зеркало из https://github.com/mozilla/gecko-dev.git
101 строка
2.7 KiB
C++
101 строка
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_AsyncEventDispatcher_h_
|
|
#define mozilla_AsyncEventDispatcher_h_
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIDOMEvent.h"
|
|
#include "nsString.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
class nsINode;
|
|
|
|
namespace mozilla {
|
|
|
|
/**
|
|
* Use nsAsyncDOMEvent to fire a DOM event that requires safe a stable DOM.
|
|
* For example, you may need to fire an event from within layout, but
|
|
* want to ensure that the event handler doesn't mutate the DOM at
|
|
* the wrong time, in order to avoid resulting instability.
|
|
*/
|
|
|
|
class AsyncEventDispatcher : public nsRunnable
|
|
{
|
|
public:
|
|
AsyncEventDispatcher(nsINode* aTarget, const nsAString& aEventType,
|
|
bool aBubbles, bool aDispatchChromeOnly)
|
|
: mTarget(aTarget)
|
|
, mEventType(aEventType)
|
|
, mBubbles(aBubbles)
|
|
, mDispatchChromeOnly(aDispatchChromeOnly)
|
|
{
|
|
}
|
|
|
|
AsyncEventDispatcher(dom::EventTarget* aTarget, const nsAString& aEventType,
|
|
bool aBubbles)
|
|
: mTarget(aTarget)
|
|
, mEventType(aEventType)
|
|
, mBubbles(aBubbles)
|
|
, mDispatchChromeOnly(false)
|
|
{
|
|
}
|
|
|
|
AsyncEventDispatcher(dom::EventTarget* aTarget, nsIDOMEvent* aEvent)
|
|
: mTarget(aTarget)
|
|
, mEvent(aEvent)
|
|
, mDispatchChromeOnly(false)
|
|
{
|
|
}
|
|
|
|
AsyncEventDispatcher(dom::EventTarget* aTarget, WidgetEvent& aEvent);
|
|
|
|
NS_IMETHOD Run() override;
|
|
nsresult PostDOMEvent();
|
|
void RunDOMEventWhenSafe();
|
|
|
|
nsCOMPtr<dom::EventTarget> mTarget;
|
|
nsCOMPtr<nsIDOMEvent> mEvent;
|
|
nsString mEventType;
|
|
bool mBubbles;
|
|
bool mDispatchChromeOnly;
|
|
};
|
|
|
|
class LoadBlockingAsyncEventDispatcher final : public AsyncEventDispatcher
|
|
{
|
|
public:
|
|
LoadBlockingAsyncEventDispatcher(nsINode* aEventNode,
|
|
const nsAString& aEventType,
|
|
bool aBubbles, bool aDispatchChromeOnly)
|
|
: AsyncEventDispatcher(aEventNode, aEventType,
|
|
aBubbles, aDispatchChromeOnly)
|
|
, mBlockedDoc(aEventNode->OwnerDoc())
|
|
{
|
|
if (mBlockedDoc) {
|
|
mBlockedDoc->BlockOnload();
|
|
}
|
|
}
|
|
|
|
LoadBlockingAsyncEventDispatcher(nsINode* aEventNode, nsIDOMEvent* aEvent)
|
|
: AsyncEventDispatcher(aEventNode, aEvent)
|
|
, mBlockedDoc(aEventNode->OwnerDoc())
|
|
{
|
|
if (mBlockedDoc) {
|
|
mBlockedDoc->BlockOnload();
|
|
}
|
|
}
|
|
|
|
~LoadBlockingAsyncEventDispatcher();
|
|
|
|
private:
|
|
nsCOMPtr<nsIDocument> mBlockedDoc;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_AsyncEventDispatcher_h_
|