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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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11
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12 module org.eclipse.core.databinding.observable.value.ValueChangeEvent;
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13
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14 import java.lang.all;
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15
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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 change event describing a change of an {@link IObservableValue}
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21 * object's current value.
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22 *
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23 * @since 1.0
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24 *
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25 */
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26 public class ValueChangeEvent : ObservableEvent {
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27
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28 /**
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29 *
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30 */
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31 private static final long serialVersionUID = 2305345286999701156L;
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32
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33 static final Object TYPE = new Object();
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34
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35 /**
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36 * Description of the change to the source observable value. Listeners must
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37 * not change this field.
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38 */
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39 public ValueDiff diff;
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40
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41 /**
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42 * Creates a new value change event.
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43 *
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44 * @param source
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45 * the source observable value
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46 * @param diff
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47 * the value change
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48 */
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49 public this(IObservableValue source, ValueDiff diff) {
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50 super(source);
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51 this.diff = diff;
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52 }
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53
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54 /**
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55 * Returns the observable value from which this event originated.
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56 *
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57 * @return returns the observable value from which this event originated
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58 */
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59 public IObservableValue getObservableValue() {
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60 return cast(IObservableValue) source;
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61 }
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62
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63 protected void dispatch(IObservablesListener listener) {
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64 (cast(IValueChangeListener) listener).handleValueChange(this);
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65 }
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66
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67 protected Object getListenerType() {
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68 return TYPE;
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69 }
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70
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71 }
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