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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet012CompositeUpdater.d @ 91:2755ef2c8ef8

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Fix compile for base type changes
author Frank Benoit <benoit@tionex.de>
date Sun, 19 Apr 2009 12:22:47 +0200
parents 6086085e153d
children 5d5bd660917f
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1 /*******************************************************************************
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2 * Copyright (c) 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 ******************************************************************************/
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11
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12 package org.eclipse.jface.examples.databinding.snippets;
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13
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14 import java.util.Timer;
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15 import java.util.TimerTask;
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16
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17 import org.eclipse.core.databinding.observable.Realm;
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18 import org.eclipse.core.databinding.observable.list.WritableList;
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19 import org.eclipse.core.databinding.observable.value.WritableValue;
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20 import org.eclipse.jface.databinding.swt.SWTObservables;
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21 import org.eclipse.jface.internal.databinding.provisional.swt.CompositeUpdater;
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22 import org.eclipse.jface.layout.GridDataFactory;
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23 import org.eclipse.jface.layout.GridLayoutFactory;
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24 import org.eclipse.swt.SWT;
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25 import org.eclipse.swt.events.SelectionAdapter;
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26 import org.eclipse.swt.widgets.Button;
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27 import org.eclipse.swt.widgets.Composite;
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28 import org.eclipse.swt.widgets.Display;
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29 import org.eclipse.swt.widgets.Label;
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30 import org.eclipse.swt.widgets.Shell;
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31 import org.eclipse.swt.widgets.Widget;
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32
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33 /**
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34 * @since 3.2
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35 *
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36 */
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37 public class Snippet012CompositeUpdater {
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38
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39 public static void main(String[] args) {
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40 final Display display = new Display();
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41 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
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42 public void run() {
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43 Shell shell = new Shell(display);
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44
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45 final WritableList list = new WritableList();
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46
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47 Button button = new Button(shell, SWT.PUSH);
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48 button.setText("add");
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49 button.addSelectionListener(new SelectionAdapter() {
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50 public void widgetSelected(
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51 org.eclipse.swt.events.SelectionEvent e) {
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52 list.add(0, new Counter());
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53 }
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54 });
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55
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56 final Composite composite = new Composite(shell, SWT.None);
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57
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58 new CompositeUpdater(composite, list) {
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59 protected Widget createWidget(int index) {
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60 Label label = new Label(composite, SWT.BORDER);
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61 //requestLayout(label);
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62 return label;
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63 }
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64
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65 protected void updateWidget(Widget widget, Object element) {
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66 ((Label) widget).setText(((Counter) element).getValue()
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67 + "");
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68 requestLayout((Label)widget);
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69 }
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70 };
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71 GridLayoutFactory.fillDefaults().numColumns(10).generateLayout(composite);
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72
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73 GridDataFactory.fillDefaults().grab(true, true).applyTo(
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74 composite);
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75
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76 GridLayoutFactory.fillDefaults().generateLayout(shell);
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77 shell.pack();
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78 shell.open();
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79 while (!shell.isDisposed()) {
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80 if (!display.readAndDispatch())
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81 display.sleep();
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82 }
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83 }
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84 });
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85 display.dispose();
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86 }
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87
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88 static Timer timer = new Timer(true);
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89
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90 static class Counter extends WritableValue {
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91 Counter() {
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92 super(new Integer(0), Integer.class);
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93 scheduleIncrementTask();
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94 }
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95
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96 private void scheduleIncrementTask() {
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97 timer.schedule(new TimerTask() {
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98 public void run() {
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99 // we have to get onto the realm (UI thread) to perform the
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100 // increment
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101 getRealm().asyncExec(new Runnable() {
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102 public void run() {
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103 Integer currentVal = (Integer) getValue();
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104 setValue(new Integer(currentVal.intValue() + 1));
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105 }
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106 });
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107 scheduleIncrementTask();
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108 }
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109 }, 1000);
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110 }
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111 }
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112 }