/* 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 "vungroupcmd.h"
#include "vselection.h"
#include "vdocument.h"
#include "vlayer.h"

VUnGroupCmd::VUnGroupCmd( VDocument *doc )
	: VCommand( doc, i18n( "Ungroup Objects" ), "14_ungroup" )
{
	m_group = dynamic_cast<VGroup *>( document()->selection()->objects().getFirst() );
	if( m_group )
		m_objects = m_group->objects();
}

VUnGroupCmd::~VUnGroupCmd()
{
}

void
VUnGroupCmd::execute()
{
	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_group->objects();

		for ( ; itr.current() ; ++itr )
		{
			itr.current()->invalidateBoundingBox();
			parent->append( itr.current() );
		}

		m_group->clear();
		m_group->setState( VObject::deleted );
	}

	setSuccess( true );
}

void
VUnGroupCmd::unexecute()
{
	if( !m_group )
		return;

	VObjectListIterator itr( m_objects );
	for ( ; itr.current() ; ++itr )
	{
		// TODO : remove from corresponding VLayer
		document()->activeLayer()->take( *itr.current() );
		m_group->append( itr.current() );
	}

	m_group->setState( VObject::normal );
	document()->append( m_group );
	document()->selection()->clear();
	document()->selection()->append( m_group );
	
	setSuccess( false );
}

