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1 /*******************************************************************************
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2 * Copyright (c) 2006, 2008 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 * Brad Reynolds - bug 164653
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11 * Matthew Hall - bug 118516
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12 *******************************************************************************/
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13
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14 module org.eclipse.core.databinding.observable.AbstractObservable;
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81
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15 import org.eclipse.core.databinding.observable.IChangeListener;
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16 import org.eclipse.core.databinding.observable.ChangeEvent;
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17 import org.eclipse.core.databinding.observable.Realm;
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18 import org.eclipse.core.databinding.observable.IStaleListener;
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19 import org.eclipse.core.databinding.observable.IObservable;
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20 import org.eclipse.core.databinding.observable.StaleEvent;
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21 import org.eclipse.core.databinding.observable.ChangeManager;
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78
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22
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23 import java.lang.all;
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24
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25 import org.eclipse.core.runtime.Assert;
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26 import org.eclipse.core.runtime.AssertionFailedException;
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27
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28 /**
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29 * @since 1.0
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30 */
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31 public abstract class AbstractObservable : ChangeManager , IObservable {
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32
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33 /**
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34 * @param realm
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35 */
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36 public this(Realm realm) {
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37 super(realm);
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38 }
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39
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40 public synchronized void addChangeListener(IChangeListener listener) {
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41 addListener(ChangeEvent.TYPE, listener);
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42 }
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43
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44 public synchronized void removeChangeListener(IChangeListener listener) {
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45 removeListener(ChangeEvent.TYPE, listener);
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46 }
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47
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48 public synchronized void addStaleListener(IStaleListener listener) {
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49 addListener(StaleEvent.TYPE, listener);
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50 }
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51
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52 public synchronized void removeStaleListener(IStaleListener listener) {
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53 removeListener(StaleEvent.TYPE, listener);
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54 }
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55
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56 protected void fireChange() {
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57 checkRealm();
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58 fireEvent(new ChangeEvent(this));
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59 }
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60
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61 protected void fireStale() {
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62 checkRealm();
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63 fireEvent(new StaleEvent(this));
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64 }
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65
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66 /**
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67 *
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68 */
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69 public synchronized void dispose() {
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70 super.dispose();
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71 }
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72
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73 /**
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74 * Asserts that the realm is the current realm.
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75 *
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76 * @see Realm#isCurrent()
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77 * @throws AssertionFailedException if the realm is not the current realm
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78 */
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79 protected void checkRealm() {
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80 Assert.isTrue(getRealm().isCurrent(),
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81 "This operation must be run within the observable's realm"); //$NON-NLS-1$
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82 }
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83 }
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