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500a400737
The AutoplayPermissionManager might be destroyed before the AutoplayPermissionRequest, so we can't get the response from request before AutoplayPermissionManager is destroyed. Therefore, we should manually reject the promise when the inner window is going to be destroyed. Differential Revision: https://phabricator.services.mozilla.com/D5906 --HG-- extra : moz-landing-system : lando
71 lines
2.9 KiB
C++
71 lines
2.9 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 __AutoplayPermissionRequestManager_h__
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#define __AutoplayPermissionRequestManager_h__
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#include "mozilla/MozPromise.h"
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#include "mozilla/WeakPtr.h"
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#include "nsIContentPermissionPrompt.h"
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#include "nsISupports.h"
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#include "nsIWeakReferenceUtils.h"
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#include "nsWeakReference.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 AutoplayPermissionManager is stored on the top level window,
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// and all documents in the tab use the top level window's
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// AutoplayPermissionManager. The AutoplayPermissionManager ensures that
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// multiple requests are merged into one, in order to avoid showing multiple
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// doorhangers on one tab at once.
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class AutoplayPermissionManager final
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: public SupportsWeakPtr<AutoplayPermissionManager>
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{
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public:
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MOZ_DECLARE_WEAKREFERENCE_TYPENAME(AutoplayPermissionManager)
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NS_INLINE_DECL_REFCOUNTING(AutoplayPermissionManager)
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// Creates a new AutoplayPermissionManager. Don't call this directly, use
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// AutoplayPolicy::RequestFor() to retrieve the appropriate
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// AutoplayPermissionManager to use for a document/window.
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explicit AutoplayPermissionManager(nsGlobalWindowInner* aWindow);
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// Requests permission to autoplay via a user prompt. The returned MozPromise
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// resolves/rejects when the user grants/denies permission to autoplay.
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// If the request doorhanger is dismissed, i.e. tab closed, ESC pressed,
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// etc, the MozPromise is rejected. If there is a stored permission for this
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// window's origin, the parent process will approve/deny the
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// autoplay request using the stored permission immediately (so the MozPromise
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// rejects in the content process after an IPC round trip).
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RefPtr<GenericPromise> RequestWithPrompt();
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// Called by AutoplayPermissionRequest to approve the play request,
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// and resolve the MozPromise returned by RequestWithPrompt().
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void ApprovePlayRequestIfExists();
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// Called by AutoplayPermissionRequest to deny the play request or the inner
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// window is going to be destroyed, this function would reject the MozPromise
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// returned by RequestWithPrompt().
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void DenyPlayRequestIfExists();
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private:
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~AutoplayPermissionManager();
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nsWeakPtr mWindow;
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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 // __AutoplayPermissionRequestManager_h__
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