decisionflowletlabeleditpart.java

一个java写的business process management系统

/*
 * Copyright (c) 2003-2004, 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.figures.DecisionFlowletToolTipFigure;
import net.orthanc.flow4j.designer.figures.FlowletLabelFigure;
import net.orthanc.flow4j.designer.model.DecisionFlowletModelPart;
import net.orthanc.flow4j.designer.model.FlowletLabelModelPart;

import org.eclipse.draw2d.Label;

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

	/**
	 * Sets the figure's display text to the decision's description 
	 * if it is set. otherwise to the decision statement itself.
	 * @param flowletLabelFigure the figure.
	 * @see net.orthanc.flow4j.designer.editparts.FlowletLabelEditPart#adjustFlowletLabelFigure(net.orthanc.flow4j.designer.figures.FlowletLabelFigure)
	 */
	protected void adjustFlowletLabelFigure(FlowletLabelFigure flowletLabelFigure) {
		FlowletLabelModelPart labelModelPart =
			(FlowletLabelModelPart) getModel();
		String labelText = labelModelPart.getText();

		DecisionFlowletModelPart decision =
			(DecisionFlowletModelPart) labelModelPart.getFlowletWithlabel();
		if (decision.hasValidDescription())
			labelText = decision.getDescription();

		//	set the figure's text
		flowletLabelFigure.setText(labelText);
	}

	/**
	 * Reacts on property change of the modelPart. 
	 * Sets the label's text only if it has no valid description.
	 * @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
	 */
	public void propertyChange(PropertyChangeEvent event) {
		String propName = event.getPropertyName();
		if (FlowletLabelModelPart.PROP_LABEL.equals(propName)) {
			String statement = (String) event.getNewValue();
			adjustFlowletLabelFigure((FlowletLabelFigure) getFigure());
			FlowletLabelModelPart labelModelPart =
				(FlowletLabelModelPart) getModel();
			DecisionFlowletModelPart decision =
				(DecisionFlowletModelPart) labelModelPart.getFlowletWithlabel();
			if (!decision.hasValidDescription())
				 ((FlowletLabelFigure) getFigure()).setText(statement);
			//	update DecisionFlowletEditPart's tooltip
			DecisionFlowletEditPart decisionFlowletEditPart =
				(DecisionFlowletEditPart) getFlowletWithLabelEditPart();
			IFlow4JToolTip toolTip =
				decisionFlowletEditPart.getFlowDiagramElementToolTip();
			toolTip.update(
				DecisionFlowletToolTipFigure.TOOLTIP_PROP_STATEMENT,
				statement);
		} else
			super.propertyChange(event);
	}

	/**
	 * Returns the FlowletLabelEditManager for this type of EditPart.
	 * Sets the <code>forceDirty</code> flag to <code>true</code>
	 * because the edit text differs from the display text.
	 * @return the FlowletLabelEditManager for this type of EditPart.
	 * @see net.orthanc.flow4j.designer.editparts.FlowletLabelEditPart#getFlowletLabelEditManager()
	 */
	protected FlowletLabelEditManager getFlowletLabelEditManager() {
		return new FlowletLabelEditPart.FlowletLabelEditManager(
			this,
			new LabelCellEditorLocator((Label) getFigure()),
			true);
	}

}