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annotate org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/value/ValueChangingEvent.d @ 96:b74ac5dfcc06

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package to module and java.lang.all import
author Frank Benoit <benoit@tionex.de>
date Tue, 21 Apr 2009 11:03:33 +0200
parents 6208d4f6a277
children c86eb8b3098e
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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 ******************************************************************************/
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12 module org.eclipse.core.databinding.observable.value.ValueChangingEvent;
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13
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14 import java.lang.all;
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16 import org.eclipse.core.databinding.observable.IObservablesListener;
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17 import org.eclipse.core.databinding.observable.ObservableEvent;
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18
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19 /**
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20 * Value changing event describing a pending change of an
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21 * {@link IObservableValue} object's current value. Listeners can veto the
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22 * pending change by setting {@link #veto} to <code>true</code>.
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23 *
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24 * @since 1.0
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25 *
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26 */
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27 public class ValueChangingEvent : ObservableEvent {
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28
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29 /**
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30 *
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31 */
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32 private static final long serialVersionUID = 2305345286999701156L;
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33
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34 static final Object TYPE = new Object();
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35
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36 /**
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37 * Description of the change to the source observable value. Listeners must
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38 * not change this field.
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39 */
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40 public ValueDiff diff;
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41
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42 /**
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43 * Flag for vetoing this change. Default value is <code>false</code>, can
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44 * be set to <code>true</code> by listeners to veto this change.
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45 */
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46 public bool veto = false;
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47
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48 /**
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49 * Creates a new value changing event.
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50 *
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51 * @param source
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52 * the source observable value
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53 * @param diff
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54 * the value change
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55 */
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56 public this(IObservableValue source, ValueDiff diff) {
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57 super(source);
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58 this.diff = diff;
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59 }
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60
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61 /**
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62 * @return the observable value from which this event originated
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63 */
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64 public IObservableValue getObservableValue() {
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65 return cast(IObservableValue) source;
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66 }
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67
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68 protected void dispatch(IObservablesListener listener) {
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69 (cast(IValueChangingListener) listener).handleValueChanging(this);
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70 }
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71
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72 protected Object getListenerType() {
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73 return TYPE;
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74 }
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75
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76 }