MoveLayerUpAction.java

/*
 *  Tiled Map Editor, (c) 2004-2006
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  Adam Turk <aturk@biggeruniverse.com>
 *  Bjorn Lindeijer <bjorn@lindeijer.nl>
 */

package tiled.mapeditor.actions;

import javax.swing.KeyStroke;

import tiled.core.Map;
import tiled.mapeditor.MapEditor;
import tiled.mapeditor.Resources;

/**
 * Swaps the currently selected layer with the layer above.
 *
 * @version $Id$
 */
public class MoveLayerUpAction extends AbstractLayerAction
{
    /**
	 * 
	 */
	private static final long serialVersionUID = -2012577686942427023L;

	public MoveLayerUpAction(MapEditor editor) {
        super(editor,
              Resources.getString("action.layer.moveup.name"),
              Resources.getString("action.layer.moveup.tooltip"),
              Resources.getIcon("gnome-up.png"));

        putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke("shift PAGE_UP"));
    }

    @Override
	protected void doPerformAction() {
        Map map = editor.getCurrentMap();
        int layerIndex = editor.getCurrentLayerIndex();
        int totalLayers = map.getTotalLayers();

        if (layerIndex < totalLayers - 1) {
            map.swapLayerUp(layerIndex);
            editor.setCurrentLayer(layerIndex + 1);
        }
    }
}