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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_VIEWS_CONTEXT_MENU_CONTROLLER_H_
      6 #define UI_VIEWS_CONTEXT_MENU_CONTROLLER_H_
      7 
      8 #include "ui/base/ui_base_types.h"
      9 #include "ui/views/views_export.h"
     10 
     11 namespace gfx {
     12 class Point;
     13 }
     14 
     15 namespace views {
     16 class View;
     17 
     18 // ContextMenuController is responsible for showing the context menu for a
     19 // View. To use a ContextMenuController invoke set_context_menu_controller on a
     20 // View. When the appropriate user gesture occurs ShowContextMenu is invoked
     21 // on the ContextMenuController.
     22 //
     23 // Setting a ContextMenuController on a view makes the view process mouse
     24 // events.
     25 //
     26 // It is up to subclasses that do their own mouse processing to invoke
     27 // the appropriate ContextMenuController method, typically by invoking super's
     28 // implementation for mouse processing.
     29 class VIEWS_EXPORT ContextMenuController {
     30  public:
     31   // Invoked to show the context menu for |source|.
     32   // |point| is in screen coordinates.
     33   virtual void ShowContextMenuForView(View* source,
     34                                       const gfx::Point& point,
     35                                       ui::MenuSourceType source_type) = 0;
     36 
     37  protected:
     38   virtual ~ContextMenuController() {}
     39 };
     40 
     41 }  // namespace views
     42 
     43 #endif  // UI_VIEWS_CONTEXT_MENU_CONTROLLER_H_
     44