Linux with OpenJDK Project Wakefield (e.g. JetBrains JBR 25) and VM option -Dawt.toolkit.name=WLToolkit (issue #1107):

- disabled FlatLaf window decorations because of bug https://youtrack.jetbrains.com/issue/JBR-10322
- disabled System File Chooser because application hangs after closing it

Author: DevCharly

CHANGELOG.md

@@ -16,6 +16,12 @@ FlatLaf Change Log
 - Linux with JetBrains Runtime: Fixed mouse "jumping" to other position when
   moving window on scaled secondary screen, if using FlatLaf window decorations.
   (issue #1103)
+- Linux with OpenJDK Project Wakefield (e.g. JetBrains JBR 25) and VM option
+  `-Dawt.toolkit.name=WLToolkit` (issue #1107):
+  - Disabled FlatLaf window decorations because of bug
+    [JBR-10322](https://youtrack.jetbrains.com/issue/JBR-10322).
+  - Disabled System File Chooser because application hangs after closing it.
+    Uses `JFileChooser` instead.
 - TableHeader: Fixed custom table header renderer background stops painting
   after hover interactions. (issue #1089)
 - TextComponents: Fixed preferred width when leading/trailing components or

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java

@@ -245,6 +245,14 @@ public boolean getSupportsWindowDecorations() {
 			FlatNativeWindowBorder.isSupported() )
 		  return false;
 
+		// Disable FlatLaf window decorations on Linux if using Wayland toolkit
+		// because moving window does not work because of bug:
+		//     https://youtrack.jetbrains.com/issue/JBR-10322
+		// Note: This affects only Java distributions that support Wayland toolkit
+		// (e.g. JetBrains JBR) and have enabled it with VM option: -Dawt.toolkit.name=WLToolkit
+		if( SystemInfo.isLinux && Toolkit.getDefaultToolkit().getClass().getName().endsWith( ".WLToolkit" ) )
+			return false;
+
 		return SystemInfo.isWindows_10_orLater || SystemInfo.isLinux;
 	}
 

flatlaf-core/src/main/java/com/formdev/flatlaf/util/SystemFileChooser.java

@@ -785,7 +785,9 @@ private FileChooserProvider getProvider() {
 			return new WindowsFileChooserProvider();
 		else if( SystemInfo.isMacOS && FlatNativeMacLibrary.isLoaded() )
 			return new MacFileChooserProvider();
-		else if( SystemInfo.isLinux && FlatNativeLinuxLibrary.isLoaded() && FlatNativeLinuxLibrary.isGtk3Available() )
+		else if( SystemInfo.isLinux && FlatNativeLinuxLibrary.isLoaded() &&
+				FlatNativeLinuxLibrary.isGtk3Available() &&
+				!Toolkit.getDefaultToolkit().getClass().getName().endsWith( ".WLToolkit" ) )
 			return new LinuxFileChooserProvider();
 		else // unknown platform or FlatLaf native library not loaded
 			return new SwingFileChooserProvider();

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoFrame.java

@@ -632,7 +632,8 @@ private void initFullWindowContent() {
 	}
 
 	private boolean supportsFlatLafWindowDecorations() {
-		return FlatLaf.supportsNativeWindowDecorations() || SystemInfo.isLinux;
+		return FlatLaf.supportsNativeWindowDecorations() ||
+			(SystemInfo.isLinux && new FlatLightLaf().getSupportsWindowDecorations());
 	}
 
 	private void initComponents() {