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33bb32f549
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-type f \
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-o -iname "*.h" \
-o -iname "*.c" \
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}
convert MOZ_OVERRIDE override
convert MOZ_FINAL final
90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_power_WakeLock_h
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#define mozilla_dom_power_WakeLock_h
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#include "nsCOMPtr.h"
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#include "nsIDOMEventListener.h"
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#include "nsIObserver.h"
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#include "nsString.h"
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#include "nsWeakReference.h"
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#include "nsWrapperCache.h"
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#include "mozilla/ErrorResult.h"
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class nsIDOMWindow;
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namespace mozilla {
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namespace dom {
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class ContentParent;
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class WakeLock final
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: public nsIDOMEventListener
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, public nsWrapperCache
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, public nsIObserver
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, public nsSupportsWeakReference
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{
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public:
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NS_DECL_NSIDOMEVENTLISTENER
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NS_DECL_NSIOBSERVER
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(WakeLock, nsIDOMEventListener)
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// Note: WakeLock lives for the lifetime of the document in order to avoid
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// exposing GC behavior to pages. This means that
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// |var foo = navigator.requestWakeLock('cpu'); foo = null;|
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// doesn't unlock the 'cpu' resource.
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WakeLock();
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// Initialize this wake lock on behalf of the given window. Null windows are
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// allowed; a lock without an associated window is always considered
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// invisible.
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nsresult Init(const nsAString &aTopic, nsIDOMWindow* aWindow);
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// Initialize this wake lock on behalf of the given process. If the process
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// dies, the lock is released. A wake lock initialized via this method is
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// always considered visible.
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nsresult Init(const nsAString &aTopic, ContentParent* aContentParent);
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// WebIDL methods
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nsISupports* GetParentObject() const;
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virtual JSObject*
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WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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void GetTopic(nsAString& aTopic);
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void Unlock(ErrorResult& aRv);
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private:
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virtual ~WakeLock();
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void DoUnlock();
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void DoLock();
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void AttachEventListener();
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void DetachEventListener();
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bool mLocked;
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bool mHidden;
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// The ID of the ContentParent on behalf of whom we acquired this lock, or
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// CONTENT_PROCESS_UNKNOWN_ID if this lock was acquired on behalf of the
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// current process.
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uint64_t mContentParentID;
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nsString mTopic;
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// window that this was created for. Weak reference.
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nsWeakPtr mWindow;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_power_WakeLock_h
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