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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet005MenuUpdater.d @ 90:6086085e153d

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Added databinding snippets. unmodified java sources.
author Frank Benoit <benoit@tionex.de>
date Sun, 19 Apr 2009 11:33:55 +0200
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children 5d5bd660917f
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6086085e153d Added databinding snippets. unmodified java sources.
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1 /*******************************************************************************
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2 * Copyright (c) 2006, 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 * Brad Reynolds - bug 116920
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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.Date;
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15 import java.util.Iterator;
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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.jface.databinding.swt.SWTObservables;
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20 import org.eclipse.jface.internal.databinding.provisional.swt.MenuUpdater;
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21 import org.eclipse.swt.SWT;
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22 import org.eclipse.swt.widgets.Display;
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23 import org.eclipse.swt.widgets.Menu;
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24 import org.eclipse.swt.widgets.MenuItem;
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25 import org.eclipse.swt.widgets.Shell;
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26
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27 /**
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28 */
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29 public class Snippet005MenuUpdater {
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30 public static void main(String[] args) {
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31 final Display display = new Display();
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32 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
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33 public void run() {
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34 Shell shell = new Shell(display);
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35
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36 final WritableList menuItemStrings = new WritableList();
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37 display.asyncExec(new Runnable() {
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38 public void run() {
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39 System.out.println("adding item");
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40 menuItemStrings.add(new Date().toString());
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41 display.timerExec(5000, this);
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42 }
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43 });
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44
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45 Menu bar = new Menu(shell, SWT.BAR);
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46 shell.setMenuBar(bar);
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47 MenuItem fileItem = new MenuItem(bar, SWT.CASCADE);
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48 fileItem.setText("&Test Menu");
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49 final Menu submenu = new Menu(shell, SWT.DROP_DOWN);
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50 fileItem.setMenu(submenu);
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51 new MenuUpdater(submenu) {
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52 protected void updateMenu() {
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53 System.out.println("updating menu");
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54 MenuItem[] items = submenu.getItems();
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55 int itemIndex = 0;
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56 for (Iterator it = menuItemStrings.iterator(); it
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57 .hasNext();) {
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58 MenuItem item;
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59 if (itemIndex < items.length) {
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60 item = items[itemIndex++];
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61 } else {
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62 item = new MenuItem(submenu, SWT.NONE);
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63 }
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64 String string = (String) it.next();
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65 item.setText(string);
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66 }
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67 while (itemIndex < items.length) {
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68 items[itemIndex++].dispose();
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69 }
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70 }
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71 };
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72
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73 shell.open();
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74
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75 // The SWT event loop
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76 while (!shell.isDisposed()) {
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77 if (!display.readAndDispatch()) {
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78 display.sleep();
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79 }
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80 }
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81 }
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82 });
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83 display.dispose();
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84 }
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85 }