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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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81
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13 import org.eclipse.core.databinding.observable.value.ValueDiff;
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14 import org.eclipse.core.databinding.observable.value.IValueChangeListener;
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15 import org.eclipse.core.databinding.observable.value.IObservableValue;
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78
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16
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17 import java.lang.all;
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18
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19 import org.eclipse.core.databinding.observable.IObservablesListener;
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20 import org.eclipse.core.databinding.observable.ObservableEvent;
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21
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22 /**
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23 * Value change event describing a change of an {@link IObservableValue}
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24 * object's current value.
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25 *
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26 * @since 1.0
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27 *
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28 */
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29 public class ValueChangeEvent : ObservableEvent {
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30
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31 /**
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32 *
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33 */
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34 private static const long serialVersionUID = 2305345286999701156L;
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35
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85
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36 static const Object TYPE;
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37 static this(){
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38 TYPE = new Object();
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39 }
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78
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40
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41 /**
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42 * Description of the change to the source observable value. Listeners must
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43 * not change this field.
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44 */
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45 public ValueDiff diff;
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46
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47 /**
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48 * Creates a new value change event.
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49 *
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50 * @param source
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51 * the source observable value
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52 * @param diff
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53 * the value change
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54 */
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55 public this(IObservableValue source, ValueDiff diff) {
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56 super(source);
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57 this.diff = diff;
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58 }
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59
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60 /**
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61 * Returns the observable value from which this event originated.
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62 *
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63 * @return returns the observable value from which this event originated
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64 */
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65 public IObservableValue getObservableValue() {
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66 return cast(IObservableValue) source;
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67 }
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68
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69 protected void dispatch(IObservablesListener listener) {
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70 (cast(IValueChangeListener) listener).handleValueChange(this);
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71 }
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72
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73 protected Object getListenerType() {
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74 return TYPE;
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75 }
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76
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77 }
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