/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *         http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.argeo.slc.client.ui.commands;
  
  import javax.jcr.Node;
  import javax.jcr.Property;
  import javax.jcr.RepositoryException;
  import javax.jcr.Session;
  
  import org.argeo.eclipse.ui.dialogs.SingleValue;
  import org.argeo.jcr.JcrUtils;
  import org.argeo.slc.SlcException;
  import org.argeo.slc.client.ui.ClientUiPlugin;
  import org.argeo.slc.client.ui.model.SingleResultNode;
  import org.eclipse.core.commands.AbstractHandler;
  import org.eclipse.core.commands.ExecutionEvent;
  import org.eclipse.core.commands.ExecutionException;
  import org.eclipse.jface.dialogs.MessageDialog;
  import org.eclipse.jface.resource.ImageDescriptor;
  import org.eclipse.jface.viewers.IStructuredSelection;
  import org.eclipse.swt.widgets.Display;
  import org.eclipse.ui.handlers.HandlerUtil;
  
  /**
   * Rename a node of type SlcType.SLC_RESULT_FOLDER by moving it.
   */
  
  public class RenameResultNode extends AbstractHandler {
  	public final static String ID = ClientUiPlugin.ID + ".renameResultNode";
  	public final static ImageDescriptor DEFAULT_IMG_DESCRIPTOR = ClientUiPlugin
  			.getImageDescriptor("icons/rename.png");
  	public final static String DEFAULT_LABEL = "Rename result";
  
  	public Object execute(ExecutionEvent event) throws ExecutionException {
  		IStructuredSelection selection = (IStructuredSelection) HandlerUtil
  				.getActiveWorkbenchWindow(event).getActivePage().getSelection();
  
  		// Sanity check, already done when populating the corresponding popup
  		// menu.
  		if (selection != null && selection.size() == 1) {
  			Object obj = selection.getFirstElement();
  			try {
  				if (obj instanceof SingleResultNode) {
  					SingleResultNode rf = (SingleResultNode) obj;
  					Node sourceNode = rf.getNode();
  					String folderName = SingleValue.ask("Rename result",
  							"Enter a new result name");
  					if (folderName != null) {
  
  						if (sourceNode.getParent().hasNode(folderName)) {
  							MessageDialog
  									.openError(Display.getDefault()
  											.getActiveShell(), "Error",
  											"Another object with the same name already exists.");
  							return null;
  						}
  
  						String sourcePath = sourceNode.getPath();
  						String targetPath = JcrUtils.parentPath(sourcePath)
  								+ "/" + folderName;
  						Session session = sourceNode.getSession();
  						session.move(sourcePath, targetPath);
  						session.getNode(targetPath).setProperty(
  								Property.JCR_TITLE, folderName);
  						session.save();
  					}
  				}
  			} catch (RepositoryException e) {
  				throw new SlcException(
  						"Unexpected exception while refactoring result folder",
  						e);
  			}
  		}
  		return null;
  	}
  }