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1 // Copyright (c) 2011 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_AURA_SHELL_ACTIVATION_CONTROLLER_H_ | |
6 #define UI_AURA_SHELL_ACTIVATION_CONTROLLER_H_ | |
7 #pragma once | |
8 | |
9 #include "base/basictypes.h" | |
10 #include "base/compiler_specific.h" | |
11 #include "base/memory/scoped_ptr.h" | |
12 #include "ui/aura/client/activation_client.h" | |
13 #include "ui/aura/root_window_observer.h" | |
14 #include "ui/aura/window_observer.h" | |
15 | |
16 namespace aura_shell { | |
17 namespace internal { | |
18 | |
19 class ActivationController : public aura::ActivationClient, | |
20 public aura::WindowObserver, | |
21 public aura::RootWindowObserver { | |
22 public: | |
23 ActivationController(); | |
24 virtual ~ActivationController(); | |
25 | |
26 // Returns true if |window| exists within a container that supports | |
27 // activation. | |
28 static aura::Window* GetActivatableWindow(aura::Window* window); | |
29 | |
30 // Overridden from aura::ActivationClient: | |
31 virtual void ActivateWindow(aura::Window* window) OVERRIDE; | |
32 virtual void DeactivateWindow(aura::Window* window) OVERRIDE; | |
33 virtual aura::Window* GetActiveWindow() OVERRIDE; | |
34 virtual bool CanFocusWindow(aura::Window* window) const OVERRIDE; | |
35 | |
36 // Overridden from aura::WindowObserver: | |
37 virtual void OnWindowVisibilityChanged(aura::Window* window, | |
38 bool visible) OVERRIDE; | |
39 virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE; | |
40 | |
41 // Overridden from aura::RootWindowObserver: | |
42 virtual void OnWindowInitialized(aura::Window* window) OVERRIDE; | |
43 virtual void OnWindowFocused(aura::Window* window) OVERRIDE; | |
44 | |
45 #if defined(UNIT_TEST) | |
46 void set_default_container_for_test(aura::Window* window) { | |
47 default_container_for_test_ = window; | |
48 } | |
49 #endif | |
50 | |
51 private: | |
52 // Shifts activation to the next window, ignoring |window|. | |
53 void ActivateNextWindow(aura::Window* window); | |
54 | |
55 // Returns the next window that should be activated, ignoring |ignore|. | |
56 aura::Window* GetTopmostWindowToActivate(aura::Window* ignore) const; | |
57 | |
58 // True inside ActivateWindow(). Used to prevent recursion of focus | |
59 // change notifications causing activation. | |
60 bool updating_activation_; | |
61 | |
62 // For tests that are not running with a Shell instance, | |
63 // ActivationController's attempts to locate the next active window in | |
64 // GetTopmostWindowToActivate() will crash, so we provide this way for such | |
65 // tests to specify a default container. | |
66 aura::Window* default_container_for_test_; | |
67 | |
68 DISALLOW_COPY_AND_ASSIGN(ActivationController); | |
69 }; | |
70 | |
71 } // namespace internal | |
72 } // namespace aura_shell | |
73 | |
74 #endif // UI_AURA_SHELL_ACTIVATION_CONTROLLER_H_ | |
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