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