/* 
 * Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron, 
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. 
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED 
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE 
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR 
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. 
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, 
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS 
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY 
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
 package org.csstudio.sds.ui.internal.commands;

import org.csstudio.sds.model.AbstractWidgetModel;
import org.csstudio.sds.model.commands.SetPropertyCommand;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.CompoundCommand;

/**
 * A command, which applies position and location changes to widget models.
 * 
 * @author Sven Wende
 * @version $Revision: 1.7 $
 * 
 */
public final class SetBoundsCommand extends Command {
	/**
	 * Stores the new size and location of the widget.
	 */
	private final Rectangle _newBounds;

	/**
	 * Stores the old size and location.
	 */
	// private Rectangle _oldBounds;

	/**
	 * The element, whose constraints are to be changed.
	 */
	private final AbstractWidgetModel _widgetModel;
	
	private CompoundCommand chain;

	/**
	 * Create a command that can resize and/or move a widget model.
	 * 
	 * @param widgetModel
	 *            the widget model to manipulate
	 * @param newBounds
	 *            the new size and location
	 */
	public SetBoundsCommand(final AbstractWidgetModel widgetModel,
			final Rectangle newBounds) {
		assert widgetModel != null;
		assert newBounds != null;
		_widgetModel = widgetModel;
		_newBounds = newBounds.getCopy();
		setLabel("Position und Gr��e �ndern");
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void execute() {
		if(chain==null) {
			chain = new CompoundCommand();
			chain.add(new SetPropertyCommand(_widgetModel, AbstractWidgetModel.PROP_POS_X, _newBounds.x));
			chain.add(new SetPropertyCommand(_widgetModel, AbstractWidgetModel.PROP_POS_Y, _newBounds.y));
			chain.add(new SetPropertyCommand(_widgetModel, AbstractWidgetModel.PROP_WIDTH, _newBounds.width));
			chain.add(new SetPropertyCommand(_widgetModel, AbstractWidgetModel.PROP_HEIGHT, _newBounds.height));
		}
		chain.execute();
		
//		// remember old bounds
//		_oldBounds = new Rectangle(new Point(_widgetModel.getX(),
//				_widgetModel.getY()), new Dimension(_widgetModel.getWidth(),
//				_widgetModel.getHeight()));
//
//		doApplyBounds(_newBounds);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void undo() {
//		doApplyBounds(_oldBounds);
		chain.undo();
	}

	/**
	 * Applies the specified bounds to the widget model.
	 * @param bounds the bounds
	 */
/*	private void doApplyBounds(final Rectangle bounds) {
		// change element size
		_widgetModel.setSize(bounds.width, bounds.height);

		// change location
		_widgetModel.setLocation(bounds.x, bounds.y);
	}
*/
}