/*******************************************************************************
 * Copyright (c) 2003, 2005 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.j2ee.internal.ejb.provider;


import java.util.Collection;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jem.java.JavaClass;
import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jst.j2ee.ejb.EnterpriseBean;
import org.eclipse.jst.j2ee.ejb.Entity;
import org.eclipse.jst.j2ee.internal.plugin.J2EEEditorUtility;
import org.eclipse.jst.j2ee.internal.plugin.J2EEUIPlugin;
import org.eclipse.swt.graphics.Image;
import org.eclipse.wst.common.frameworks.internal.ui.OverlayIcon;

public abstract class J2EEJavaClassProviderHelper implements IAdaptable {
	private EnterpriseBean ejb;
	public static final Class IRESOURCE_CLASS = IResource.class;
	public static final Class IPROJECT_CLASS = IProject.class;

	/**
	 * J2EEJavaClassProviderHelper constructor comment.
	 */
	public J2EEJavaClassProviderHelper(EnterpriseBean anEJB) {
		super();
		setEjb(anEJB);
	}

	public static void addChildren(Entity ejb, Collection children) {
		addChildren((EnterpriseBean) ejb, children);
		if (ejb.getPrimaryKey() != null)
			children.add(new PrimaryKeyClassProviderHelper(ejb));
	}

	public static void addChildren(EnterpriseBean ejb, Collection children) {

		if (ejb.getHomeInterface() != null)
			children.add(new HomeInterfaceProviderHelper(ejb));
		if (ejb.getRemoteInterface() != null)
			children.add(new RemoteInterfaceProviderHelper(ejb));
		if (ejb.getLocalHomeInterface() != null)
			children.add(new LocalHomeInterfaceProviderHelper(ejb));
		if (ejb.getLocalInterface() != null)
			children.add(new LocalInterfaceProviderHelper(ejb));
		if (ejb.getEjbClass() != null)
			children.add(new BeanClassProviderHelper(ejb));
	}

	protected Image createImage() {
		ImageDescriptor base = J2EEUIPlugin.getDefault().getImageDescriptor("jcu_obj");//$NON-NLS-1$
		if (base == null)
			return null;
		ImageDescriptor overlay = getOverlayDescriptor();
		if (overlay == null)
			return base.createImage();
		return new OverlayIcon(base, new ImageDescriptor[][]{{overlay}}).createImage();
	}

	/**
	 * Insert the method's description here. Creation date: (7/11/2001 1:47:24 PM)
	 * 
	 * @return org.eclipse.jst.j2ee.internal.internal.ejb.EnterpriseBean
	 */
	public org.eclipse.jst.j2ee.ejb.EnterpriseBean getEjb() {
		return ejb;
	}

	public Image getImage() {
		return null;
	}

	/**
	 * Insert the method's description here. Creation date: (6/20/2001 10:30:54 PM)
	 * 
	 * @return JavaClass
	 */
	public abstract JavaClass getJavaClass();

	protected ImageDescriptor getOverlayDescriptor() {
		return J2EEUIPlugin.getDefault().getImageDescriptor(getOverlayKey());
	}

	protected abstract String getOverlayKey();

	protected IProject getProject() {
		return ProjectUtilities.getProject(getJavaClass());
	}

	public String getStatusLineMessage() {
		if (getJavaClass() != null)
			return getTypeString(getJavaClass().getQualifiedName());
		return ""; //$NON-NLS-1$
	}

	public String getText() {
		if (getJavaClass() != null)
			return getJavaClass().getName();
		return ""; //$NON-NLS-1$
	}

	public abstract String getTypeString(String className);

	public void openInEditor() {
		IProject project = ProjectUtilities.getProject(getJavaClass());
		try {
			J2EEEditorUtility.openInEditor(getJavaClass(), project);
		} catch (Exception cantOpen) {
			//Ignore
		}
	}

	/**
	 * Insert the method's description here. Creation date: (7/11/2001 1:47:24 PM)
	 * 
	 * @param newEjb
	 *            org.eclipse.jst.j2ee.internal.internal.ejb.EnterpriseBean
	 */
	public void setEjb(org.eclipse.jst.j2ee.ejb.EnterpriseBean newEjb) {
		ejb = newEjb;
	}

	/**
	 * @see IAdaptable#EcoreUtil.getAdapter(eAdapters(),Class)
	 */
	public Object getAdapter(Class adapter) {
		if (adapter == IRESOURCE_CLASS)
			return J2EEEditorUtility.getFile(getJavaClass());
		if (adapter == IPROJECT_CLASS)
			return getProject();
		return null;
	}

}