From c6180241d546d3bf13fa1005d319041be6857929 Mon Sep 17 00:00:00 2001
From: Alexander Lobas <Alexander.Lobas@jetbrains.com>
Date: Tue, 9 Oct 2012 13:25:03 +0400
Subject: [PATCH] EA-38832

---
 .../platform-impl/src/com/intellij/ui/AppIcon.java | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/platform/platform-impl/src/com/intellij/ui/AppIcon.java b/platform/platform-impl/src/com/intellij/ui/AppIcon.java
index 9cde623319e2..b37e212ba812 100644
--- a/platform/platform-impl/src/com/intellij/ui/AppIcon.java
+++ b/platform/platform-impl/src/com/intellij/ui/AppIcon.java
@@ -376,7 +376,7 @@ public abstract class AppIcon {
       }
 
       try {
-        if (frame != null) {
+        if (isValid(frame)) {
           Win7TaskBar.setProgress(frame, value, isOk);
         }
       }
@@ -396,7 +396,7 @@ public abstract class AppIcon {
       }
 
       try {
-        if (frame != null) {
+        if (isValid(frame)) {
           Win7TaskBar.hideProgress(frame);
         }
       }
@@ -413,7 +413,7 @@ public abstract class AppIcon {
 
     @Override
     public void _setTextBadge(IdeFrame frame, String text) {
-      if (frame == null) {
+      if (!isValid(frame)) {
         return;
       }
 
@@ -458,7 +458,7 @@ public abstract class AppIcon {
 
     @Override
     public void _setOkBadge(IdeFrame frame, boolean visible) {
-      if (frame == null) {
+      if (!isValid(frame)) {
         return;
       }
 
@@ -494,7 +494,7 @@ public abstract class AppIcon {
     @Override
     public void _requestAttention(IdeFrame frame, boolean critical) {
       try {
-        if (frame != null) {
+        if (isValid(frame)) {
           Win7TaskBar.attention(frame, critical);
         }
       }
@@ -511,6 +511,10 @@ public abstract class AppIcon {
     @Override
     public void requestFocus(IdeFrame frame) {
     }
+
+    private static boolean isValid(IdeFrame frame) {
+      return frame != null && ((Component)frame).isDisplayable();
+    }
   }
 
   private static class EmptyIcon extends AppIcon {