startpropertiespropertysource.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.model.propertysources;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

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

import org.eclipse.ui.views.properties.IPropertyDescriptor;
import org.eclipse.ui.views.properties.IPropertySource;
import org.eclipse.ui.views.properties.TextPropertyDescriptor;

/**
 * Class StartPropertiesPropertySource TODO
 * @author greifa
 * 
 */
public class StartPropertiesPropertySource implements IPropertySource {

	private static final String PREFIX_START_FLOWLET_PROPERTY = "startFlowletProperty_"; //$NON-NLS-1$

	private StartFlowletModelPart startFlowlet;

	/**
	 * Constructor
	 * @param startFlowlet	the corresponding StartFlowlet
	 */
	public StartPropertiesPropertySource(StartFlowletModelPart startFlowlet) {
		this.startFlowlet = startFlowlet;
	}

	/**
	 * @see org.eclipse.ui.views.properties.IPropertySource#getEditableValue()
	 */
	public Object getEditableValue() {
		return this;
	}

	/**
	 * Returns the descriptors for the task's properties.
	 * @see org.eclipse.ui.views.properties.IPropertySource#getPropertyDescriptors()
	 */
	public IPropertyDescriptor[] getPropertyDescriptors() {
		List tempPropDescs = new ArrayList();

		for (Iterator iter =
			startFlowlet.getStartProperties().entrySet().iterator();
			iter.hasNext();
			) {
			Map.Entry entry = (Map.Entry) iter.next();
			String propName = (String) entry.getKey();
			tempPropDescs.add(
				new TextPropertyDescriptor(
					PREFIX_START_FLOWLET_PROPERTY + propName,
					propName));
		}
		return (
			IPropertyDescriptor[]) tempPropDescs
				.toArray(new IPropertyDescriptor[] {
		});
	}

	/**
	 * Returns the property's value or <code>null</code> if not set.
	 * @param propName the propery's name
	 * @see org.eclipse.ui.views.properties.IPropertySource#getPropertyValue(java.lang.Object)
	 */
	public Object getPropertyValue(Object propName) {
		if (((String) propName).startsWith(PREFIX_START_FLOWLET_PROPERTY))
			return startFlowlet.getStartProperties().get(
				((String) propName).substring(
					PREFIX_START_FLOWLET_PROPERTY.length()));

		return null;
	}

	/**
	 * @see org.eclipse.ui.views.properties.IPropertySource#isPropertySet(java.lang.Object)
	 */
	public boolean isPropertySet(Object id) {
		return true;
	}

	/**
	 * @see org.eclipse.ui.views.properties.IPropertySource#resetPropertyValue(java.lang.Object)
	 */
	public void resetPropertyValue(Object id) {

	}

	/**
	 * sets the property's value. Truncates the prefix, in order to get the key.
	 * @see org.eclipse.ui.views.properties.IPropertySource#setPropertyValue(java.lang.Object, java.lang.Object)
	 */
	public void setPropertyValue(Object propName, Object value) {
		String fullPropName = (String)propName;
		if (fullPropName.startsWith(PREFIX_START_FLOWLET_PROPERTY)) {
			String propKey = fullPropName.substring(PREFIX_START_FLOWLET_PROPERTY.length());
			startFlowlet.getStartProperties().put(propKey, value);
		}
	}

	/**
	 * @see java.lang.Object#toString()
	 */
	public String toString() {
		StringBuffer buf = new StringBuffer(); //$NON-NLS-1$
		buf.append("["); //$NON-NLS-1$
		for (Iterator iter =
			startFlowlet.getStartProperties().keySet().iterator();
			iter.hasNext();
			) {
			String propName = (String) iter.next();
			buf.append(propName);
			if (iter.hasNext())
				buf.append(", "); //$NON-NLS-1$
		}
		buf.append("]"); //$NON-NLS-1$

		return buf.toString();
	}

}