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comparison org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet013TableViewerEditing.d @ 90:6086085e153d

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Added databinding snippets. unmodified java sources.
author Frank Benoit <benoit@tionex.de>
date Sun, 19 Apr 2009 11:33:55 +0200
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children 5d5bd660917f
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89:0ca1aee7decf 90:6086085e153d
1 /*******************************************************************************
2 * Copyright (c) 2006 The Pampered Chef, Inc. and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * The Pampered Chef, Inc. - initial API and implementation
10 * Tom Schindl - cell editing
11 * Matthew Hall - bugs 260329, 260337
12 ******************************************************************************/
13
14 package org.eclipse.jface.examples.databinding.snippets;
15
16 import java.beans.PropertyChangeListener;
17 import java.beans.PropertyChangeSupport;
18 import java.util.LinkedList;
19 import java.util.List;
20
21 import org.eclipse.core.databinding.DataBindingContext;
22 import org.eclipse.core.databinding.beans.BeanProperties;
23 import org.eclipse.core.databinding.beans.BeansObservables;
24 import org.eclipse.core.databinding.observable.Realm;
25 import org.eclipse.core.databinding.observable.list.WritableList;
26 import org.eclipse.core.databinding.observable.value.IObservableValue;
27 import org.eclipse.jface.databinding.swt.SWTObservables;
28 import org.eclipse.jface.databinding.viewers.ObservableValueEditingSupport;
29 import org.eclipse.jface.databinding.viewers.ViewerSupport;
30 import org.eclipse.jface.databinding.viewers.ViewersObservables;
31 import org.eclipse.jface.viewers.CellEditor;
32 import org.eclipse.jface.viewers.ColumnViewer;
33 import org.eclipse.jface.viewers.TableViewer;
34 import org.eclipse.jface.viewers.TableViewerColumn;
35 import org.eclipse.jface.viewers.TextCellEditor;
36 import org.eclipse.jface.viewers.ViewerCell;
37 import org.eclipse.swt.SWT;
38 import org.eclipse.swt.layout.FillLayout;
39 import org.eclipse.swt.widgets.Composite;
40 import org.eclipse.swt.widgets.Display;
41 import org.eclipse.swt.widgets.Label;
42 import org.eclipse.swt.widgets.Shell;
43 import org.eclipse.swt.widgets.Table;
44
45 /**
46 * Demonstrates binding a TableViewer to a collection using the 3.3 Viewer APIs.
47 */
48 public class Snippet013TableViewerEditing {
49 public static void main(String[] args) {
50 final Display display = new Display();
51 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
52 public void run() {
53 ViewModel viewModel = new ViewModel();
54 Shell shell = new View(viewModel).createShell();
55
56 // The SWT event loop
57 while (!shell.isDisposed()) {
58 if (!display.readAndDispatch()) {
59 display.sleep();
60 }
61 }
62 }
63 });
64 }
65
66 // Minimal JavaBeans support
67 public static abstract class AbstractModelObject {
68 private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
69 this);
70
71 public void addPropertyChangeListener(PropertyChangeListener listener) {
72 propertyChangeSupport.addPropertyChangeListener(listener);
73 }
74
75 public void addPropertyChangeListener(String propertyName,
76 PropertyChangeListener listener) {
77 propertyChangeSupport.addPropertyChangeListener(propertyName,
78 listener);
79 }
80
81 public void removePropertyChangeListener(PropertyChangeListener listener) {
82 propertyChangeSupport.removePropertyChangeListener(listener);
83 }
84
85 public void removePropertyChangeListener(String propertyName,
86 PropertyChangeListener listener) {
87 propertyChangeSupport.removePropertyChangeListener(propertyName,
88 listener);
89 }
90
91 protected void firePropertyChange(String propertyName, Object oldValue,
92 Object newValue) {
93 propertyChangeSupport.firePropertyChange(propertyName, oldValue,
94 newValue);
95 }
96 }
97
98 // The data model class. This is normally a persistent class of some sort.
99 static class Person extends AbstractModelObject {
100 // A property...
101 String name = "John Smith";
102
103 public Person(String name) {
104 this.name = name;
105 }
106
107 public String getName() {
108 return name;
109 }
110
111 public void setName(String name) {
112 String oldValue = this.name;
113 this.name = name;
114 firePropertyChange("name", oldValue, name);
115 }
116 }
117
118 // The View's model--the root of our Model graph for this particular GUI.
119 //
120 // Typically each View class has a corresponding ViewModel class.
121 // The ViewModel is responsible for getting the objects to edit from the
122 // data access tier. Since this snippet doesn't have any persistent objects
123 // ro retrieve, this ViewModel just instantiates a model object to edit.
124 static class ViewModel {
125 // The model to bind
126 private List people = new LinkedList();
127 {
128 people.add(new Person("Steve Northover"));
129 people.add(new Person("Grant Gayed"));
130 people.add(new Person("Veronika Irvine"));
131 people.add(new Person("Mike Wilson"));
132 people.add(new Person("Christophe Cornu"));
133 people.add(new Person("Lynne Kues"));
134 people.add(new Person("Silenio Quarti"));
135 }
136
137 public List getPeople() {
138 return people;
139 }
140 }
141
142 /**
143 * Editing support that uses JFace Data Binding to control the editing
144 * lifecycle. The standard EditingSupport get/setValue(...) lifecycle is not
145 * used.
146 *
147 * @since 3.3
148 */
149 private static class InlineEditingSupport extends
150 ObservableValueEditingSupport {
151 private CellEditor cellEditor;
152
153 /**
154 * @param viewer
155 * @param dbc
156 */
157 public InlineEditingSupport(ColumnViewer viewer, DataBindingContext dbc) {
158
159 super(viewer, dbc);
160 cellEditor = new TextCellEditor((Composite) viewer.getControl());
161 }
162
163 protected CellEditor getCellEditor(Object element) {
164 return cellEditor;
165 }
166
167 protected IObservableValue doCreateCellEditorObservable(
168 CellEditor cellEditor) {
169
170 return SWTObservables.observeText(cellEditor.getControl(),
171 SWT.Modify);
172 }
173
174 protected IObservableValue doCreateElementObservable(Object element,
175 ViewerCell cell) {
176 return BeansObservables.observeValue(element, "name");
177 }
178 }
179
180 // The GUI view
181 static class View {
182 private ViewModel viewModel;
183 private Table committers;
184 private Label selectedCommitter;
185
186 public View(ViewModel viewModel) {
187 this.viewModel = viewModel;
188 }
189
190 public Shell createShell() {
191 // Build a UI
192 Display display = Display.getDefault();
193 Shell shell = new Shell(display);
194 shell.setLayout(new FillLayout(SWT.VERTICAL));
195 committers = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
196 committers.setLinesVisible(true);
197
198 selectedCommitter = new Label(shell, SWT.NONE);
199 // Set up data binding. In an RCP application, the threading
200 // Realm
201 // will be set for you automatically by the Workbench. In an SWT
202 // application, you can do this once, wrpping your binding
203 // method call.
204 DataBindingContext bindingContext = new DataBindingContext();
205 bindGUI(bindingContext);
206
207 // Open and return the Shell
208 shell.setSize(100, 300);
209 shell.open();
210 return shell;
211 }
212
213 protected void bindGUI(DataBindingContext bindingContext) {
214 // Since we're using a JFace Viewer, we do first wrap our Table...
215 TableViewer peopleViewer = new TableViewer(committers);
216 TableViewerColumn column = new TableViewerColumn(peopleViewer,
217 SWT.NONE);
218 column.setEditingSupport(new InlineEditingSupport(peopleViewer,
219 bindingContext));
220 column.getColumn().setWidth(100);
221
222 // Bind viewer to model
223 ViewerSupport.bind(peopleViewer, new WritableList(viewModel
224 .getPeople(), Person.class), BeanProperties.value(
225 Person.class, "name"));
226
227 // bind selectedCommitter label to the name of the current selection
228 IObservableValue selection = ViewersObservables
229 .observeSingleSelection(peopleViewer);
230 bindingContext.bindValue(SWTObservables
231 .observeText(selectedCommitter), BeansObservables
232 .observeDetailValue(selection, "name", String.class));
233 }
234 }
235
236 }