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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2004 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 * D Port:
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11 * Thomas Demmer <t_demmer AT web DOT de>
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12 *******************************************************************************/
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13 module clipboard.Snippet122;
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14 /*
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15 * Clipboard example snippet: enable/disable menu depending on clipboard content availability
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16 *
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17 * For a list of all SWT example snippets see
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18 * http://www.eclipse.org/swt/snippets/
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19 *
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20 * @since 3.0
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21 */
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22 import dwt.DWT;
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23 import dwt.dnd.Clipboard;
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24 import dwt.dnd.TextTransfer;
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25 import dwt.dnd.Transfer;
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26 import dwt.dnd.TransferData;
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27 import dwt.events.MenuAdapter;
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28 import dwt.events.MenuEvent;
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29 import dwt.events.SelectionAdapter;
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30 import dwt.events.SelectionListener;
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31 import dwt.layout.FillLayout;
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32 import dwt.widgets.Display;
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33 import dwt.widgets.Menu;
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34 import dwt.widgets.MenuItem;
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35 import dwt.widgets.Shell;
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36 import dwt.widgets.Text;
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37
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38 import dwt.dwthelper.utils;
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39
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40 public static void main(String[] args) {
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41 Display display = new Display();
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42 Clipboard cb = new Clipboard(display);
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43 Shell shell = new Shell(display);
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44 shell.setLayout(new FillLayout());
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45 Text text = new Text(shell, DWT.BORDER | DWT.MULTI | DWT.WRAP);
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46 Menu menu = new Menu(shell, DWT.POP_UP);
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47 MenuItem copyItem = new MenuItem(menu, DWT.PUSH);
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48 copyItem.setText("Copy");
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49 copyItem.addSelectionListener(new class() SelectionAdapter{
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50 public void widgetSelected(SelectionEvent e) {
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51 String selection = text.getSelectionText();
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52 if (selection.length == 0) return;
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53 Object[] data = [ new ArrayWrapperString(selection) ];
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54 Transfer[] types = [ TextTransfer.getInstance() ];
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55 cb.setContents(data, types);
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56 }
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57 });
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58 MenuItem pasteItem = new MenuItem(menu, DWT.PUSH);
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59 pasteItem.setText ("Paste");
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60 pasteItem.addSelectionListener(new class() SelectionAdapter{
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61 public void widgetSelected(SelectionEvent e) {
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62 String string = stringcast(cb.getContents(TextTransfer.getInstance()));
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63 if (string !is null) text.insert(string);
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64 }
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65 });
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66 menu.addMenuListener(new class() MenuAdapter{
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67 public void menuShown(MenuEvent e) {
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68 // is copy valid?
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69 String selection = text.getSelectionText();
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70 copyItem.setEnabled(selection.length > 0);
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71 // is paste valid?
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72 TransferData[] available = cb.getAvailableTypes();
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73 bool enabled = false;
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74 for (int i = 0; i < available.length; i++) {
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75 if (TextTransfer.getInstance().isSupportedType(available[i])) {
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76 enabled = true;
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77 break;
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78 }
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79 }
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80 pasteItem.setEnabled(enabled);
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81 }
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82 });
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83
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84 text.setMenu (menu);
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85 shell.setSize(200, 200);
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86 shell.open();
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87 while (!shell.isDisposed()) {
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88 if (!display.readAndDispatch())
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89 display.sleep();
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90 }
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91 cb.dispose();
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92 display.dispose();
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93 }
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