зеркало из https://github.com/mozilla/gecko-dev.git
72 строки
2.4 KiB
C++
72 строки
2.4 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_MutationEvent_h__
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#define mozilla_MutationEvent_h__
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#include "mozilla/BasicEvents.h"
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#include "nsCOMPtr.h"
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#include "nsIAtom.h"
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#include "nsIDOMNode.h"
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namespace mozilla {
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class InternalMutationEvent : public WidgetEvent
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{
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public:
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virtual InternalMutationEvent* AsMutationEvent() override { return this; }
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InternalMutationEvent(bool aIsTrusted, uint32_t aMessage)
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: WidgetEvent(aIsTrusted, aMessage, eMutationEventClass)
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, mAttrChange(0)
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{
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mFlags.mCancelable = false;
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}
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virtual WidgetEvent* Duplicate() const override
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{
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MOZ_ASSERT(mClass == eMutationEventClass,
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"Duplicate() must be overridden by sub class");
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InternalMutationEvent* result = new InternalMutationEvent(false, message);
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result->AssignMutationEventData(*this, true);
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result->mFlags = mFlags;
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return result;
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}
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nsCOMPtr<nsIDOMNode> mRelatedNode;
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nsCOMPtr<nsIAtom> mAttrName;
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nsCOMPtr<nsIAtom> mPrevAttrValue;
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nsCOMPtr<nsIAtom> mNewAttrValue;
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unsigned short mAttrChange;
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void AssignMutationEventData(const InternalMutationEvent& aEvent,
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bool aCopyTargets)
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{
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AssignEventData(aEvent, aCopyTargets);
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mRelatedNode = aEvent.mRelatedNode;
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mAttrName = aEvent.mAttrName;
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mPrevAttrValue = aEvent.mPrevAttrValue;
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mNewAttrValue = aEvent.mNewAttrValue;
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mAttrChange = aEvent.mAttrChange;
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}
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};
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// Bits are actually checked to optimize mutation event firing.
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// That's why I don't number from 0x00. The first event should
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// always be 0x01.
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#define NS_EVENT_BITS_MUTATION_SUBTREEMODIFIED 0x01
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#define NS_EVENT_BITS_MUTATION_NODEINSERTED 0x02
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#define NS_EVENT_BITS_MUTATION_NODEREMOVED 0x04
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#define NS_EVENT_BITS_MUTATION_NODEREMOVEDFROMDOCUMENT 0x08
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#define NS_EVENT_BITS_MUTATION_NODEINSERTEDINTODOCUMENT 0x10
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#define NS_EVENT_BITS_MUTATION_ATTRMODIFIED 0x20
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#define NS_EVENT_BITS_MUTATION_CHARACTERDATAMODIFIED 0x40
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} // namespace mozilla
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#endif // mozilla_MutationEvent_h__
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