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// $Id$
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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 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.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.swt.widgets.Event;
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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.Feature;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.CreateDescriptionElementOperation;
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import eu.etaxonomy.taxeditor.model.AbstractUtility;
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import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
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import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
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/**
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* <p>CreateDescriptionElementHandler class.</p>
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*
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* @author n.hoffmann
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* @created 16.04.2009
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* @version 1.0
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*/
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public class CreateDescriptionElementHandler extends AbstractHandler {
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/*
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* (non-Javadoc)
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*
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* @see
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* org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
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* 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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IWorkbenchPart part = HandlerUtil.getActivePart(event);
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IPostOperationEnabled postOperationEnabled = (part instanceof IPostOperationEnabled) ? (IPostOperationEnabled) part
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: null;
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DescriptionBase<?> description = null;
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ISelection selection = HandlerUtil.getCurrentSelection(event);
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if (selection instanceof IStructuredSelection) {
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Object selectedElement = ((IStructuredSelection) selection).getFirstElement();
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if (selectedElement instanceof DescriptionBase<?>) {
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description = (DescriptionBase<?>) selectedElement;
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}
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}
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if (description != null) {
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AbstractPostOperation operation = null;
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try {
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// TODO use undo context specific to editor
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operation = operationCreationInstance(event.getCommand().getName(), event, description, postOperationEnabled);
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AbstractUtility.executeOperation(operation);
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} catch (NotDefinedException e) {
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AbstractUtility.warn(getClass(), "Command name not set");
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}
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} else {
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AbstractUtility.error(getClass(), new IllegalArgumentException("Could not determine the taxon description"));
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return null;
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}
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return null;
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}
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/**
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* Added to make the Class more generic and limit the amount of code changes required
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* @param label
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* @param event
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* @param taxon
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* @param description
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* @param postOperationEnabled
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* @return
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*/
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protected AbstractPostOperation operationCreationInstance(String label, ExecutionEvent event, DescriptionBase<?> description, IPostOperationEnabled postOperationEnabled) {
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Feature feature = (Feature) ((Event) event.getTrigger()).data;
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return new CreateDescriptionElementOperation(label, EditorUtil.getUndoContext(), description, feature, postOperationEnabled);
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}
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}
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