зеркало из https://github.com/mozilla/gecko-dev.git
53 строки
1.7 KiB
C++
53 строки
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 mozilla_dom_MessageBroadcaster_h
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#define mozilla_dom_MessageBroadcaster_h
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#include "mozilla/dom/MessageListenerManager.h"
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#include "nsContentUtils.h"
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namespace mozilla {
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namespace dom {
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/**
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* Implementation for the WebIDL MessageBroadcaster interface. Base class for
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* window and process broadcaster message managers.
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*/
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class MessageBroadcaster : public MessageListenerManager {
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public:
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static MessageBroadcaster* From(MessageListenerManager* aManager) {
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if (aManager->IsBroadcaster()) {
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return static_cast<MessageBroadcaster*>(aManager);
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}
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return nullptr;
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}
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void BroadcastAsyncMessage(JSContext* aCx, const nsAString& aMessageName,
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JS::Handle<JS::Value> aObj,
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mozilla::ErrorResult& aError) {
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DispatchAsyncMessage(aCx, aMessageName, aObj, JS::UndefinedHandleValue,
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aError);
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}
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uint32_t ChildCount() { return mChildManagers.Length(); }
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MessageListenerManager* GetChildAt(uint32_t aIndex) {
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return mChildManagers.SafeElementAt(aIndex);
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}
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void ReleaseCachedProcesses();
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void AddChildManager(MessageListenerManager* aManager);
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void RemoveChildManager(MessageListenerManager* aManager);
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protected:
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MessageBroadcaster(MessageBroadcaster* aParentManager,
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MessageManagerFlags aFlags);
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_MessageBroadcaster_h
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