Drag and drop between app list and launcher - First patch

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 "ui/app_list/app_list_export.h"
 #include "ui/app_list/signin_delegate_observer.h"
 #include "ui/views/bubble/bubble_delegate.h"
 
 namespace views {
 class Widget;
 }
 
 namespace app_list {
-
+class ApplicationDragAndDropHost;
 class AppListMainView;
 class AppListModel;
 class AppListViewDelegate;
 class PaginationModel;
 class SigninDelegate;
 class SigninView;
 
 // AppListView is the top-level view and controller of app list UI. It creates
 // and hosts a AppsGridView and passes AppListModel to it for display.
 class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
                                     public SigninDelegateObserver {
  public:
   // Takes ownership of |delegate|.
   explicit AppListView(AppListViewDelegate* delegate);
   virtual ~AppListView();
 
   // Initializes the widget.
   void InitAsBubble(gfx::NativeView parent,
                     PaginationModel* pagination_model,
                     views::View* anchor,
                     const gfx::Point& anchor_point,
                     views::BubbleBorder::Arrow arrow,
                     bool border_accepts_events);
 
   void SetBubbleArrow(views::BubbleBorder::Arrow arrow);
 
   void SetAnchorPoint(const gfx::Point& anchor_point);
 
+  // If |drag_and_drop_host| is not NULL it will be called upon drag and drop
+  // operations outside the application list. This has to be called after
+  // InitAsBubble was called since the app list object needs to exist so that
+  // it can set the host.
+  void SetDragAndDropHostOfCurrentAppList(
+      app_list::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();
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
@@ skipping 34 matching lines @@
 
   AppListMainView*  app_list_main_view_;
   SigninView* signin_view_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_