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// $Id$
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/**
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* Copyright (C) 2007 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 org.apache.log4j.Logger;
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import org.eclipse.core.commands.operations.IUndoContext;
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import org.eclipse.core.runtime.IStatus;
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import org.eclipse.core.runtime.Status;
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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.swt.dnd.DropTargetEvent;
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import org.eclipse.swt.dnd.TransferData;
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import org.eclipse.ui.navigator.CommonDropAdapter;
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import org.eclipse.ui.navigator.CommonDropAdapterAssistant;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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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.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.store.CdmStore;
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/**
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* <p>TaxonNodeDropAdapterAssistant class.</p>
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*
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* @author p.ciardelli
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* @created 03.06.2009
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* @version 1.0
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*/
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public class TreeNodeDropAdapterAssistant extends CommonDropAdapterAssistant implements IPostOperationEnabled {
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private static final Logger logger = Logger.getLogger(TreeNodeDropAdapterAssistant.class);
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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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/* (non-Javadoc)
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* @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#handleDrop(org.eclipse.ui.navigator.CommonDropAdapter, org.eclipse.swt.dnd.DropTargetEvent, java.lang.Object)
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*/
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/** {@inheritDoc} */
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@Override
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public IStatus handleDrop(CommonDropAdapter dropAdapter,
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DropTargetEvent dropTargetEvent, 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(taxonNodes != null) {
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return moveTaxon(taxonNodes, targetTreeNode);
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}
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}
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return Status.CANCEL_STATUS;
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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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/* (non-Javadoc)
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* @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
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*/
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/** {@inheritDoc} */
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@Override
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public IStatus 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 = CdmStore.currentAuthentiationHasPermission(targetNode.getTaxon(), UPDATE);
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if(logger.isDebugEnabled()){
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logger.debug("target: " + targetNode.getTaxon().getTitleCache());
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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.toString() + " " + hasTargetTaxonPermission.toString() + " ");
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}
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return Status.CANCEL_STATUS;
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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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logger.debug("selectedTaxa: " + taxonNode.getTaxon().getTitleCache());
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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 = 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.toString() + " " + hasTaxonNodePermission.toString() + " " + hasTaxonPermission.toString() + " ");
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}
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return Status.CANCEL_STATUS;
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}
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}
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logger.debug("OK_STATUS");
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return Status.OK_STATUS;
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}
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logger.debug("CANCEL_STATUS");
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return Status.CANCEL_STATUS;
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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 IStatus 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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// for(TaxonNode taxonNode : taxonNodes){
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// if (taxonNode.equals(targetTaxonNode)) {
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// return Status.CANCEL_STATUS;
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// }
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// }
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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(), "Unsaved Parent Taxon", "There are unsaved " +
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"changes in the parent taxon. Pleas save first.");
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return Status.CANCEL_STATUS;
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}
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// Make sure parentTaxon is not the drop target
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// if (!childTaxonNode.isTopmostNode() && childTaxonNode.getParent().equals(targetTaxonNode)){
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// return Status.CANCEL_STATUS;
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// }
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// Make sure taxon is not being dropped onto itself
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// if (childTaxonNode.equals(targetTaxonNode)) {
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// return Status.CANCEL_STATUS;
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// }
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}
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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 Status.CANCEL_STATUS;
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}
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AbstractPostOperation operation = new MoveTaxonOperation
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("Move Taxon", workspaceUndoContext, taxonNodes, targetITaxonTreeNode, this, taxonNavigator);
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NavigationUtil.executeOperation(operation);
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logger.info("Moved taxa to new parent " + targetITaxonTreeNode);
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return Status.OK_STATUS;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.taxeditor.operations.IPostOperationEnabled#postOperation(eu.etaxonomy.cdm.model.common.CdmBase)
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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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}
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