Drag and drop between app list and launcher - First patch

ash/wm/app_list_controller.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 ASH_WM_APP_LIST_CONTROLLER_H_
 #define ASH_WM_APP_LIST_CONTROLLER_H_
 
 #include "ash/launcher/launcher_icon_observer.h"
 #include "ash/shell_observer.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/observer_list.h"
 #include "base/timer.h"
 #include "ui/app_list/pagination_model_observer.h"
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/root_window_observer.h"
 #include "ui/base/events/event_handler.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/gfx/rect.h"
 #include "ui/views/widget/widget_observer.h"
 
 namespace app_list {
+class ApplicationDragAndDropHost;
 class AppListView;
 class PaginationModel;
 }
 
 namespace ui {
 class LocatedEvent;
 }
 
 namespace ash {
 
@@ skipping 34 matching lines @@
   // IsVisible().
   void Toggle(aura::Window* window);
 
   // Returns target visibility. This differs from IsVisible() if an animation
   // is ongoing.
   bool GetTargetVisibility() const { return is_visible_; }
 
   // Returns app list window or NULL if it is not visible.
   aura::Window* GetWindow();
 
+  // If |drag_and_drop_host| is not NULL it will be called upon drag and drop
+  // operations outside the application list.
+  void SetDragAndDropHostOfCurrentAppList(
+      app_list::ApplicationDragAndDropHost* drag_and_drop_host);
+
   void AddObserver(AppListControllerObserver* observer);
   void RemoveObserver(AppListControllerObserver* observer);
 
  private:
   // Sets the app list view and attempts to show it.
   void SetView(app_list::AppListView* view);
 
   // Forgets the view.
   void ResetView();
 
@@ skipping 52 matching lines @@
 
   ObserverList<AppListControllerObserver, true> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListController);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_APP_LIST_CONTROLLER_H_