It is time.

ui/views/controls/menu/menu_model_adapter.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_VIEWS_CONTROLS_MENU_MENU_MODEL_ADAPTER_H_
-#define UI_VIEWS_CONTROLS_MENU_MENU_MODEL_ADAPTER_H_
-
-#include <map>
-
-#include "ui/views/controls/menu/menu_delegate.h"
-
-namespace ui {
-class MenuModel;
-}
-
-namespace views {
-class MenuItemView;
-
-// This class wraps an instance of ui::MenuModel with the
-// views::MenuDelegate interface required by views::MenuItemView.
-class VIEWS_EXPORT MenuModelAdapter : public MenuDelegate {
- public:
-  // The caller retains ownership of the ui::MenuModel instance and
-  // must ensure it exists for the lifetime of the adapter.
-  explicit MenuModelAdapter(ui::MenuModel* menu_model);
-  virtual ~MenuModelAdapter();
-
-  // Populate a MenuItemView menu with the ui::MenuModel items
-  // (including submenus).
-  virtual void BuildMenu(MenuItemView* menu);
-
-  // Convenience for creating and populating a menu. The caller owns the
-  // returned MenuItemView.
-  MenuItemView* CreateMenu();
-
-  void set_triggerable_event_flags(int triggerable_event_flags) {
-    triggerable_event_flags_ = triggerable_event_flags;
-  }
-  int triggerable_event_flags() const { return triggerable_event_flags_; }
-
-  // Creates a menu item for the specified entry in the model and adds it as
-  // a child to |menu| at the specified |menu_index|.
-  static MenuItemView* AddMenuItemFromModelAt(ui::MenuModel* model,
-                                              int model_index,
-                                              MenuItemView* menu,
-                                              int menu_index,
-                                              int item_id);
-
-  // Creates a menu item for the specified entry in the model and appends it as
-  // a child to |menu|.
-  static MenuItemView* AppendMenuItemFromModel(ui::MenuModel* model,
-                                               int model_index,
-                                               MenuItemView* menu,
-                                               int item_id);
-
- protected:
-  // Create and add a menu item to |menu| for the item at index |index| in
-  // |model|. Subclasses override this to allow custom items to be added to the
-  // menu.
-  virtual MenuItemView* AppendMenuItem(MenuItemView* menu,
-                                       ui::MenuModel* model,
-                                       int index);
-
-  // views::MenuDelegate implementation.
-  virtual void ExecuteCommand(int id) override;
-  virtual void ExecuteCommand(int id, int mouse_event_flags) override;
-  virtual bool IsTriggerableEvent(MenuItemView* source,
-                                  const ui::Event& e) override;
-  virtual bool GetAccelerator(int id,
-                              ui::Accelerator* accelerator) const override;
-  virtual base::string16 GetLabel(int id) const override;
-  virtual const gfx::FontList* GetLabelFontList(int id) const override;
-  virtual bool IsCommandEnabled(int id) const override;
-  virtual bool IsCommandVisible(int id) const override;
-  virtual bool IsItemChecked(int id) const override;
-  virtual void SelectionChanged(MenuItemView* menu) override;
-  virtual void WillShowMenu(MenuItemView* menu) override;
-  virtual void WillHideMenu(MenuItemView* menu) override;
-
- private:
-  // Implementation of BuildMenu().
-  void BuildMenuImpl(MenuItemView* menu, ui::MenuModel* model);
-
-  // Container of ui::MenuModel pointers as encountered by preorder
-  // traversal.  The first element is always the top-level model
-  // passed to the constructor.
-  ui::MenuModel* menu_model_;
-
-  // Mouse event flags which can trigger menu actions.
-  int triggerable_event_flags_;
-
-  // Map MenuItems to MenuModels.  Used to implement WillShowMenu().
-  std::map<MenuItemView*, ui::MenuModel*> menu_map_;
-
-  DISALLOW_COPY_AND_ASSIGN(MenuModelAdapter);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_CONTROLS_MENU_MENU_MODEL_ADAPTER_H_