taskpropertypropertysource.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 net.orthanc.flow4j.designer.core.Flow4JPlugin;
import net.orthanc.flow4j.designer.model.JavaTaskFlowletModelPart;
import net.orthanc.flow4j.designer.model.propertydescriptors.ROTextPropertyDescriptor;
import net.orthanc.flow4j.runtime.descriptors.TaskPropertyDescriptor;

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

/**
 * Class TaskPropertiesPropertySource TODO
 * @author agreif
 * 
 */
public class TaskPropertyPropertySource implements IPropertySource {

	public static final String PROP_TASK_PROPERTY_DESCRIPTION = "task_property_description"; //$NON-NLS-1$
	public static final String PROP_TASK_PROPERTY_VALUE = "task_property_value"; //$NON-NLS-1$

	private static IPropertyDescriptor[] descriptors;

	private JavaTaskFlowletModelPart taskFlowlet;
	private TaskPropertyDescriptor propDesc;

	static {
		descriptors =
			new IPropertyDescriptor[] {
				new ROTextPropertyDescriptor(
					PROP_TASK_PROPERTY_DESCRIPTION,
					Flow4JPlugin.getResourceString(
						"PropertyDescriptor_TaskFlowlet_Property_Description.label")),
				new TextPropertyDescriptor(
					PROP_TASK_PROPERTY_VALUE,
					Flow4JPlugin.getResourceString(
						"PropertyDescriptor_TaskFlowlet_Property_Value.label"))};
	}

	/**
	 * Constructor
	 * @param taskFlowlet
	 */
	public TaskPropertyPropertySource(JavaTaskFlowletModelPart taskFlowlet,
	TaskPropertyDescriptor desc) {
		this.taskFlowlet = taskFlowlet;
		propDesc = desc;
	}

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

	/**
	 * @see org.eclipse.ui.views.properties.IPropertySource#getPropertyDescriptors()
	 */
	public IPropertyDescriptor[] getPropertyDescriptors() {
		return descriptors;
	}

	/* 
	 * @see org.eclipse.ui.views.properties.IPropertySource#getPropertyValue(java.lang.Object)
	 */
	public Object getPropertyValue(Object id) {
		if (PROP_TASK_PROPERTY_DESCRIPTION.equals(id))
			return propDesc.getDescription();

		if (PROP_TASK_PROPERTY_VALUE.equals(id)) {
			String propValue = taskFlowlet.getTaskProperty(propDesc.getName());
				
			return propValue == null ? "" : propValue;
		}
		
		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 task property. Creates a new Hasmap for the properties if 
	 * it does not exist yet.
	 * @see org.eclipse.ui.views.properties.IPropertySource#setPropertyValue(java.lang.Object, java.lang.Object)
	 */
	public void setPropertyValue(Object id, Object value) {
		if (PROP_TASK_PROPERTY_VALUE.equals(id)) {
			taskFlowlet.setTaskProperty(propDesc.getName(), (String)value);
		}
	}

	/**
	 * @see java.lang.Object#toString()
	 */
	public String toString() {
		return new String("[" + getPropertyValue(PROP_TASK_PROPERTY_VALUE) //$NON-NLS-1$
		+"]"); //$NON-NLS-1$
	}

}