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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 #include "ash/wm/common/always_on_top_controller.h" | |
6 | |
7 #include "ash/wm/common/wm_shell_window_ids.h" | |
8 #include "ash/wm/common/wm_window.h" | |
9 #include "ash/wm/common/wm_window_property.h" | |
10 #include "ash/wm/common/workspace/workspace_layout_manager.h" | |
11 #include "ash/wm/common/workspace/workspace_layout_manager_delegate.h" | |
12 #include "base/memory/ptr_util.h" | |
13 | |
14 namespace ash { | |
15 | |
16 AlwaysOnTopController::AlwaysOnTopController(wm::WmWindow* viewport) | |
17 : always_on_top_container_(viewport) { | |
18 always_on_top_container_->SetLayoutManager( | |
19 base::WrapUnique(new WorkspaceLayoutManager(viewport, nullptr))); | |
20 // Container should be empty. | |
21 DCHECK(always_on_top_container_->GetChildren().empty()); | |
22 always_on_top_container_->AddObserver(this); | |
23 } | |
24 | |
25 AlwaysOnTopController::~AlwaysOnTopController() { | |
26 if (always_on_top_container_) | |
27 always_on_top_container_->RemoveObserver(this); | |
28 } | |
29 | |
30 wm::WmWindow* AlwaysOnTopController::GetContainer(wm::WmWindow* window) const { | |
31 DCHECK(always_on_top_container_); | |
32 if (window->GetBoolProperty(wm::WmWindowProperty::ALWAYS_ON_TOP)) | |
33 return always_on_top_container_; | |
34 return always_on_top_container_->GetRootWindow()->GetChildByShellWindowId( | |
35 kShellWindowId_DefaultContainer); | |
36 } | |
37 | |
38 // TODO(rsadam@): Refactor so that this cast is unneeded. | |
39 WorkspaceLayoutManager* AlwaysOnTopController::GetLayoutManager() const { | |
40 return static_cast<WorkspaceLayoutManager*>( | |
41 always_on_top_container_->GetLayoutManager()); | |
42 } | |
43 | |
44 void AlwaysOnTopController::SetLayoutManagerForTest( | |
45 std::unique_ptr<WorkspaceLayoutManager> layout_manager) { | |
46 always_on_top_container_->SetLayoutManager(std::move(layout_manager)); | |
47 } | |
48 | |
49 void AlwaysOnTopController::OnWindowTreeChanged( | |
50 wm::WmWindow* window, | |
51 const TreeChangeParams& params) { | |
52 if (params.old_parent == always_on_top_container_) | |
53 params.target->RemoveObserver(this); | |
54 else if (params.new_parent == always_on_top_container_) | |
55 params.target->AddObserver(this); | |
56 } | |
57 | |
58 void AlwaysOnTopController::OnWindowPropertyChanged( | |
59 wm::WmWindow* window, | |
60 wm::WmWindowProperty property) { | |
61 if (window != always_on_top_container_ && | |
62 property == wm::WmWindowProperty::ALWAYS_ON_TOP) { | |
63 DCHECK(window->GetType() == ui::wm::WINDOW_TYPE_NORMAL || | |
64 window->GetType() == ui::wm::WINDOW_TYPE_POPUP); | |
65 wm::WmWindow* container = GetContainer(window); | |
66 if (window->GetParent() != container) | |
67 container->AddChild(window); | |
68 } | |
69 } | |
70 | |
71 void AlwaysOnTopController::OnWindowDestroying(wm::WmWindow* window) { | |
72 if (window == always_on_top_container_) { | |
73 always_on_top_container_->RemoveObserver(this); | |
74 always_on_top_container_ = nullptr; | |
75 } | |
76 } | |
77 | |
78 } // namespace ash | |
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