EditAccessControlsCommand.java

/**
 * 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.acl;

import edu.unc.lib.schemas.acl.AccessControlType;
import edu.unc.lib.schemas.acl.AclFactory;
import edu.unc.lib.schemas.acl.AclPackage;
import gov.loc.mets.AmdSecType;
import gov.loc.mets.DivType;
import gov.loc.mets.MDTYPEType;
import gov.loc.mets.MdSecType;
import gov.loc.mets.MdWrapType;
import gov.loc.mets.MetsFactory;
import gov.loc.mets.MetsPackage;
import gov.loc.mets.XmlDataType1;
import gov.loc.mets.util.METSConstants;
import gov.loc.mets.util.METSUtils;
import gov.loc.mods.mods.presentation.URIFragmentEditorInput;

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.runtime.CoreException;
import org.eclipse.emf.ecore.xml.type.internal.XMLCalendar;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.handlers.HandlerUtil;

import unc.lib.cdr.workbench.project.MetsProjectNature;
import unc.lib.cdr.workbench.views.MetsProjectNavigator;

public class EditAccessControlsCommand extends AbstractHandler implements IHandler {

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event);
		IWorkbenchPage page = window.getActivePage();
		IViewPart view = page.findView(MetsProjectNavigator.ID);
		// Get the selection
		ISelection selection = view.getSite().getSelectionProvider().getSelection();
		if (selection != null && selection instanceof IStructuredSelection) {
			IStructuredSelection s = (IStructuredSelection) selection;

			DivType d = (DivType) s.getFirstElement();
			MetsProjectNature n = MetsProjectNature.getNatureForMetsObject(d);

			MdSecType rightsSec = null;
			for (MdSecType md : d.getMdSec()) {
				if (METSConstants.MD_STATUS_USER_EDITED.equals(md.getSTATUS())) {
					if (MetsPackage.eINSTANCE.getAmdSecType_RightsMD().equals(md.eContainingFeature())) {
						rightsSec = md;
						break;
					}
				}
			}

			if (rightsSec == null) {
				AmdSecType amdSec = MetsFactory.eINSTANCE.createAmdSecType();
				n.getMets().getAmdSec().add(amdSec);

				rightsSec = MetsFactory.eINSTANCE.createMdSecType();
				rightsSec.setSTATUS(METSConstants.MD_STATUS_USER_EDITED);
				rightsSec.setCREATED(new XMLCalendar(new java.util.Date(System.currentTimeMillis()), XMLCalendar.DATETIME));
				rightsSec.setID(METSUtils.makeXMLUUID());
				amdSec.getRightsMD().add(rightsSec);
				// link div to rightsMD
				d.getMdSec().add(rightsSec);
			}

			AccessControlType acl = null;
			try {
				Object o = rightsSec.getMdWrap().getXmlData().getAny().getValue(0);
				if (o != null && o instanceof AccessControlType) {
					acl = (AccessControlType) o;
				}
			} catch (NullPointerException e) {
				// e.printStackTrace();
			}

			if (acl == null) {
				XmlDataType1 xml = MetsFactory.eINSTANCE.createXmlDataType1();
				acl = AclFactory.eINSTANCE.createAccessControlType();
				// acl.setID(METSUtils.makeXMLUUID());
				xml.getAny().add(AclPackage.eINSTANCE.getDocumentRoot_AccessControl(), acl);
				MdWrapType wrap = MetsFactory.eINSTANCE.createMdWrapType();
				wrap.setMDTYPE(MDTYPEType.OTHER);
				wrap.setXmlData(xml);
				rightsSec.setMdWrap(wrap);
			}
			try {
				n.save();
			} catch (CoreException e) {
				throw new ExecutionException("There were unexpected problems opening the MODS Editor", e);
			}
			String uriFrag = acl.eResource().getURIFragment(acl);
			URIFragmentEditorInput input = new URIFragmentEditorInput(n.getProject().getName(), uriFrag,
					"Access Controls for '" + d.getLABEL1() + "'", acl);
			try {
				page.openEditor(input, "workbench_plugin.accessControlEditor");
			} catch (PartInitException e) {
				throw new ExecutionException("There were unexpected problems opening the ACL Editor", e);
			}
		}
		return null;
	}

}