/*
* Copyright (c) 2006 Stiftung Deutsches Elektronen-Synchroton,
* 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 java.util.Iterator;
import org.csstudio.sds.model.AbstractWidgetModel;
import org.csstudio.sds.model.GuideModel;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.gef.commands.Command;
/**
* A Command to move a Guide.
* @author Kai Meyer
*/
public final class MoveGuideCommand extends Command {
/**
* The distance.
*/
private int _pDelta;
/**
* The guide, which position has changed.
*/
private GuideModel _guide;
/**
* Constructor.
* @param guide
* the guide, which position has changed
* @param pDelta
* the distance
*/
public MoveGuideCommand(final GuideModel guide, final int pDelta) {
_pDelta = pDelta;
_guide = guide;
}
/**
* {@inheritDoc}
*/
@Override
public void execute() {
_guide.setPosition(_guide.getPosition() + _pDelta);
Iterator<AbstractWidgetModel> iter = _guide.getAttachedModels().iterator();
while (iter.hasNext()) {
AbstractWidgetModel model = iter.next();
Point location = new Point(model.getX(), model.getY());
if (_guide.isHorizontal()) {
location.y += _pDelta;
} else {
location.x += _pDelta;
}
model.setLocation(location.x, location.y);
}
}
/**
* {@inheritDoc}
*/
@Override
public void undo() {
_guide.setPosition(_guide.getPosition() - _pDelta);
Iterator<AbstractWidgetModel> iter = _guide.getAttachedModels().iterator();
while (iter.hasNext()) {
AbstractWidgetModel model = iter.next();
Point location = new Point(model.getX(), model.getY());
if (_guide.isHorizontal()) {
location.y -= _pDelta;
} else {
location.x -= _pDelta;
}
model.setLocation(location.x, location.y);
}
}
}