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Side by Side Diff: ui/wm/core/window_util.h

Issue 2254733003: Add ui::LayerObserver and use it to update Alt+Tab previews as needed. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix for other test Created 4 years, 3 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef UI_WM_CORE_WINDOW_UTIL_H_ 5 #ifndef UI_WM_CORE_WINDOW_UTIL_H_
6 #define UI_WM_CORE_WINDOW_UTIL_H_ 6 #define UI_WM_CORE_WINDOW_UTIL_H_
7 7
8 #include <memory> 8 #include <memory>
9 #include <vector> 9 #include <vector>
10 10
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34 WM_EXPORT aura::Window* GetActivatableWindow(aura::Window* window); 34 WM_EXPORT aura::Window* GetActivatableWindow(aura::Window* window);
35 35
36 // Retrieves the toplevel window for |window|. The ActivationClient makes this 36 // Retrieves the toplevel window for |window|. The ActivationClient makes this
37 // determination. 37 // determination.
38 WM_EXPORT aura::Window* GetToplevelWindow(aura::Window* window); 38 WM_EXPORT aura::Window* GetToplevelWindow(aura::Window* window);
39 39
40 // A factory method to create a delegate for recreated layers. 40 // A factory method to create a delegate for recreated layers.
41 class WM_EXPORT LayerDelegateFactory { 41 class WM_EXPORT LayerDelegateFactory {
42 public: 42 public:
43 virtual ~LayerDelegateFactory() = default; 43 virtual ~LayerDelegateFactory() = default;
44 // |original_delegate| may already be deleted by the time the new 44 // |original_layer| may already be deleted by the time the new
45 // delegate is created, so if the new delegate has to access it 45 // delegate is created, so if the new delegate has to access it
46 // later, it is the new delegate's responsibility to make sure the 46 // later, it is the new delegate's responsibility to make sure the
47 // original delegate is alive. 47 // original layer/delegate is alive.
48 virtual ui::LayerDelegate* CreateDelegate( 48 virtual ui::LayerDelegate* CreateDelegate(ui::Layer* new_layer,
49 ui::LayerDelegate* original_delegate) = 0; 49 ui::Layer* original_layer) = 0;
50 }; 50 };
51 51
52 // Returns the existing Layer for |root| (and all its descendants) and creates 52 // Returns the existing Layer for |root| (and all its descendants) and creates
53 // a new layer for |root| and all its descendants. This is intended for 53 // a new layer for |root| and all its descendants. This is intended for
54 // animations that want to animate between the existing visuals and a new state. 54 // animations that want to animate between the existing visuals and a new state.
55 // 55 //
56 // As a result of this |root| has freshly created layers, meaning the layers 56 // As a result of this |root| has freshly created layers, meaning the layers
57 // have not yet been painted to. 57 // have not yet been painted to.
58 // 58 //
59 // When a non null |delegate_factory| is passed, it will be used to 59 // When a non null |delegate_factory| is passed, it will be used to
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74 WM_EXPORT void RemoveTransientChild(aura::Window* parent, aura::Window* child); 74 WM_EXPORT void RemoveTransientChild(aura::Window* parent, aura::Window* child);
75 75
76 // Returns true if |window| has |ancestor| as a transient ancestor. A transient 76 // Returns true if |window| has |ancestor| as a transient ancestor. A transient
77 // ancestor is found by following the transient parent chain of the window. 77 // ancestor is found by following the transient parent chain of the window.
78 WM_EXPORT bool HasTransientAncestor(const aura::Window* window, 78 WM_EXPORT bool HasTransientAncestor(const aura::Window* window,
79 const aura::Window* ancestor); 79 const aura::Window* ancestor);
80 80
81 } // namespace wm 81 } // namespace wm
82 82
83 #endif // UI_WM_CORE_WINDOW_UTIL_H_ 83 #endif // UI_WM_CORE_WINDOW_UTIL_H_
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