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1 // Copyright 2015 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 "config.h" | |
6 #include "core/dom/WakeLock.h" | |
7 | |
8 #include "core/dom/Document.h" | |
9 | |
10 namespace blink { | |
11 | |
12 class WakeLock::WakeLockDocumentVisibilityObserver final | |
13 : public NoBaseWillBeGarbageCollectedFinalized<WakeLockDocumentVisibilityObs erver> | |
14 , public DocumentVisibilityObserver { | |
15 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(WakeLockDocumentVisibilityObserver); | |
16 public: | |
17 WakeLockDocumentVisibilityObserver(Document&, WakeLock*); | |
18 | |
19 // DocumentVisibilityObserver implementation | |
20 virtual void didChangeVisibilityState(PageVisibilityState) override; | |
21 | |
22 DECLARE_VIRTUAL_TRACE(); | |
23 | |
24 private: | |
25 RawPtrWillBeMember<WakeLock> m_wakeLock; | |
26 }; | |
27 | |
28 WakeLock::WakeLockDocumentVisibilityObserver::WakeLockDocumentVisibilityObserver (Document& document, WakeLock* wakeLock) | |
29 : DocumentVisibilityObserver(document) | |
30 , m_wakeLock(wakeLock) | |
31 { | |
32 } | |
33 | |
34 void WakeLock::WakeLockDocumentVisibilityObserver::didChangeVisibilityState(Page VisibilityState state) | |
35 { | |
36 if (m_wakeLock) { | |
37 m_wakeLock->didChangeVisibilityState(state); | |
38 } | |
39 } | |
40 | |
41 DEFINE_TRACE(WakeLock::WakeLockDocumentVisibilityObserver) | |
42 { | |
43 DocumentVisibilityObserver::trace(visitor); | |
44 visitor->trace(m_wakeLock); | |
45 } | |
46 | |
47 WakeLock::WakeLock(Document& document) | |
48 : DocumentLifecycleObserver(&document) | |
49 , m_controller(nullptr) | |
50 , m_pageVisibilityState(document.pageVisibilityState()) | |
51 , m_keepScreenAwake(false) | |
52 { | |
53 if (LocalFrame* frame = document.frame()) { | |
mlamouri (slow - plz ping)
2015/04/28 08:00:25
if (!document.frame())
return;
[...]
| |
54 m_controller = WakeLockController::from(frame); | |
55 m_observer = adoptPtrWillBeNoop(new WakeLockDocumentVisibilityObserver(d ocument, this)); | |
56 } | |
57 } | |
58 | |
59 // static | |
60 const char* WakeLock::supplementName() | |
61 { | |
62 return "WakeLock"; | |
63 } | |
64 | |
65 // static | |
66 WakeLock& WakeLock::from(Document& document) | |
67 { | |
68 WakeLock* wakeLock = static_cast<WakeLock*>(DocumentSupplement::from(documen t, supplementName())); | |
69 | |
70 if (!wakeLock) { | |
71 wakeLock = new WakeLock(document); | |
72 DocumentSupplement::provideTo(document, supplementName(), adoptPtrWillBe Noop(wakeLock)); | |
73 } | |
74 | |
75 return *wakeLock; | |
76 } | |
77 | |
78 // static | |
79 bool WakeLock::keepScreenAwake(Document& document) | |
80 { | |
81 return WakeLock::from(document).m_keepScreenAwake; | |
82 } | |
83 | |
84 // static | |
85 void WakeLock::setKeepScreenAwake(Document& document, bool keepScreenAwake) | |
86 { | |
87 WakeLock::from(document).setKeepScreenAwake(keepScreenAwake); | |
88 } | |
89 | |
90 void WakeLock::didChangeVisibilityState(PageVisibilityState pageVisibilityState) | |
91 { | |
92 m_pageVisibilityState = pageVisibilityState; | |
93 notifyController(); | |
94 } | |
95 | |
96 void WakeLock::documentWasDetached() | |
97 { | |
98 m_observer.clear(); | |
99 setKeepScreenAwake(false); | |
100 } | |
101 | |
102 void WakeLock::setKeepScreenAwake(bool keepScreenAwake) | |
103 { | |
104 m_keepScreenAwake = keepScreenAwake; | |
105 notifyController(); | |
106 } | |
107 | |
108 void WakeLock::notifyController() const | |
109 { | |
110 if (m_controller) { | |
111 m_controller->requestKeepScreenAwake(m_keepScreenAwake | |
112 && m_pageVisibilityState == PageVisibilityStateVisible); | |
113 } | |
114 } | |
115 | |
116 DEFINE_TRACE(WakeLock) | |
117 { | |
118 DocumentSupplement::trace(visitor); | |
119 DocumentLifecycleObserver::trace(visitor); | |
120 visitor->trace(m_controller); | |
121 visitor->trace(m_observer); | |
122 } | |
123 | |
124 } | |
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