Make the App Info Dialog appear modal

ui/app_list/views/app_list_view.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_
 #define UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "ui/app_list/app_list_export.h"
@@ skipping 57 matching lines @@
       ApplicationDragAndDropHost* drag_and_drop_host);
 
   // Shows the UI when there are no pending icon loads. Otherwise, starts a
   // timer to show the UI when a maximum allowed wait time has expired.
   void ShowWhenReady();
 
   void Close();
 
   void UpdateBounds();
 
+  // When called with |visible| = true, displays a semi-transparent overlay over
+  // the app list (good for hiding the app list when a modal dialog is being
+  // shown). Call again with |visible| = false to hide.
+  void ShowAppListOverlay(bool visible);
+
   // Returns true if the app list should be centered and in landscape mode.
   bool ShouldCenterWindow() const;
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Paint(gfx::Canvas* canvas) OVERRIDE;
   virtual void OnThemeChanged() OVERRIDE;
 
   // WidgetDelegate overrides:
   virtual bool ShouldHandleSystemCommands() const OVERRIDE;
@@ skipping 52 matching lines @@
       SpeechRecognitionState new_state) OVERRIDE;
 
   SigninDelegate* GetSigninDelegate();
 
   scoped_ptr<AppListViewDelegate> delegate_;
 
   AppListMainView* app_list_main_view_;
   SigninView* signin_view_;
   SpeechView* speech_view_;
 
+  // A semi-transparent white overlay that covers the app list while dialogs are
+  // open. NULL if it hasn't been created yet.
+  views::View* overlay_view_;
+
   ObserverList<AppListViewObserver> observers_;
   scoped_ptr<HideViewAnimationObserver> animation_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_