initial

src/java.desktop/unix/classes/sun/awt/UNIXToolkit.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2004, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -33,6 +33,7 @@
 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VBGR;
 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VRGB;
 import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_ON;
+import static java.util.concurrent.TimeUnit.SECONDS;
 
 import java.awt.color.ColorSpace;
 
@@ -47,6 +48,9 @@
 import java.awt.image.DataBufferByte;
 import java.awt.image.Raster;
 import java.awt.image.WritableRaster;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 import java.util.Arrays;
@@ -240,6 +244,71 @@ protected Object lazilyLoadGTKIcon(String longname) {
         return img;
     }
 
+    private static volatile Boolean shouldDisableSystemTray = null;
+
+    /**
+     * There is an issue displaying the xembed icons in appIndicators
+     * area with certain Gnome Shell versions.
+     * To avoid any loss of quality of service, we are disabling
+     * SystemTray support in such cases.
+     *
+     * @return true if system tray should be disabled
+     */
+    public boolean shouldDisableSystemTray() {
+        Boolean result = shouldDisableSystemTray;
+        if (result == null) {
+            synchronized (GTK_LOCK) {
+                result = shouldDisableSystemTray;
+                if (result == null) {
+                    if ("gnome".equals(getDesktop())) {
+                        @SuppressWarnings("removal")
+                        Integer gnomeShellMajorVersion =
+                                AccessController
+                                        .doPrivileged((PrivilegedAction<Integer>)
+                                                this::getGnomeShellMajorVersion);
+
+                        if (gnomeShellMajorVersion == null
+                                || gnomeShellMajorVersion < 45) {
+
+                            return shouldDisableSystemTray = true;
+                        }
+                    }
+                    shouldDisableSystemTray = result = false;
+                }
+            }
+        }
+        return result;
+    }
+
+    private Integer getGnomeShellMajorVersion() {
+        try {
+            Process process =
+                new ProcessBuilder("/usr/bin/gnome-shell", "--version")
+                        .start();
+            try (InputStreamReader isr = new InputStreamReader(process.getInputStream());
+                 BufferedReader reader = new BufferedReader(isr)) {
+
+                if (process.waitFor(2, SECONDS) &&  process.exitValue() == 0) {
+                    String line = reader.readLine();
+                    if (line != null) {
+                        String[] versionComponents = line
+                                .replaceAll("[^\\d.]", "")
+                                .split("\\.");
+
+                        if (versionComponents.length >= 1) {
+                            return Integer.parseInt(versionComponents[0]);
+                        }
+                    }
+                }
+            }
+        } catch (IOException
+                 | InterruptedException
+                 | NumberFormatException ignored) {
+        }
+
+        return null;
+    }
+
     /**
      * Returns a BufferedImage which contains the Gtk icon requested.  If no
      * such icon exists or an error occurs loading the icon the result will

src/java.desktop/unix/classes/sun/awt/X11/XSystemTrayPeer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -30,6 +30,7 @@
 import sun.awt.SunToolkit;
 import sun.awt.AppContext;
 import sun.awt.AWTAccessor;
+import sun.awt.UNIXToolkit;
 import sun.util.logging.PlatformLogger;
 
 public class XSystemTrayPeer implements SystemTrayPeer, XMSelectionListener {
@@ -55,11 +56,14 @@ public class XSystemTrayPeer implements SystemTrayPeer, XMSelectionListener {
 
         selection.addSelectionListener(this);
 
-        long selection_owner = selection.getOwner(SCREEN);
-        available = (selection_owner != XConstants.None);
+        UNIXToolkit tk = (UNIXToolkit)Toolkit.getDefaultToolkit();
+        if (!tk.shouldDisableSystemTray()) {
+            long selection_owner = selection.getOwner(SCREEN);
+            available = (selection_owner != XConstants.None);
 
-        if (log.isLoggable(PlatformLogger.Level.FINE)) {
-            log.fine(" check if system tray is available. selection owner: " + selection_owner);
+            if (log.isLoggable(PlatformLogger.Level.FINE)) {
+                log.fine(" check if system tray is available. selection owner: " + selection_owner);
+            }
         }
     }