Java tutorial
/******************************************************************************* * Copyright (c) 2008 Matthew Hall 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: * Matthew Hall - initial API and implementation (bug 248956) *******************************************************************************/ package org.eclipse.nebula.snippets.radiogroup; import java.beans.PropertyChangeListener; import java.beans.PropertyChangeSupport; import org.eclipse.core.databinding.beans.BeanProperties; import org.eclipse.core.databinding.observable.Realm; import org.eclipse.core.databinding.observable.list.IObservableList; import org.eclipse.core.databinding.observable.list.WritableList; import org.eclipse.core.databinding.property.value.IValueProperty; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.databinding.viewers.ViewerSupport; import org.eclipse.jface.dialogs.InputDialog; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.window.Window; import org.eclipse.nebula.jface.viewer.radiogroup.RadioGroupViewer; import org.eclipse.nebula.widgets.radiogroup.RadioGroup; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class RadioGroupViewerSnippet01 { public static void main(String[] arrrrgs) { final Display display = new Display(); Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() { public void run() { Shell shell = createShell(); shell.open(); while (!shell.isDisposed()) if (!display.readAndDispatch()) display.sleep(); display.dispose(); } }); } private static Shell createShell() { final IObservableList people = createModel(); final Shell shell = new Shell(); shell.setLayout(new GridLayout(3, false)); Group actionGroup = new Group(shell, SWT.NONE); actionGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false)); actionGroup.setText(" Actions "); RowLayout rowLayout = new RowLayout(SWT.VERTICAL); rowLayout.fill = true; actionGroup.setLayout(rowLayout); Button addPerson = new Button(actionGroup, SWT.PUSH); addPerson.setText("Add person"); Button renamePerson = new Button(actionGroup, SWT.PUSH); renamePerson.setText("Rename person"); Button removePerson = new Button(actionGroup, SWT.PUSH); removePerson.setText("Remove person"); Button refresh = new Button(actionGroup, SWT.PUSH); refresh.setText("Refresh"); Group group = new Group(shell, SWT.NONE); group.setText(" Radio Group Viewer "); group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false)); group.setLayout(new FillLayout()); final RadioGroupViewer radioGroupViewer = new RadioGroupViewer(new RadioGroup(group, SWT.VERTICAL)); Group eventGroup = new Group(shell, SWT.NONE); eventGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); eventGroup.setText(" Events "); eventGroup.setLayout(new FillLayout()); final Text events = new Text(eventGroup, SWT.MULTI | SWT.READ_ONLY | SWT.V_SCROLL | SWT.H_SCROLL | SWT.BORDER); // Bind UI addPerson.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { InputDialog dialog = new InputDialog(shell, "Add person", "Enter name", "<name>", null); if (dialog.open() == Window.OK) { Person person = new Person(dialog.getValue()); people.add(person); } } }); renamePerson.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { IStructuredSelection selection = (IStructuredSelection) radioGroupViewer.getSelection(); if (!selection.isEmpty()) { Person person = (Person) selection.getFirstElement(); InputDialog dialog = new InputDialog(shell, "Rename person", "Enter new name", person.getName(), null); if (dialog.open() == Window.OK) { person.setName(dialog.getValue()); } } } }); removePerson.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { IStructuredSelection selection = (IStructuredSelection) radioGroupViewer.getSelection(); if (!selection.isEmpty()) { Person person = (Person) selection.getFirstElement(); if (MessageDialog.openConfirm(shell, "Remove person", "Remove person " + person.getName() + "?")) { people.remove(person); } } } }); refresh.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { radioGroupViewer.refresh(); } }); IValueProperty nameProp = BeanProperties.value(Person.class, "name"); ViewerSupport.bind(radioGroupViewer, people, nameProp); radioGroupViewer.addPostSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { events.append(event.toString() + "\n"); events.append("\tselection = " + ((IStructuredSelection) event.getSelection()).getFirstElement() + "\n\n"); } }); return shell; } private static IObservableList createModel() { final IObservableList radioItems = new WritableList(); radioItems.add(new Person("Tom")); radioItems.add(new Person("Dick")); radioItems.add(new Person("Harry")); return radioItems; } static class Person { private String name; private PropertyChangeSupport changeSupport = new PropertyChangeSupport(this); Person(String name) { this.name = name; } public String getName() { return name; } public void setName(String name) { changeSupport.firePropertyChange("name", this.name, this.name = name); } public void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) { changeSupport.addPropertyChangeListener(propertyName, listener); } public void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) { changeSupport.removePropertyChangeListener(propertyName, listener); } public void addPropertyChangeListener(PropertyChangeListener listener) { changeSupport.addPropertyChangeListener(listener); } public void removePropertyChangeListener(PropertyChangeListener listener) { changeSupport.removePropertyChangeListener(listener); } @Override public String toString() { return "Person[name=\"" + name + "\"]"; } } }