1 // Copyright 2014 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_CONTROLS_MENU_MENU_RUNNER_IMPL_H_ 6 #define UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_IMPL_H_ 7 8 #include "ui/views/controls/menu/menu_runner_impl_interface.h" 9 10 #include <set> 11 12 #include "base/memory/weak_ptr.h" 13 #include "base/time/time.h" 14 #include "ui/views/controls/menu/menu_controller_delegate.h" 15 16 namespace views { 17 18 class MenuController; 19 class MenuDelegate; 20 class MenuItemView; 21 22 namespace internal { 23 24 // A menu runner implementation that uses views::MenuItemView to show a menu. 25 class MenuRunnerImpl : public MenuRunnerImplInterface, 26 public MenuControllerDelegate { 27 public: 28 explicit MenuRunnerImpl(MenuItemView* menu); 29 30 virtual bool IsRunning() const OVERRIDE; 31 virtual void Release() OVERRIDE; 32 virtual MenuRunner::RunResult RunMenuAt(Widget* parent, 33 MenuButton* button, 34 const gfx::Rect& bounds, 35 MenuAnchorPosition anchor, 36 int32 run_types) OVERRIDE; 37 virtual void Cancel() OVERRIDE; 38 virtual base::TimeDelta GetClosingEventTime() const OVERRIDE; 39 40 // MenuControllerDelegate: 41 virtual void DropMenuClosed(NotifyType type, MenuItemView* menu) OVERRIDE; 42 virtual void SiblingMenuCreated(MenuItemView* menu) OVERRIDE; 43 44 private: 45 virtual ~MenuRunnerImpl(); 46 47 // Cleans up after the menu is no longer showing. |result| is the menu that 48 // the user selected, or NULL if nothing was selected. 49 MenuRunner::RunResult MenuDone(MenuItemView* result, int mouse_event_flags); 50 51 // Returns true if mnemonics should be shown in the menu. 52 bool ShouldShowMnemonics(MenuButton* button); 53 54 // The menu. We own this. We don't use scoped_ptr as the destructor is 55 // protected and we're a friend. 56 MenuItemView* menu_; 57 58 // Any sibling menus. Does not include |menu_|. We own these too. 59 std::set<MenuItemView*> sibling_menus_; 60 61 // Created and set as the delegate of the MenuItemView if Release() is 62 // invoked. This is done to make sure the delegate isn't notified after 63 // Release() is invoked. We do this as we assume the delegate is no longer 64 // valid if MenuRunner has been deleted. 65 scoped_ptr<MenuDelegate> empty_delegate_; 66 67 // Are we in run waiting for it to return? 68 bool running_; 69 70 // Set if |running_| and Release() has been invoked. 71 bool delete_after_run_; 72 73 // Are we running for a drop? 74 bool for_drop_; 75 76 // The controller. 77 MenuController* controller_; 78 79 // Do we own the controller? 80 bool owns_controller_; 81 82 // The timestamp of the event which closed the menu - or 0. 83 base::TimeDelta closing_event_time_; 84 85 // Used to detect deletion of |this| when notifying delegate of success. 86 base::WeakPtrFactory<MenuRunnerImpl> weak_factory_; 87 88 DISALLOW_COPY_AND_ASSIGN(MenuRunnerImpl); 89 }; 90 91 } // namespace internal 92 } // namespace views 93 94 #endif // UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_IMPL_H_ 95