6d0c39faee
Add an implementation of nsIContentPermissionRequest to encapsulate requesting permission from the user to autoplay audible media. All documents in the tab request permission using the top level document's origin, so the AutoplayRequest instance for a tab is stored on the top level content window of the tab. AutoplayRequest ensures that there's only a single prompt shown at once. MozReview-Commit-ID: 2u3aLnEa21z
63 lines
2.4 KiB
C++
63 lines
2.4 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 __AutoplayRequest_h__
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#define __AutoplayRequest_h__
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#include "mozilla/MozPromise.h"
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#include "nsIContentPermissionPrompt.h"
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#include "nsIWeakReferenceUtils.h"
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class nsGlobalWindowInner;
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class nsIEventTarget;
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namespace mozilla {
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// Encapsulates requesting permission from the user to autoplay with a
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// doorhanger. The AutoplayRequest is stored on the top level window,
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// and all documents in the tab use the top level window's AutoplayRequest.
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// The AutoplayRequest ensures that multiple requests are merged into one,
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// in order to avoid showing multiple doorhangers on one tab at once.
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class AutoplayRequest 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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// Creates a new AutoplayRequest. Don't call this directly, use
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// AutoplayPolicy::RequestFor() to retrieve the appropriate AutoplayRequest
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// to use for a document/window.
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static already_AddRefed<AutoplayRequest> Create(nsGlobalWindowInner* aWindow);
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// Requests permission to autoplay via a user prompt. Promise
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// resolves/rejects when the user grants/denies permission to autoplay.
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// If there is a stored permission for this window's origin, the stored
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// the parent process will resolve/reject the autoplay request using the
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// stored permission immediately (so the promise rejects in the content
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// process after an IPC round trip).
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RefPtr<GenericPromise> RequestWithPrompt();
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private:
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AutoplayRequest(nsGlobalWindowInner* aWindow,
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nsIPrincipal* aNodePrincipal,
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nsIEventTarget* aMainThreadTarget);
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~AutoplayRequest();
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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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MozPromiseHolder<GenericPromise> mPromiseHolder;
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// Tracks whether we've dispatched a request to chrome in the parent process
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// to prompt for user permission to autoplay. This flag ensures we don't
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// request multiple times concurrently.
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bool mRequestDispatched = false;
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};
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} // namespace mozilla
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#endif // __AutoplayRequest_h__
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