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1 // Copyright 2014 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 "athena/extensions/athena_constrained_window_views_client.h" | |
6 | |
7 #include "athena/activity/public/activity.h" | |
8 #include "athena/activity/public/activity_manager.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/observer_list.h" | |
11 #include "components/constrained_window/constrained_window_views.h" | |
12 #include "components/constrained_window/constrained_window_views_client.h" | |
13 #include "components/web_modal/web_contents_modal_dialog_host.h" | |
14 #include "extensions/browser/guest_view/guest_view_base.h" | |
15 #include "ui/aura/window.h" | |
16 #include "ui/aura/window_observer.h" | |
17 #include "ui/aura/window_property.h" | |
18 | |
19 DECLARE_WINDOW_PROPERTY_TYPE(web_modal::ModalDialogHost*); | |
20 | |
21 namespace athena { | |
22 namespace { | |
23 | |
24 // Provides the host environment for web modal dialogs. See | |
25 // web_modal::WebContentsModalDialogHost, and ModalDialogHost for more | |
26 // details. | |
27 class ModalDialogHostImpl : public web_modal::WebContentsModalDialogHost, | |
28 public aura::WindowObserver { | |
29 public: | |
30 // Returns a modal dialog host for |window|. If it doesn't exist it creates | |
31 // one and stores it as owned property. | |
32 static ModalDialogHost* Get(aura::Window* window); | |
33 | |
34 private: | |
35 explicit ModalDialogHostImpl(aura::Window* host_window) | |
36 : host_window_(host_window) { | |
37 host_window_->AddObserver(this); | |
38 } | |
39 ~ModalDialogHostImpl() override {} | |
40 | |
41 // web_modal::ModalDialogHost: | |
42 gfx::NativeView GetHostView() const override { | |
43 return host_window_; | |
44 } | |
45 gfx::Point GetDialogPosition(const gfx::Size& size) override { | |
46 gfx::Rect host_bounds = host_window_->GetBoundsInScreen(); | |
47 host_bounds.ClampToCenteredSize(size); | |
48 return host_bounds.origin(); | |
49 } | |
50 void AddObserver(web_modal::ModalDialogHostObserver* observer) override { | |
51 observer_list_.AddObserver(observer); | |
52 } | |
53 void RemoveObserver(web_modal::ModalDialogHostObserver* observer) override { | |
54 observer_list_.RemoveObserver(observer); | |
55 } | |
56 | |
57 // web_modal::WebContensModalDialogHost: | |
58 gfx::Size GetMaximumDialogSize() override { | |
59 return host_window_->bounds().size(); | |
60 } | |
61 | |
62 // aura::WindowObserver: | |
63 void OnWindowDestroying(aura::Window* window) override { | |
64 if (window != host_window_) | |
65 return; | |
66 host_window_->RemoveObserver(this); | |
67 FOR_EACH_OBSERVER(web_modal::ModalDialogHostObserver, | |
68 observer_list_, | |
69 OnHostDestroying()); | |
70 } | |
71 void OnWindowBoundsChanged(aura::Window* window, | |
72 const gfx::Rect& old_bounds, | |
73 const gfx::Rect& new_bounds) override { | |
74 if (window != host_window_) | |
75 return; | |
76 FOR_EACH_OBSERVER(web_modal::ModalDialogHostObserver, | |
77 observer_list_, | |
78 OnPositionRequiresUpdate()); | |
79 } | |
80 | |
81 aura::Window* host_window_; | |
82 ObserverList<web_modal::ModalDialogHostObserver> observer_list_; | |
83 | |
84 DISALLOW_COPY_AND_ASSIGN(ModalDialogHostImpl); | |
85 }; | |
86 | |
87 // A window property key to store the modal dialog host for | |
88 // dialogs created with the window as its parent. | |
89 DEFINE_OWNED_WINDOW_PROPERTY_KEY(web_modal::ModalDialogHost, | |
90 kModalDialogHostKey, | |
91 nullptr); | |
92 | |
93 // static | |
94 web_modal::ModalDialogHost* ModalDialogHostImpl::Get( | |
95 aura::Window* window) { | |
96 web_modal::ModalDialogHost* host = window->GetProperty(kModalDialogHostKey); | |
97 if (!host) { | |
98 host = new ModalDialogHostImpl(window); | |
99 window->SetProperty(kModalDialogHostKey, host); | |
100 } | |
101 return host; | |
102 } | |
103 | |
104 class AthenaConstrainedWindowViewsClient | |
105 : public constrained_window::ConstrainedWindowViewsClient { | |
106 public: | |
107 AthenaConstrainedWindowViewsClient() {} | |
108 ~AthenaConstrainedWindowViewsClient() override {} | |
109 | |
110 private: | |
111 // ConstrainedWindowViewsClient: | |
112 content::WebContents* GetEmbedderWebContents( | |
113 content::WebContents* initiator_web_contents) override { | |
114 extensions::GuestViewBase* guest_view = | |
115 extensions::GuestViewBase::FromWebContents(initiator_web_contents); | |
116 return guest_view && guest_view->embedder_web_contents() ? | |
117 guest_view->embedder_web_contents() : initiator_web_contents; | |
118 } | |
119 web_modal::ModalDialogHost* GetModalDialogHost( | |
120 gfx::NativeWindow parent) override { | |
121 Activity* activity = ActivityManager::Get()->GetActivityForWindow(parent); | |
122 if (activity) | |
123 return ModalDialogHostImpl::Get(parent); | |
124 return nullptr; | |
125 } | |
126 gfx::NativeView GetDialogHostView(gfx::NativeWindow parent) override { | |
127 return parent; | |
128 } | |
129 | |
130 DISALLOW_COPY_AND_ASSIGN(AthenaConstrainedWindowViewsClient); | |
131 }; | |
132 | |
133 } // namespace | |
134 | |
135 void InstallConstrainedWindowViewsClient() { | |
136 constrained_window::SetConstrainedWindowViewsClient( | |
137 make_scoped_ptr(new AthenaConstrainedWindowViewsClient)); | |
138 } | |
139 | |
140 void UninstallConstrainedWindowViewsClient() { | |
141 constrained_window::SetConstrainedWindowViewsClient(nullptr); | |
142 } | |
143 | |
144 } // namespace athena | |
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