1 /****************************************************************************
2 ** $Id: rs_layerlistlistener.h 1648 2003-06-11 06:56:01Z andrew $
4 ** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
6 ** This file is part of the qcadlib Library project.
8 ** This file may be distributed and/or modified under the terms of the
9 ** GNU General Public License version 2 as published by the Free Software
10 ** Foundation and appearing in the file LICENSE.GPL included in the
11 ** packaging of this file.
13 ** Licensees holding valid qcadlib Professional Edition licenses may use
14 ** this file in accordance with the qcadlib Commercial License
15 ** Agreement provided with the Software.
17 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
18 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 ** See http://www.ribbonsoft.com for further details.
22 ** Contact info@ribbonsoft.com if any conditions of this licensing are
25 **********************************************************************/
27 #ifndef RS_LAYERLISTLISTENER_H
28 #define RS_LAYERLISTLISTENER_H
33 * This class is an interface for classes that are interested in
34 * knowing about changes in the layer list.
36 class RS_LayerListListener
39 RS_LayerListListener() {}
40 virtual ~RS_LayerListListener() {}
43 * Called when the active layer changes.
45 virtual void layerActivated(RS_Layer *) {}
48 * Called when a new layer is added to the list.
50 virtual void layerAdded(RS_Layer *) {}
53 * Called when a layer is removed from the list.
55 virtual void layerRemoved(RS_Layer *) {}
58 * Called when a layer's attributes are modified.
60 virtual void layerEdited(RS_Layer *) {}
63 * Called when a layer's visibility is toggled.
65 virtual void layerToggled(RS_Layer *) {}