/*******************************************************************************
 * Copyright (c) 2008 SAP AG 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:
 * Kaloyan Raev, kaloyan.raev@sap.com - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.j2ee.internal.web.operations;

import java.lang.reflect.InvocationTargetException;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jem.util.UIContextDetermination;
import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
import org.eclipse.jst.j2ee.internal.common.operations.INewJavaClassDataModelProperties;
import org.eclipse.jst.j2ee.internal.web.plugin.WebPlugin;
import org.eclipse.jst.j2ee.model.IModelProvider;
import org.eclipse.swt.widgets.Display;
import org.eclipse.wst.common.componentcore.internal.operation.IArtifactEditOperationDataModelProperties;
import org.eclipse.wst.common.frameworks.datamodel.AbstractDataModelOperation;
import org.eclipse.wst.common.frameworks.datamodel.IDataModel;

public abstract class AddWebClassOperation extends AbstractDataModelOperation implements
		IArtifactEditOperationDataModelProperties,
		INewJavaClassDataModelProperties {
	
	protected IModelProvider provider = null;
	
	public AddWebClassOperation(IDataModel dataModel) {
		super(dataModel);
	}

	@Override
	public IStatus execute(final IProgressMonitor monitor, final IAdaptable info) throws ExecutionException {
		Runnable runnable = null;
		Object ctx = null;
		if (UIContextDetermination.getCurrentContext() == UIContextDetermination.UI_CONTEXT) {
			Display display = Display.getCurrent();
			if (display != null)
				ctx = display.getActiveShell();
		}

		if (provider.validateEdit(null, ctx).isOK()) {
			runnable = new Runnable(){
				public void run() {
					try {
						doExecute(monitor, info);
					} catch (ExecutionException e) {
						WebPlugin.log(e);
					}
				}
			};
			provider.modify(runnable, IModelProvider.FORCESAVE);
		}
		//return doExecute(monitor, info);
		return Status.CANCEL_STATUS;
	}
	
	/**
	 * Subclasses should implement this method to add their own actions during
	 * execution. The implementation of the execute method drives the running of
	 * the operation. 
	 * 
	 * @see org.eclipse.core.commands.operations.AbstractOperation#execute(org.eclipse.core.runtime.IProgressMonitor,
	 *      org.eclipse.core.runtime.IAdaptable)
	 * @see AddListenerOperation#createListenerClass()
	 * @see AddListenerOperation#generateListenerMetaData(IDataModel, String)
	 * 
	 * @param monitor
	 *            IProgressMonitor
	 * @param info
	 *            IAdaptable
	 *            
	 * @throws CoreException
	 * @throws InterruptedException
	 * @throws InvocationTargetException
	 */
	public abstract IStatus doExecute(IProgressMonitor monitor, IAdaptable info) throws ExecutionException;
	
	public IProject getTargetProject() {
		String projectName = model.getStringProperty(PROJECT_NAME);
		return ProjectUtilities.getProject(projectName);
	}
	
	/**
	 * This method will return the qualified java class name as specified by the
	 * class name and package name properties in the data model. This method
	 * should not return null.
	 * 
	 * @see INewJavaClassDataModelProperties#CLASS_NAME
	 * @see INewJavaClassDataModelProperties#JAVA_PACKAGE
	 * 
	 * @return String qualified java class name
	 */
	public final String getQualifiedClassName() {
		// Use the java package name and unqualified class name to create a
		// qualified java class name
		String packageName = model.getStringProperty(JAVA_PACKAGE);
		String className = model.getStringProperty(CLASS_NAME);
		
		// Ensure the class is not in the default package before adding package
		// name to qualified name
		if (packageName != null && packageName.trim().length() > 0)
			return packageName + "." + className; //$NON-NLS-1$
		
		return className;
	}

}