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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_WIDGET_DESKTOP_AURA_DESTKOP_ACTIVATION_CLIENT_H_ | |
6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESTKOP_ACTIVATION_CLIENT_H_ | |
7 | |
8 #include "base/basictypes.h" | |
9 #include "base/observer_list.h" | |
10 #include "base/scoped_observer.h" | |
11 #include "ui/aura/client/activation_client.h" | |
12 #include "ui/aura/client/focus_change_observer.h" | |
13 #include "ui/aura/env_observer.h" | |
14 #include "ui/aura/root_window_observer.h" | |
15 #include "ui/aura/window_observer.h" | |
16 #include "ui/views/views_export.h" | |
17 | |
18 namespace aura { | |
19 class FocusManager; | |
20 class RootWindow; | |
21 | |
22 namespace client { | |
23 class ActivationChangeObserver; | |
24 } | |
25 } | |
26 | |
27 namespace views { | |
28 | |
29 // An activation client that handles activation events in a single | |
30 // RootWindow. Used only on the Desktop where there can be multiple RootWindow | |
31 // objects. | |
32 class VIEWS_EXPORT DesktopActivationClient | |
33 : public aura::client::ActivationClient, | |
34 public aura::WindowObserver, | |
35 public ui::EventHandler, | |
36 public aura::client::FocusChangeObserver { | |
37 public: | |
38 explicit DesktopActivationClient(aura::RootWindow* root_window); | |
39 virtual ~DesktopActivationClient(); | |
40 | |
41 // ActivationClient: | |
42 virtual void AddObserver( | |
43 aura::client::ActivationChangeObserver* observer) OVERRIDE; | |
44 virtual void RemoveObserver( | |
45 aura::client::ActivationChangeObserver* observer) OVERRIDE; | |
46 virtual void ActivateWindow(aura::Window* window) OVERRIDE; | |
47 virtual void DeactivateWindow(aura::Window* window) OVERRIDE; | |
48 virtual aura::Window* GetActiveWindow() OVERRIDE; | |
49 virtual aura::Window* GetActivatableWindow(aura::Window* window) OVERRIDE; | |
50 virtual aura::Window* GetToplevelWindow(aura::Window* window) OVERRIDE; | |
51 virtual bool OnWillFocusWindow(aura::Window* window, | |
52 const ui::Event* event) OVERRIDE; | |
53 virtual bool CanActivateWindow(aura::Window* window) const OVERRIDE; | |
54 | |
55 // Overridden from aura::WindowObserver: | |
56 virtual void OnWindowDestroying(aura::Window* window) OVERRIDE; | |
57 | |
58 // Overridden from aura::client::FocusChangeObserver: | |
59 virtual void OnWindowFocused(aura::Window* gained_focus, | |
60 aura::Window* lost_focus) OVERRIDE; | |
61 | |
62 // Overridden from ui::EventHandler: | |
63 virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE; | |
64 virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE; | |
65 virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE; | |
66 virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE; | |
67 virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE; | |
68 | |
69 private: | |
70 void FocusWindowWithEvent(const ui::Event* event); | |
71 | |
72 aura::RootWindow* root_window_; | |
73 | |
74 // The current active window. | |
75 aura::Window* current_active_; | |
76 | |
77 // True inside ActivateWindow(). Used to prevent recursion of focus | |
78 // change notifications causing activation. | |
79 bool updating_activation_; | |
80 | |
81 ObserverList<aura::client::ActivationChangeObserver> observers_; | |
82 | |
83 ScopedObserver<aura::Window, aura::WindowObserver> observer_manager_; | |
84 | |
85 DISALLOW_COPY_AND_ASSIGN(DesktopActivationClient); | |
86 }; | |
87 | |
88 } // namespace views | |
89 | |
90 #endif // UI_VIEWS_WIDGET_DESKTOP_AURA_DESTKOP_ACTIVATION_CLIENT_H_ | |
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