Mercurial > projects > dwt-win
annotate dwt/custom/BusyIndicator.d @ 212:ab60f3309436
reverted the char[] to String and use the an alias.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 05 May 2008 00:12:38 +0200 |
| parents | 184ab53b7785 |
| children | fd9c62a2998e |
| rev | line source |
|---|---|
| 155 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2006 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwt.custom.BusyIndicator; | |
| 14 | |
| 15 | |
| 16 | |
| 17 import dwt.DWT; | |
| 18 import dwt.graphics.Cursor; | |
| 19 import dwt.widgets.Display; | |
| 20 import dwt.widgets.Shell; | |
|
197
184ab53b7785
Changes and fixes for jface
Frank Benoit <benoit@tionex.de>
parents:
155
diff
changeset
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21 import dwt.dwthelper.utils; |
| 155 | 22 import dwt.dwthelper.Runnable; |
| 23 | |
| 24 /** | |
| 25 * Support for showing a Busy Cursor during a long running process. | |
| 26 */ | |
| 27 public class BusyIndicator { | |
| 28 | |
| 29 static int nextBusyId = 1; | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
30 static const String BUSYID_NAME = "DWT BusyIndicator"; //$NON-NLS-1$ |
|
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
31 static const String BUSY_CURSOR = "DWT BusyIndicator Cursor"; //$NON-NLS-1$ |
| 155 | 32 |
| 33 /** | |
| 34 * Runs the given <code>Runnable</code> while providing | |
| 35 * busy feedback using this busy indicator. | |
| 36 * | |
| 37 * @param display the display on which the busy feedback should be | |
| 38 * displayed. If the display is null, the Display for the current | |
| 39 * thread will be used. If there is no Display for the current thread, | |
| 40 * the runnable code will be executed and no busy feedback will be displayed. | |
| 41 * @param runnable the runnable for which busy feedback is to be shown. | |
| 42 * Must not be null. | |
| 43 * | |
| 44 * @exception IllegalArgumentException <ul> | |
| 45 * <li>ERROR_NULL_ARGUMENT - if the runnable is null</li> | |
| 46 * </ul> | |
| 47 */ | |
| 48 | |
| 49 public static void showWhile(Display display, Runnable runnable) { | |
| 50 if (runnable is null) | |
| 51 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 52 if (display is null) { | |
| 53 display = Display.getCurrent(); | |
| 54 if (display is null) { | |
| 55 runnable.run(); | |
| 56 return; | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 Integer busyId = new Integer(nextBusyId); | |
| 61 nextBusyId++; | |
| 62 Cursor cursor = display.getSystemCursor(DWT.CURSOR_WAIT); | |
| 63 Shell[] shells = display.getShells(); | |
| 64 for (int i = 0; i < shells.length; i++) { | |
| 65 Integer id = cast(Integer)shells[i].getData(BUSYID_NAME); | |
| 66 if (id is null) { | |
| 67 shells[i].setCursor(cursor); | |
| 68 shells[i].setData(BUSYID_NAME, busyId); | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 try { | |
| 73 runnable.run(); | |
| 74 } finally { | |
| 75 shells = display.getShells(); | |
| 76 for (int i = 0; i < shells.length; i++) { | |
| 77 Integer id = cast(Integer)shells[i].getData(BUSYID_NAME); | |
| 78 if ( id !is null && id == busyId) { | |
| 79 shells[i].setCursor(null); | |
| 80 shells[i].setData(BUSYID_NAME, null); | |
| 81 } | |
| 82 } | |
| 83 } | |
| 84 } | |
| 85 } |