/*
    * 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.dist.commands;
  
  import java.util.Iterator;
  
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.argeo.slc.SlcException;
  import org.argeo.slc.SlcTypes;
  import org.argeo.slc.client.ui.dist.DistPlugin;
  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.ISelection;
  import org.eclipse.jface.viewers.IStructuredSelection;
  import org.eclipse.ui.IEditorPart;
  import org.eclipse.ui.IWorkbenchPart;
  import org.eclipse.ui.handlers.HandlerUtil;
  
  /** Delete chosen artifacts from the current workspace */
  public class DeleteArtifacts extends AbstractHandler {
  	// private static final Log log = LogFactory.getLog(DeleteWorkspace.class);
  
  	public final static String ID = DistPlugin.PLUGIN_ID + ".deleteArtifacts";
  	public final static String DEFAULT_LABEL = "Delete selected items";
  	public final static ImageDescriptor DEFAULT_ICON = DistPlugin
  			.getImageDescriptor("icons/removeItem.gif");
  
  	public Object execute(ExecutionEvent event) throws ExecutionException {
  		try {
  			IWorkbenchPart activePart = HandlerUtil.getActivePart(event);
  
  			if (activePart instanceof IEditorPart) {
  				ISelection selector = ((IEditorPart) activePart)
  						.getEditorSite().getSelectionProvider().getSelection();
  				if (selector != null
  						&& selector instanceof IStructuredSelection) {
  					Iterator<?> it = ((IStructuredSelection) selector)
  							.iterator();
  
  					String msg = "Your are about to definitively remove the "
  							+ ((IStructuredSelection) selector).size()
  							+ " selected artifacts.\n"
  							+ "Are you sure you want to proceed?";
  
  					boolean result = MessageDialog.openConfirm(DistPlugin
  							.getDefault().getWorkbench().getDisplay()
  							.getActiveShell(), "Confirm Deletion", msg);
  
  					if (result) {
  						while (it.hasNext()) {
  							Node node = (Node) it.next();
  							if (node.isNodeType(SlcTypes.SLC_ARTIFACT)) {
  								// we remove the artifactVersion, that is the
  								// parent
  								node.getParent().remove();
  								node.getSession().save();
  							}
  						}
  					}
  				}
  			}
  			// CommandHelpers.callCommand(RefreshDistributionOverviewPage.ID);
  		} catch (RepositoryException re) {
  			throw new SlcException(
  					"Unexpected error while deleting artifacts.", re);
  		}
  		return null;
  	}
  }