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package eu.etaxonomy.taxeditor.editor.view.derivate;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.Set;
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import org.eclipse.jface.viewers.ITreeContentProvider;
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import org.eclipse.jface.viewers.Viewer;
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import eu.etaxonomy.cdm.model.occurrence.DerivationEvent;
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import eu.etaxonomy.cdm.model.occurrence.DerivedUnit;
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import eu.etaxonomy.cdm.model.occurrence.FieldUnit;
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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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public class DerivateContentProvider implements ITreeContentProvider {
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@Override
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public void dispose() {
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// TODO Auto-generated method stub
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}
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@Override
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public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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}
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@Override
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public Object[] getElements(Object inputElement) {
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SpecimenOrObservationBase<?> specimen = null;
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if(inputElement instanceof DerivateViewEditorInput){
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inputElement = ((DerivateViewEditorInput) inputElement).getDerivate();
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}
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// return the parent FieldUnit if element is a DerivedUnit
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if(inputElement instanceof DerivedUnit){
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specimen = EditorUtil.getFieldUnit((DerivedUnit)inputElement);
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}
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else if(inputElement instanceof FieldUnit){
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specimen = (FieldUnit) inputElement;
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}
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if(specimen!=null){
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return Collections.singleton(specimen).toArray();
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}
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else {
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return Collections.EMPTY_LIST.toArray();
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}
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}
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@Override
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public Object[] getChildren(Object parentElement) {
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if(parentElement instanceof DerivateViewEditorInput){
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parentElement = ((DerivateViewEditorInput) parentElement).getDerivate();
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}
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if(parentElement instanceof SpecimenOrObservationBase){
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return getDerivates((SpecimenOrObservationBase) parentElement).toArray();
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}
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return null;
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}
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@Override
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public Object getParent(Object element) {
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if(element instanceof DerivateViewEditorInput){
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element = ((DerivateViewEditorInput) element).getDerivate();
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}
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if(element instanceof FieldUnit){
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return element;
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}
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else if(element instanceof DerivedUnit){
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DerivedUnit derivedUnit = (DerivedUnit)element;
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return derivedUnit.getOriginalUnit();
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}
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return null;
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}
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@Override
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public boolean hasChildren(Object element) {
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if(element instanceof DerivateViewEditorInput){
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element = ((DerivateViewEditorInput) element).getDerivate();
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}
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if(element instanceof SpecimenOrObservationBase){
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SpecimenOrObservationBase specimenOrObservation = (SpecimenOrObservationBase)element;
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for(DerivationEvent event:(Set<DerivationEvent>)specimenOrObservation.getDerivationEvents()){
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if(!event.getDerivatives().isEmpty()){
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return true;
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}
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}
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}
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return false;
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}
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private List<DerivedUnit> getDerivates(SpecimenOrObservationBase specimenOrObservation){
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List<DerivedUnit> derivates = new ArrayList<DerivedUnit>();
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for(DerivationEvent derivationEvent:(Set<DerivationEvent>)specimenOrObservation.getDerivationEvents()){
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derivates.addAll(derivationEvent.getDerivatives());
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}
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return derivates;
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}
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}
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