Revert "Added full KDE Plasma support, including listeners"

README.md

@@ -13,10 +13,7 @@ It can be useful for example if you want to synchronize your GUI App's look and
 > This library is inspired by the dark-theme detection in [Intellij Idea](https://github.com/JetBrains/intellij-community).
 
 # Compatibility
-It works on **Windows 10**, **MacOS Mojave** (or later) and even on **some Linux desktop environments**:
-
-- Gnome: Fully supported and tested on Ubuntu
-- KDE Plasma: Fully supported and tested on Ubuntu
+It works on **Windows 10**, **MacOS Mojave** (or later) and even on **some Linux distributions**.
 
 # Requirements
 **Java 11 or higher**

src/main/java/com/jthemedetecor/OsThemeDetector.java

@@ -62,9 +62,6 @@ private static OsThemeDetector createDetector() {
         } else if (OsInfo.isGnome()) {
             logDetection("Gnome", GnomeThemeDetector.class);
             return new GnomeThemeDetector();
-        } else if (OsInfo.isKde()) {
-            logDetection("KDE", KdeThemeDetector.class);
-            return new KdeThemeDetector();
         } else if (OsInfo.isMacOsMojaveOrLater()) {
             logDetection("MacOS", MacOSThemeDetector.class);
             return new MacOSThemeDetector();
@@ -105,7 +102,7 @@ private static void logDetection(String desktop, Class<? extends OsThemeDetector
 
     @ThreadSafe
     public static boolean isSupported() {
-        return OsInfo.isWindows10OrLater() || OsInfo.isMacOsMojaveOrLater() || OsInfo.isGnome() || OsInfo.isKde();
+        return OsInfo.isWindows10OrLater() || OsInfo.isMacOsMojaveOrLater() || OsInfo.isGnome();
     }
 
     private static final class EmptyDetector extends OsThemeDetector {

src/main/java/com/jthemedetecor/util/OsInfo.java

@@ -43,17 +43,12 @@ public static boolean isMacOsMojaveOrLater() {
         return hasTypeAndVersionOrHigher(PlatformEnum.MACOS, "10.14");
     }
 
-    @NotNull
-    public static String getCurrentLinuxDesktopEnvironmentName() {
-        return System.getenv("XDG_CURRENT_DESKTOP");
-    }
-
     public static boolean isGnome() {
-        return isLinux() && getCurrentLinuxDesktopEnvironmentName().toLowerCase().contains("gnome");
-    }
-
-    public static boolean isKde() {
-        return isLinux() && getCurrentLinuxDesktopEnvironmentName().toLowerCase().contains("KDE".toLowerCase());
+        return isLinux() && (
+                        queryResultContains("echo $XDG_CURRENT_DESKTOP", "gnome") ||
+                        queryResultContains("echo $XDG_DATA_DIRS | grep -Eo 'gnome'", "gnome") ||
+                        queryResultContains("ps -e | grep -E -i \"gnome\"", "gnome")
+        );
     }
 
     public static boolean hasType(PlatformEnum platformType) {