taskbar badge on windows

gui/griffon-app/views/com/muwire/gui/MainFrameView.groovy

@@ -17,6 +17,8 @@ import javax.swing.event.ChangeEvent
 import javax.swing.event.ChangeListener
 import javax.swing.tree.DefaultMutableTreeNode
 import java.awt.GridBagConstraints
+import java.awt.Image
+import java.awt.Window
 import java.util.function.Predicate
 
 import static com.muwire.gui.Translator.trans
@@ -105,7 +107,7 @@ class MainFrameView {
     JPanel messageFolderContents
     
     void initUI() {
-        chatNotificator = new ChatNotificator(application.getMvcGroupManager())
+        
         settings = application.context.get("ui-settings")
         int rowHeight = application.context.get("row-height")
         
@@ -780,6 +782,10 @@ class MainFrameView {
 
             }
         }
+
+        chatNotificator = new ChatNotificator(application.getMvcGroupManager(),
+                (Window)application.getWindowManager().findWindow("main-frame"),
+                (Image) builder.imageIcon("/comment.png").image)
         
         collectionsTable = builder.getVariable("collections-table")
         collectionFilesTable = builder.getVariable("items-table")

gui/src/main/groovy/com/muwire/gui/ChatNotificator.groovy

@@ -1,5 +1,6 @@
 package com.muwire.gui
 
+import java.awt.Image
 import java.awt.Taskbar
 import java.awt.Taskbar.Feature
 
@@ -8,6 +9,8 @@ import javax.swing.JTabbedPane
 
 import griffon.core.mvc.MVCGroupManager
 
+import java.awt.Window
+
 class ChatNotificator {
     
     public static interface Listener {
@@ -15,6 +18,8 @@ class ChatNotificator {
     }
     
     private final MVCGroupManager groupManager
+    private final Window window
+    private final Image image
     
     private boolean chatInFocus
     private String currentServerTab
@@ -24,8 +29,10 @@ class ChatNotificator {
     
     private Listener listener
     
-    ChatNotificator(MVCGroupManager groupManager) {
+    ChatNotificator(MVCGroupManager groupManager, Window window, Image image) {
         this.groupManager = groupManager
+        this.window = window
+        this.image = image
     }
     
     void serverTabChanged(JTabbedPane source) {
@@ -92,17 +99,24 @@ class ChatNotificator {
         listener?.update()
         if (!Taskbar.isTaskbarSupported())
             return
+
+        int total = 0
+        roomsWithMessages.values().each {
+            total += it
+        }
+
         def taskBar = Taskbar.getTaskbar()
-        if (!taskBar.isSupported(Feature.ICON_BADGE_NUMBER))
-            return
-        if (roomsWithMessages.isEmpty())
-            taskBar.setIconBadge("")
-        else {
-            int total = 0
-            roomsWithMessages.values().each { 
-                total += it
+        if (taskBar.isSupported(Feature.ICON_BADGE_NUMBER)) {
+            if (total == 0)
+                taskBar.setIconBadge("")
+            else {
+                taskBar.setIconBadge(String.valueOf(total))
             }
-            taskBar.setIconBadge(String.valueOf(total))
+        } else if (taskBar.isSupported(Feature.ICON_BADGE_IMAGE_WINDOW)) {
+            if (total > 0)
+                taskBar.setWindowIconBadge(window, image)
+            else
+                taskBar.setWindowIconBadge(window, null)
         }
     }
 }