flow4jresourceadapterfactory.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.core.adapters;

import net.orthanc.flow4j.designer.core.Flow4JPlugin;
import net.orthanc.flow4j.designer.core.Flow4JProject;
import net.orthanc.flow4j.designer.core.elements.Flow4JFile;
import net.orthanc.flow4j.designer.core.elements.IFlow4JElement;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdapterFactory;

/**
 * @author agreif
 *
 * TODO
 * 
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class Flow4JResourceAdapterFactory implements IAdapterFactory {

	/**
	 * TODO
	 * 
	 */
	public Flow4JResourceAdapterFactory() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see org.eclipse.core.runtime.IAdapterFactory#getAdapter(java.lang.Object, java.lang.Class)
	 */
	public Object getAdapter(Object adaptableObject, Class adapterType) {
		if (Flow4JFile.class.equals(adapterType))
			return createFlow4JFileResource((IFile)adaptableObject);

		if (Flow4JProject.class.equals(adapterType))
			return createFlow4JProjectResource((IProject)adaptableObject);

		if (IFlow4JElement.class.equals(adapterType)) {
			if (adaptableObject instanceof IFile)
				return createFlow4JFileResource((IFile)adaptableObject);

			if (adaptableObject instanceof IProject)
				return createFlow4JProjectResource((IProject)adaptableObject);
		}

		return null;
	}

	/**
	 * TODO
	 * @param file
	 * @return
	 */
	private Flow4JFile createFlow4JFileResource(IFile file) {
		if (Flow4JPlugin.FLOW4J_FILE_EXTENSION.equalsIgnoreCase(file.getFileExtension()))
			return new Flow4JFile(file);

		return null;
	}

	/**
	 * TODO
	 * @param aProject
	 * @return
	 */
	private Flow4JProject createFlow4JProjectResource(IProject aProject) {
		try {
			if (aProject.hasNature(Flow4JPlugin.FLOW4J_NATURE_ID)) {
				Flow4JProject project = new Flow4JProject();
				project.setProject(aProject);
				return project;
			}
		} catch (CoreException e) {
			System.err.println("Exception occurred in createFlow4JProjectResource: " + e.toString());
			e.printStackTrace();
		}

		return null;
	}

	/**
	 * @see org.eclipse.core.runtime.IAdapterFactory#getAdapterList()
	 */
	public Class[] getAdapterList() {
		Class[] classes = { IFlow4JElement.class, Flow4JFile.class, Flow4JProject.class };
		return classes;
	}

}