vgroupcmd.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 <tdelocale.h>
 
#include "vgroup.h"
#include "vgroupcmd.h"
#include "vselection.h"
#include "vdocument.h"
#include "vlayer.h"
 
VGroupCmd::VGroupCmd( VDocument *doc )
    : VCommand( doc, i18n( "Group Objects" ), "14_group" )
{
    m_selection = document()->selection()->clone();
 
    m_group = 0L;
}
 
VGroupCmd::~VGroupCmd()
{
    delete( m_selection );
}
 
void
VGroupCmd::execute()
{
    m_group = new VGroup( document()->activeLayer() );
 
    VObjectListIterator itr( m_selection->objects() );
    for ( ; itr.current() ; ++itr )
    {
        // remove from corresponding parent
        VGroup *parent = dynamic_cast<VGroup*>( itr.current()->parent() );
        if( parent )
            parent->take( *itr.current() );
 
        m_group->append( itr.current() );
    }
 
    document()->append( m_group );
    document()->selection()->clear();
    document()->selection()->append( m_group );
 
    setSuccess( true );
}
 
void
VGroupCmd::unexecute()
{
    if( ! m_group ) 
        return;
 
    document()->selection()->clear();
 
    VObjectListIterator itr( m_group->objects() );
    for ( ; itr.current() ; ++itr )
    {
        // TODO : remove from corresponding VLayer
        document()->selection()->append( itr.current() );
    }
 
    VGroup* parent;
    if( ( parent = dynamic_cast<VGroup*>( m_group->parent() ) ) )
    {
        // unregister from parent:
        parent->take( *m_group );
 
        // inform all objects in this group about their new parent
        VObjectListIterator itr = m_selection->objects();
 
        for ( ; itr.current() ; ++itr )
        {
            parent->append( itr.current() );
        }
 
        m_group->clear();
        m_group->setState( VObject::deleted );
    }
    
    setSuccess( false );
}