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// $Id$
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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.definedterm;
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import java.util.ArrayList;
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import java.util.Collection;
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import org.eclipse.jface.viewers.StructuredSelection;
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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.DropTargetEvent;
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import org.eclipse.swt.dnd.TransferData;
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import eu.etaxonomy.cdm.model.common.DefinedTermBase;
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import eu.etaxonomy.cdm.model.common.OrderedTermBase;
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import eu.etaxonomy.cdm.model.common.TermBase;
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import eu.etaxonomy.taxeditor.editor.definedterm.operation.MoveDefinedTermOperation;
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import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
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import eu.etaxonomy.taxeditor.store.StoreUtil;
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/**
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* @author l.morris
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* @date 10 Jan 2012
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*
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*/
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public class DefinedTermDropAdapter extends ViewerDropAdapter {
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private final DefinedTermEditor editor;
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/**
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* @param viewer
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*/
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protected DefinedTermDropAdapter(DefinedTermEditor editor) {
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super(editor.getViewer());
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this.editor = editor;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang.Object)
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*/
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@Override
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public boolean performDrop(Object data) {
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TermBase target = (TermBase) getCurrentTarget();//can be vocab
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int currentLocation = getCurrentLocation();
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System.out.println("current location : " + currentLocation + " , target : " + target.getTitleCache());
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//DefinedTermBase[] droppedElements = (DefinedTermBase[]) data;
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Object[] droppedTerms = (Object[]) data;
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Collection<DefinedTermBase> sourceTerms = new ArrayList<DefinedTermBase>(); //Arrays.asList(droppedElements)
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for (Object droppedTerm : droppedTerms) {
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DefinedTermBase term = (DefinedTermBase) droppedTerm;
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sourceTerms.add(term);
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}
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AbstractPostOperation operation = new MoveDefinedTermOperation("Move Descriptions",
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StoreUtil.getUndoContext(),
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target,
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sourceTerms,
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editor,
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currentLocation);
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//TODO: implement execute
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StoreUtil.executeOperation(operation);
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// select the newly moved objects
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editor.getViewer().setSelection(new StructuredSelection(sourceTerms.toArray(new TermBase[sourceTerms.size()])));
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return true;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
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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 transferType) {
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boolean transferDataIsSupported = TermTransfer.getInstance().isSupportedType(transferType);
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// maybe don't need this - they will be all TermBase anyway
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return target instanceof TermBase && transferDataIsSupported;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ViewerDropAdapter#dragOver(org.eclipse.swt.dnd.DropTargetEvent)
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*/
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@Override
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public void dragOver(DropTargetEvent event) {
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super.dragOver(event);
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TermBase target = (TermBase) getCurrentTarget();
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if(!(target instanceof OrderedTermBase)) {
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// this is to only disable insert between items
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event.feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL;
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}
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}
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}
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