| /************************************************************************************************************ |
| * Copyright (c) 2007 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 180746) |
| * Boris Bokowski, IBM - initial API and implementation |
| ***********************************************************************************************************/ |
| package org.eclipse.jface.examples.databinding.snippets; |
| |
| import org.eclipse.core.databinding.DataBindingContext; |
| import org.eclipse.core.databinding.observable.Observables; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.jface.databinding.swt.ISWTObservableValue; |
| import org.eclipse.jface.databinding.swt.SWTObservables; |
| import org.eclipse.jface.internal.databinding.provisional.swt.ControlUpdater; |
| import org.eclipse.jface.layout.GridDataFactory; |
| import org.eclipse.jface.resource.FontDescriptor; |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.jface.resource.LocalResourceManager; |
| import org.eclipse.jface.resource.ResourceManager; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.layout.GridLayout; |
| 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.Text; |
| |
| public class Snippet015DelayTextModifyEvents { |
| |
| private static void createControls(Shell shell) { |
| final Label field1 = createLabel(shell, SWT.NONE, "Field 1 "); |
| |
| Text text1 = new Text(shell, SWT.BORDER); |
| GridDataFactory.fillDefaults().grab(true, false).hint(200, SWT.DEFAULT) |
| .applyTo(text1); |
| createLabel(shell, SWT.NONE, "200ms delay"); |
| |
| final Label field2 = createLabel(shell, SWT.NONE, "Field 2 "); |
| |
| Text text2 = new Text(shell, SWT.BORDER); |
| GridDataFactory.fillDefaults().grab(true, false).hint(200, SWT.DEFAULT) |
| .applyTo(text2); |
| |
| createLabel(shell, SWT.NONE, "1000ms delay"); |
| |
| final ISWTObservableValue delayed1 = SWTObservables.observeDelayedValue(200, |
| SWTObservables.observeText(text1, SWT.Modify)); |
| final ISWTObservableValue delayed2 = SWTObservables.observeDelayedValue(1000, |
| SWTObservables.observeText(text2, SWT.Modify)); |
| |
| // (In a real application,you would want to dispose the resource manager |
| // when you are done with it) |
| ResourceManager resourceManager = new LocalResourceManager(JFaceResources.getResources()); |
| final Font shellFont = shell.getFont(); |
| final Font italicFont = resourceManager.createFont(FontDescriptor.createFrom( |
| shellFont).setStyle(SWT.ITALIC)); |
| |
| final IObservableValue stale1 = Observables.observeStale(delayed1); |
| new ControlUpdater(field2) { |
| protected void updateControl() { |
| boolean stale = ((Boolean)stale1.getValue()).booleanValue(); |
| field2.setFont(stale ? italicFont : shellFont); |
| } |
| }; |
| |
| final IObservableValue stale2 = Observables.observeStale(delayed2); |
| new ControlUpdater(field1) { |
| protected void updateControl() { |
| boolean stale = ((Boolean)stale2.getValue()).booleanValue(); |
| field1.setFont(stale ? italicFont : shellFont); |
| } |
| }; |
| |
| String info = "Pending changes are applied immediately if the observed control loses focus"; |
| GridDataFactory.fillDefaults().span(3, 1).applyTo( |
| createLabel(shell, SWT.WRAP, info)); |
| |
| DataBindingContext dbc = new DataBindingContext(); |
| |
| dbc.bindValue(delayed1, delayed2, null, null); |
| } |
| |
| private static Label createLabel(Composite parent, int style, String text) { |
| Label label = new Label(parent, style); |
| label.setText(text); |
| return label; |
| } |
| |
| public static void main(String[] args) { |
| final Display display = new Display(); |
| |
| Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() { |
| public void run() { |
| Shell shell = new Shell(); |
| shell.setLayout(new GridLayout(3, false)); |
| |
| createControls(shell); |
| |
| shell.pack(); |
| shell.open(); |
| while (!shell.isDisposed()) |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| |
| }); |
| |
| display.dispose(); |
| } |
| |
| } |