/* 
 * Copyright (c) 2006 Stiftung Deutsches Elektronen-Synchroton, 
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. 
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED 
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE 
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR 
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. 
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, 
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS 
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY 
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
package org.csstudio.sds.ui.internal.adapters;

import org.csstudio.sds.internal.rules.RuleDescriptor;
import org.csstudio.sds.ui.SdsUiPlugin;
import org.csstudio.ui.util.CustomMediaFactory;
import org.eclipse.core.runtime.IAdapterFactory;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.model.IWorkbenchAdapter;
import org.eclipse.ui.model.WorkbenchAdapter;

/**
 * An adapter factory for Rules.
 * 
 * @author Sven Wende
 * 
 */
public final class RuleDescriptorAdapterFactory implements IAdapterFactory {

	/**
	 * {@inheritDoc}
	 */
	@Override
	public Object getAdapter(final Object adaptableObject,
			final Class adapterType) {
		assert adaptableObject != null;
		assert adapterType != null;
		assert adaptableObject instanceof RuleDescriptor : "adaptableObject instanceof RuleDescriptor"; //$NON-NLS-1$

		final RuleDescriptor rule = (RuleDescriptor) adaptableObject;

		if (adapterType == IWorkbenchAdapter.class) {
			return new WorkbenchAdapter() {
				@Override
				public String getLabel(final Object o) {
					String result = rule.getDescription();

					if (rule.isScriptedRule()) {
						result += " (ECMA Script)"; //$NON-NLS-1$
					} else {
						result += " (Java)"; //$NON-NLS-1$
					}

					return result;
				}

				@Override
				public ImageDescriptor getImageDescriptor(final Object object) {
					// fallback
					ImageDescriptor result = null;

					if (rule.isScriptedRule()) {
						result = CustomMediaFactory.getInstance()
								.getImageDescriptorFromPlugin(
										SdsUiPlugin.PLUGIN_ID,
										"icons/rule_script.gif"); //$NON-NLS-1$
					} else {
						result = CustomMediaFactory.getInstance()
								.getImageDescriptorFromPlugin(
										SdsUiPlugin.PLUGIN_ID,
										"icons/rule_java.gif"); //$NON-NLS-1$

					}

					return result;
				}
			};
		}
		return null;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public Class[] getAdapterList() {
		return new Class[] { IWorkbenchAdapter.class };
	}

}