/*******************************************************************************
 * Copyright (c) 2003, 2006 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.provider;


import java.io.File;
import java.net.URL;

import org.eclipse.core.resources.IFile;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jst.j2ee.common.CommonPackage;
import org.eclipse.jst.j2ee.common.internal.util.CommonUtil;
import org.eclipse.jst.j2ee.ejb.internal.impl.EjbFactoryImpl;
import org.eclipse.jst.j2ee.internal.ejb.provider.AbstractMethodsContentProvider;
import org.eclipse.jst.j2ee.internal.ejb.provider.J2EEJavaClassProviderHelper;
import org.eclipse.jst.j2ee.internal.plugin.J2EEPlugin;
import org.eclipse.jst.j2ee.internal.plugin.J2EEUIMessages;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.model.WorkbenchLabelProvider;

/**
 * Insert the type's description here. Creation date: (6/20/2001 10:40:41 PM)
 * 
 * @author: Administrator
 */
public class J2EEAdapterFactoryLabelProvider extends AdapterFactoryLabelProvider {
	// //$NON-NLS-1$
	protected static final Class IItemLabelProviderClass = IItemLabelProvider.class;
	private static final EStructuralFeature ROLE_NAME_SF = CommonPackage.eINSTANCE.getSecurityRole_RoleName();
	private static final EStructuralFeature ROLES_SF = EjbFactoryImpl.getPackage().getMethodPermission_Roles();


	/**
	 * This is used for delegation to get labels for server objects, which don't fit into EMF edit
	 */
	protected WorkbenchLabelProvider wbLabelProvider;

	public J2EEAdapterFactoryLabelProvider(org.eclipse.emf.common.notify.AdapterFactory adapterFactory) {
		super(adapterFactory);
		wbLabelProvider = new WorkbenchLabelProvider();
	}

	public Image getImage(Object object) {
		if (object instanceof J2EEJavaClassProviderHelper)
			return ((J2EEJavaClassProviderHelper) object).getImage();
		else if (isEMFEditObject(object))
			return super.getImage(object);
		else if (object instanceof AbstractMethodsContentProvider.EJBMethodItem)
			return super.getImage(((AbstractMethodsContentProvider.EJBMethodItem) object).ejb);
		else if (object instanceof File) {
			URL url = (URL) J2EEPlugin.getPlugin().getImage("jar_obj"); //$NON-NLS-1$
			return ImageDescriptor.createFromURL(url).createImage();
		}
		return wbLabelProvider.getImage(object);
	}

	public String getText(Object object) {

		if (object instanceof J2EEJavaClassProviderHelper)
			return ((J2EEJavaClassProviderHelper) object).getText();
		else if (isEMFEditObject(object)) {
			if (CommonUtil.isDeploymentDescriptorRoot(object))
				return J2EEUIMessages.getResourceString("Deployment_Descriptor_UI_") + ": " + super.getText(object); //$NON-NLS-1$ //$NON-NLS-2$ 
			return super.getText(object);
		} else if (object instanceof AbstractMethodsContentProvider.EJBMethodItem)
			return super.getText(((AbstractMethodsContentProvider.EJBMethodItem) object).ejb);
		else if (object instanceof IFile) {
			return ((IFile) object).getName();
		} else if (object instanceof File) {
			return ((File)object).getName();
		}
		return wbLabelProvider.getText(object);
	}

	protected boolean isEMFEditObject(Object object) {
		IItemLabelProvider itemLabelProvider = (IItemLabelProvider) adapterFactory.adapt(object, IItemLabelProviderClass);
		return itemLabelProvider != null;
	}

	/*
	 * @see INotifyChangedListener#notifyChanged(new ENotificationImpl((InternalEObject)Object,
	 *      int,(EStructuralFeature) Object, Object, Object, int))
	 */
	public void notifyChanged(Notification notification) {
		Object feature = notification.getFeature();
		if (feature == ROLE_NAME_SF || feature == ROLES_SF)
			fireLabelProviderChanged();
	}
}