karbon

vlayercmd.cc

00001 /* This file is part of the KDE project
00002    Copyright (C) 2001, The Karbon Developers
00003    Copyright (C) 2002, The Karbon Developers
00004 
00005    This library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Library General Public
00007    License as published by the Free Software Foundation; either
00008    version 2 of the License, or (at your option) any later version.
00009 
00010    This library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Library General Public License for more details.
00014 
00015    You should have received a copy of the GNU Library General Public License
00016    along with this library; see the file COPYING.LIB.  If not, write to
00017    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018  * Boston, MA 02110-1301, USA.
00019 */
00020 
00021 #include "vlayer.h"
00022 #include "vlayercmd.h"
00023 #include "vdocument.h"
00024 
00025 VLayerCmd::VLayerCmd( VDocument* doc, const QString& name, VLayer* layer, VLayerCmdType order )
00026     : VCommand( doc, name, "14_layers" ), m_layer( layer ), m_cmdType( order )
00027 {
00028     if( order == addLayer )
00029     {
00030         layer->setState( VObject::deleted );
00031         document()->insertLayer( layer );
00032     }
00033 
00034     m_oldState = layer->state();
00035 }
00036 
00037 void
00038 VLayerCmd::execute()
00039 {
00040     switch( m_cmdType )
00041     {
00042         case addLayer:
00043             m_layer->setState( VObject::normal );
00044         break;
00045 
00046         case deleteLayer:
00047             m_layer->setState( VObject::deleted );
00048         break;
00049 
00050         case raiseLayer:
00051             document()->raiseLayer( m_layer );
00052         break;
00053 
00054         case lowerLayer:
00055             document()->lowerLayer( m_layer );
00056         break;
00057     }
00058 
00059     setSuccess( true );
00060 }
00061 
00062 void
00063 VLayerCmd::unexecute()
00064 {
00065     switch ( m_cmdType )
00066     {
00067         case addLayer:
00068             m_layer->setState( VObject::deleted );
00069         break;
00070 
00071         case deleteLayer:
00072             m_layer->setState( m_oldState );
00073         break;
00074 
00075         case raiseLayer:
00076             document()->lowerLayer( m_layer );
00077         break;
00078 
00079         case lowerLayer:
00080             document()->raiseLayer( m_layer );
00081         break;
00082     }
00083 
00084     setSuccess( false );
00085 }
00086 
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