blob: 0f14c3d7d45d30b37d78415b7e3b6ffbdcda6b7a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_power_WakeLock_h
#define mozilla_dom_power_WakeLock_h
#include "nsCOMPtr.h"
#include "nsIDOMEventListener.h"
#include "nsIWakeLock.h"
#include "nsString.h"
#include "nsWeakReference.h"
#include "nsWrapperCache.h"
class nsPIDOMWindowInner;
namespace mozilla {
class ErrorResult;
namespace dom {
class Document;
class WakeLock final : public nsIDOMEventListener,
public nsSupportsWeakReference,
public nsIWakeLock {
public:
NS_DECL_NSIDOMEVENTLISTENER
NS_DECL_NSIWAKELOCK
NS_DECL_ISUPPORTS
// Note: WakeLock lives for the lifetime of the document in order to avoid
// exposing GC behavior to pages. This means that
// |var foo = navigator.requestWakeLock('cpu'); foo = null;|
// doesn't unlock the 'cpu' resource.
WakeLock() = default;
// Initialize this wake lock on behalf of the given window. Null windows are
// allowed; a lock without an associated window is always considered
// invisible.
nsresult Init(const nsAString& aTopic, nsPIDOMWindowInner* aWindow);
// WebIDL methods
nsPIDOMWindowInner* GetParentObject() const;
void GetTopic(nsAString& aTopic);
void Unlock(ErrorResult& aRv);
private:
virtual ~WakeLock();
void DoUnlock();
void DoLock();
void AttachEventListener();
void DetachEventListener();
bool mLocked = false;
bool mHidden = true;
nsString mTopic;
// window that this was created for. Weak reference.
nsWeakPtr mWindow;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_power_WakeLock_h
|
