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1 // Copyright (c) 2012 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_COREWM_WINDOW_MODALITY_CONTROLLER_H_ | |
6 #define UI_VIEWS_COREWM_WINDOW_MODALITY_CONTROLLER_H_ | |
7 | |
8 #include <vector> | |
9 | |
10 #include "base/compiler_specific.h" | |
11 #include "ui/aura/env_observer.h" | |
12 #include "ui/aura/window_observer.h" | |
13 #include "ui/events/event_handler.h" | |
14 #include "ui/views/views_export.h" | |
15 | |
16 namespace ui { | |
17 class EventTarget; | |
18 class LocatedEvent; | |
19 } | |
20 | |
21 namespace views { | |
22 namespace corewm { | |
23 | |
24 // Sets the modal parent for the child. | |
25 VIEWS_EXPORT void SetModalParent(aura::Window* child, aura::Window* parent); | |
26 | |
27 // Returns the modal transient child of |window|, or NULL if |window| does not | |
28 // have any modal transient children. | |
29 VIEWS_EXPORT aura::Window* GetModalTransient(aura::Window* window); | |
30 | |
31 // WindowModalityController is an event filter that consumes events sent to | |
32 // windows that are the transient parents of window-modal windows. This filter | |
33 // must be added to the CompoundEventFilter so that activation works properly. | |
34 class VIEWS_EXPORT WindowModalityController : public ui::EventHandler, | |
35 public aura::EnvObserver, | |
36 public aura::WindowObserver { | |
37 public: | |
38 explicit WindowModalityController(ui::EventTarget* event_target); | |
39 virtual ~WindowModalityController(); | |
40 | |
41 // Overridden from ui::EventHandler: | |
42 virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE; | |
43 virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE; | |
44 virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE; | |
45 | |
46 // Overridden from aura::EnvObserver: | |
47 virtual void OnWindowInitialized(aura::Window* window) OVERRIDE; | |
48 | |
49 // Overridden from aura::WindowObserver: | |
50 virtual void OnWindowPropertyChanged(aura::Window* window, | |
51 const void* key, | |
52 intptr_t old) OVERRIDE; | |
53 virtual void OnWindowVisibilityChanged(aura::Window* window, | |
54 bool visible) OVERRIDE; | |
55 virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE; | |
56 | |
57 private: | |
58 // Processes a mouse/touch event, and returns true if the event should be | |
59 // consumed. | |
60 bool ProcessLocatedEvent(aura::Window* target, | |
61 ui::LocatedEvent* event); | |
62 | |
63 std::vector<aura::Window*> windows_; | |
64 | |
65 ui::EventTarget* event_target_; | |
66 | |
67 DISALLOW_COPY_AND_ASSIGN(WindowModalityController); | |
68 }; | |
69 | |
70 } // namespace corewm | |
71 } // namespace views | |
72 | |
73 #endif // UI_VIEWS_COREWM_WINDOW_MODALITY_CONTROLLER_H_ | |
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