/*******************************************************************************
* Copyright 2013 Geoscience Australia
*
* 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 au.gov.ga.earthsci.catalog.ui.handler;
import java.net.URL;
import javax.inject.Inject;
import javax.inject.Named;
import org.eclipse.e4.core.di.annotations.CanExecute;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.e4.ui.workbench.modeling.EPartService;
import org.eclipse.e4.ui.workbench.modeling.EPartService.PartState;
import au.gov.ga.earthsci.application.parts.info.InfoPart;
import au.gov.ga.earthsci.catalog.ICatalogTreeNode;
/**
* Handler used to show the information related to a catalog tree node.
*
* @author Michael de Hoog (michael.dehoog@ga.gov.au)
*/
public class InformationHandler
{
@Inject
private EPartService partService;
@Execute
public void execute(@Named(IServiceConstants.ACTIVE_SELECTION) ICatalogTreeNode[] nodes)
{
MPart part = partService.showPart(InfoPart.PART_ID, PartState.VISIBLE);
part.getContext().modify(InfoPart.INPUT_NAME, nodes[0]);
part.getContext().declareModifiable(InfoPart.INPUT_NAME);
}
@CanExecute
public boolean canExecute(@Optional @Named(IServiceConstants.ACTIVE_SELECTION) ICatalogTreeNode[] nodes)
{
if (nodes == null || nodes.length != 1)
{
return false;
}
ICatalogTreeNode node = nodes[0];
URL infoURL = node.getInformationURL();
return infoURL != null;
}
}