Do not show tool windows widget if frame has not focus

platform/platform-impl/src/com/intellij/openapi/wm/impl/status/ToolWindowsWidget.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2014 JetBrains s.r.o.
+ * Copyright 2000-2016 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +21,7 @@ import com.intellij.ide.ui.UISettings;
 import com.intellij.ide.ui.UISettingsListener;
 import com.intellij.ide.util.PropertiesComponent;
 import com.intellij.openapi.Disposable;
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.ui.popup.Balloon;
 import com.intellij.openapi.ui.popup.JBPopup;
 import com.intellij.openapi.ui.popup.JBPopupFactory;
@@ -50,7 +51,6 @@ import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.Comparator;
 import java.util.List;
 
 /**
@@ -122,6 +122,10 @@ class ToolWindowsWidget extends JLabel implements CustomStatusBarWidget, StatusB
   }
 
   public void mouseEntered() {
+    final boolean active = ApplicationManager.getApplication().isActive();
+    if (!active) {
+      return;
+    }
     if (myAlarm.getActiveRequestCount() == 0) {
       myAlarm.addRequest(() -> {
         final IdeFrameImpl frame = UIUtil.getParentOfType(IdeFrameImpl.class, ToolWindowsWidget.this);