vlayercmd.cpp

/* This file is part of the KDE project
   Copyright (C) 2001, The Karbon Developers
   Copyright (C) 2002, The Karbon Developers
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
 
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/
 
#include "vlayer.h"
#include "vlayercmd.h"
#include "vdocument.h"
 
VLayerCmd::VLayerCmd( VDocument* doc, const TQString& name, VLayer* layer, VLayerCmdType order )
    : VCommand( doc, name, "14_layers" ), m_layer( layer ), m_cmdType( order )
{
    if( order == addLayer )
    {
        layer->setState( VObject::deleted );
        document()->insertLayer( layer );
    }
 
    m_oldState = layer->state();
}
 
void
VLayerCmd::execute()
{
    switch( m_cmdType )
    {
        case addLayer:
            m_layer->setState( VObject::normal );
        break;
 
        case deleteLayer:
            m_layer->setState( VObject::deleted );
        break;
 
        case raiseLayer:
            document()->raiseLayer( m_layer );
        break;
 
        case lowerLayer:
            document()->lowerLayer( m_layer );
        break;
    }
 
    setSuccess( true );
}
 
void
VLayerCmd::unexecute()
{
    switch ( m_cmdType )
    {
        case addLayer:
            m_layer->setState( VObject::deleted );
        break;
 
        case deleteLayer:
            m_layer->setState( m_oldState );
        break;
 
        case raiseLayer:
            document()->lowerLayer( m_layer );
        break;
 
        case lowerLayer:
            document()->raiseLayer( m_layer );
        break;
    }
 
    setSuccess( false );
}