designerflowimagegenerator.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.tools.ant;

import net.orthanc.flow4j.tools.ant.FlowImageGenerator;

import org.apache.tools.ant.BuildException;
import org.eclipse.ant.core.AntCorePlugin;
import org.eclipse.core.runtime.IProgressMonitor;

/**
 * Extends the <code>FlowImageGenerator</code> task an adds the ability
 * to access the eclipse monitor.
 * @author greifa
 */
public class DesignerFlowImageGenerator extends FlowImageGenerator {

	private IProgressMonitor monitor;

	/* (non-Javadoc)
	 * @see org.apache.tools.ant.Task#execute()
	 */
	public void execute() throws BuildException {
		monitor =
			(IProgressMonitor) getProject().getReferences().get(
				AntCorePlugin.ECLIPSE_PROGRESS_MONITOR);

		super.execute();
	}








	/* (non-Javadoc)
	 * @see net.orthanc.flow4j.tools.ant.FlowImageGenerator#notifyFlowStart()
	 */
	protected boolean notifyFlowStart() {
		if (monitor == null)
			return true;
			
		return ! monitor.isCanceled();
	}






	/* (non-Javadoc)
	 * @see net.orthanc.flow4j.tools.ant.FlowImageGenerator#notifyFlowFinished()
	 */
	protected void notifyFlowFinished() {
		if (monitor == null)
			return;
		
		monitor.worked(1);
	}

}