturation) { ColorGenerator.darkThemeDesaturation = it }
+					
+					slider(0, 100, 5, 25)
+						.label("Light theme threshold", LabelPosition.TOP)
+						.enabledIf(generateColors.selected)
+						.bindColorValue(ColorGenerator::lightThemeThreshold) { ColorGenerator.lightThemeThreshold = it }
+					
+					slider(0, 100, 5, 25)
+						.label("Dark theme threshold", LabelPosition.TOP)
+						.enabledIf(generateColors.selected)
+						.bindColorValue(ColorGenerator::darkThemeThreshold) { ColorGenerator.darkThemeThreshold = it }
+					
+					slider(0, 25, 1, 5)
+						.label("Light theme line alpha", LabelPosition.TOP)
+						.enabledIf(generateColors.selected)
+						.bindColorValue(ColorGenerator::lightThemeLineAlpha) { ColorGenerator.lightThemeLineAlpha = it }
+					
+					slider(0, 25, 1, 5)
+						.label("Dark theme line alpha", LabelPosition.TOP)
+						.enabledIf(generateColors.selected)
+						.bindColorValue(ColorGenerator::darkThemeLineAlpha) { ColorGenerator.darkThemeLineAlpha = it }
+				}
+			}
+		}
+		
+		private fun Row.createEditor(scheme: EditorColorsScheme) {
+			val editor = createPreviewEditor(scheme, disposable)
+			editorSyncer.add(editor)
+			
+			panel {
+				row {
+					cell(editor.component)
+						.label(scheme.displayName, LabelPosition.TOP)
+						.align(Align.FILL)
+						.resizableColumn()
+				}.resizableRow()
+			}.resizableColumn()
+		}
+		
+		private fun Cell<JSlider>.bindColorValue(getter: () -> Int, setter: (Int) -> Unit): Cell<JSlider> {
+			return applyToComponent {
+				value = getter()
+				toolTipText = value.toString()
+				
+				addChangeListener {
+					toolTipText = value.toString()
+					setter(value)
+					refreshColors()
+				}
+			}
+		}
+		
+		private fun refreshColors() {
+			for (severity in LensSeverity.values()) {
+				severity.refreshColors()
+			}
+			
+			for (editor in editorSyncer.editors) {
+				recreateLenses(editor)
+			}
+		}
+		
+		override fun createActions(): Array<Action> {
+			return arrayOf(okAction)
+		}
+		
+		override fun getDimensionServiceKey(): String {
+			return this::class.java.name
+		}
+	}
+	
+	private class EditorSyncer(private val disposable: Disposable) {
+		val editors = mutableListOf<Editor>()
+		
+		fun add(editor: Editor) {
+			editors.add(editor)
+			
+			editor.caretModel.addCaretListener(object : CaretListener {
+				override fun caretPositionChanged(event: CaretEvent) {
+					syncCarets(editor)
+				}
+				
+				override fun caretAdded(event: CaretEvent) {
+					syncCarets(editor)
+				}
+				
+				override fun caretRemoved(event: CaretEvent) {
+					syncCarets(editor)
+				}
+			}, disposable)
+			
+			editor.selectionModel.addSelectionListener(object : SelectionListener {
+				override fun selectionChanged(e: SelectionEvent) {
+					syncCarets(editor)
+				}
+			}, disposable)
+		}
+		
+		private var isSyncing = false
+		
+		private fun syncCarets(mainEditor: Editor) {
+			val caretsAndSelections = mainEditor.caretModel.caretsAndSelections
+			
+			syncEditors(mainEditor) {
+				it.caretModel.caretsAndSelections = caretsAndSelections
+			}
+		}
+		
+		private inline fun syncEditors(mainEditor: Editor, action: (Editor) -> Unit) {
+			if (isSyncing) {
+				return
+			}
+			
+			isSyncing = true
+			try {
+				for (editor in editors) {
+					if (editor !== mainEditor) {
+						action(editor)
+					}
+				}
+			} finally {
+				isSyncing = false
+			}
+		}
+	}
+	
+	private companion object {
+		private val SEVERITIES = listOf(
+			HighlightSeverity.ERROR,
+			HighlightSeverity.WARNING,
+			HighlightSeverity.WEAK_WARNING,
+			HighlightSeverity.GENERIC_SERVER_ERROR_OR_WARNING,
+			TextProblemSeverities.STYLE_SUGGESTION,
+			SpellCheckerSeveritiesProvider.TYPO,
+			HighlightSeverity("Other", 50)
+		)
+		
+		private val LENSES_KEY = Key.create<MutableList<EditorLens>>("InspectionLens.ShowColorEditorAction.Lenses")
+		
+		private fun createPreviewEditor(scheme: EditorColorsScheme, disposable: Disposable): Editor {
+			val editorFactory = EditorFactory.getInstance()
+			
+			val document = editorFactory.createDocument(('A'..'Z').take(SEVERITIES.size * 3).joinToString(separator = "\n", postfix = "\n\n") { "$it = 0;" })
+			val editor = editorFactory.createViewer(document) as EditorEx
+			
+			editor.colorsScheme = scheme
+			editor.caretModel.moveToOffset(editor.document.textLength)
+			
+			with(editor.settings) {
+				additionalColumnsCount = 0
+				additionalLinesCount = 0
+				isIndentGuidesShown = false
+				isLineMarkerAreaShown = false
+				isLineNumbersShown = true
+				isRightMarginShown = false
+				isWhitespacesShown = true
+				setGutterIconsShown(false)
+			}
+			
+			ColorMode.setForEditor(editor, if (ColorUtil.isDark(scheme.defaultBackground)) ColorMode.ALWAYS_DARK else ColorMode.ALWAYS_LIGHT)
+			recreateLenses(editor)
+			
+			Disposer.register(disposable) { editorFactory.releaseEditor(editor) }
+			return editor
+		}
+		
+		private fun recreateLenses(editor: Editor) {
+			LENSES_KEY.get(editor)?.forEach(EditorLens::hide)
+			
+			val lenses = mutableListOf<EditorLens>()
+			LENSES_KEY.set(editor, lenses)
+			
+			for ((index, severity) in SEVERITIES.withIndex()) {
+				addLens(editor, severity, index, lenses)
+				addLens(editor, severity, (index * 2) + 1 + SEVERITIES.size, lenses)
+			}
+		}
+		
+		private fun addLens(editor: Editor, severity: HighlightSeverity, line: Int, list: MutableList<EditorLens>) {
+			val startOffset = editor.document.getLineStartOffset(line)
+			val endOffset = editor.document.getLineEndOffset(line)
+			
+			val highlightInfo = HighlightInfo.newHighlightInfo(HighlightInfoType.ERROR)
+				.severity(severity)
+				.range(startOffset, endOffset)
+				.descriptionAndTooltip("Example - ${severity.displayCapitalizedName}")
+				.createUnconditionally()
+			
+			EditorLens.show(editor, highlightInfo, service())?.let(list::add)
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/EditorLensFeatures.kt

@@ -0,0 +1,56 @@
+package com.chylex.intellij.inspectionlens.editor
+
+import com.intellij.openapi.Disposable
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.editor.ex.FoldingModelEx
+import com.intellij.openapi.editor.ex.MarkupModelEx
+import com.intellij.openapi.editor.impl.DocumentMarkupModel
+import com.intellij.openapi.util.Disposer
+import com.intellij.openapi.util.Key
+
+/**
+ * Manages Inspection Lens features for a single [Editor].
+ */
+internal class EditorLensFeatures private constructor(
+	editor: Editor,
+	private val markupModel: MarkupModelEx,
+	foldingModel: FoldingModelEx?,
+	disposable: Disposable
+) {
+	private val lensManager = EditorLensManager(editor)
+	private val lensManagerDispatcher = EditorLensManagerDispatcher(lensManager)
+	private val markupModelListener = LensMarkupModelListener(lensManagerDispatcher)
+	
+	init {
+		markupModel.addMarkupModelListener(disposable, markupModelListener)
+		markupModelListener.showAllValid(markupModel.allHighlighters)
+		
+		foldingModel?.addListener(LensFoldingModelListener(lensManager), disposable)
+	}
+	
+	private fun refresh() {
+		markupModelListener.hideAll()
+		markupModelListener.showAllValid(markupModel.allHighlighters)
+	}
+	
+	companion object {
+		private val EDITOR_KEY = Key<EditorLensFeatures>(EditorLensFeatures::class.java.name)
+		
+		fun install(editor: Editor, disposable: Disposable) {
+			if (editor.getUserData(EDITOR_KEY) != null) {
+				return
+			}
+			
+			val markupModel = DocumentMarkupModel.forDocument(editor.document, editor.project, false) as? MarkupModelEx ?: return
+			val foldingModel = editor.foldingModel as? FoldingModelEx
+			val features = EditorLensFeatures(editor, markupModel, foldingModel, disposable)
+			
+			editor.putUserData(EDITOR_KEY, features)
+			Disposer.register(disposable) { editor.putUserData(EDITOR_KEY, null) }
+		}
+		
+		fun refresh(editor: Editor) {
+			editor.getUserData(EDITOR_KEY)?.refresh()
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/EditorLensManager.kt

@@ -0,0 +1,97 @@
+package com.chylex.intellij.inspectionlens.editor
+
+import com.chylex.intellij.inspectionlens.editor.lens.EditorLens
+import com.chylex.intellij.inspectionlens.settings.LensSettingsState
+import com.intellij.openapi.components.service
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.editor.markup.RangeHighlighter
+import java.util.IdentityHashMap
+
+/**
+ * Manages visible inspection lenses for an [Editor].
+ */
+internal class EditorLensManager(private val editor: Editor) {
+	private val lenses = IdentityHashMap<RangeHighlighter, EditorLens>()
+	private val settings = service<LensSettingsState>()
+	
+	private fun show(highlighterWithInfo: HighlighterWithInfo) {
+		val (highlighter, info) = highlighterWithInfo
+		
+		if (!highlighter.isValid) {
+			return
+		}
+		
+		val existingLens = lenses[highlighter]
+		if (existingLens != null) {
+			if (existingLens.update(info, settings)) {
+				return
+			}
+			
+			existingLens.hide()
+		}
+		
+		val newLens = EditorLens.show(editor, info, settings)
+		if (newLens != null) {
+			lenses[highlighter] = newLens
+		}
+		else if (existingLens != null) {
+			lenses.remove(highlighter)
+		}
+	}
+	
+	private fun hide(highlighter: RangeHighlighter) {
+		lenses.remove(highlighter)?.hide()
+	}
+	
+	fun hideAll() {
+		executeInBatchMode(lenses.size) {
+			lenses.values.forEach(EditorLens::hide)
+			lenses.clear()
+		}
+	}
+	
+	fun execute(commands: Collection<Command>) {
+		executeInBatchMode(commands.size) {
+			commands.forEach { it.apply(this) }
+		}
+	}
+	
+	fun onFoldRegionsChanged() {
+		lenses.values.forEach(EditorLens::onFoldRegionsChanged)
+	}
+	
+	sealed interface Command {
+		fun apply(lensManager: EditorLensManager)
+		
+		class Show(private val highlighter: HighlighterWithInfo) : Command {
+			override fun apply(lensManager: EditorLensManager) {
+				lensManager.show(highlighter)
+			}
+		}
+		
+		class Hide(private val highlighter: RangeHighlighter) : Command {
+			override fun apply(lensManager: EditorLensManager) {
+				lensManager.hide(highlighter)
+			}
+		}
+		
+		object HideAll : Command {
+			override fun apply(lensManager: EditorLensManager) {
+				lensManager.hideAll()
+			}
+		}
+	}
+	
+	/**
+	 * Batch mode affects both inlays and highlighters used for line colors.
+	 */
+	@Suppress("ConvertLambdaToReference")
+	private inline fun executeInBatchMode(operations: Int, crossinline action: () -> Unit) {
+		if (operations > 1000) {
+			editor.inlayModel.execute(true) { action() }
+		}
+		else {
+			action()
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/EditorLensManagerDispatcher.kt

@@ -0,0 +1,45 @@
+package com.chylex.intellij.inspectionlens.editor
+
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.editor.markup.RangeHighlighter
+
+internal class EditorLensManagerDispatcher(private val lensManager: EditorLensManager) {
+	private var queuedItems = mutableListOf<EditorLensManager.Command>()
+	private var isEnqueued = false
+	
+	fun show(highlighterWithInfo: HighlighterWithInfo) {
+		enqueue(EditorLensManager.Command.Show(highlighterWithInfo))
+	}
+	
+	fun hide(highlighter: RangeHighlighter) {
+		enqueue(EditorLensManager.Command.Hide(highlighter))
+	}
+	
+	fun hideAll() {
+		enqueue(EditorLensManager.Command.HideAll)
+	}
+	
+	private fun enqueue(item: EditorLensManager.Command) {
+		synchronized(this) {
+			queuedItems.add(item)
+			
+			// Enqueue even if already on dispatch thread to debounce consecutive calls.
+			if (!isEnqueued) {
+				isEnqueued = true
+				ApplicationManager.getApplication().invokeLater(::process)
+			}
+		}
+	}
+	
+	private fun process() {
+		var itemsToProcess: List<EditorLensManager.Command>
+		
+		synchronized(this) {
+			itemsToProcess = queuedItems
+			queuedItems = mutableListOf()
+			isEnqueued = false
+		}
+		
+		lensManager.execute(itemsToProcess)
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/HighlighterWithInfo.kt

@@ -1,4 +1,4 @@
-package com.chylex.intellij.inspectionlens
+package com.chylex.intellij.inspectionlens.editor
 
 import com.intellij.codeInsight.daemon.impl.AsyncDescriptionSupplier
 import com.intellij.codeInsight.daemon.impl.HighlightInfo

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/LensFoldingModelListener.kt

@@ -0,0 +1,12 @@
+package com.chylex.intellij.inspectionlens.editor
+
+import com.intellij.openapi.editor.ex.FoldingListener
+
+/**
+ * Listens for code folding events and reports them to [EditorLensManager].
+ */
+internal class LensFoldingModelListener(private val lensManager: EditorLensManager) : FoldingListener {
+	override fun onFoldProcessingEnd() {
+		lensManager.onFoldRegionsChanged()
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/LensMarkupModelListener.kt

@@ -0,0 +1,69 @@
+package com.chylex.intellij.inspectionlens.editor
+
+import com.chylex.intellij.inspectionlens.settings.LensSettingsState
+import com.intellij.codeInsight.daemon.impl.HighlightInfo
+import com.intellij.openapi.components.service
+import com.intellij.openapi.editor.ex.RangeHighlighterEx
+import com.intellij.openapi.editor.impl.event.MarkupModelListener
+import com.intellij.openapi.editor.markup.RangeHighlighter
+
+/**
+ * Listens for inspection highlights and reports them to [EditorLensManager].
+ */
+internal class LensMarkupModelListener(private val lensManagerDispatcher: EditorLensManagerDispatcher) : MarkupModelListener {
+	private val settings = service<LensSettingsState>()
+	
+	override fun afterAdded(highlighter: RangeHighlighterEx) {
+		showIfValid(highlighter)
+	}
+	
+	override fun attributesChanged(highlighter: RangeHighlighterEx, renderersChanged: Boolean, fontStyleOrColorChanged: Boolean) {
+		showIfValid(highlighter)
+	}
+	
+	override fun beforeRemoved(highlighter: RangeHighlighterEx) {
+		if (getFilteredHighlightInfo(highlighter) != null) {
+			lensManagerDispatcher.hide(highlighter)
+		}
+	}
+	
+	private fun showIfValid(highlighter: RangeHighlighter) {
+		runWithHighlighterIfValid(highlighter, lensManagerDispatcher::show, ::showAsynchronously)
+	}
+	
+	private fun showAsynchronously(highlighterWithInfo: HighlighterWithInfo.Async) {
+		highlighterWithInfo.requestDescription {
+			if (highlighterWithInfo.highlighter.isValid && highlighterWithInfo.hasDescription) {
+				lensManagerDispatcher.show(highlighterWithInfo)
+			}
+		}
+	}
+	
+	fun showAllValid(highlighters: Array<RangeHighlighter>) {
+		highlighters.forEach(::showIfValid)
+	}
+	
+	fun hideAll() {
+		lensManagerDispatcher.hideAll()
+	}
+	
+	private fun getFilteredHighlightInfo(highlighter: RangeHighlighter): HighlightInfo? {
+		return HighlightInfo.fromRangeHighlighter(highlighter)?.takeIf { settings.severityFilter.test(it.severity) }
+	}
+	
+	private inline fun runWithHighlighterIfValid(highlighter: RangeHighlighter, actionForImmediate: (HighlighterWithInfo) -> Unit, actionForAsync: (HighlighterWithInfo.Async) -> Unit) {
+		val info = highlighter.takeIf { it.isValid }?.let(::getFilteredHighlightInfo)
+		if (info != null) {
+			processHighlighterWithInfo(HighlighterWithInfo.from(highlighter, info), actionForImmediate, actionForAsync)
+		}
+	}
+	
+	private inline fun processHighlighterWithInfo(highlighterWithInfo: HighlighterWithInfo, actionForImmediate: (HighlighterWithInfo) -> Unit, actionForAsync: (HighlighterWithInfo.Async) -> Unit) {
+		if (highlighterWithInfo is HighlighterWithInfo.Async) {
+			actionForAsync(highlighterWithInfo)
+		}
+		else if (highlighterWithInfo.hasDescription) {
+			actionForImmediate(highlighterWithInfo)
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/ColorGenerator.kt

@@ -0,0 +1,80 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.intellij.ui.ColorUtil
+import java.awt.Color
+import java.util.Locale
+import kotlin.math.abs
+import kotlin.math.pow
+
+internal object ColorGenerator {
+	private const val HACK_BRIGHTNESS_STEP = 1.025F
+	
+	var useGenerator = false
+	var lightThemeDesaturation = 1
+	var lightThemeThreshold = 32
+	var lightThemeLineAlpha = 10
+	var darkThemeDesaturation = 2
+	var darkThemeThreshold = 62
+	var darkThemeLineAlpha = 13
+	
+	data class Theme(
+		val lightThemeTextColor: Color,
+		val lightThemeLineColor: Color,
+		val darkThemeTextColor: Color,
+		val darkThemeLineColor: Color,
+	)
+
+	fun generate(name: String, baseColor: Color): Theme {
+		val lightThemeTextColor: Color = findColorWithPerceivedBrightness("$name / Light", baseColor, lightThemeDesaturation, 50 downTo -50) { it <= lightThemeThreshold }
+		val darkThemeTextColor: Color = findColorWithPerceivedBrightness("$name / Dark", baseColor, darkThemeDesaturation, -50..50) { it >= darkThemeThreshold }
+		
+		val lightThemeLineColor = ColorUtil.toAlpha(lightThemeTextColor, lightThemeLineAlpha)
+		val darkThemeLineColor = ColorUtil.toAlpha(darkThemeTextColor, darkThemeLineAlpha)
+		
+		return Theme(lightThemeTextColor, lightThemeLineColor, darkThemeTextColor, darkThemeLineColor)
+	}
+	
+	private fun findColorWithPerceivedBrightness(name: String, baseColor: Color, desaturation: Int, steps: IntProgression, testPerceivedBrightness: (Double) -> Boolean): Color {
+		var finalColor = baseColor
+		var finalBrightening = 0
+		var finalPerceivedBrightness = 0.0
+		
+		for (brightening in steps) {
+			finalColor = ColorUtil.desaturate(ColorUtil.hackBrightness(baseColor, abs(brightening), if (brightening < 0) 1F / HACK_BRIGHTNESS_STEP else HACK_BRIGHTNESS_STEP), desaturation)
+			finalBrightening = brightening
+			finalPerceivedBrightness = getPerceivedBrightness(finalColor)
+			
+			if (testPerceivedBrightness(finalPerceivedBrightness)) {
+				break
+			}
+		}
+		
+		println("$name - ${baseColor.red},${baseColor.green},${baseColor.blue} --> step $finalBrightening; brightness ${String.format(Locale.ROOT, "%.2f", finalPerceivedBrightness)}; color ${finalColor.red},${finalColor.green},${finalColor.blue}")
+		return finalColor
+	}
+	
+	private fun getLuminance(r: Double, g: Double, b: Double): Double {
+		return 0.2126 * srgbToLinearRgb(r) + 0.7152 * srgbToLinearRgb(g) + 0.0722 * srgbToLinearRgb(b)
+	}
+	
+	private fun srgbToLinearRgb(channel: Double): Double {
+		return if (channel <= 0.04045)
+			channel / 12.92
+		else
+			((channel + 0.055) / 1.055).pow(2.4)
+	}
+	
+	private fun getPerceivedBrightness(luminance: Double): Double {
+		return if (luminance <= (216.0 / 24389.0))
+			luminance * (24389.0 / 27.0)
+		else
+			luminance.pow(1.0 / 3.0) * 116 - 16
+	}
+	
+	private fun getPerceivedBrightness(color: Color): Double {
+		val r = color.red / 255.0
+		val g = color.green / 255.0
+		val b = color.blue / 255.0
+		return getPerceivedBrightness(getLuminance(r, g, b))
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/ColorMode.kt

@@ -0,0 +1,35 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.util.Key
+import com.intellij.ui.JBColor
+import java.awt.Color
+import java.util.EnumMap
+
+internal enum class ColorMode {
+	AUTO,
+	ALWAYS_LIGHT,
+	ALWAYS_DARK;
+	
+	companion object {
+		private val KEY = Key.create<ColorMode>("InspectionLens.ColorMode")
+		
+		fun getFromEditor(editor: Editor): ColorMode {
+			return KEY.get(editor, AUTO)
+		}
+		
+		fun setForEditor(editor: Editor, colorMode: ColorMode) {
+			KEY.set(editor, colorMode)
+		}
+		
+		inline fun createColorAttributes(lightThemeColor: Color, darkThemeColor: Color, attributesFactory: (JBColor) -> LensSeverityTextAttributes): EnumMap<ColorMode, LensSeverityTextAttributes> {
+			val result = EnumMap<ColorMode, LensSeverityTextAttributes>(ColorMode::class.java)
+			
+			result[AUTO] = attributesFactory(JBColor(lightThemeColor, darkThemeColor))
+			result[ALWAYS_LIGHT] = attributesFactory(JBColor(lightThemeColor, lightThemeColor))
+			result[ALWAYS_DARK] = attributesFactory(JBColor(darkThemeColor, darkThemeColor))
+			
+			return result
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/EditorLens.kt

@@ -0,0 +1,43 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.chylex.intellij.inspectionlens.settings.LensSettingsState
+import com.intellij.codeInsight.daemon.impl.HighlightInfo
+import com.intellij.openapi.editor.Editor
+
+internal class EditorLens private constructor(private var inlay: EditorLensInlay, private var lineBackground: EditorLensLineBackground, private var severity: LensSeverity) {
+	fun update(info: HighlightInfo, settings: LensSettingsState): Boolean {
+		val editor = inlay.editor
+		val oldSeverity = severity
+		
+		severity = LensSeverity.from(info.severity)
+		
+		if (!inlay.tryUpdate(info)) {
+			inlay = EditorLensInlay.show(editor, info, settings) ?: return false
+		}
+		
+		if (lineBackground.isInvalid || oldSeverity != severity) {
+			lineBackground.hide(editor)
+			lineBackground = EditorLensLineBackground.show(editor, info)
+		}
+		
+		return true
+	}
+	
+	fun onFoldRegionsChanged() {
+		lineBackground.onFoldRegionsChanged(inlay.editor, severity)
+	}
+	
+	fun hide() {
+		inlay.hide()
+		lineBackground.hide(inlay.editor)
+	}
+	
+	companion object {
+		fun show(editor: Editor, info: HighlightInfo, settings: LensSettingsState): EditorLens? {
+			val inlay = EditorLensInlay.show(editor, info, settings) ?: return null
+			val lineBackground = EditorLensLineBackground.show(editor, info)
+			val severity = LensSeverity.from(info.severity)
+			return EditorLens(inlay, lineBackground, severity)
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/EditorLensInlay.kt

@@ -0,0 +1,76 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.chylex.intellij.inspectionlens.settings.LensSettingsState
+import com.intellij.codeInsight.daemon.impl.HighlightInfo
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.editor.Inlay
+import com.intellij.openapi.editor.InlayProperties
+
+@JvmInline
+internal value class EditorLensInlay(private val inlay: Inlay<LensRenderer>) {
+	val editor
+		get() = inlay.editor
+	
+	fun tryUpdate(info: HighlightInfo): Boolean {
+		if (!inlay.isValid) {
+			return false
+		}
+		
+		inlay.renderer.setPropertiesFrom(info)
+		inlay.update()
+		return true
+	}
+	
+	fun hide() {
+		inlay.dispose()
+	}
+	
+	companion object {
+		fun show(editor: Editor, info: HighlightInfo, settings: LensSettingsState): EditorLensInlay? {
+			val offset = getInlayHintOffset(info)
+			val priority = getInlayHintPriority(editor, info)
+			val renderer = LensRenderer(info, settings)
+			
+			val properties = InlayProperties()
+				.relatesToPrecedingText(true)
+				.disableSoftWrapping(true)
+				.priority(priority)
+			
+			return editor.inlayModel.addAfterLineEndElement(offset, properties, renderer)
+				?.also(renderer::setInlay)
+				?.let(::EditorLensInlay)
+		}
+		
+		/**
+		 * Highest allowed severity for the purposes of sorting multiple highlights at the same offset.
+		 * The value is a little higher than the highest [com.intellij.lang.annotation.HighlightSeverity], in case severities with higher values are introduced in the future.
+		 */
+		private const val MAXIMUM_SEVERITY = 500
+		private const val MAXIMUM_POSITION = ((Int.MAX_VALUE / MAXIMUM_SEVERITY) * 2) - 1
+		
+		private fun getInlayHintOffset(info: HighlightInfo): Int {
+			// Ensures a highlight at the end of a line does not overflow to the next line.
+			return info.actualEndOffset - 1
+		}
+		
+		fun getInlayHintPriority(position: Int, severity: Int): Int {
+			// Sorts highlights first by position on the line, then by severity.
+			val positionBucket = position.coerceIn(0, MAXIMUM_POSITION) * MAXIMUM_SEVERITY
+			// The multiplication can overflow, but subtracting overflowed result from Int.MAX_VALUE does not break continuity.
+			val positionFactor = Integer.MAX_VALUE - positionBucket
+			val severityFactor = severity.coerceIn(0, MAXIMUM_SEVERITY) - MAXIMUM_SEVERITY
+			return positionFactor + severityFactor
+		}
+		
+		private fun getInlayHintPriority(editor: Editor, info: HighlightInfo): Int {
+			val startOffset = info.actualStartOffset
+			val positionOnLine = startOffset - getLineStartOffset(editor, startOffset)
+			return getInlayHintPriority(positionOnLine, info.severity.myVal)
+		}
+		
+		private fun getLineStartOffset(editor: Editor, offset: Int): Int {
+			val position = editor.offsetToLogicalPosition(offset)
+			return editor.document.getLineStartOffset(position.line)
+		}	
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/EditorLensLineBackground.kt

@@ -0,0 +1,49 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.intellij.codeInsight.daemon.impl.HighlightInfo
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.editor.ex.RangeHighlighterEx
+import com.intellij.openapi.editor.markup.HighlighterLayer
+import com.intellij.openapi.editor.markup.HighlighterTargetArea.LINES_IN_RANGE
+import com.intellij.openapi.editor.markup.RangeHighlighter
+import com.intellij.openapi.editor.markup.TextAttributes
+
+@JvmInline
+internal value class EditorLensLineBackground(private val highlighter: RangeHighlighter) {
+	val isInvalid
+		get() = !highlighter.isValid
+	
+	fun onFoldRegionsChanged(editor: Editor, severity: LensSeverity) {
+		if (highlighter is RangeHighlighterEx) {
+			highlighter.textAttributes = getAttributes(editor, highlighter.startOffset, highlighter.endOffset, severity)
+		}
+	}
+	
+	fun hide(editor: Editor) {
+		editor.markupModel.removeHighlighter(highlighter)
+	}
+	
+	companion object {
+		fun show(editor: Editor, info: HighlightInfo): EditorLensLineBackground {
+			val startOffset = info.actualStartOffset
+			val endOffset = (info.actualEndOffset - 1).coerceAtLeast(startOffset)
+			
+			val severity = LensSeverity.from(info.severity)
+			val layer = getHighlightLayer(severity)
+			val attributes = getAttributes(editor, startOffset, endOffset, severity)
+			
+			return EditorLensLineBackground(editor.markupModel.addRangeHighlighter(startOffset, endOffset, layer, attributes, LINES_IN_RANGE))
+		}
+		
+		private fun getHighlightLayer(severity: LensSeverity): Int {
+			return HighlighterLayer.CARET_ROW - 100 - severity.ordinal
+		}
+		
+		private fun getAttributes(editor: Editor, startOffset: Int, endOffset: Int, severity: LensSeverity): TextAttributes? {
+			return if (editor.foldingModel.let { it.isOffsetCollapsed(startOffset) || it.isOffsetCollapsed(endOffset) })
+				null
+			else
+				severity.getLineAttributes(ColorMode.getFromEditor(editor))
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/IntentionsPopup.kt

@@ -0,0 +1,36 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.intellij.codeInsight.daemon.impl.IntentionsUI
+import com.intellij.codeInsight.hint.HintManager
+import com.intellij.codeInsight.intention.impl.ShowIntentionActionsHandler
+import com.intellij.lang.LangBundle
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiDocumentManager
+import com.intellij.psi.PsiFile
+import com.intellij.psi.util.PsiUtilBase
+
+internal object IntentionsPopup {
+	fun show(editor: Editor) {
+		if (!tryShow(editor)) {
+			HintManager.getInstance().showInformationHint(editor, LangBundle.message("hint.text.no.context.actions.available.at.this.location"))
+		}
+	}
+	
+	private fun tryShow(editor: Editor): Boolean {
+		val project = editor.project ?: return false
+		val file = PsiUtilBase.getPsiFileInEditor(editor, project) ?: return false
+		
+		PsiDocumentManager.getInstance(project).commitAllDocuments()
+		IntentionsUI.getInstance(project).hide()
+		
+		HANDLER.showIntentionHint(project, editor, file, showFeedbackOnEmptyMenu = true)
+		return true
+	}
+	
+	private val HANDLER = object : ShowIntentionActionsHandler() {
+		public override fun showIntentionHint(project: Project, editor: Editor, file: PsiFile, showFeedbackOnEmptyMenu: Boolean) {
+			super.showIntentionHint(project, editor, file, showFeedbackOnEmptyMenu)
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/LensRenderer.kt

@@ -0,0 +1,185 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.chylex.intellij.inspectionlens.settings.LensSettingsState
+import com.intellij.codeInsight.daemon.impl.HighlightInfo
+import com.intellij.codeInsight.daemon.impl.HintRenderer
+import com.intellij.codeInsight.hints.presentation.InputHandler
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.editor.Inlay
+import com.intellij.openapi.editor.ScrollType
+import com.intellij.openapi.editor.colors.EditorFontType
+import com.intellij.openapi.editor.ex.EditorEx
+import com.intellij.openapi.editor.impl.EditorImpl
+import com.intellij.openapi.editor.markup.TextAttributes
+import com.intellij.openapi.util.text.StringUtil
+import com.intellij.ui.paint.EffectPainter
+import java.awt.Cursor
+import java.awt.Graphics
+import java.awt.Graphics2D
+import java.awt.Point
+import java.awt.Rectangle
+import java.awt.event.MouseEvent
+import java.util.regex.Pattern
+import javax.swing.SwingUtilities
+
+/**
+ * Renders the text of an inspection lens.
+ */
+class LensRenderer(private var info: HighlightInfo, settings: LensSettingsState) : HintRenderer(null), InputHandler {
+	private val useEditorFont = settings.useEditorFont
+	private lateinit var inlay: Inlay<*>
+	private lateinit var severity: LensSeverity
+	private var extraRightPadding = 0
+	private var hovered = false
+	
+	init {
+		setPropertiesFrom(info)
+	}
+	
+	fun setInlay(inlay: Inlay<*>) {
+		check(!this::inlay.isInitialized) { "Inlay already set" }
+		this.inlay = inlay
+	}
+	
+	fun setPropertiesFrom(info: HighlightInfo) {
+		this.info = info
+		val description = getValidDescriptionText(info.description)
+		
+		text = description
+		severity = LensSeverity.from(info.severity)
+		extraRightPadding = if (description.lastOrNull() == '.') 2 else 0
+	}
+	
+	override fun paint(inlay: Inlay<*>, g: Graphics, r: Rectangle, textAttributes: TextAttributes) {
+		fixBaselineForTextRendering(r)
+		super.paint(inlay, g, r, textAttributes)
+		
+		if (hovered) {
+			paintHoverEffect(inlay, g, r)
+		}
+	}
+	
+	private fun paintHoverEffect(inlay: Inlay<*>, g: Graphics, r: Rectangle) {
+		val editor = inlay.editor
+		if (editor !is EditorImpl) {
+			return
+		}
+		
+		val font = editor.colorsScheme.getFont(EditorFontType.PLAIN)
+		val x = r.x + TEXT_HORIZONTAL_PADDING
+		val y = r.y + editor.ascent + 1
+		val w = inlay.widthInPixels - UNDERLINE_WIDTH_REDUCTION - extraRightPadding
+		val h = editor.descent
+		
+		g.color = getTextAttributes(editor).foregroundColor
+		EffectPainter.LINE_UNDERSCORE.paint(g as Graphics2D, x, y, w, h, font)
+	}
+	
+	override fun getTextAttributes(editor: Editor): TextAttributes {
+		return severity.getTextAttributes(ColorMode.getFromEditor(editor))
+	}
+	
+	override fun useEditorFont(): Boolean {
+		return useEditorFont
+	}
+	
+	override fun mouseMoved(event: MouseEvent, translated: Point) {
+		setHovered(isHoveringText(translated))
+	}
+	
+	override fun mouseExited() {
+		setHovered(false)
+	}
+	
+	private fun setHovered(hovered: Boolean) {
+		if (this.hovered == hovered) {
+			return
+		}
+		
+		this.hovered = hovered
+		
+		val editor = inlay.editor
+		if (editor is EditorEx) {
+			val cursor = if (hovered) Cursor.getPredefinedCursor(Cursor.HAND_CURSOR) else null
+			editor.setCustomCursor(this::class.java, cursor)
+		}
+		
+		inlay.repaint()
+	}
+	
+	override fun mousePressed(event: MouseEvent, translated: Point) {
+		if (!isHoveringText(translated)) {
+			return
+		}
+		
+		if (SwingUtilities.isLeftMouseButton(event) || SwingUtilities.isMiddleMouseButton(event)) {
+			event.consume()
+			
+			val editor = inlay.editor
+			moveToOffset(editor, info.actualStartOffset)
+			
+			if (SwingUtilities.isLeftMouseButton(event)) {
+				IntentionsPopup.show(editor)
+			}
+		}
+	}
+	
+	private fun isHoveringText(point: Point): Boolean {
+		return point.x >= HOVER_HORIZONTAL_PADDING
+			&& point.y >= 4
+			&& point.x < inlay.widthInPixels - HOVER_HORIZONTAL_PADDING - extraRightPadding
+			&& point.y < inlay.heightInPixels - 1
+	}
+	
+	private companion object {
+		/**
+		 * [HintRenderer.paintHint] renders padding around text, but not around effects.
+		 */
+		private const val TEXT_HORIZONTAL_PADDING = 7
+		private const val HOVER_HORIZONTAL_PADDING = TEXT_HORIZONTAL_PADDING - 2
+		private const val UNDERLINE_WIDTH_REDUCTION = (TEXT_HORIZONTAL_PADDING * 2) - 1
+		
+		private const val MAX_DESCRIPTION_LENGTH = 120
+		
+		/**
+		 * Kotlin compiler inspections have an `[UPPERCASE_TAG]` at the beginning.
+		 */
+		private val UPPERCASE_TAG_REGEX = Pattern.compile("^\\[[A-Z_]+] ")
+		
+		private fun getValidDescriptionText(text: String?): String {
+			return if (text.isNullOrBlank()) " " else addEllipsisOrMissingPeriod(unescapeHtmlEntities(stripUppercaseTag(text)))
+		}
+		
+		private fun stripUppercaseTag(text: String): String {
+			if (text.startsWith('[')) {
+				val matcher = UPPERCASE_TAG_REGEX.matcher(text)
+				if (matcher.find()) {
+					return text.substring(matcher.end())
+				}
+			}
+			
+			return text
+		}
+		
+		private fun unescapeHtmlEntities(text: String): String {
+			return if (text.contains('&')) StringUtil.unescapeXmlEntities(text) else text
+		}
+		
+		private fun addEllipsisOrMissingPeriod(text: String): String {
+			return when {
+				text.length > MAX_DESCRIPTION_LENGTH -> text.take(MAX_DESCRIPTION_LENGTH).trimEnd { it.isWhitespace() || it == '.' } + "…"
+				!text.endsWith('.')                  -> "$text."
+				else                                 -> text
+			}
+		}
+		
+		private fun fixBaselineForTextRendering(rect: Rectangle) {
+			rect.y += 1
+		}
+		
+		private fun moveToOffset(editor: Editor, offset: Int) {
+			editor.caretModel.moveToOffset(offset)
+			editor.scrollingModel.scrollToCaret(ScrollType.MAKE_VISIBLE)
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/LensSeverity.kt

@@ -0,0 +1,88 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.chylex.intellij.inspectionlens.InspectionLens
+import com.chylex.intellij.inspectionlens.compatibility.SpellCheckerSupport
+import com.chylex.intellij.inspectionlens.editor.lens.ColorMode.Companion.createColorAttributes
+import com.intellij.lang.annotation.HighlightSeverity
+import com.intellij.ui.ColorUtil
+import com.intellij.ui.ColorUtil.toAlpha
+import java.awt.Color
+import java.awt.Font
+import java.util.Collections
+import java.util.EnumMap
+
+/**
+ * Determines properties of inspection lenses based on severity.
+ */
+@Suppress("UseJBColor", "InspectionUsingGrayColors")
+enum class LensSeverity(private val baseColor: Color, private val lightThemeDarkening: Int, private val darkThemeBrightening: Int) {
+	ERROR          (Color(158,  41,  39), lightThemeDarkening = 2, darkThemeBrightening = 4),
+	WARNING        (Color(190, 145,  23), lightThemeDarkening = 5, darkThemeBrightening = 1),
+	WEAK_WARNING   (Color(117, 109,  86), lightThemeDarkening = 4, darkThemeBrightening = 4),
+	SERVER_PROBLEM (Color(176,  97,   0), lightThemeDarkening = 5, darkThemeBrightening = 2),
+	GRAZIE         (Color( 53, 146, 196), lightThemeDarkening = 3, darkThemeBrightening = 1),
+	TYPO           (Color( 73, 156,  84), lightThemeDarkening = 4, darkThemeBrightening = 1),
+	OTHER          (Color(128, 128, 128), lightThemeDarkening = 2, darkThemeBrightening = 2);
+	
+	private lateinit var textAttributes: EnumMap<ColorMode, LensSeverityTextAttributes>
+	private lateinit var lineAttributes: EnumMap<ColorMode, LensSeverityTextAttributes>
+	
+	init {
+		refreshColors()
+	}
+	
+	internal fun refreshColors() {
+		val theme = if (ColorGenerator.useGenerator) {
+			ColorGenerator.generate(name, baseColor)
+		}
+		else {
+			val lightThemeTextColor = ColorUtil.saturate(ColorUtil.darker(baseColor, lightThemeDarkening), 1)
+			val darkThemeTextColor = ColorUtil.desaturate(ColorUtil.brighter(baseColor, darkThemeBrightening), 2)
+			
+			val lightThemeLineColor = toAlpha(lightThemeTextColor, 10)
+			val darkThemeLineColor = toAlpha(darkThemeTextColor, 13)
+			
+			ColorGenerator.Theme(lightThemeTextColor, lightThemeLineColor, darkThemeTextColor, darkThemeLineColor)
+		}
+		
+		textAttributes = createColorAttributes(theme.lightThemeTextColor, theme.darkThemeTextColor) { LensSeverityTextAttributes(foregroundColor = it, fontStyle = Font.ITALIC) }
+		lineAttributes = createColorAttributes(theme.lightThemeLineColor, theme.darkThemeLineColor) { LensSeverityTextAttributes(backgroundColor = it) }
+	}
+	
+	internal fun getTextAttributes(colorMode: ColorMode): LensSeverityTextAttributes {
+		return textAttributes.getValue(colorMode)
+	}
+	
+	internal fun getLineAttributes(colorMode: ColorMode): LensSeverityTextAttributes {
+		return lineAttributes.getValue(colorMode)
+	}
+	
+	companion object {
+		private val mapping = Collections.synchronizedMap(mapOf(
+			HighlightSeverity.ERROR                           to ERROR,
+			HighlightSeverity.WARNING                         to WARNING,
+			HighlightSeverity.WEAK_WARNING                    to WEAK_WARNING,
+			HighlightSeverity.GENERIC_SERVER_ERROR_OR_WARNING to SERVER_PROBLEM,
+		))
+		
+		init {
+			SpellCheckerSupport.load()
+		}
+		
+		/**
+		 * Registers a mapping from a [HighlightSeverity] to a [LensSeverity], and refreshes all open editors.
+		 */
+		internal fun registerMapping(severity: HighlightSeverity, lensSeverity: LensSeverity) {
+			if (mapping.put(severity, lensSeverity) != lensSeverity) {
+				InspectionLens.scheduleRefresh()
+			}
+		}
+		
+		/**
+		 * Returns the [LensSeverity] associated with the [HighlightSeverity], or [OTHER] if no explicit mapping is found.
+		 */
+		fun from(severity: HighlightSeverity): LensSeverity {
+			return mapping.getOrDefault(severity, OTHER)
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/LensSeverityFilter.kt

@@ -0,0 +1,31 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.intellij.codeInsight.daemon.impl.SeverityRegistrar
+import com.intellij.lang.annotation.HighlightSeverity
+import java.util.function.Predicate
+
+class LensSeverityFilter(private val hiddenSeverityIds: Set<String>, private val showUnknownSeverities: Boolean) : Predicate<HighlightSeverity> {
+	private val knownSeverityIds = getSupportedSeverities().mapTo(HashSet(), HighlightSeverity::getName)
+	
+	override fun test(severity: HighlightSeverity): Boolean {
+		if (!isSupported(severity)) {
+			return false
+		}
+		
+		return if (severity.name in knownSeverityIds)
+			severity.name !in hiddenSeverityIds
+		else
+			showUnknownSeverities
+	}
+	
+	companion object {
+		@Suppress("DEPRECATION")
+		private fun isSupported(severity: HighlightSeverity): Boolean {
+			return severity > HighlightSeverity.TEXT_ATTRIBUTES && severity !== HighlightSeverity.INFO
+		}
+		
+		fun getSupportedSeverities(registrar: SeverityRegistrar = SeverityRegistrar.getSeverityRegistrar(null)): List<HighlightSeverity> {
+			return registrar.allSeverities.filter(::isSupported)
+		}
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/editor/lens/LensSeverityTextAttributes.kt

@@ -0,0 +1,23 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.intellij.openapi.editor.markup.UnmodifiableTextAttributes
+import com.intellij.ui.JBColor
+import java.awt.Font
+
+class LensSeverityTextAttributes(
+	private val foregroundColor: JBColor? = null,
+	private val backgroundColor: JBColor? = null,
+	private val fontStyle: Int = Font.PLAIN,
+) : UnmodifiableTextAttributes() {
+	override fun getForegroundColor(): JBColor? {
+		return foregroundColor
+	}
+	
+	override fun getBackgroundColor(): JBColor? {
+		return backgroundColor
+	}
+	
+	override fun getFontType(): Int {
+		return fontStyle
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/settings/LensApplicationConfigurable.kt

@@ -0,0 +1,129 @@
+package com.chylex.intellij.inspectionlens.settings
+
+import com.chylex.intellij.inspectionlens.editor.lens.LensSeverityFilter
+import com.intellij.codeInsight.daemon.impl.SeverityRegistrar
+import com.intellij.lang.annotation.HighlightSeverity
+import com.intellij.openapi.components.service
+import com.intellij.openapi.editor.event.SelectionEvent
+import com.intellij.openapi.editor.event.SelectionListener
+import com.intellij.openapi.editor.markup.TextAttributes
+import com.intellij.openapi.options.BoundConfigurable
+import com.intellij.openapi.options.ConfigurableWithId
+import com.intellij.openapi.ui.DialogPanel
+import com.intellij.openapi.util.Disposer
+import com.intellij.ui.DisabledTraversalPolicy
+import com.intellij.ui.EditorTextFieldCellRenderer.SimpleRendererComponent
+import com.intellij.ui.components.JBCheckBox
+import com.intellij.ui.dsl.builder.Cell
+import com.intellij.ui.dsl.builder.RightGap
+import com.intellij.ui.dsl.builder.Row
+import com.intellij.ui.dsl.builder.RowLayout
+import com.intellij.ui.dsl.builder.bindSelected
+import com.intellij.ui.dsl.builder.panel
+import java.awt.Cursor
+
+class LensApplicationConfigurable : BoundConfigurable("Inspection Lens"), ConfigurableWithId {
+	companion object {
+		const val ID = "InspectionLens"
+	}
+	
+	private data class DisplayedSeverity(
+		val id: String,
+		val severity: StoredSeverity,
+		val textAttributes: TextAttributes? = null,
+	) {
+		constructor(
+			severity: HighlightSeverity,
+			registrar: SeverityRegistrar,
+		) : this(
+			id = severity.name,
+			severity = StoredSeverity(severity),
+			textAttributes = registrar.getHighlightInfoTypeBySeverity(severity).attributesKey.defaultAttributes
+		)
+	}
+	
+	private val settingsService = service<LensSettingsState>()
+	
+	private val allSeverities by lazy(LazyThreadSafetyMode.NONE) {
+		val settings = settingsService.state
+		val registrar = SeverityRegistrar.getSeverityRegistrar(null)
+		
+		val knownSeverities = LensSeverityFilter.getSupportedSeverities(registrar).map { DisplayedSeverity(it, registrar) }
+		val knownSeverityIds = knownSeverities.mapTo(HashSet(), DisplayedSeverity::id)
+		
+		// Update names and priorities of stored severities.
+		for ((id, knownSeverity, _) in knownSeverities) {
+			val storedSeverity = settings.hiddenSeverities[id]
+			if (storedSeverity != null && storedSeverity != knownSeverity) {
+				settings.hiddenSeverities[id] = knownSeverity
+			}
+		}
+		
+		val unknownSeverities = settings.hiddenSeverities.entries
+			.filterNot { it.key in knownSeverityIds }
+			.map { DisplayedSeverity(it.key, it.value) }
+		
+		(knownSeverities + unknownSeverities).sortedByDescending { it.severity.priority }
+	}
+	
+	override fun getId(): String {
+		return ID
+	}
+	
+	override fun createPanel(): DialogPanel {
+		val settings = settingsService.state
+		
+		return panel {
+			group("Shown Severities") {
+				for ((id, severity, textAttributes) in allSeverities) {
+					row {
+						checkBox(severity.name)
+							.bindSelectedToNotIn(settings.hiddenSeverities, id, severity)
+							.gap(RightGap.COLUMNS)
+						
+						labelWithAttributes("Example", textAttributes)
+					}.layout(RowLayout.PARENT_GRID)
+				}
+				
+				row {
+					checkBox("Other").bindSelected(settings::showUnknownSeverities)
+				}
+			}
+			
+			group("Appearance") {
+				row {
+					checkBox("Use editor font").bindSelected(settings::useEditorFont)
+				}
+			}
+		}
+	}
+	
+	private fun <K, V> Cell<JBCheckBox>.bindSelectedToNotIn(collection: MutableMap<K, V>, key: K, value: V): Cell<JBCheckBox> {
+		return bindSelected({ key !in collection }, { if (it) collection.remove(key) else collection[key] = value })
+	}
+	
+	private fun Row.labelWithAttributes(text: String, textAttributes: TextAttributes?): Cell<SimpleRendererComponent> {
+		val label = SimpleRendererComponent(null, null, true)
+		label.setText(text, textAttributes, false)
+		label.focusTraversalPolicy = DisabledTraversalPolicy()
+		
+		val editor = label.editor
+		editor.setCustomCursor(this, Cursor.getDefaultCursor())
+		editor.contentComponent.setOpaque(false)
+		editor.selectionModel.addSelectionListener(object : SelectionListener {
+			override fun selectionChanged(e: SelectionEvent) {
+				if (!e.newRange.isEmpty) {
+					editor.selectionModel.removeSelection(true)
+				}
+			}
+		})
+		
+		Disposer.register(disposable!!, label)
+		return cell(label)
+	}
+	
+	override fun apply() {
+		super.apply()
+		settingsService.update()
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/settings/LensSettingsState.kt

@@ -0,0 +1,48 @@
+package com.chylex.intellij.inspectionlens.settings
+
+import com.chylex.intellij.inspectionlens.InspectionLens
+import com.chylex.intellij.inspectionlens.editor.lens.LensSeverityFilter
+import com.intellij.openapi.components.BaseState
+import com.intellij.openapi.components.SettingsCategory
+import com.intellij.openapi.components.SimplePersistentStateComponent
+import com.intellij.openapi.components.State
+import com.intellij.openapi.components.Storage
+import com.intellij.util.xmlb.annotations.XMap
+
+@State(
+	name = LensApplicationConfigurable.ID,
+	storages = [ Storage("chylex.inspectionLens.xml") ],
+	category = SettingsCategory.UI
+)
+class LensSettingsState : SimplePersistentStateComponent<LensSettingsState.State>(State()) {
+	class State : BaseState() {
+		@get:XMap
+		val hiddenSeverities by map<String, StoredSeverity>()
+		
+		var showUnknownSeverities by property(true)
+		var useEditorFont by property(true)
+	}
+	
+	@get:Synchronized
+	@set:Synchronized
+	var severityFilter = createSeverityFilter()
+		private set
+	
+	val useEditorFont
+		get() = state.useEditorFont
+	
+	override fun loadState(state: State) {
+		super.loadState(state)
+		update()
+	}
+	
+	fun update() {
+		severityFilter = createSeverityFilter()
+		InspectionLens.scheduleRefresh()
+	}
+	
+	private fun createSeverityFilter(): LensSeverityFilter {
+		val state = state
+		return LensSeverityFilter(state.hiddenSeverities.keys, state.showUnknownSeverities)
+	}
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/settings/StoredSeverity.kt

@@ -0,0 +1,9 @@
+package com.chylex.intellij.inspectionlens.settings
+
+import com.intellij.lang.annotation.HighlightSeverity
+import com.intellij.util.xmlb.annotations.Tag
+
+@Tag("severity")
+data class StoredSeverity(var name: String = "", var priority: Int = 0) {
+	constructor(severity: HighlightSeverity) : this(severity.displayCapitalizedName, severity.myVal)
+}

src/main/kotlin/com/chylex/intellij/inspectionlens/util/MultiParentDisposable.kt

@@ -1,18 +0,0 @@
-package com.chylex.intellij.inspectionlens.util
-
-import com.intellij.openapi.Disposable
-import com.intellij.openapi.util.Disposer
-import java.lang.ref.WeakReference
-
-/**
- * A [Disposable] that can have multiple parents, and will be disposed when any parent is disposed.
- * A [WeakReference] and a lambda will remain in memory for every parent that is not disposed.
- */
-class MultiParentDisposable {
-	val self = Disposer.newDisposable()
-	
-	fun registerWithParent(parent: Disposable) {
-		val weakSelfReference = WeakReference(self)
-		Disposer.register(parent) { weakSelfReference.get()?.let(Disposer::dispose) }
-	}
-}

src/main/resources/META-INF/compatibility/InspectionLens-Grazie.xml

@@ -0,0 +1,5 @@
+<idea-plugin>
+  <extensions defaultExtensionNs="com.intellij">
+    <postStartupActivity implementation="com.chylex.intellij.inspectionlens.compatibility.GrazieSupport" />
+  </extensions>
+</idea-plugin>

src/main/resources/META-INF/plugin.xml

@@ -4,23 +4,69 @@
   <vendor url="https://chylex.com">chylex</vendor>
   
   <description><![CDATA[
-    Shows errors, warnings, and other inspection highlights inline.
+    Displays errors, warnings, and other inspections inline. Highlights the background of lines with inspections. Supports light and dark themes out of the box.
     <br><br>
-    Simply install the plugin and inspection descriptions will appear on the right side of the lines.
-    Shown inspection severities are <b>Errors</b>, <b>Warnings</b>, <b>Weak Warnings</b>, <b>Server Problems</b>, <b>Typos</b>, and other inspections from plugins or future IntelliJ versions that have a high enough severity level.
-    Each severity has a different color, with support for both light and dark themes.
+    By default, the plugin shows <b>Errors</b>, <b>Warnings</b>, <b>Weak Warnings</b>, <b>Server Problems</b>, <b>Grammar Errors</b>, <b>Typos</b>, and other inspections with a high enough severity level. Configure visible severities in <b>Settings | Tools | Inspection Lens</a>.
     <br><br>
-    The plugin is not customizable outside of the ability to disable/enable the plugin without restarting the IDE.
-    If the defaults don't work for you, I would recommend either trying the <a href="https://plugins.jetbrains.com/plugin/17302-inlineerror">Inline Error</a> plugin which can be customized, or proposing your change in the <a href="https://github.com/chylex/IntelliJ-Inspection-Lens/issues">issue tracker</a>.
+    Left-click an inspection to show quick fixes. Middle-click an inspection to navigate to the relevant code in the editor. 
     <br><br>
     Inspired by <a href="https://marketplace.visualstudio.com/items?itemName=usernamehw.errorlens">Error Lens</a> for VS Code, and <a href="https://plugins.jetbrains.com/plugin/17302-inlineerror">Inline Error</a> for IntelliJ Platform.
   ]]></description>
   
   <change-notes><![CDATA[
+    <b>Version 1.5</b>
+    <ul>
+      <li>Added possibility to left-click an inspection to show quick fixes.</li>
+      <li>Added possibility to middle-click an inspection to navigate to relevant code in the editor.</li>
+      <li>Added option to use UI font instead of editor font.</li>
+      <li>Long inspection descriptions are now truncated to 120 characters.</li>
+      <li>Improved descriptions of Kotlin compiler inspections.</li>
+      <li>Fixed visual artifacts in Rendered Doc comments.</li>
+    </ul>
+    <b>Version 1.4.1</b>
+    <ul>
+      <li>Fixed warnings in usage of IntelliJ SDK.</li>
+    </ul>
+    <b>Version 1.4</b>
+    <ul>
+      <li>Added configuration of visible severities to <b>Settings | Tools | Inspection Lens</b>.</li>
+    </ul>
+    <b>Version 1.3.3</b>
+    <ul>
+      <li>Partially reverted fix for inspections that include HTML in their description due to breaking inspections with angled brackets.</li>
+      <li>Fixed plugin not working when installed on JetBrains Gateway Client.</li>
+    </ul>
+    <b>Version 1.3.2</b>
+    <ul>
+      <li>Fixed inspections randomly not disappearing.</li>
+    </ul>
+    <b>Version 1.3.1</b>
+    <ul>
+      <li>Updated minimum version to IntelliJ 2023.3 due to breaking API changes.</li>
+    </ul>
+    <b>Version 1.3.0</b>
+    <ul>
+      <li>Added background colors to lines containing inspections. (<a href="https://github.com/chylex/IntelliJ-Inspection-Lens/pull/15">PR #15</a> by <a href="https://github.com/synopss">synopss</a>)</li>
+    </ul>
+    <b>Version 1.2.0</b>
+    <ul>
+      <li>Support for IntelliJ 2023.2 EAP.</li>
+      <li>Added distinct colors for typos and Grazie inspections.</li>
+    </ul>
+    <b>Version 1.1.2</b>
+    <ul>
+      <li>Added plugin icon.</li>
+      <li>Updated minimum version to IntelliJ 2023.1 due to deprecated APIs.</li>
+    </ul>
+    <b>Version 1.1.1</b>
+    <ul>
+      <li>Multiple inspections at the same place in the document are now ordered by severity.</li>
+      <li>Improved performance of processing inspections which do not contain HTML.</li>
+    </ul>
     <b>Version 1.1.0</b>
     <ul>
       <li>Fixed showing inspections that include HTML in their description. (<a href="https://github.com/chylex/IntelliJ-Inspection-Lens/pull/3">PR #3</a> by <a href="https://github.com/KostkaBrukowa">KostkaBrukowa</a>)</li>
-      <li>Fixed exception when asynchronous inspections run on a non-EDT thread.
+      <li>Fixed exception when asynchronous inspections run on a non-EDT thread.</li>
     </ul>
     <b>Version 1.0.0</b>
     <ul>
@@ -29,9 +75,14 @@
   ]]></change-notes>
   
   <depends>com.intellij.modules.platform</depends>
+  <depends optional="true" config-file="compatibility/InspectionLens-Grazie.xml">tanvd.grazi</depends>
   
   <extensions defaultExtensionNs="com.intellij">
-    <applicationService serviceImplementation="com.chylex.intellij.inspectionlens.InspectionLensPluginDisposableService" />
+    <applicationService serviceImplementation="com.chylex.intellij.inspectionlens.settings.LensSettingsState" />
+    <applicationConfigurable id="com.chylex.intellij.inspectionlens.settings.LensApplicationConfigurable"
+                             instance="com.chylex.intellij.inspectionlens.settings.LensApplicationConfigurable"
+                             displayName="Inspection Lens"
+                             parentId="tools" />
   </extensions>
   
   <applicationListeners>
@@ -39,6 +90,12 @@
   </applicationListeners>
   
   <projectListeners>
-    <listener class="com.chylex.intellij.inspectionlens.LensFileEditorListener" topic="com.intellij.openapi.fileEditor.FileEditorManagerListener" />
+    <listener class="com.chylex.intellij.inspectionlens.InspectionLensFileOpenedListener" topic="com.intellij.openapi.fileEditor.FileOpenedSyncListener" />
   </projectListeners>
+  
+  <actions>
+    <action id="com.chylex.intellij.inspectionlens.debug.ShowColorEditorAction" class="com.chylex.intellij.inspectionlens.debug.ShowColorEditorAction" text="Inspection Lens - Show Color Editor">
+      <add-to-group group-id="ToolsMenu" anchor="last" />
+    </action>
+  </actions>
 </idea-plugin>

src/main/resources/META-INF/pluginIcon.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="100%" height="100%" viewBox="0 0 40 40" version="1.1" xmlns="http://www.w3.org/2000/svg" xml:space="preserve" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linecap:square;stroke-miterlimit:1.5;">
+    <g>
+        <path d="M13.275,24.427c0.685,0.842 1.456,1.613 2.298,2.298l-11.01,11.01l-2.298,-2.298l11.01,-11.01Z" style="fill:#767676;"/>
+        <path d="M25.5,2c6.899,0 12.5,5.601 12.5,12.5c-0,6.899 -5.601,12.5 -12.5,12.5c-6.899,-0 -12.5,-5.601 -12.5,-12.5c-0,-6.899 5.601,-12.5 12.5,-12.5Zm-0,3c-5.243,0 -9.5,4.257 -9.5,9.5c-0,5.243 4.257,9.5 9.5,9.5c5.243,-0 9.5,-4.257 9.5,-9.5c-0,-5.243 -4.257,-9.5 -9.5,-9.5Z" style="fill:#8e8e8e;"/>
+    </g>
+    <g>
+        <path d="M19.5,18.5l2,-2l2,2l2,-2l2,2l2,-2l2,2" style="fill:none;stroke:#d2524f;stroke-width:1.15px;"/>
+        <path d="M19.5,12.5l2,-2l2,2l2,-2l2,2l2,-2l2,2" style="fill:none;stroke:#be9139;stroke-width:1.15px;"/>
+    </g>
+</svg>

src/test/kotlin/com/chylex/intellij/inspectionlens/editor/lens/EditorLensTest.kt

@@ -0,0 +1,65 @@
+package com.chylex.intellij.inspectionlens.editor.lens
+
+import com.intellij.lang.annotation.HighlightSeverity
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.ValueSource
+
+class EditorLensTest {
+	@Nested
+	inner class Priority {
+		@ParameterizedTest(name = "positionAndSeverity = {0}")
+		@ValueSource(ints = [0, -1, Int.MIN_VALUE])
+		fun minimumOffset(positionAndSeverity: Int) {
+			assertEquals(Int.MAX_VALUE, EditorLensInlay.getInlayHintPriority(positionAndSeverity, Int.MAX_VALUE))
+		}
+		
+		@ParameterizedTest(name = "position = {0}")
+		@ValueSource(ints = [8_589_933, Int.MAX_VALUE])
+		fun maximumOffset(position: Int) {
+			assertEquals(Int.MIN_VALUE + 295, EditorLensInlay.getInlayHintPriority(position, Int.MIN_VALUE))
+		}
+		
+		@ParameterizedTest(name = "severity = {0}")
+		@ValueSource(ints = [0, 1, 250, 499, 500])
+		fun firstPriorityBucket(severity: Int) {
+			assertEquals(Int.MAX_VALUE - 500 + severity, EditorLensInlay.getInlayHintPriority(0, severity))
+		}
+		
+		@ParameterizedTest(name = "severity = {0}")
+		@ValueSource(ints = [0, 1, 250, 499, 500])
+		fun secondPriorityBucket(severity: Int) {
+			assertEquals(Int.MAX_VALUE - 1000 + severity, EditorLensInlay.getInlayHintPriority(1, severity))
+		}
+		
+		@ParameterizedTest(name = "severity = {0}")
+		@ValueSource(ints = [0, 1, 250, 499, 500])
+		fun middlePriorityBucket(severity: Int) {
+			assertEquals(-353 + severity, EditorLensInlay.getInlayHintPriority(4294967, severity))
+		}
+		
+		@ParameterizedTest(name = "severity = {0}")
+		@ValueSource(ints = [0, 1, 250, 499, 500])
+		fun penultimatePriorityBucket(severity: Int) {
+			assertEquals(Int.MIN_VALUE + 295 + 500 + severity, EditorLensInlay.getInlayHintPriority(8_589_932, severity))
+		}
+		
+		/**
+		 * If any of these changes, re-evaluate [EditorLensInlay.MAXIMUM_SEVERITY] and the priority calculations.
+		 */
+		@Nested
+		inner class IdeaHighlightSeverityAssumptions {
+			@Test
+			fun smallestSeverityHasNotChanged() {
+				assertEquals(10, HighlightSeverity.DEFAULT_SEVERITIES.minOf(HighlightSeverity::myVal))
+			}
+			
+			@Test
+			fun highestSeverityHasNotChanged() {
+				assertEquals(400, HighlightSeverity.DEFAULT_SEVERITIES.maxOf(HighlightSeverity::myVal))
+			}
+		}
+	}
+}