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/**
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* Copyright (C) 2009 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.descriptiveDataSet.character;
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import java.util.Iterator;
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import org.eclipse.e4.ui.di.UISynchronize;
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import org.eclipse.jface.util.LocalSelectionTransfer;
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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.jface.viewers.Viewer;
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import org.eclipse.swt.dnd.DropTargetEvent;
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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.description.Character;
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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.featuretree.e4.FeatureTreeDropAdapter;
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import eu.etaxonomy.taxeditor.featuretree.e4.IFeatureTreeEditor;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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import eu.etaxonomy.taxeditor.store.StoreUtil;
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/**
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*
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* @author pplitzner
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* @date Jun 1, 2017
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*
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*/
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public class CharacterDropAdapter extends FeatureTreeDropAdapter {
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protected CharacterDropAdapter(IFeatureTreeEditor editor, Viewer viewer, UISynchronize sync) {
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super(editor, viewer, sync);
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}
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@Override
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protected Object determineTarget(DropTargetEvent event) {
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return event.item == null ? ((FeatureTree)getViewer().getInput()).getRoot() : event.item.getData();
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}
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@Override
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public boolean performDrop(Object data) {
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if(StoreUtil.checkDirty(editor)){
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return false;
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}
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FeatureNode target = (FeatureNode) getCurrentTarget();
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ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
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if(selection!=null
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&&selection instanceof IStructuredSelection
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){
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IStructuredSelection structuredSelection = (IStructuredSelection)selection;
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Iterator iterator = structuredSelection.iterator();
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while(iterator.hasNext()){
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Object next = iterator.next();
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if(next instanceof Character){
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Character character = (Character)next;
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if(target==null){
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//drop on feature tree
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target = ((FeatureTree)getViewer().getInput()).getRoot();
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}
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CdmStore.getService(IFeatureNodeService.class).addChildFeatureNode(target.getUuid(), character.getUuid());
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}
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}
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getViewer().refresh();
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LocalSelectionTransfer.getTransfer().setSelection(null);
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return true;
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}
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return super.performDrop(data);
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}
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@Override
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public boolean validateDrop(Object target, int operation,
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TransferData transferData) {
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LocalSelectionTransfer transfer = LocalSelectionTransfer.getTransfer();
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boolean valid = true;
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valid &= transfer.getSelection()!=null
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&& !transfer.getSelection().isEmpty();
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if(!valid){
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return super.validateDrop(target, operation, transferData);
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}
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return valid;
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}
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}
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