booleantransitioneditpart.java

一个java写的business process management系统

/*
 * Copyright (c) 2003, Alexander Greif
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Flow4J-Eclipse project nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

package net.orthanc.flow4j.designer.editparts;

import java.beans.PropertyChangeEvent;

import net.orthanc.flow4j.designer.model.BooleanTransitionModelPart;

import org.eclipse.draw2d.Connection;
import org.eclipse.draw2d.ConnectionEndpointLocator;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.Label;

/**
 * @author greifa
 *
 * TODO
 * 
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class BooleanTransitionEditPart extends TransitionEditPart {

	Label sourceBooleanLabel = new Label();


	/**
	 * Adds boolean labels to the Transition.
	 * @see org.eclipse.gef.editparts.AbstractGraphicalEditPart#createFigure()
	 */
	protected IFigure createFigure() {
		Connection transition = (Connection)super.createFigure();
		
		ConnectionEndpointLocator sourceEndpointLocator = new ConnectionEndpointLocator(transition, false);
		sourceEndpointLocator.setVDistance(10);
		sourceEndpointLocator.setUDistance(10);
		//	must correspont with the modelPart's initial value
		sourceBooleanLabel.setText(((BooleanTransitionModelPart)getModel()).getStringValue());
		transition.add(sourceBooleanLabel, sourceEndpointLocator);
		
		return transition;
	}







	/**
	 * Listens to changes in properties of the BooleanTransitionModelPart (like the
	 * contents being carried), and reflects is in the visuals.
	 *
	 * @param event  Event notifying the change.
	 * @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
	 */
	public void propertyChange(PropertyChangeEvent event) {
		String property = event.getPropertyName();
		if (BooleanTransitionModelPart.PROP_BOOLEAN_VALUE.equals(property))
			sourceBooleanLabel.setText(((BooleanTransitionModelPart.Value)event.getNewValue()).toString());
		else
			super.propertyChange(event);
	}










}