jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/details/orm/OrmPersistentAttributeDetailsProvider.java

/*******************************************************************************
 * Copyright (c) 2009 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0, which accompanies this distribution
 * and is available at http://www.eclipse.org/legal/epl-v10.html.
 *
 * Contributors:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.jpa.ui.internal.details.orm;

import org.eclipse.jpt.common.ui.WidgetFactory;
import org.eclipse.jpt.common.utility.internal.Tools;
import org.eclipse.jpt.jpa.core.JpaStructureNode;
import org.eclipse.jpt.jpa.core.JptJpaCorePlugin;
import org.eclipse.jpt.jpa.core.context.orm.OrmReadOnlyPersistentAttribute;
import org.eclipse.jpt.jpa.core.context.orm.OrmStructureNodes;
import org.eclipse.jpt.jpa.ui.details.JpaDetailsPage;
import org.eclipse.jpt.jpa.ui.details.JpaDetailsProvider;
import org.eclipse.swt.widgets.Composite;

/**
 * This provider is responsible for creating the {@link JpaDetailsPage}
 * when the information comes from the XML file (either from the persistence
 * configuration or from the Mappings Descriptor).
 */
public class OrmPersistentAttributeDetailsProvider
	implements JpaDetailsProvider
{
	// singleton
	private static final JpaDetailsProvider INSTANCE = new OrmPersistentAttributeDetailsProvider();
	
	
	/**
	 * Return the singleton
	 */
	public static JpaDetailsProvider instance() {
		return INSTANCE;
	}
	
	
	/**
	 * Enforce singleton usage
	 */
	private OrmPersistentAttributeDetailsProvider() {
		super();
	}
	
	
	public boolean providesDetails(JpaStructureNode structureNode) {
			return Tools.valuesAreEqual(structureNode.getId(), OrmStructureNodes.PERSISTENT_ATTRIBUTE_ID)
				&& structureNode.getResourceType().getContentType().isKindOf(JptJpaCorePlugin.MAPPING_FILE_CONTENT_TYPE);
	}
	
	public JpaDetailsPage<OrmReadOnlyPersistentAttribute> buildDetailsPage(
			Composite parent,
			WidgetFactory widgetFactory) {
		
		return new OrmPersistentAttributeDetailsPage(parent, widgetFactory);
	}
}