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//
// MutationEvent.h
//
// Library: XML
// Package: DOM
// Module: DOMEvents
//
// Definition of the DOM MutationEvent class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef DOM_MutationEvent_INCLUDED
#define DOM_MutationEvent_INCLUDED
#include "Poco/XML/XML.h"
#include "Poco/DOM/Event.h"
namespace Poco {
namespace XML {
class Node;
class XML_API MutationEvent: public Event
/// The MutationEvent interface provides specific contextual
/// information associated with Mutation events.
{
public:
enum AttrChangeType
{
MODIFICATION = 1, /// The Attr was modified in place.
ADDITION = 2, /// The Attr was just added.
REMOVAL = 3 /// The Attr was just removed.
};
Node* relatedNode() const;
/// relatedNode is used to identify a secondary node related to a mutation
/// event. For example, if a mutation event is dispatched
/// to a node indicating that its parent has changed, the relatedNode is the
/// changed parent. If an event is instead dispatched to a
/// subtree indicating a node was changed within it, the relatedNode is
/// the changed node. In the case of the DOMAttrModified
/// event it indicates the Attr node which was modified, added, or removed.
const XMLString& prevValue() const;
/// prevValue indicates the previous value of the Attr node in DOMAttrModified
/// events, and of the CharacterData node in DOMCharDataModified events.
const XMLString& newValue() const;
/// newValue indicates the new value of the Attr node in DOMAttrModified
/// events, and of the CharacterData node in DOMCharDataModified events.
const XMLString& attrName() const;
/// attrName indicates the name of the changed Attr node in a DOMAttrModified event.
AttrChangeType attrChange() const;
/// attrChange indicates the type of change which triggered the
/// DOMAttrModified event. The values can be MODIFICATION,
/// ADDITION, or REMOVAL.
void initMutationEvent(const XMLString& type, bool canBubble, bool cancelable, Node* relatedNode,
const XMLString& prevValue, const XMLString& newValue, const XMLString& attrName, AttrChangeType change);
/// The initMutationEvent method is used to initialize the value of a
/// MutationEvent created through the DocumentEvent
/// interface. This method may only be called before the MutationEvent
/// has been dispatched via the dispatchEvent method,
/// though it may be called multiple times during that phase if
/// necessary. If called multiple times, the final invocation takes
/// precedence.
// Event Types
static const XMLString DOMSubtreeModified;
static const XMLString DOMNodeInserted;
static const XMLString DOMNodeRemoved;
static const XMLString DOMNodeRemovedFromDocument;
static const XMLString DOMNodeInsertedIntoDocument;
static const XMLString DOMAttrModified;
static const XMLString DOMCharacterDataModified;
protected:
MutationEvent(Document* pOwnerDocument, const XMLString& type);
MutationEvent(Document* pOwnerDocument, const XMLString& type, EventTarget* pTarget, bool canBubble, bool cancelable, Node* relatedNode);
MutationEvent(Document* pOwnerDocument, const XMLString& type, EventTarget* pTarget, bool canBubble, bool cancelable, Node* relatedNode,
const XMLString& prevValue, const XMLString& newValue, const XMLString& attrName, AttrChangeType change);
~MutationEvent();
private:
XMLString _prevValue;
XMLString _newValue;
XMLString _attrName;
AttrChangeType _change;
Node* _pRelatedNode;
friend class AbstractNode;
friend class Document;
};
//
// inlines
//
inline Node* MutationEvent::relatedNode() const
{
return _pRelatedNode;
}
inline const XMLString& MutationEvent::prevValue() const
{
return _prevValue;
}
inline const XMLString& MutationEvent::newValue() const
{
return _newValue;
}
inline const XMLString& MutationEvent::attrName() const
{
return _attrName;
}
inline MutationEvent::AttrChangeType MutationEvent::attrChange() const
{
return _change;
}
} } // namespace Poco::XML
#endif // DOM_MutationEvent_INCLUDED
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