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/**
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* Copyright (C) 2015 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.navigation.navigator;
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import java.util.EnumSet;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Set;
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import java.util.UUID;
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import org.apache.log4j.Logger;
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import org.eclipse.core.commands.operations.IUndoContext;
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import org.eclipse.jface.dialogs.MessageDialog;
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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.TreeSelection;
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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.hibernate.HibernateProxyHelper;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.model.taxon.Classification;
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import eu.etaxonomy.cdm.model.taxon.ITaxonTreeNode;
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import eu.etaxonomy.cdm.model.taxon.TaxonNode;
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import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;
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import eu.etaxonomy.taxeditor.navigation.NavigationUtil;
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import eu.etaxonomy.taxeditor.navigation.l10n.Messages;
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import eu.etaxonomy.taxeditor.navigation.navigator.operation.MoveTaxonOperation;
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import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
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import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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/**
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* <p>TreeNodeDropAdapter class.</p>
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*
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* @author k.luther
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* @date 02.06.2015
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*/
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public class TreeNodeDropAdapter extends ViewerDropAdapter implements IPostOperationEnabled {
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protected static final String TREE_NODE_DROP_ADAPTER_UNSAVED_PARENT_MESSAGE = Messages.TreeNodeDropAdapter_UNSAVED_PARENT_MESSAGE;
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protected static final String TREE_NODE_DROP_ADAPTER_UNSAVED_PARENT = Messages.TreeNodeDropAdapter_UNSAVED_PARENT;
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protected static final String TREE_NODE_DROP_ADAPTER_MOVE_TAXON = Messages.TreeNodeDropAdapter_MOVE_TAXON;
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protected static final String TREE_NODE_DROP_ADAPTER_CANCEL = Messages.TreeNodeDropAdapter_CANCEL;
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protected static final String TREE_NODE_DROP_ADAPTER_BEHIND = Messages.TreeNodeDropAdapter_BEHIND;
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protected static final String TREE_NODE_DROP_ADAPTER_CHILD = Messages.TreeNodeDropAdapter_CHILD;
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protected static final String DO_YOU_WANT_TO_MOVE_THE_TAXONNODE_AS_CHILD_OR_BEHIND_THE_TARGET_NODE = Messages.TreeNodeDropAdapter_MOVE_BEHIND;
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protected static final String TARGET_NODE = Messages.TreeNodeDropAdapter_TARGET_NODE;
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private static final Logger logger = Logger.getLogger(TreeNodeDropAdapter.class);
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private final TaxonNavigatorViewer navigatorViewer;
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/**
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* @param viewer
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*/
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protected TreeNodeDropAdapter(TaxonNavigatorViewer navigatorViewer) {
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super(navigatorViewer);
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this.navigatorViewer = navigatorViewer;
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}
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/** Constant <code>ID="eu.etaxonomy.taxeditor.navigation.navig"{trunked}</code> */
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public static final String ID = "eu.etaxonomy.taxeditor.navigation.navigator.dropassistant"; //$NON-NLS-1$
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private static final EnumSet<CRUD> UPDATE = EnumSet.of(CRUD.UPDATE);
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public enum MovingType{
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CHILD, PREVIOUS, BEHIND
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}
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/** {@inheritDoc} */
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@Override
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public boolean performDrop(Object target) {
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if (target instanceof ITaxonTreeNode) {
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Set<TaxonNode> taxonNodes = getSelectedTaxa();
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ITaxonTreeNode targetTreeNode = (ITaxonTreeNode) target;
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if (targetTreeNode instanceof Classification){
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targetTreeNode = ((Classification)targetTreeNode).getRootNode();
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targetTreeNode = HibernateProxyHelper.deproxy(targetTreeNode, TaxonNode.class);
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}
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if(taxonNodes != null) {
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if (taxonNodes.size() == 1){
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return moveTaxon(taxonNodes, targetTreeNode);
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} else{
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if( MessageDialog.openConfirm(null, Messages.TreeNodeDropAdapter_MOVING, Messages.TreeNodeDropAdapter_MOVING_MESSAGE)){
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return true;
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}
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}
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}
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}
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return false;
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}
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private Set<TaxonNode> getSelectedTaxa(){
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HashSet<TaxonNode> taxonNodes = new HashSet<TaxonNode>();
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ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
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if (selection instanceof TreeSelection) {
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Iterator<?> selectionIterator = ((TreeSelection) selection).iterator();
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while (selectionIterator.hasNext()){
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Object object = selectionIterator.next();
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if(object instanceof TaxonNode){
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TaxonNode taxonNode = (TaxonNode) object;
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taxonNodes.add(taxonNode);
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}
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}
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}
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return taxonNodes.size() > 0 ? taxonNodes : null;
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}
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/** {@inheritDoc} */
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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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if (target instanceof ITaxonTreeNode) {
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// check users permissions with target taxonnode and taxon
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if (target instanceof TaxonNode) {
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TaxonNode targetNode = (TaxonNode)target;
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boolean hasTargetNodePermission = CdmStore.currentAuthentiationHasPermission(targetNode, UPDATE);
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boolean hasTargetTaxonPermission = targetNode.getTaxon() == null ?
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true :
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CdmStore.currentAuthentiationHasPermission(targetNode.getTaxon(), UPDATE);
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if(logger.isDebugEnabled()){
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logger.debug("target: " + targetNode.getTaxon() == null? "-" : targetNode.getTaxon().getTitleCache()); //$NON-NLS-1$
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}
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if(!hasTargetNodePermission || ! hasTargetNodePermission){
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if(logger.isDebugEnabled()){
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logger.debug("CANCEL_STATUS for target node: " + hasTargetNodePermission + " " + hasTargetTaxonPermission + " "); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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}
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return false;
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}
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}
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// do not allow to drop onto itself and
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// check users permissions with all selected taxon nodes and taxa
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for(TaxonNode taxonNode : getSelectedTaxa()){
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if (logger.isDebugEnabled()){
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logger.debug("selectedTaxa: " + taxonNode.getTaxon() == null? "-" : taxonNode.getTaxon().getTitleCache()); //$NON-NLS-1$
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}
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boolean isSameTaxonNode = taxonNode.equals(target);
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boolean hasTaxonNodePermission = CdmStore.currentAuthentiationHasPermission(taxonNode, UPDATE);
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boolean hasTaxonPermission = taxonNode.getTaxon() == null ?
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true :
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CdmStore.currentAuthentiationHasPermission(taxonNode.getTaxon(), UPDATE);CdmStore.currentAuthentiationHasPermission(taxonNode.getTaxon(), UPDATE);
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if (
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isSameTaxonNode
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|| !hasTaxonNodePermission
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|| !hasTaxonPermission
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) {
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if(logger.isDebugEnabled()){
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logger.debug("CANCEL_STATUS for selected " + isSameTaxonNode + Messages.TreeNodeDropAdapter_10 + hasTaxonNodePermission + " " + hasTaxonPermission + " "); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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}
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return false;
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}
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}
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logger.debug("OK_STATUS"); //$NON-NLS-1$
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return true;
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}
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logger.debug("CANCEL_STATUS"); //$NON-NLS-1$
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return false;
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}
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/**
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* @param childTaxonNode
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* @param parentTaxon
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* @return
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*/
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private boolean moveTaxon(Set<TaxonNode> taxonNodes, ITaxonTreeNode targetITaxonTreeNode) {
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TaxonNavigator taxonNavigator;
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taxonNavigator = (TaxonNavigator) NavigationUtil.showView(TaxonNavigator.ID);
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if(targetITaxonTreeNode instanceof TaxonNode){
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TaxonNode targetTaxonNode = (TaxonNode) targetITaxonTreeNode;
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// Make sure parent taxon does not have unsaved changes
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if (NavigationUtil.isDirty(targetTaxonNode)){
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MessageDialog.openWarning(NavigationUtil.getShell(), TREE_NODE_DROP_ADAPTER_UNSAVED_PARENT, TREE_NODE_DROP_ADAPTER_UNSAVED_PARENT_MESSAGE);
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return false;
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}
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}
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Iterator<TaxonNode> taxIterator = taxonNodes.iterator();
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Set<UUID> uuids = new HashSet<UUID>();
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TaxonNode node = null;
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while(taxIterator.hasNext()){
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node = taxIterator.next();
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uuids.add(node.getUuid());
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}
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if (!PreferencesUtil.getSortNodesNaturally()){
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IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
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if (workspaceUndoContext == null) {
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logger.error("Workspace undo context is null. DND operation cancelled"); //$NON-NLS-1$
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return false;
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}
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AbstractPostOperation<?> operation = new MoveTaxonOperation
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(TREE_NODE_DROP_ADAPTER_MOVE_TAXON, workspaceUndoContext, uuids, targetITaxonTreeNode, this, taxonNavigator, MovingType.CHILD);
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NavigationUtil.executeOperation(operation);
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logger.info("Moved taxa to new parent " + targetITaxonTreeNode); //$NON-NLS-1$
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return true;
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}else{
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String[] buttonLables = {TREE_NODE_DROP_ADAPTER_CHILD, TREE_NODE_DROP_ADAPTER_BEHIND,TREE_NODE_DROP_ADAPTER_CANCEL};
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MessageDialog dialog = new MessageDialog(null, TARGET_NODE, null, DO_YOU_WANT_TO_MOVE_THE_TAXONNODE_AS_CHILD_OR_BEHIND_THE_TARGET_NODE, MessageDialog.QUESTION_WITH_CANCEL, buttonLables, 0);
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dialog.open();
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int returnCode = dialog.getReturnCode();
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if (returnCode == 0){
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IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
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if (workspaceUndoContext == null) {
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logger.error("Workspace undo context is null. DND operation cancelled"); //$NON-NLS-1$
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return false;
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}
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AbstractPostOperation<?> operation = new MoveTaxonOperation
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(TREE_NODE_DROP_ADAPTER_MOVE_TAXON, workspaceUndoContext, uuids, targetITaxonTreeNode, this, taxonNavigator, MovingType.CHILD);
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NavigationUtil.executeOperation(operation);
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logger.info("Moved taxa to new parent " + targetITaxonTreeNode); //$NON-NLS-1$
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return true;
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}else if (returnCode == 1){
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IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
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if (workspaceUndoContext == null) {
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logger.error("Workspace undo context is null. DND operation cancelled"); //$NON-NLS-1$
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return false;
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}
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TaxonNode targetNode = (TaxonNode) targetITaxonTreeNode;
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AbstractPostOperation<?> operation = new MoveTaxonOperation
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(TREE_NODE_DROP_ADAPTER_MOVE_TAXON, workspaceUndoContext, uuids, targetNode, this, taxonNavigator, MovingType.PREVIOUS);
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NavigationUtil.executeOperation(operation);
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logger.info("Moved taxa to new parent " + targetITaxonTreeNode); //$NON-NLS-1$
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return true;
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}
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// } else if (returnCode == 2){
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// IUndoContext workspaceUndoContext = NavigationUtil.getWorkbenchUndoContext();
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// if (workspaceUndoContext == null) {
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// logger.error("Workspace undo context is null. DND operation cancelled");
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// return false;
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// }
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// TaxonNode targetNode = (TaxonNode) targetITaxonTreeNode;
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//
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// AbstractPostOperation operation = new MoveTaxonOperation
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// ("Move Taxon", workspaceUndoContext, uuids, targetNode, this, taxonNavigator, MovingType.BEHIND);
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// NavigationUtil.executeOperation(operation);
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//
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// logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
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// return true;
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// }
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else{
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return false;
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}
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}
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}
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/** {@inheritDoc} */
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@Override
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public boolean postOperation(CdmBase objectAffectedByOperation) {
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return true;
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}
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/**
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* <p>onComplete</p>
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*
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* @return a boolean.
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*/
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@Override
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public boolean onComplete() {
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// TODO Auto-generated method stub
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return false;
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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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event.feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_INSERT_AFTER;
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}
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}
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