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/******************************************************************************
*
* $Id$
*
*
* Copyright (C) 1997-2002 by Dimitri van Heesch.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation under the terms of the GNU General Public License is hereby
* granted. No representations are made about the suitability of this software
* for any purpose. It is provided "as is" without express or implied warranty.
* See the GNU General Public License for more details.
*
*/
#ifndef _GRAPHHANDLER_H
#define _GRAPHHANDLER_H
#include "stringimpl.h"
#include "doxmlintf.h"
#include "basehandler.h"
#include "baseiterator.h"
class NodeHandler;
class ChildNodeHandler;
class EdgeLabelHandler;
class GraphHandler : public IGraph, public BaseHandler<GraphHandler>
{
friend class NodeIterator;
public:
GraphHandler(IBaseHandler *parent,const char *endTag);
virtual ~GraphHandler();
void startGraph(const QXmlAttributes &attrib);
void endGraph();
void startNode(const QXmlAttributes &attrib);
NodeHandler *getNodeById(const QString &id) const;
// IGraph
virtual INodeIterator *nodes() const;
private:
IBaseHandler *m_parent;
QList<NodeHandler> m_nodes;
QDict<NodeHandler> *m_nodeDict;
};
//----------------------------------------------------------------------
class NodeHandler : public INode, public BaseHandler<NodeHandler>
{
friend class ChildNodeIterator;
public:
NodeHandler(GraphHandler *gh);
virtual ~NodeHandler();
void startNode(const QXmlAttributes &attrib);
void endNode();
void startLabel(const QXmlAttributes &attrib);
void endLabel();
void startLink(const QXmlAttributes &attrib);
void endLink();
void startChildNode(const QXmlAttributes &attrib);
// INode
virtual const IString *id() const { return &m_id; }
virtual const IString *label() const { return &m_label; }
virtual const IString *linkId() const { return &m_link; }
virtual IChildNodeIterator *children() const;
private:
IBaseHandler *m_parent;
StringImpl m_id;
StringImpl m_label;
StringImpl m_link;
QList<ChildNodeHandler> m_children;
GraphHandler *m_graph;
};
class NodeIterator : public BaseIterator<INodeIterator,INode,NodeHandler>
{
public:
NodeIterator(const GraphHandler &handler) :
BaseIterator<INodeIterator,INode,NodeHandler>(handler.m_nodes) {}
};
//----------------------------------------------------------------------
class ChildNodeHandler : public IChildNode, public BaseHandler<ChildNodeHandler>
{
friend class EdgeLabelIterator;
public:
ChildNodeHandler(IBaseHandler *parent,GraphHandler *gh);
virtual ~ChildNodeHandler();
void startChildNode(const QXmlAttributes &attrib);
void endChildNode();
void startEdgeLabel(const QXmlAttributes &attrib);
// IChildNode
virtual INode *node() const;
virtual NodeRelation relation() const { return m_relation; }
virtual const IString * relationString() const { return &m_relationString; }
virtual IEdgeLabelIterator *edgeLabels() const;
private:
IBaseHandler *m_parent;
QString m_id;
NodeRelation m_relation;
StringImpl m_relationString;
QList<EdgeLabelHandler> m_edgeLabels;
GraphHandler *m_graph;
};
class ChildNodeIterator : public BaseIterator<IChildNodeIterator,IChildNode,ChildNodeHandler>
{
public:
ChildNodeIterator(const NodeHandler &handler) :
BaseIterator<IChildNodeIterator,IChildNode,ChildNodeHandler>(handler.m_children) {}
};
//----------------------------------------------------------------------
class EdgeLabelHandler : public IEdgeLabel, public BaseHandler<EdgeLabelHandler>
{
friend class EdgeLabelIterator;
public:
EdgeLabelHandler(IBaseHandler *parent);
virtual ~EdgeLabelHandler();
void startEdgeLabel(const QXmlAttributes &attrib);
void endEdgeLabel();
// IEdgeLabel
virtual const IString *label() const { return &m_label; }
private:
IBaseHandler *m_parent;
StringImpl m_label;
};
class EdgeLabelIterator : public BaseIterator<IEdgeLabelIterator,IEdgeLabel,EdgeLabelHandler>
{
public:
EdgeLabelIterator(const ChildNodeHandler &handler) :
BaseIterator<IEdgeLabelIterator,IEdgeLabel,EdgeLabelHandler>(handler.m_edgeLabels) {}
};
void graphhandler_init();
void graphhandler_exit();
#endif
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