зеркало из https://github.com/mozilla/gecko-dev.git
58 строки
2.2 KiB
C++
58 строки
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef AutoplayPermissionRequest_h_
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#define AutoplayPermissionRequest_h_
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#include "nsGlobalWindowInner.h"
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#include "nsISupportsImpl.h"
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#include "nsContentPermissionHelper.h"
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namespace mozilla {
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class AutoplayPermissionManager;
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// The AutoplayPermissionRequest is the object we pass off to the chrome JS
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// code to represent a request for permission to autoplay. Unfortunately the
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// front end code doesn't guarantee to give us an approve/cancel callback in
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// all cases. If chrome JS dismisses the permission request for whatever
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// reason (tab closed, user presses ESC, navigation, etc), the permission UI
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// code will drop its reference to the AutoplayPermissionRequest and it will
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// be destroyed. The AutoplayPermissionRequest keeps a weak reference to
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// the AutoplayPermissionManager. If the AutoplayPermissionManager is still
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// alive when the AutoplayPermissionRequest's destructor runs, the
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// AutoplayPermissionRequest's destructor calls the AutoplayPermissionManager
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// back with a cancel operation. Thus the AutoplayPermissionManager can
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// guarantee to always approve or cancel requests to play.
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class AutoplayPermissionRequest final : public nsIContentPermissionRequest
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSICONTENTPERMISSIONREQUEST
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static already_AddRefed<AutoplayPermissionRequest> Create(
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nsGlobalWindowInner* aWindow,
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AutoplayPermissionManager* aManager);
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private:
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AutoplayPermissionRequest(AutoplayPermissionManager* aManager,
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nsGlobalWindowInner* aWindow,
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nsIPrincipal* aNodePrincipal,
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nsIEventTarget* aMainThreadTarget);
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~AutoplayPermissionRequest();
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WeakPtr<AutoplayPermissionManager> mManager;
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nsWeakPtr mWindow;
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nsCOMPtr<nsIPrincipal> mNodePrincipal;
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nsCOMPtr<nsIEventTarget> mMainThreadTarget;
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nsCOMPtr<nsIContentPermissionRequester> mRequester;
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};
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} // namespace mozilla
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#endif // AutoplayPermissionRequest_h_
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