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package eu.etaxonomy.taxeditor.editor.handler;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Set;
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import java.util.UUID;
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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.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.ui.PartInitException;
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import org.eclipse.ui.handlers.HandlerUtil;
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import eu.etaxonomy.cdm.model.description.IndividualsAssociation;
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import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationBase;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.editor.view.derivate.DerivateViewEditorInput;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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public class OpenDerivateViewHandler extends AbstractHandler {
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@Override
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public Object execute(ExecutionEvent event) throws ExecutionException {
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Set<UUID> selectedElementUUIDs = new HashSet<UUID>();
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Object parameter = null;
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//check if parameter is set
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if(event.getParameter("eu.etaxonomy.taxeditor.specimenUuidParameter")!=null){
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parameter = event.getObjectParameterForExecution("eu.etaxonomy.taxeditor.specimenUuidParameter");
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}
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if(parameter instanceof UUID){
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selectedElementUUIDs.add((UUID) parameter);
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}
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else{
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//if not, try with current selection
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ISelection currentSelection = HandlerUtil.getCurrentSelection(event);
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if(currentSelection instanceof IStructuredSelection){
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Iterator<?> selectionIterator = ((IStructuredSelection) currentSelection).iterator();
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while(selectionIterator.hasNext()){
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Object object = selectionIterator.next();
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if(object instanceof SpecimenOrObservationBase<?>){
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selectedElementUUIDs.add(((SpecimenOrObservationBase<?>) object).getUuid());
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}
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else if(object instanceof IndividualsAssociation){
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SpecimenOrObservationBase specimen = ((IndividualsAssociation) object).getAssociatedSpecimenOrObservation();
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if(specimen!=null){
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selectedElementUUIDs.add(specimen.getUuid());
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}
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}
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}
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}
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}
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DerivateViewEditorInput input = new DerivateViewEditorInput(selectedElementUUIDs);
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try {
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EditorUtil.open(input);
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} catch (PartInitException e) {
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MessagingUtils.error(OpenDerivateViewHandler.class, "Could not open Derivative Editor", e);
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} catch (NullPointerException npe){
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MessagingUtils.messageDialog("Failed to open Editor", OpenDerivateViewHandler.class, "Could not open Derivative Editor. The derivate hierarchy is corrupted!", npe);
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}
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return null;
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}
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}
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