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/*
**************************************************************************
description
--------------------
copyright : (C) 2000-2001 by Andreas Zehender
email : zehender@kde.org
**************************************************************************
**************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
**************************************************************************/
#ifndef PMDELETECOMMAND_H
#define PMDELETECOMMAND_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "pmcommand.h"
#include <tqstring.h>
#include "pmobject.h"
class PMMemento;
/**
* Class that stores undo information for the @ref PMDeleteCommand
*/
class PMDeleteInfo
{
public:
/**
* Creates undo information for the object deletedObject.
* The object has to have a parent!
*/
PMDeleteInfo( PMObject* deletedObject )
{
m_pDeletedObject = deletedObject;
m_pParent = deletedObject->parent( );
m_pPrevSibling = deletedObject->prevSibling( );
m_insertError = false;
}
/**
* Deletes the object. The object deletedObject will not be deleted!
*/
~PMDeleteInfo( ) { };
/**
* Returns a pointer to the deleted object
*/
PMObject* deletedObject( ) const { return m_pDeletedObject; }
/**
* Returns a pointer to the parent of the deleted object
*/
PMObject* parent( ) const { return m_pParent; }
/**
* Returns the previous sibling of the deleted object
*/
PMObject* prevSibling( ) const { return m_pPrevSibling; }
/**
* Returns true if this object could not be inserted in a move command
*/
bool insertError( ) const { return m_insertError; }
/**
* Sets the insert error flag
*/
void setInsertError( ) { m_insertError = true; }
private:
PMObject* m_pDeletedObject;
PMObject* m_pParent;
PMObject* m_pPrevSibling;
bool m_insertError;
};
typedef TQPtrList<PMDeleteInfo> PMDeleteInfoList;
typedef TQPtrListIterator<PMDeleteInfo> PMDeleteInfoListIterator;
/**
* Command class for removing PMObjects
*/
class PMDeleteCommand : public PMCommand
{
public:
/**
* Delete Command that removes the object obj.
*/
PMDeleteCommand( PMObject* obj );
/**
* Command that deletes a list of PMObjects. The list has to be sorted!
*/
PMDeleteCommand( const PMObjectList& list );
/**
* Deletes the command. The deleted object will be deleted, if removed
*/
virtual ~PMDeleteCommand( );
/** */
virtual int errorFlags( PMPart* );
protected:
/**
* Executes the command and stores undo information
*/
virtual void execute( PMCommandManager* theManager );
/**
* Undo the command
*/
virtual void undo( PMCommandManager* theManager );
private:
PMDeleteInfoList m_infoList;
bool m_executed, m_firstExecution;
PMObjectList m_links;
PMObjectList m_linkedDeclares;
bool m_linksCreated;
TQPtrList<PMMemento> m_dataChanges;
};
#endif
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