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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 SERVICES_WINDOW_MANAGER_VIEW_EVENT_DISPATCHER_H_ | |
6 #define SERVICES_WINDOW_MANAGER_VIEW_EVENT_DISPATCHER_H_ | |
7 | |
8 #include "base/memory/scoped_ptr.h" | |
9 #include "ui/events/event_processor.h" | |
10 #include "ui/events/event_target.h" | |
11 | |
12 namespace window_manager { | |
13 | |
14 class ViewTarget; | |
15 | |
16 class ViewEventDispatcher : public ui::EventProcessor { | |
17 public: | |
18 ViewEventDispatcher(); | |
19 ~ViewEventDispatcher() override; | |
20 | |
21 void SetRootViewTarget(ViewTarget* root_view_target); | |
22 | |
23 private: | |
24 // Overridden from ui::EventProcessor: | |
25 ui::EventTarget* GetRootTarget() override; | |
26 void OnEventProcessingStarted(ui::Event* event) override; | |
27 | |
28 // Overridden from ui::EventDispatcherDelegate. | |
29 bool CanDispatchToTarget(ui::EventTarget* target) override; | |
30 ui::EventDispatchDetails PreDispatchEvent(ui::EventTarget* target, | |
31 ui::Event* event) override; | |
32 ui::EventDispatchDetails PostDispatchEvent( | |
33 ui::EventTarget* target, const ui::Event& event) override; | |
34 | |
35 // We keep a weak reference to ViewTarget*, which corresponds to the root of | |
36 // the mojo::View tree. | |
37 ViewTarget* root_view_target_; | |
38 | |
39 ViewTarget* event_dispatch_target_; | |
40 ViewTarget* old_dispatch_target_; | |
41 | |
42 DISALLOW_COPY_AND_ASSIGN(ViewEventDispatcher); | |
43 }; | |
44 | |
45 } // namespace window_manager | |
46 | |
47 #endif // SERVICES_WINDOW_MANAGER_VIEW_EVENT_DISPATCHER_H_ | |
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