flowletlabeldirecteditpolicy.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.policies;

import net.orthanc.flow4j.designer.editparts.FlowletLabelEditPart;
import net.orthanc.flow4j.designer.model.FlowletLabelModelPart;
import net.orthanc.flow4j.designer.model.commands.FlowletLabelCommand;

import org.eclipse.draw2d.Label;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.DirectEditPolicy;
import org.eclipse.gef.requests.DirectEditRequest;

/**
 * Edit policy fot the flowlet label's direct editing feature.
 * @author alex
 */
public class FlowletLabelDirectEditPolicy extends DirectEditPolicy {

	/**
	 * @see DirectEditPolicy#getDirectEditCommand(DirectEditRequest)
	 */
	protected Command getDirectEditCommand(DirectEditRequest edit) {
		String labelText = (String)edit.getCellEditor().getValue();
		FlowletLabelEditPart label = (FlowletLabelEditPart)getHost();
		FlowletLabelCommand command = new FlowletLabelCommand((FlowletLabelModelPart)label.getModel(), labelText);
		return command;
	}

	/**
	 * @see DirectEditPolicy#showCurrentEditValue(DirectEditRequest)
	 */
	protected void showCurrentEditValue(DirectEditRequest request) {
		String value = (String)request.getCellEditor().getValue();
		((Label)getHostFigure()).setText(value);
		//hack to prevent async layout from placing the cell editor twice.
		getHostFigure().getUpdateManager().performUpdate();
	}

}