MacViews: Run native Cocoa context menus to support Services.

ui/views/controls/menu/menu_runner_impl.h

+// Copyright 2014 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_RUNNER_IMPL_H_
+#define UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_IMPL_H_
+
+#include "ui/views/controls/menu/menu_runner_impl_interface.h"
+
+#include <set>
+
+#include "base/memory/weak_ptr.h"
+#include "base/time/time.h"
+#include "ui/views/controls/menu/menu_controller_delegate.h"
+
+namespace views {
+
+class MenuController;
+class MenuDelegate;
+class MenuItemView;
+
+namespace internal {
+
+// A menu runner implementation that uses views::MenuItemView to show a menu.
+class MenuRunnerImpl : public MenuRunnerImplInterface,
+                       public MenuControllerDelegate {
+ public:
+  explicit MenuRunnerImpl(MenuItemView* menu);
+
+  virtual MenuItemView* GetMenu() const OVERRIDE;
+  virtual bool IsRunning() const OVERRIDE;
+  virtual void Release() OVERRIDE;
+  virtual MenuRunner::RunResult RunMenuAt(Widget* parent,
+                                          MenuButton* button,
+                                          const gfx::Rect& bounds,
+                                          MenuAnchorPosition anchor,
+                                          int32 run_types) OVERRIDE;
+  virtual void Cancel() OVERRIDE;
+  virtual base::TimeDelta GetClosingEventTime() const OVERRIDE;
+
+  // MenuControllerDelegate:
+  virtual void DropMenuClosed(NotifyType type, MenuItemView* menu) OVERRIDE;
+  virtual void SiblingMenuCreated(MenuItemView* menu) OVERRIDE;
+
+ private:
+  virtual ~MenuRunnerImpl();
+
+  // Cleans up after the menu is no longer showing. |result| is the menu that
+  // the user selected, or NULL if nothing was selected.
+  MenuRunner::RunResult MenuDone(MenuItemView* result, int mouse_event_flags);
+
+  // Returns true if mnemonics should be shown in the menu.
+  bool ShouldShowMnemonics(MenuButton* button);
+
+  // The menu. We own this. We don't use scoped_ptr as the destructor is
+  // protected and we're a friend.
+  MenuItemView* menu_;
+
+  // Any sibling menus. Does not include |menu_|. We own these too.
+  std::set<MenuItemView*> sibling_menus_;
+
+  // Created and set as the delegate of the MenuItemView if Release() is
+  // invoked.  This is done to make sure the delegate isn't notified after
+  // Release() is invoked. We do this as we assume the delegate is no longer
+  // valid if MenuRunner has been deleted.
+  scoped_ptr<MenuDelegate> empty_delegate_;
+
+  // Are we in run waiting for it to return?
+  bool running_;
+
+  // Set if |running_| and Release() has been invoked.
+  bool delete_after_run_;
+
+  // Are we running for a drop?
+  bool for_drop_;
+
+  // The controller.
+  MenuController* controller_;
+
+  // Do we own the controller?
+  bool owns_controller_;
+
+  // The timestamp of the event which closed the menu - or 0.
+  base::TimeDelta closing_event_time_;
+
+  // Used to detect deletion of |this| when notifying delegate of success.
+  base::WeakPtrFactory<MenuRunnerImpl> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(MenuRunnerImpl);
+};
+
+}  // namespace internal
+}  // namespace views
+
+#endif  // UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_IMPL_H_