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/* -*- Mode: C++; tab-width: 8; 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_MutationEvent_h__
#define mozilla_MutationEvent_h__
#include "mozilla/BasicEvents.h"
#include "nsCOMPtr.h"
#include "nsIAtom.h"
#include "nsIDOMNode.h"
namespace mozilla {
class InternalMutationEvent : public WidgetEvent
{
public:
virtual InternalMutationEvent* AsMutationEvent() override { return this; }
InternalMutationEvent(bool aIsTrusted, EventMessage aMessage)
: WidgetEvent(aIsTrusted, aMessage, eMutationEventClass)
, mAttrChange(0)
{
mFlags.mCancelable = false;
}
virtual WidgetEvent* Duplicate() const override
{
MOZ_ASSERT(mClass == eMutationEventClass,
"Duplicate() must be overridden by sub class");
InternalMutationEvent* result = new InternalMutationEvent(false, mMessage);
result->AssignMutationEventData(*this, true);
result->mFlags = mFlags;
return result;
}
nsCOMPtr<nsIDOMNode> mRelatedNode;
nsCOMPtr<nsIAtom> mAttrName;
nsCOMPtr<nsIAtom> mPrevAttrValue;
nsCOMPtr<nsIAtom> mNewAttrValue;
unsigned short mAttrChange;
void AssignMutationEventData(const InternalMutationEvent& aEvent,
bool aCopyTargets)
{
AssignEventData(aEvent, aCopyTargets);
mRelatedNode = aEvent.mRelatedNode;
mAttrName = aEvent.mAttrName;
mPrevAttrValue = aEvent.mPrevAttrValue;
mNewAttrValue = aEvent.mNewAttrValue;
mAttrChange = aEvent.mAttrChange;
}
};
// Bits are actually checked to optimize mutation event firing.
// That's why I don't number from 0x00. The first event should
// always be 0x01.
#define NS_EVENT_BITS_MUTATION_SUBTREEMODIFIED 0x01
#define NS_EVENT_BITS_MUTATION_NODEINSERTED 0x02
#define NS_EVENT_BITS_MUTATION_NODEREMOVED 0x04
#define NS_EVENT_BITS_MUTATION_NODEREMOVEDFROMDOCUMENT 0x08
#define NS_EVENT_BITS_MUTATION_NODEINSERTEDINTODOCUMENT 0x10
#define NS_EVENT_BITS_MUTATION_ATTRMODIFIED 0x20
#define NS_EVENT_BITS_MUTATION_CHARACTERDATAMODIFIED 0x40
} // namespace mozilla
#endif // mozilla_MutationEvent_h__
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