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146 lines
3.4 KiB
146 lines
3.4 KiB
/* This file is part of the KDE project
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Copyright (C) 2002, The Karbon Developers
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "vreplacingcmd.h"
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#include "vselection.h"
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#include "vdocument.h"
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VReplacingCmd::VReplacingCmd( VDocument* doc, const TQString& name )
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: VCommand( doc, name )
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{
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// Set members.
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m_oldObjects = doc ? document()->selection()->clone() : 0L;
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m_newObjects = 0L;
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}
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VReplacingCmd::~VReplacingCmd()
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{
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delete( m_oldObjects );
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delete( m_newObjects );
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}
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void
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VReplacingCmd::execute()
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{
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// Did we have at least once a success? Otherwise we don't get inserted
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// into the command history.
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bool successful = false;
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// Create new shapes if they don't exist yet.
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if( !m_newObjects )
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{
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m_newObjects = new VSelection();
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// Pointer to temporary object.
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VObject* newObject;
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VObjectListIterator itr( m_oldObjects->objects() );
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VObjectList rejects;
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for( ; itr.current(); ++itr )
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{
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// Clone object and visit the clone.
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newObject = itr.current()->clone();
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// Success.
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if( visit( *newObject ) )
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{
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successful = true;
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// Insert new shape right before old shape.
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itr.current()->parent()->insertInfrontOf(
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newObject, itr.current() );
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// Add new shape to list of new objects.
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m_newObjects->append( newObject );
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}
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// No success.
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else
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{
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rejects.append( itr.current() );
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// Delete temporary object.
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delete( newObject );
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}
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}
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VObjectListIterator jtr( rejects );
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for( ; jtr.current(); ++jtr )
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{
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// Don't consider this object in the future anymore.
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m_oldObjects->take( *jtr.current() );
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}
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}
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// Nothing to do.
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if( m_newObjects->objects().count() == 0 )
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return;
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VObjectListIterator itr( m_oldObjects->objects() );
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// Hide old objects.
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for( ; itr.current(); ++itr )
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{
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document()->selection()->take( *itr.current() );
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itr.current()->setState( VObject::deleted );
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}
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// Show new objects.
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for( itr = m_newObjects->objects(); itr.current(); ++itr )
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{
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itr.current()->setState( VObject::normal );
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document()->selection()->append( itr.current() );
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}
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// Tell command history wether we had success at least once.
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setSuccess( successful );
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}
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void
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VReplacingCmd::unexecute()
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{
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// Nothing to do.
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if( m_newObjects->objects().count() == 0 )
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return;
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VObjectListIterator itr( m_oldObjects->objects() );
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// Show old objects.
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for( ; itr.current(); ++itr )
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{
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itr.current()->setState( VObject::normal );
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document()->selection()->append( itr.current() );
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}
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// Hide new objects.
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for( itr = m_newObjects->objects(); itr.current(); ++itr )
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{
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document()->selection()->take( *itr.current() );
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itr.current()->setState( VObject::deleted );
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}
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// Reset success for command history.
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setSuccess( false );
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}
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