| // 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 CHROME_BROWSER_CHROMEOS_EVENTS_EVENT_REWRITER_CONTROLLER_H_ |
| #define CHROME_BROWSER_CHROMEOS_EVENTS_EVENT_REWRITER_CONTROLLER_H_ |
| |
| #include <list> |
| #include <vector> |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/scoped_vector.h" |
| #include "ui/aura/env_observer.h" |
| #include "ui/events/event_rewriter.h" |
| |
| namespace ui { |
| class EventSource; |
| } // namespace ui |
| |
| namespace chromeos { |
| |
| // Owns |ui::EventRewriter|s and ensures that they are added to all root |
| // windows |EventSource|s, current and future, in the order that they are |
| // added to this. |
| class EventRewriterController : public aura::EnvObserver { |
| public: |
| EventRewriterController(); |
| virtual ~EventRewriterController(); |
| |
| // Takes ownership of an EventRewriter; can only be called before Init(). |
| void AddEventRewriter(scoped_ptr<ui::EventRewriter> rewriter); |
| |
| // Add rewriters to any existing root windows; must be called once only |
| // after ash::Shell has been initialized. |
| void Init(); |
| |
| // aura::EnvObserver overrides: |
| virtual void OnWindowInitialized(aura::Window* window) override {} |
| virtual void OnHostInitialized(aura::WindowTreeHost* host) override; |
| |
| private: |
| typedef std::list<ui::EventSource*> EventSourceList; |
| typedef ScopedVector<ui::EventRewriter> EventRewriters; |
| |
| void AddToEventSource(ui::EventSource* source); |
| |
| // The |EventRewriter|s managed by this controller. |
| EventRewriters rewriters_; |
| |
| // Whether the owned event rewriters have been added to existing |
| // root windows; after this no more rewriters can be added. |
| bool initialized_; |
| |
| DISALLOW_COPY_AND_ASSIGN(EventRewriterController); |
| }; |
| |
| } // namespace chromeos |
| |
| #endif // CHROME_BROWSER_CHROMEOS_EVENTS_EVENT_REWRITER_CONTROLLER_H_ |