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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.e4.handler;
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import javax.inject.Named;
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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.e4.core.di.annotations.CanExecute;
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import org.eclipse.e4.ui.model.application.ui.basic.MPart;
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import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
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import org.eclipse.e4.ui.services.IServiceConstants;
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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.swt.widgets.Shell;
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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.polytomous.PolytomousKeyEditorLabels;
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import eu.etaxonomy.taxeditor.editor.key.polytomous.e4.PolytomousKeyListEditorE4;
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import eu.etaxonomy.taxeditor.editor.key.polytomous.operation.DeleteNodeOperation;
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import eu.etaxonomy.taxeditor.editor.l10n.Messages;
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import eu.etaxonomy.taxeditor.model.AbstractUtility;
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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 DeleteNodeHandlerE4 extends AbstractPolytomousKeyNodeHandlerE4 {
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private static final String DO_YOU_REALLY_WANT_TO_DELETE_THE_NODE_THIS_OPERATION_IS_NOT_REVERSABLE = Messages.DeleteNodeHandler_REALLY_DELETE;
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private static final String CONFIRM_DELETION_OF_CHILDREN = Messages.DeleteNodeHandler_CONFIRM_DELETE;
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private static final String NO = Messages.DeleteNodeHandler_NO;
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private static final String CANCEL = Messages.DeleteNodeHandler_CANCEL;
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private static final String YES = Messages.DeleteNodeHandler_YES;
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PolytomousKeyNode nodeToBeDeleted;
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boolean deleteChildren;
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public DeleteNodeHandlerE4(String label) {
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super(label);
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}
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public DeleteNodeHandlerE4() {
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super(PolytomousKeyEditorLabels.DELETE_NODE_POLYTOMOUS_KEY_NODE_LABEL);
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}
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@Override
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public IStatus allowOperations(@Named(IServiceConstants.ACTIVE_SELECTION)IStructuredSelection selection,
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@Named(IServiceConstants.ACTIVE_SHELL)Shell shell,
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@Named(IServiceConstants.ACTIVE_PART)MPart activePart,
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MHandledMenuItem menuItem) {
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if (selection.getFirstElement() instanceof PolytomousKeyNode) {
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label = menuItem.getLocalizedLabel();
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PolytomousKeyNode node = (PolytomousKeyNode)selection.getFirstElement();
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nodeToBeDeleted = node;
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MessageDialog dialog;
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if (node.getChildren().size()>0){
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String[] buttonLables = {YES, NO,CANCEL};
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dialog = new MessageDialog(null, CONFIRM_DELETION_OF_CHILDREN, null, DO_YOU_REALLY_WANT_TO_DELETE_THE_NODE_THIS_OPERATION_IS_NOT_REVERSABLE+Messages.DeleteNodeHandler_NODE_HAS_CHILDREN, MessageDialog.QUESTION_WITH_CANCEL, buttonLables, 0);
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int returnCode = dialog.open();
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if (returnCode == 0){
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deleteChildren = false;
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} else if (returnCode == 1){
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deleteChildren = true;
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} else{
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return new Status(IStatus.CANCEL, "unknown", //$NON-NLS-1$
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null);
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}
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}else{
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String[] buttonLables = {YES, CANCEL};
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dialog = new MessageDialog(null, CONFIRM_DELETION_OF_CHILDREN, null, DO_YOU_REALLY_WANT_TO_DELETE_THE_NODE_THIS_OPERATION_IS_NOT_REVERSABLE, MessageDialog.QUESTION_WITH_CANCEL, buttonLables, 1);
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int returnCode = dialog.open();
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if (returnCode == 0){
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deleteChildren = false;
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} else if (returnCode == 1){
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return new Status(IStatus.CANCEL, "unknown", //$NON-NLS-1$
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null);
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}
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}
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} else {
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MessageDialog.openInformation(
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shell,
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PolytomousKeyEditorLabels.NO_KEY_NODE_SELECTED,
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PolytomousKeyEditorLabels.NO_KEY_NODE_FOR_INSERT_NODE_SELECTED_MESSAGE
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);
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}
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return Status.OK_STATUS;
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}
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@Override
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public AbstractOperation prepareOperation(@Named(IServiceConstants.ACTIVE_SELECTION)IStructuredSelection selection,
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@Named(IServiceConstants.ACTIVE_SHELL)Shell shell,
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@Named(IServiceConstants.ACTIVE_PART)MPart activePart,
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MHandledMenuItem menuItem) {
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IUndoContext undoContext = EditorUtil.getUndoContext();
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PolytomousKeyListEditorE4 editor = (PolytomousKeyListEditorE4) activePart.getObject();
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if (editor.isDirty()){
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boolean proceed = MessageDialog.openQuestion(null,
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Messages.DeleteNodeHandler_SAVE_CHANGES_TITLE, Messages.DeleteNodeHandler_SAVE_CHANGES_MESSAGE);
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if (!proceed) {
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return null;
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}else{
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editor.doSave(AbstractUtility.getMonitor());
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}
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}
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label = menuItem.getLocalizedLabel();
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DeleteNodeOperation operation ;
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if (deleteChildren){
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operation = new DeleteNodeOperation(label, undoContext, nodeToBeDeleted, editorPage, true);
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}else{
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operation = new DeleteNodeOperation(label, undoContext, nodeToBeDeleted, editorPage, false);
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}
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return operation;
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}
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@Override
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public void onComplete() {
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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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protected Object getTrigger() {
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return this;
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}
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@CanExecute
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public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION)Object selection,
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MHandledMenuItem menuItem){
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boolean canExecute = false;
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canExecute = selection instanceof PolytomousKeyNode;
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menuItem.setVisible(canExecute);
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return canExecute;
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}
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}
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