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https://gitlab.winehq.org/wine/wine-gecko.git
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91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
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/* -*- Mode: C++; tab-width: 2; 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_AsyncEventDispatcher_h_
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#define mozilla_AsyncEventDispatcher_h_
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#include "mozilla/Attributes.h"
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#include "nsCOMPtr.h"
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#include "nsIDocument.h"
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#include "nsIDOMEvent.h"
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#include "nsINode.h"
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#include "nsString.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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/**
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* Use nsAsyncDOMEvent to fire a DOM event that requires safe a stable DOM.
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* For example, you may need to fire an event from within layout, but
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* want to ensure that the event handler doesn't mutate the DOM at
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* the wrong time, in order to avoid resulting instability.
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*/
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class AsyncEventDispatcher : public nsRunnable
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{
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public:
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AsyncEventDispatcher(nsINode* aEventNode, const nsAString& aEventType,
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bool aBubbles, bool aDispatchChromeOnly)
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: mEventNode(aEventNode)
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, mEventType(aEventType)
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, mBubbles(aBubbles)
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, mDispatchChromeOnly(aDispatchChromeOnly)
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{
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}
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AsyncEventDispatcher(nsINode* aEventNode, nsIDOMEvent* aEvent)
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: mEventNode(aEventNode)
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, mEvent(aEvent)
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, mDispatchChromeOnly(false)
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{
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}
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AsyncEventDispatcher(nsINode* aEventNode, WidgetEvent& aEvent);
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NS_IMETHOD Run() MOZ_OVERRIDE;
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nsresult PostDOMEvent();
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void RunDOMEventWhenSafe();
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nsCOMPtr<nsINode> mEventNode;
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nsCOMPtr<nsIDOMEvent> mEvent;
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nsString mEventType;
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bool mBubbles;
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bool mDispatchChromeOnly;
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};
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class LoadBlockingAsyncEventDispatcher MOZ_FINAL : public AsyncEventDispatcher
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{
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public:
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LoadBlockingAsyncEventDispatcher(nsINode* aEventNode,
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const nsAString& aEventType,
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bool aBubbles, bool aDispatchChromeOnly)
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: AsyncEventDispatcher(aEventNode, aEventType,
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aBubbles, aDispatchChromeOnly)
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, mBlockedDoc(aEventNode->OwnerDoc())
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{
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if (mBlockedDoc) {
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mBlockedDoc->BlockOnload();
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}
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}
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LoadBlockingAsyncEventDispatcher(nsINode* aEventNode, nsIDOMEvent* aEvent)
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: AsyncEventDispatcher(aEventNode, aEvent)
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, mBlockedDoc(aEventNode->OwnerDoc())
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{
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if (mBlockedDoc) {
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mBlockedDoc->BlockOnload();
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}
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}
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~LoadBlockingAsyncEventDispatcher();
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private:
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nsCOMPtr<nsIDocument> mBlockedDoc;
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};
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} // namespace mozilla
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#endif // mozilla_AsyncEventDispatcher_h_
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