/**
* 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.MetsPackage;
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.emf.common.command.Command;
import org.eclipse.emf.edit.command.SetCommand;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.ui.commands.IElementUpdater;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.handlers.RadioState;
import org.eclipse.ui.menus.UIElement;
import unc.lib.cdr.workbench.project.MetsProjectNature;
public class SetDivTypeHandler extends AbstractHandler implements IElementUpdater {
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
if (HandlerUtil.matchesRadioState(event))
return null; // we are already in the updated state - do nothing
String currentState = event.getParameter(RadioState.PARAMETER_ID);
// perform task for current state
IStructuredSelection select = (IStructuredSelection) HandlerUtil
.getCurrentSelectionChecked(event);
for (Object o : select.toList()) {
if (o instanceof DivType) {
DivType d = (DivType) o;
try {
EditingDomain ed = MetsProjectNature.getEditingDomain(d);
Command cmd = SetCommand.create(ed, d,
MetsPackage.eINSTANCE.getDivType_TYPE(),
currentState);
ed.getCommandStack().execute(cmd);
} catch (NullPointerException e) {
e.printStackTrace();
}
}
}
// and finally update the current state
HandlerUtil.updateRadioState(event.getCommand(), currentState);
return null;
}
@Override
public void updateElement(UIElement element, Map parameters) {
String state = (String)parameters.get("org.eclipse.ui.commands.radioStateParameter");
IWorkbenchPartSite site = (IWorkbenchPartSite)parameters.get("org.eclipse.ui.part.IWorkbenchPartSite");
if(site.getId().equals("cdr-workbench.projectview")) {
IStructuredSelection s = (IStructuredSelection)site.getSelectionProvider().getSelection();
if(s.getFirstElement() instanceof DivType) {
DivType div = (DivType)s.getFirstElement();
element.setChecked(div.getTYPE() != null && div.getTYPE().equals(state));
}
}
}
}