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annotate dwtx/jface/bindings/SchemeEvent.d @ 16:e0f0aaf75edd

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PopupDialog, bindings and actions
author Frank Benoit <benoit@tionex.de>
date Tue, 01 Apr 2008 08:00:31 +0200
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1 /*******************************************************************************
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2 * Copyright (c) 2004, 2006 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 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13
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14 module dwtx.jface.bindings.SchemeEvent;
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16 import dwtx.jface.bindings.Scheme;
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18 import dwtx.core.commands.common.AbstractNamedHandleEvent;
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19
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20 import dwt.dwthelper.utils;
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21
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22 /**
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23 * An instance of this class describes changes to an instance of
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24 * <code>IScheme</code>.
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25 * <p>
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26 * This class is not intended to be extended by clients.
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27 * </p>
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28 *
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29 * @since 3.1
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30 * @see ISchemeListener#schemeChanged(SchemeEvent)
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31 */
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32 public final class SchemeEvent : AbstractNamedHandleEvent {
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33
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34 /**
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35 * The bit used to represent whether the scheme has changed its parent.
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36 */
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37 private static const int CHANGED_PARENT_ID = LAST_USED_BIT << 1;
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38
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39 /**
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40 * The scheme that has changed; this value is never <code>null</code>.
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41 */
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42 private const Scheme scheme;
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43
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44 /**
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45 * Creates a new instance of this class.
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46 *
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47 * @param scheme
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48 * the instance of the interface that changed; must not be
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49 * <code>null</code>.
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50 * @param definedChanged
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51 * true, iff the defined property changed.
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52 * @param nameChanged
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53 * true, iff the name property changed.
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54 * @param descriptionChanged
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55 * <code>true</code> if the description property changed;
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56 * <code>false</code> otherwise.
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57 * @param parentIdChanged
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58 * true, iff the parentId property changed.
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59 */
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60 public this(Scheme scheme, bool definedChanged,
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61 bool nameChanged, bool descriptionChanged,
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62 bool parentIdChanged) {
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63 super(definedChanged, descriptionChanged, nameChanged);
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64
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65 if (scheme is null) {
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66 throw new NullPointerException();
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67 }
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68 this.scheme = scheme;
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69
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70 if (parentIdChanged) {
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71 changedValues |= CHANGED_PARENT_ID;
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72 }
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73 }
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74
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75 /**
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76 * Returns the instance of the scheme that changed.
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77 *
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78 * @return the instance of the scheme that changed. Guaranteed not to be
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79 * <code>null</code>.
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80 */
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81 public final Scheme getScheme() {
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82 return scheme;
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83 }
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84
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85 /**
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86 * Returns whether or not the parentId property changed.
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87 *
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88 * @return true, iff the parentId property changed.
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89 */
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90 public final bool isParentIdChanged() {
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91 return ((changedValues & CHANGED_PARENT_ID) !is 0);
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92 }
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93 }