| /******************************************************************************* |
| * Copyright (c) 2005, 2012 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.bpel.ui.editparts.util; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.bpel.common.ui.decorator.DecorationLayout; |
| import org.eclipse.draw2d.IFigure; |
| import org.eclipse.draw2d.MouseEvent; |
| import org.eclipse.draw2d.MouseMotionListener; |
| import org.eclipse.draw2d.geometry.Dimension; |
| |
| |
| public abstract class BPELDecorationLayout extends DecorationLayout { |
| |
| private List listeners = new ArrayList(); |
| |
| class MouseMotionAdapter implements MouseMotionListener { |
| int listenerAnchor; |
| public MouseMotionAdapter(int anchor) { |
| this.listenerAnchor = anchor; |
| } |
| public void mouseDragged(MouseEvent me) { |
| } |
| public void mouseEntered(MouseEvent me) { |
| // fire listeners for the anchor point of the given mouse event |
| fireMarkerMotionListeners(listenerAnchor); |
| } |
| public void mouseExited(MouseEvent me) { |
| } |
| public void mouseHover(MouseEvent me) { |
| } |
| public void mouseMoved(MouseEvent me) { |
| } |
| } |
| |
| public interface AnchorMotionListener { |
| public void anchorEntered(int position); |
| } |
| public void addAnchorMotionListener(AnchorMotionListener listener) { |
| listeners.add(listener); |
| } |
| public void removeAnchorMotionListener(AnchorMotionListener listener) { |
| listeners.remove(listener); |
| } |
| private void fireMarkerMotionListeners(int anchor) { |
| Iterator it = listeners.iterator(); |
| while (it.hasNext()) { |
| AnchorMotionListener listener = (AnchorMotionListener)it.next(); |
| listener.anchorEntered(anchor); |
| } |
| } |
| |
| @Override |
| protected Dimension calculatePreferredSize(IFigure container, int wHint, int hHint) { |
| return new Dimension(0, 0); |
| } |
| |
| @Override |
| public void setConstraint(IFigure child, Object constraint) { |
| super.setConstraint(child, constraint); |
| child.addMouseMotionListener(new MouseMotionAdapter(((Integer)constraint).intValue())); |
| } |
| } |