| /******************************************************************************* |
| * Copyright (c) 2006 The Pampered Chef, Inc. and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * The Pampered Chef, Inc. - initial API and implementation |
| * Tom Schindl - cell editing |
| ******************************************************************************/ |
| |
| package org.eclipse.jface.examples.databinding.snippets; |
| |
| import java.beans.PropertyChangeListener; |
| import java.beans.PropertyChangeSupport; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.eclipse.core.databinding.DataBindingContext; |
| import org.eclipse.core.databinding.beans.BeansObservables; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.list.WritableList; |
| import org.eclipse.core.databinding.observable.map.IObservableMap; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.jface.databinding.swt.SWTObservables; |
| import org.eclipse.jface.databinding.viewers.ObservableListContentProvider; |
| import org.eclipse.jface.databinding.viewers.ObservableMapLabelProvider; |
| import org.eclipse.jface.databinding.viewers.ObservableValueEditingSupport; |
| import org.eclipse.jface.databinding.viewers.ViewersObservables; |
| import org.eclipse.jface.viewers.CellEditor; |
| import org.eclipse.jface.viewers.ColumnViewer; |
| import org.eclipse.jface.viewers.TableViewer; |
| import org.eclipse.jface.viewers.TableViewerColumn; |
| import org.eclipse.jface.viewers.TextCellEditor; |
| import org.eclipse.jface.viewers.ViewerCell; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Label; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Table; |
| |
| /** |
| * Demonstrates binding a TableViewer to a collection using the 3.3 Viewer APIs. |
| */ |
| public class Snippet013TableViewerEditing { |
| public static void main(String[] args) { |
| final Display display = new Display(); |
| Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() { |
| public void run() { |
| ViewModel viewModel = new ViewModel(); |
| Shell shell = new View(viewModel).createShell(); |
| |
| // The SWT event loop |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) { |
| display.sleep(); |
| } |
| } |
| } |
| }); |
| } |
| |
| // Minimal JavaBeans support |
| public static abstract class AbstractModelObject { |
| private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport( |
| this); |
| |
| public void addPropertyChangeListener(PropertyChangeListener listener) { |
| propertyChangeSupport.addPropertyChangeListener(listener); |
| } |
| |
| public void addPropertyChangeListener(String propertyName, |
| PropertyChangeListener listener) { |
| propertyChangeSupport.addPropertyChangeListener(propertyName, |
| listener); |
| } |
| |
| public void removePropertyChangeListener(PropertyChangeListener listener) { |
| propertyChangeSupport.removePropertyChangeListener(listener); |
| } |
| |
| public void removePropertyChangeListener(String propertyName, |
| PropertyChangeListener listener) { |
| propertyChangeSupport.removePropertyChangeListener(propertyName, |
| listener); |
| } |
| |
| protected void firePropertyChange(String propertyName, Object oldValue, |
| Object newValue) { |
| propertyChangeSupport.firePropertyChange(propertyName, oldValue, |
| newValue); |
| } |
| } |
| |
| // The data model class. This is normally a persistent class of some sort. |
| static class Person extends AbstractModelObject { |
| // A property... |
| String name = "John Smith"; |
| |
| public Person(String name) { |
| this.name = name; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public void setName(String name) { |
| String oldValue = this.name; |
| this.name = name; |
| firePropertyChange("name", oldValue, name); |
| } |
| } |
| |
| // The View's model--the root of our Model graph for this particular GUI. |
| // |
| // Typically each View class has a corresponding ViewModel class. |
| // The ViewModel is responsible for getting the objects to edit from the |
| // data access tier. Since this snippet doesn't have any persistent objects |
| // ro retrieve, this ViewModel just instantiates a model object to edit. |
| static class ViewModel { |
| // The model to bind |
| private List people = new LinkedList(); |
| { |
| people.add(new Person("Steve Northover")); |
| people.add(new Person("Grant Gayed")); |
| people.add(new Person("Veronika Irvine")); |
| people.add(new Person("Mike Wilson")); |
| people.add(new Person("Christophe Cornu")); |
| people.add(new Person("Lynne Kues")); |
| people.add(new Person("Silenio Quarti")); |
| } |
| |
| public List getPeople() { |
| return people; |
| } |
| } |
| |
| /** |
| * Editing support that uses JFace Data Binding to control the editing |
| * lifecycle. The standard EditingSupport get/setValue(...) lifecycle is not |
| * used. |
| * |
| * @since 3.3 |
| */ |
| private static class InlineEditingSupport extends ObservableValueEditingSupport { |
| private CellEditor cellEditor; |
| |
| /** |
| * @param viewer |
| * @param dbc |
| */ |
| public InlineEditingSupport(ColumnViewer viewer, |
| DataBindingContext dbc) { |
| |
| super(viewer, dbc); |
| cellEditor = new TextCellEditor((Composite) viewer.getControl()); |
| } |
| |
| protected CellEditor getCellEditor(Object element) { |
| return cellEditor; |
| } |
| |
| protected IObservableValue doCreateCellEditorObservable( |
| CellEditor cellEditor) { |
| |
| return SWTObservables.observeText(cellEditor |
| .getControl(), SWT.Modify); |
| } |
| |
| protected IObservableValue doCreateElementObservable(Object element, |
| ViewerCell cell) { |
| return BeansObservables.observeValue(element, "name"); |
| } |
| } |
| |
| // The GUI view |
| static class View { |
| private ViewModel viewModel; |
| private Table committers; |
| private Label selectedCommitter; |
| |
| public View(ViewModel viewModel) { |
| this.viewModel = viewModel; |
| } |
| |
| public Shell createShell() { |
| // Build a UI |
| Display display = Display.getDefault(); |
| Shell shell = new Shell(display); |
| shell.setLayout(new FillLayout(SWT.VERTICAL)); |
| committers = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION); |
| committers.setLinesVisible(true); |
| |
| selectedCommitter = new Label(shell, SWT.NONE); |
| // Set up data binding. In an RCP application, the threading |
| // Realm |
| // will be set for you automatically by the Workbench. In an SWT |
| // application, you can do this once, wrpping your binding |
| // method call. |
| DataBindingContext bindingContext = new DataBindingContext(); |
| bindGUI(bindingContext); |
| |
| // Open and return the Shell |
| shell.setSize(100, 300); |
| shell.open(); |
| return shell; |
| } |
| |
| protected void bindGUI(DataBindingContext bindingContext) { |
| // Since we're using a JFace Viewer, we do first wrap our Table... |
| TableViewer peopleViewer = new TableViewer(committers); |
| TableViewerColumn column = new TableViewerColumn(peopleViewer, |
| SWT.NONE); |
| column.setEditingSupport(new InlineEditingSupport(peopleViewer, |
| bindingContext)); |
| column.getColumn().setWidth(100); |
| |
| // Create a standard content provider |
| ObservableListContentProvider peopleViewerContentProvider = new ObservableListContentProvider(); |
| peopleViewer.setContentProvider(peopleViewerContentProvider); |
| |
| // And a standard label provider that maps columns |
| IObservableMap[] attributeMaps = BeansObservables.observeMaps( |
| peopleViewerContentProvider.getKnownElements(), |
| Person.class, new String[] { "name" }); |
| peopleViewer.setLabelProvider(new ObservableMapLabelProvider( |
| attributeMaps)); |
| |
| // Now set the Viewer's input |
| peopleViewer.setInput(new WritableList(viewModel.getPeople(), |
| Person.class)); |
| |
| // bind selectedCommitter label to the name of the current selection |
| IObservableValue selection = ViewersObservables |
| .observeSingleSelection(peopleViewer); |
| bindingContext.bindValue(SWTObservables |
| .observeText(selectedCommitter), BeansObservables |
| .observeDetailValue(Realm.getDefault(), selection, "name", |
| String.class), null, null); |
| } |
| } |
| |
| } |