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/**
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* Copyright (C) 2017 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.featuretree.e4;
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import java.net.URI;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import org.eclipse.e4.ui.model.application.ui.MDirtyable;
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import org.eclipse.jface.util.LocalSelectionTransfer;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.jface.viewers.TreeViewer;
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import org.eclipse.jface.viewers.Viewer;
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import org.eclipse.jface.viewers.ViewerDropAdapter;
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import org.eclipse.swt.dnd.DND;
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import org.eclipse.swt.dnd.TransferData;
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import eu.etaxonomy.cdm.api.service.IFeatureNodeService;
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import eu.etaxonomy.cdm.model.common.OrderedTermVocabulary;
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import eu.etaxonomy.cdm.model.common.TermVocabulary;
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import eu.etaxonomy.cdm.model.description.Feature;
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import eu.etaxonomy.cdm.model.description.FeatureNode;
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import eu.etaxonomy.cdm.model.description.FeatureTree;
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import eu.etaxonomy.taxeditor.editor.definedterm.TermTransfer;
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import eu.etaxonomy.taxeditor.featuretree.FeatureNodeTransfer;
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import eu.etaxonomy.taxeditor.l10n.Messages;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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import eu.etaxonomy.taxeditor.ui.dialog.selection.TermVocabularySelectionDialog;
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import eu.etaxonomy.taxeditor.view.webimport.termimport.wrapper.OntologyTermWrapper;
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public class FeatureNodeDropAdapter extends ViewerDropAdapter {
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private MDirtyable dirtyable;
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public FeatureNodeDropAdapter(MDirtyable dirtyable, Viewer viewer) {
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super(viewer);
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this.dirtyable = dirtyable;
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}
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@Override
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public boolean performDrop(Object data) {
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Object currentTarget = getCurrentTarget();
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FeatureNode target = null;
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if(currentTarget instanceof FeatureTree){
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target = ((FeatureTree) currentTarget).getRoot();
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}
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else if(currentTarget instanceof FeatureNode){
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target = (FeatureNode) currentTarget;
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}
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int position = 0;
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if (target != null) {
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int location = getCurrentLocation();
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FeatureNode parent = target.getParent();
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if(parent!=null){
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if (location == LOCATION_BEFORE) {
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position = Math.max(0, parent.getIndex(target) - 1);
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target = parent;
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}
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if (location == LOCATION_AFTER) {
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position = parent.getIndex(target);
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target = parent;
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}
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}
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}
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if(target==null){
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MessagingUtils.warningDialog(Messages.FeatureNodeDropAdapter_INVALID_TARGET, this, Messages.FeatureNodeDropAdapter_INVALID_TARGET_MESSAGE);
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return false;
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}
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Collection<Object> droppedObjects = Collections.emptyList();
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if(data instanceof Object[]){
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droppedObjects = Arrays.asList((Object[])data);
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}
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else if(data instanceof IStructuredSelection){
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droppedObjects = ((IStructuredSelection) data).toList();
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}
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TreeViewer viewer = (TreeViewer) getViewer();
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// cannot drop a feature node onto itself
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for (Object droppedObject : droppedObjects) {
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if(droppedObject==null){
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MessagingUtils.warningDialog("Move failed", this.getClass(),
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"Moving the feature node failed. Try saving before.");
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return false;
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}
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if (droppedObject.equals(target)) {
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return false;
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}
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}
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for (Object droppedObject : droppedObjects) {
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if(droppedObject instanceof FeatureNode){
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FeatureNode droppedNode = (FeatureNode) droppedObject;
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//move operation
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if(getCurrentOperation()==DND.DROP_MOVE){
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CdmStore.getService(IFeatureNodeService.class).moveFeatureNode(droppedNode.getUuid(), target.getUuid(), position);
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}
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//copy operation
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else if(getCurrentOperation()==DND.DROP_COPY){
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CdmStore.getService(IFeatureNodeService.class).addChildFeatureNode(target.getUuid(), droppedNode.getFeature().getUuid());
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}
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viewer.reveal(droppedNode);
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}
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else if(droppedObject instanceof Feature){
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Feature droppedFeature = (Feature) droppedObject;
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CdmStore.getService(IFeatureNodeService.class).addChildFeatureNode(target.getUuid(), droppedFeature.getUuid());
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}
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else if(droppedObject instanceof OntologyTermWrapper){
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OntologyTermWrapper wrapper = (OntologyTermWrapper)droppedObject;
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TermVocabulary vocabulary = wrapper.getTermVocabulary();
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if(vocabulary==null){
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vocabulary = TermVocabularySelectionDialog.select(
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"Choose vocabulary for import", viewer.getControl().getShell(), null);
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if(vocabulary instanceof OrderedTermVocabulary){
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MessagingUtils.warningDialog("Import not possible", this,
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"The chosen vocabulary is an ordered vocabulary.\n"
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+ "Importing into ordered vocabularies is currently not supported.");
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return false;
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}
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}
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if(vocabulary==null){
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return false;
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}
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else{
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Feature feature = Feature.NewInstance(wrapper.getDescription(), wrapper.getLabel(), null);
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feature.setUri(URI.create(wrapper.getUri()));
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vocabulary.addTerm(feature);
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CdmStore.getService(IFeatureNodeService.class).createChildFeatureNode(target, feature);
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}
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}
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}
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dirtyable.setDirty(true);
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viewer.refresh();
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return true;
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}
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@Override
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public boolean validateDrop(Object target, int operation, TransferData transferData) {
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boolean isSupported = FeatureNodeTransfer.getInstance().isSupportedType(transferData);
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isSupported |= TermTransfer.getInstance().isSupportedType(transferData);
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isSupported |= LocalSelectionTransfer.getTransfer().isSupportedType(transferData);
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isSupported &= getViewer().getInput()!=null;
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return isSupported;
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}
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}
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