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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.editor.key.polytomous.handler;
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import org.eclipse.core.commands.ExecutionEvent;
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import org.eclipse.core.commands.ExecutionException;
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import org.eclipse.core.commands.common.NotDefinedException;
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import org.eclipse.core.commands.operations.AbstractOperation;
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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.viewers.IStructuredSelection;
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import org.eclipse.ui.IEditorPart;
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import org.eclipse.ui.handlers.HandlerUtil;
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import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
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import eu.etaxonomy.cdm.model.description.PolytomousKeyNode;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.editor.key.KeyEditor;
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import eu.etaxonomy.taxeditor.editor.key.polytomous.IPolytomousKeyEditorPage;
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import eu.etaxonomy.taxeditor.editor.key.polytomous.PolytomousKeyEditorLabels;
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import eu.etaxonomy.taxeditor.editor.key.polytomous.PolytomousKeyListEditor;
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import eu.etaxonomy.taxeditor.editor.key.polytomous.operation.DeleteNodeOperation;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
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/**
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* @author n.hoffmann
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* @created Dec 6, 2010
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* @version 1.0
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*/
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public class DeleteNodeHandler extends AbstractPolytomousKeyNodeHandler {
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PolytomousKeyNode nodeToBeDeleted;
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/**
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* @param label
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*/
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public DeleteNodeHandler(String label) {
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super(label);
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}
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public DeleteNodeHandler() {
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super(PolytomousKeyEditorLabels.DELETE_NODE_POLYTOMOUS_KEY_NODE_LABEL);
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}
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/*
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* (non-Javadoc)
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*
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* @see
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* org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
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* ExecutionEvent)
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*/
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@Override
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public Object execute(ExecutionEvent event) throws ExecutionException {
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IEditorPart editor = HandlerUtil.getActiveEditor(event);
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if (editor.isDirty()){
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boolean proceed = MessageDialog.openQuestion(null,
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"Save changes", "You have made changes that must be saved before you can delete the node. Would you like to proceed?");
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if (!proceed) {
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return null;
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}else{
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editor.doSave(EditorUtil.getMonitor());
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}
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}
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if (editor instanceof KeyEditor) {
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IPolytomousKeyEditorPage editorPage = (IPolytomousKeyEditorPage) ((KeyEditor) editor)
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.getActiveEditor();
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IStructuredSelection selection = (IStructuredSelection) HandlerUtil
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.getCurrentSelection(event);
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if (selection.getFirstElement() instanceof PolytomousKeyNode) {
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try {
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String label = event.getCommand().getName();
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IUndoContext undoContext = EditorUtil.getUndoContext();
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for (Object element : selection.toArray()) {
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PolytomousKeyNode keyNode = HibernateProxyHelper.deproxy(element, PolytomousKeyNode.class);
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AbstractPostOperation operation = new DeleteNodeOperation(
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label, undoContext, keyNode, editorPage);
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EditorUtil.executeOperation(operation);
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}
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} catch (NotDefinedException e) {
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MessagingUtils.warn(getClass(), "Command name not set.");
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}
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} else {
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MessageDialog.openInformation(
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EditorUtil.getShell(),
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"No Key Node Selected",
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"Please right-click on a specific key node to delete a key node.");
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}
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}
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return null;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public IStatus allowOperations(ExecutionEvent event) {
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IEditorPart editor = HandlerUtil.getActiveEditor(event);
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if (editor instanceof KeyEditor) {
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editorPage = (IPolytomousKeyEditorPage) ((KeyEditor) editor)
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.getActiveEditor();
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if (editorPage instanceof PolytomousKeyListEditor) {
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PolytomousKeyListEditor klEditor = (PolytomousKeyListEditor) editorPage;
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IStructuredSelection selection = (IStructuredSelection) HandlerUtil.getCurrentSelection(event);
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if (selection.getFirstElement() instanceof PolytomousKeyNode) {
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nodeToBeDeleted = (PolytomousKeyNode) selection.getFirstElement();
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} else {
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return new Status(IStatus.ERROR,
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"unknown",
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PolytomousKeyEditorLabels.NO_KEY_NODE_FOR_CHILD_SELECTED_MESSAGE);
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}
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}
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}
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return Status.OK_STATUS;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public AbstractOperation prepareOperation(ExecutionEvent event) {
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IUndoContext undoContext = EditorUtil.getUndoContext();
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String label = "";
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try {
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label = event.getCommand().getName();
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} catch (NotDefinedException e) {
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MessagingUtils.warn(getClass(), "Command name not set.");
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}
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return new DeleteNodeOperation(label, undoContext, nodeToBeDeleted, editorPage);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void onComplete() {
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// TODO Auto-generated method stub
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}
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}
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