| package org.eclipse.epf.authoring.gef.commands; |
| |
| import org.eclipse.draw2d.geometry.Point; |
| import org.eclipse.epf.diagram.model.Node; |
| import org.eclipse.gef.commands.Command; |
| |
| /** |
| * @author Shashidhar Kannoori |
| * Command to handle Node's height changes. |
| * ChangeBoundsCommand handles Node's width changes. |
| */ |
| public class ChangeHeightCommand extends Command { |
| |
| private Node node; |
| |
| private Point newLocation, oldLocation; |
| |
| private int newHeight, oldHeight; |
| |
| private static final String LABEL = "Change Height Command"; //$NON-NLS-1$ |
| |
| public ChangeHeightCommand(Node node, Point newLocation, int newHeight) { |
| super(ChangeHeightCommand.LABEL); |
| setNode(node); |
| setNewLocation(newLocation.getCopy()); |
| this.newHeight = newHeight; |
| } |
| |
| public boolean canExecute() { |
| return node != null |
| && newLocation != null |
| && (newHeight != oldHeight || !(node.getLocation() |
| .equals(newLocation))); |
| } |
| |
| public void execute() { |
| oldLocation = node.getLocation(); |
| oldHeight = node.getHeight(); |
| redo(); |
| } |
| |
| public void redo() { |
| node.setLocation(newLocation); |
| node.setHeight(newHeight); |
| } |
| |
| public void setNode(Node node) { |
| this.node = node; |
| } |
| |
| public void setNewLocation(Point loc) { |
| newLocation = loc; |
| } |
| |
| public void undo() { |
| node.setHeight(oldHeight); |
| node.setLocation(oldLocation); |
| } |
| } |