1 /*******************************************************************************
2 * Copyright (c) 2007, 2012 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.browsing.ui.swt.widgets.impl;
14 import org.eclipse.jface.viewers.ISelection;
15 import org.eclipse.swt.widgets.Combo;
16 import org.simantics.db.WriteGraph;
17 import org.simantics.db.common.request.WriteRequest;
18 import org.simantics.db.exception.DatabaseException;
19 import org.simantics.db.layer0.util.Layer0Utils;
20 import org.simantics.db.management.ISessionContext;
21 import org.simantics.utils.ReflectionUtils;
22 import org.simantics.utils.ui.ISelectionUtils;
24 abstract public class ComboModifyListenerImpl<T> implements TextModifyListener, Widget {
26 private ISessionContext context;
27 private Object lastInput = null;
29 final private Class<?> clazz;
31 public ComboModifyListenerImpl() {
32 clazz = ReflectionUtils.getSingleParameterType(getClass());
36 public void modifyText(TrackedModifyEvent e) {
38 Combo combo = (Combo)e.getWidget();
39 final String textValue = combo.getText();
40 final Object input = lastInput;
43 context.getSession().syncRequest(new WriteRequest() {
45 @SuppressWarnings("unchecked")
47 public void perform(WriteGraph graph) throws DatabaseException {
48 graph.markUndoPoint();
49 T single = (T) ISelectionUtils.filterSingleSelection((ISelection)input, clazz);
50 applyText(graph, single, textValue);
51 Layer0Utils.addCommentMetadata(graph, "Modified " + single.toString() + " to " + textValue);
55 } catch (DatabaseException e1) {
61 public void setInput(ISessionContext context, Object parameter) {
62 this.context = context;
63 lastInput = parameter;
66 abstract public void applyText(WriteGraph graph, T input, String text) throws DatabaseException;