| /******************************************************************************* |
| * Copyright (c) 2008, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Simon Scholz <simon.scholz@vogella.com> - Bug 434283 |
| ******************************************************************************/ |
| |
| package org.eclipse.jface.examples.databinding.snippets; |
| |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.jface.databinding.swt.DisplayRealm; |
| import org.eclipse.jface.databinding.swt.ISWTObservableValue; |
| import org.eclipse.jface.databinding.swt.WidgetProperties; |
| import org.eclipse.jface.internal.databinding.provisional.swt.ControlUpdater; |
| import org.eclipse.jface.layout.GridLayoutFactory; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.custom.StackLayout; |
| import org.eclipse.swt.layout.GridLayout; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Group; |
| import org.eclipse.swt.widgets.Label; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Text; |
| |
| /** |
| * @since 3.2 |
| * |
| */ |
| public class Snippet023ConditionalVisibility { |
| public static void main(String[] args) { |
| Display display = new Display(); |
| final Shell shell = new Shell(display); |
| shell.setLayout(new GridLayout(1, false)); |
| |
| Realm.runWithDefault(DisplayRealm.getRealm(display), |
| () -> new Snippet023ConditionalVisibility().createControls(shell)); |
| |
| shell.pack(); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| display.dispose(); |
| } |
| |
| Text text; |
| Text toText; |
| Text fromText; |
| |
| /** |
| * @param shell |
| */ |
| private void createControls(Shell shell) { |
| Composite composite = new Composite(shell, SWT.NONE); |
| Group radioGroup = new Group(composite, SWT.NONE); |
| radioGroup.setText("Type"); |
| Button textButton = new Button(radioGroup, SWT.RADIO); |
| textButton.setText("Text"); |
| Button rangeButton = new Button(radioGroup, SWT.RADIO); |
| rangeButton.setText("Range"); |
| GridLayoutFactory.swtDefaults().generateLayout(radioGroup); |
| |
| final Composite oneOfTwo = new Composite(composite, SWT.NONE); |
| final StackLayout stackLayout = new StackLayout(); |
| oneOfTwo.setLayout(stackLayout); |
| |
| final Group rangeGroup = new Group(oneOfTwo, SWT.NONE); |
| rangeGroup.setText("Range"); |
| Label fromLabel = new Label(rangeGroup, SWT.NONE); |
| fromLabel.setText("From:"); |
| fromText = new Text(rangeGroup, SWT.SINGLE | SWT.LEAD | SWT.BORDER); |
| |
| Label toLabel = new Label(rangeGroup, SWT.NONE); |
| toLabel.setText("To:"); |
| toText = new Text(rangeGroup, SWT.SINGLE | SWT.LEAD | SWT.BORDER); |
| GridLayoutFactory.swtDefaults().numColumns(2) |
| .generateLayout(rangeGroup); |
| |
| final Group textGroup = new Group(oneOfTwo, SWT.NONE); |
| textGroup.setText("Text"); |
| Label label = new Label(textGroup, SWT.NONE); |
| label.setText("Text:"); |
| text = new Text(textGroup, SWT.SINGLE | SWT.LEAD | SWT.BORDER); |
| GridLayoutFactory.swtDefaults().numColumns(2).generateLayout(textGroup); |
| |
| GridLayoutFactory.swtDefaults().numColumns(2).generateLayout(composite); |
| |
| final ISWTObservableValue rangeSelected = WidgetProperties.selection().observe(rangeButton); |
| final ISWTObservableValue textSelected = WidgetProperties.selection().observe(textButton); |
| |
| // Note that ControlUpdater is not API. |
| new ControlUpdater(oneOfTwo) { |
| @Override |
| protected void updateControl() { |
| if (((Boolean) rangeSelected.getValue()).booleanValue()) { |
| stackLayout.topControl = rangeGroup; |
| oneOfTwo.layout(); |
| } else if (((Boolean) textSelected.getValue()).booleanValue()) { |
| stackLayout.topControl = textGroup; |
| oneOfTwo.layout(); |
| } |
| } |
| }; |
| } |
| } |