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1 /*******************************************************************************
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2 * Copyright (c) 2006 The Pampered Chef, Inc. 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 * The Pampered Chef, Inc. - initial API and implementation
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10 ******************************************************************************/
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11
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12 module org.eclipse.jface.internal.databinding.provisional.swt.AbstractSWTVetoableValue;
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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.Realm;
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17 import org.eclipse.core.databinding.observable.value.AbstractVetoableValue;
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18 import org.eclipse.jface.databinding.swt.ISWTObservableValue;
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19 import org.eclipse.jface.databinding.swt.SWTObservables;
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20 import org.eclipse.swt.events.DisposeEvent;
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21 import org.eclipse.swt.events.DisposeListener;
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22 import org.eclipse.swt.widgets.Widget;
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85
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23 import org.eclipse.core.databinding.observable.value.IValueChangeListener;
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78
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24
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25 /**
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26 * NON-API - An abstract superclass for vetoable values that gurantees that the
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27 * observable will be disposed when the control to which it is attached is
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28 * disposed.
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29 *
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30 * @since 1.1
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31 */
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32 public abstract class AbstractSWTVetoableValue : AbstractVetoableValue , ISWTObservableValue {
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33 public override Object getValue(){
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34 return super.getValue();
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35 }
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36 public override void setValue( Object v ){
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37 super.setValue(v);
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38 }
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39 public void addValueChangeListener(IValueChangeListener listener) {
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40 super.addValueChangeListener(listener);
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41 }
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42 public void removeValueChangeListener(IValueChangeListener listener) {
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43 super.removeValueChangeListener(listener);
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44 }
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45
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46 private final Widget widget;
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47
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48 /**
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49 * Standard constructor for an SWT VetoableValue. Makes sure that
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50 * the observable gets disposed when the SWT widget is disposed.
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51 *
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52 * @param widget
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53 */
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54 protected this(Widget widget) {
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55 this(SWTObservables.getRealm(widget.getDisplay()), widget);
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56 }
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57
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58 /**
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59 * Constructs a new instance for the provided <code>realm</code> and <code>widget</code>.
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60 *
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61 * @param realm
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62 * @param widget
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63 * @since 1.2
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64 */
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65 protected this(Realm realm, Widget widget) {
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85
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66 disposeListener = new _DisposeListener();
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78
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67 super(realm);
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68 this.widget = widget;
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69 if (widget is null) {
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70 throw new IllegalArgumentException("The widget parameter is null."); //$NON-NLS-1$
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71 }
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72 widget.addDisposeListener(disposeListener);
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73 }
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74
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85
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75 private DisposeListener disposeListener;
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76 class _DisposeListener : DisposeListener {
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78
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77 public void widgetDisposed(DisposeEvent e) {
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78 this.outer.dispose();
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79 }
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80 };
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81
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82 /**
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83 * @return Returns the widget.
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84 */
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85 public Widget getWidget() {
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86 return widget;
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87 }
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88 }
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