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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.name.handler;
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import org.apache.log4j.Logger;
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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.IHandler;
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import org.eclipse.core.commands.common.NotDefinedException;
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import eu.etaxonomy.cdm.model.taxon.Synonym;
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import eu.etaxonomy.cdm.model.taxon.Taxon;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.editor.Page;
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import eu.etaxonomy.taxeditor.editor.name.TaxonNameEditor;
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import eu.etaxonomy.taxeditor.operations.AbstractPostOperation;
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import eu.etaxonomy.taxeditor.operations.DeleteConceptRelationOperation;
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import eu.etaxonomy.taxeditor.operations.DeleteMisapplicationOperation;
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import eu.etaxonomy.taxeditor.operations.DeleteSynonymOperation;
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/**
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 * <p>DeleteTaxonBaseHandler class.</p>
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 *
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 * @author n.hoffmann
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 * @created 21.04.2009
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 * @version 1.0
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 */
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public class DeleteTaxonBaseHandler extends AbstractHandler implements IHandler {
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	private static final Logger logger = Logger
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								.getLogger(DeleteTaxonBaseHandler.class);
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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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	public Object execute(ExecutionEvent event) throws ExecutionException {
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		TaxonNameEditor editor = (TaxonNameEditor) EditorUtil.getActiveEditorPage(Page.NAME);
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		Object selectedElement = EditorUtil.getSelection(event).getFirstElement();
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		AbstractPostOperation operation = null;
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		String commandName = null;
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		try {
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			commandName = event.getCommand().getName();
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		} catch (NotDefinedException e) {
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			logger.error(e);
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			throw new RuntimeException(e);
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		}
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		// synonym
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		if(selectedElement instanceof Synonym){
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			operation = new DeleteSynonymOperation(commandName, editor.getUndoContext(), editor.getTaxon(), (Synonym) selectedElement, editor);
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		}
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		// misapplication
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		else if(selectedElement instanceof Taxon && ((Taxon) selectedElement).isMisappliedName()){
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			operation = new DeleteMisapplicationOperation(commandName, editor.getUndoContext(), editor
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					.getTaxon(), (Taxon) selectedElement, editor);
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		}
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		// concept relation
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		else if(selectedElement instanceof Taxon && ((Taxon) selectedElement).isRelatedConcept()){
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			operation = new DeleteConceptRelationOperation(commandName, editor.getUndoContext(), editor.getTaxon(), (Taxon) selectedElement, editor);
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		}
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		else {
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			throw new IllegalArgumentException("Element has to be Synonym, Misapplication or Concept");
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		}
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		EditorUtil.executeOperation(operation);
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		return null;
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	}
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}
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