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package eu.etaxonomy.taxeditor.editor.view.derivate.handler;
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import javax.inject.Named;
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import org.eclipse.e4.core.di.annotations.CanExecute;
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import org.eclipse.e4.core.di.annotations.Execute;
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import org.eclipse.e4.ui.model.application.ui.basic.MPart;
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import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
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import org.eclipse.e4.ui.services.IServiceConstants;
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import eu.etaxonomy.cdm.api.service.IOccurrenceService;
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import eu.etaxonomy.cdm.api.service.ITaxonService;
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import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.model.description.IndividualsAssociation;
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import eu.etaxonomy.cdm.model.description.TaxonDescription;
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import eu.etaxonomy.cdm.model.occurrence.FieldUnit;
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import eu.etaxonomy.cdm.model.taxon.Taxon;
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import eu.etaxonomy.taxeditor.editor.AppModelId;
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import eu.etaxonomy.taxeditor.editor.l10n.Messages;
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import eu.etaxonomy.taxeditor.editor.view.derivate.DerivateView;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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public class CreateFieldUnitHandler {
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@Execute
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public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart part, MHandledMenuItem item) {
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DerivateView derivateView = (DerivateView) part.getObject();
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if(item.getElementId().equals(AppModelId.HANDLEDMENUITEM_EU_ETAXONOMY_TAXEDITOR_EDITOR_HANDLEDMENUITEM_CREATE_FIELD_UNIT_FOR_TAXON)){
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Object selectionInput = derivateView.getSelectionInput();
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if(selectionInput instanceof CdmBase && ((CdmBase) selectionInput).isInstanceOf(Taxon.class)){
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final Taxon taxon = HibernateProxyHelper.deproxy(CdmStore.getService(ITaxonService.class).load(((CdmBase)selectionInput).getUuid()), Taxon.class);
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if(derivateView.isDirty()){
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MessagingUtils.warningDialog(DerivateView.VIEW_HAS_UNSAVED_CHANGES, this, DerivateView.YOU_NEED_TO_SAVE_BEFORE_PERFORMING_THIS_ACTION);
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return;
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}
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FieldUnit fieldUnit = FieldUnit.NewInstance();
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fieldUnit = CdmBase.deproxy(CdmStore.getService(IOccurrenceService.class).save(fieldUnit), FieldUnit.class);
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IndividualsAssociation association = IndividualsAssociation.NewInstance(fieldUnit);
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TaxonDescription description;
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if(!taxon.getDescriptions().isEmpty()){
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description = taxon.getDescriptions().iterator().next();
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}
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else{
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description = TaxonDescription.NewInstance(taxon);
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}
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description.addElement(association);
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CdmStore.getService(ITaxonService.class).merge(taxon);
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derivateView.getConversationHolder().commit();
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derivateView.addFieldUnit(fieldUnit);
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derivateView.refreshTree(fieldUnit);
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}
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}
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else{
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if(derivateView.isDirty()){
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MessagingUtils.warningDialog(DerivateView.VIEW_HAS_UNSAVED_CHANGES, this, DerivateView.YOU_NEED_TO_SAVE_BEFORE_PERFORMING_THIS_ACTION);
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return;
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}
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FieldUnit fieldUnit = FieldUnit.NewInstance();
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fieldUnit = CdmBase.deproxy(CdmStore.getService(IOccurrenceService.class).save(fieldUnit), FieldUnit.class);
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derivateView.getConversationHolder().commit();
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derivateView.addFieldUnit(fieldUnit);
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derivateView.updateRootEntities();
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derivateView.refreshTree(fieldUnit);
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}
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}
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@CanExecute
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public boolean canExecute(@Named(IServiceConstants.ACTIVE_PART) MPart part, MHandledMenuItem item) {
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DerivateView derivateView = (DerivateView) part.getObject();
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boolean listenToSelectionChange = derivateView.isListenToSelectionChange();
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setItemVisibility(item, listenToSelectionChange);
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if(listenToSelectionChange &&
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item.getElementId().equals(AppModelId.HANDLEDMENUITEM_EU_ETAXONOMY_TAXEDITOR_EDITOR_HANDLEDMENUITEM_CREATE_FIELD_UNIT_FOR_TAXON)){
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Object selectionInput = derivateView.getSelectionInput();
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if(selectionInput instanceof CdmBase && ((CdmBase) selectionInput).isInstanceOf(Taxon.class)){
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final Taxon taxon = HibernateProxyHelper.deproxy(CdmStore.getService(ITaxonService.class).load(((CdmBase)selectionInput).getUuid()), Taxon.class);
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item.setLabel(String.format(Messages.CreateFieldUnitContextMenu_CREATE_FIELD_UNIT_FOR, taxon.getName()));
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}
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}
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return true;
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}
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private void setItemVisibility(MHandledMenuItem item, boolean isListeningToSelectionChange) {
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if(item.getElementId().equals(AppModelId.HANDLEDMENUITEM_EU_ETAXONOMY_TAXEDITOR_EDITOR_HANDLEDMENUITEM_CREATEFIELDUNIT)){
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item.setVisible(!isListeningToSelectionChange);
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}
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else{
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item.setVisible(isListeningToSelectionChange);
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}
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}
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}
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