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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.e4;
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import java.util.ArrayList;
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import java.util.Collection;
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import javax.inject.Inject;
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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.IStructuredSelection;
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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.TransferData;
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import eu.etaxonomy.cdm.persistence.dto.AbstractTermDto;
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import eu.etaxonomy.cdm.persistence.dto.TermDto;
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import eu.etaxonomy.cdm.persistence.dto.TermVocabularyDto;
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import eu.etaxonomy.taxeditor.editor.definedterm.operation.MoveDefinedTermOperation;
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import eu.etaxonomy.taxeditor.l10n.Messages;
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import eu.etaxonomy.taxeditor.model.AbstractUtility;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
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import eu.etaxonomy.taxeditor.store.StoreUtil;
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import eu.etaxonomy.taxeditor.ui.EditViewerDropAdapter;
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/**
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*
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* @author pplitzner
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* @since Aug 22, 2017
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*
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*/
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public class DefinedTermDropAdapterE4 extends EditViewerDropAdapter {
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public static final String MOVE_FAILED = Messages.DefinedTermDropAdapterE4_MOVE_FAILED;
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private static final String MOVE_FAILED_MESSAGE = Messages.DefinedTermDropAdapterE4_MOVE_FAILED_MESSAGE;
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private final DefinedTermEditorE4 editor;
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@Inject
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private UISynchronize sync;
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@Inject
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protected DefinedTermDropAdapterE4(DefinedTermEditorE4 editor) {
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super(editor.getViewer());
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this.editor = editor;
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}
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@Override
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public boolean performDrop(Object data) {
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if(StoreUtil.promptCheckIsDirty(editor) || data == null){
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return false;
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}
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AbstractTermDto target = (AbstractTermDto) getCurrentTarget();//can be vocab
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int currentLocation = getCurrentLocation();
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IStructuredSelection droppedTerms = (IStructuredSelection) data;
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Collection<TermDto> sourceTerms = new ArrayList<>(); //Arrays.asList(droppedElements)
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for (Object droppedTerm : droppedTerms.toList()) {
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TermDto term = (TermDto) droppedTerm;
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sourceTerms.add(term);
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}
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// cannot drop a term onto itself or at its own children
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for (Object droppedObject : sourceTerms) {
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if(droppedObject==null){
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MessagingUtils.warningDialog(MOVE_FAILED, this.getClass(),
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Messages.DefinedTermDropAdapterE4_MOVE_FAILED_SAVE_MESSAGE);
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return false;
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}
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if (droppedObject.equals(target)) {
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MessagingUtils.warningDialog(MOVE_FAILED, this.getClass(),
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MOVE_FAILED_MESSAGE);
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return false;
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}
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// check if target is a child of the dropped term
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if(target instanceof TermDto){
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TermDto parentTerm = (TermDto)target;
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TermDto partOfDto = parentTerm.getPartOfDto();
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while(partOfDto!=null){
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if(partOfDto.equals(droppedObject)){
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MessagingUtils.warningDialog(MOVE_FAILED, this.getClass(),
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MOVE_FAILED_MESSAGE);
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return false;
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}
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partOfDto = partOfDto.getPartOfDto();
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}
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TermDto kindOfDto = parentTerm.getKindOfDto();
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while(kindOfDto!=null){
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if(kindOfDto.equals(droppedObject)){
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MessagingUtils.warningDialog(MOVE_FAILED, this.getClass(),
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MOVE_FAILED_MESSAGE);
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return false;
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}
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kindOfDto = kindOfDto.getKindOfDto();
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}
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}
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}
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AbstractPostOperation operation = new MoveDefinedTermOperation(Messages.DefinedTermDropAdapterE4_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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AbstractUtility.executeOperation(operation, sync);
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// select the newly moved objects
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editor.getViewer().setSelection(new StructuredSelection(sourceTerms));
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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,
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TransferData transferType) {
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boolean valid = LocalSelectionTransfer.getTransfer().isSupportedType(transferType)
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&& target instanceof AbstractTermDto;
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if(target instanceof TermVocabularyDto && getCurrentLocation()!=ViewerDropAdapter.LOCATION_ON){
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valid = false;
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}
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return valid;
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}
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}
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