/**
* Copyright 2010 The University of North Carolina at Chapel Hill
*
* 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 unc.lib.cdr.workbench.commands;
import gov.loc.mets.DivType;
import gov.loc.mets.MdSecType;
import gov.loc.mets.MetsPackage;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.core.resources.IProject;
import org.eclipse.emf.common.command.CompoundCommand;
import org.eclipse.emf.edit.command.RemoveCommand;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.handlers.HandlerUtil;
import unc.lib.cdr.workbench.project.MetsProjectNature;
public class DeleteDescriptionsCommand extends AbstractHandler implements IHandler {
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
IStructuredSelection s = (IStructuredSelection) HandlerUtil.getCurrentSelectionChecked(event);
boolean confirmed = MessageDialog.openConfirm(HandlerUtil.getActiveShell(event), "Confirm Delete",
"Please confirm that you wish to delete descriptions.");
if(!confirmed) return null;
Map<IProject, CompoundCommand> deletesByProject = new HashMap<IProject, CompoundCommand>();
for (@SuppressWarnings("rawtypes")
Iterator iter = s.iterator(); iter.hasNext();) {
Object o = iter.next();
if (DivType.class.isInstance(o)) {
DivType div = (DivType) o;
for (MdSecType md : div.getDmdSec()) {
IProject p = MetsProjectNature.getProjectForMetsEObject(md);
EditingDomain ed = MetsProjectNature.get(p).getEditingDomain();
if (!deletesByProject.containsKey(p)) {
deletesByProject.put(p, new CompoundCommand("Delete of MODS Descriptions"));
}
deletesByProject.get(p).append(RemoveCommand.create(ed, div,
MetsPackage.eINSTANCE.getDivType_DmdSec(), md));
deletesByProject.get(p).append(RemoveCommand.create(ed, md));
}
}
}
for(IProject p : deletesByProject.keySet()) {
CompoundCommand delete = deletesByProject.get(p);
if (delete.canExecute()) {
MetsProjectNature.get(p).getCommandStack().execute(delete);
}
}
return null;
}
}