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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.editor.view.descriptive.handler;
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import java.util.ArrayList;
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import java.util.List;
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import org.eclipse.core.commands.AbstractHandler;
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import org.eclipse.core.commands.ExecutionEvent;
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import org.eclipse.core.commands.ExecutionException;
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import org.eclipse.core.commands.common.NotDefinedException;
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import org.eclipse.core.commands.operations.IUndoContext;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.jface.viewers.TreePath;
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import org.eclipse.jface.viewers.TreeSelection;
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import org.eclipse.ui.IWorkbenchPart;
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import org.eclipse.ui.handlers.HandlerUtil;
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import eu.etaxonomy.cdm.model.description.DescriptionBase;
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import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
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import eu.etaxonomy.cdm.model.description.SpecimenDescription;
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import eu.etaxonomy.cdm.model.description.TaxonDescription;
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import eu.etaxonomy.cdm.model.media.Media;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteDescriptionElementOperation;
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import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteSpecimenDescriptionOperation;
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import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteTaxonDescriptionOperation;
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import eu.etaxonomy.taxeditor.editor.view.media.operation.DeleteMediaOperation;
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import eu.etaxonomy.taxeditor.model.AbstractUtility;
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import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
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import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
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import eu.etaxonomy.taxeditor.session.ICdmEntitySessionEnabled;
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/**
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* <p>DeleteDescriptionHandler class.</p>
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*
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* @author n.hoffmann
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* @created Jun 22, 2010
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* @version 1.0
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*/
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public class DeleteHandler extends AbstractHandler {
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/* (non-Javadoc)
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* @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
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*/
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/** {@inheritDoc} */
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@Override
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public Object execute(ExecutionEvent event) throws ExecutionException {
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IStructuredSelection selection = (IStructuredSelection) HandlerUtil.getActiveSite(event).getSelectionProvider().getSelection();
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IWorkbenchPart part = HandlerUtil.getActivePart(event);
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IPostOperationEnabled postOperationEnabled = (part instanceof IPostOperationEnabled) ? (IPostOperationEnabled) part : null;
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ICdmEntitySessionEnabled cdmEntitySessionEnabled = (part instanceof ICdmEntitySessionEnabled) ? (ICdmEntitySessionEnabled) part : null;
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try {
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String label = event.getCommand().getName();
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IUndoContext undoContext = EditorUtil.getUndoContext();
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List<AbstractPostOperation<?>> operations = new ArrayList<AbstractPostOperation<?>>();
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for(Object object : selection.toArray()){
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// TaxonDescription
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if(object instanceof TaxonDescription){
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operations.add(new DeleteTaxonDescriptionOperation(label, undoContext, (TaxonDescription) object, postOperationEnabled, cdmEntitySessionEnabled));
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}
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else if(object instanceof SpecimenDescription){
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operations.add(new DeleteSpecimenDescriptionOperation(label, undoContext, (SpecimenDescription) object, postOperationEnabled, cdmEntitySessionEnabled)) ;
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}
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// DescriptionElementBase
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else if(object instanceof DescriptionElementBase){
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operations.add(new DeleteDescriptionElementOperation(label, undoContext, (DescriptionElementBase) object, postOperationEnabled, cdmEntitySessionEnabled));
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}
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else if(object instanceof FeatureNodeContainer){
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List<DescriptionElementBase> descriptions = ((FeatureNodeContainer) object).getDescriptionElementsForEntireBranch();
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for(DescriptionElementBase description : descriptions){
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operations.add(new DeleteDescriptionElementOperation(label, undoContext, description, postOperationEnabled, cdmEntitySessionEnabled));
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}
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}
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// Media
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else if(object instanceof Media){
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TreeSelection treeSelection = (TreeSelection) selection;
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TreePath[] path = treeSelection.getPathsFor(object);
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DescriptionBase<?> imageGallery = (DescriptionBase<?>) path[0].getFirstSegment();
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operations.add(new DeleteMediaOperation(label, undoContext, imageGallery, (Media) object, postOperationEnabled));
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}
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else{
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MessagingUtils.error(getClass(), "Selection is not valid for this delete handler", null);
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}
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}
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// execute all cumulated operations
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for(AbstractPostOperation<?> operation : operations){
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AbstractUtility.executeOperation(operation);
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}
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} catch (NotDefinedException e) {
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MessagingUtils.warn(getClass(), "Command name not set.");
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}
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return null;
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}
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}
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