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1 /*******************************************************************************
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2 * Copyright (c) 2008 Matthew Hall 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 * Matthew Hall - initial API and implementation (bug 124684)
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10 ******************************************************************************/
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11
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12 module org.eclipse.jface.internal.databinding.viewers.CheckboxViewerCheckedElementsObservableSet;
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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 java.util.Arrays;
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17 import java.util.Set;
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18
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19 import org.eclipse.core.databinding.observable.Realm;
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20 import org.eclipse.jface.databinding.viewers.IViewerObservableSet;
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21 import org.eclipse.jface.viewers.CheckboxTableViewer;
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22 import org.eclipse.jface.viewers.CheckboxTreeViewer;
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23 import org.eclipse.jface.viewers.StructuredViewer;
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24 import org.eclipse.jface.viewers.Viewer;
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25
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26 /**
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27 * An observable set that tracks the checked elements in a CheckboxTableViewer
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28 * or CheckboxTreeViewer
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29 *
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30 * @since 1.2
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31 */
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32 public class CheckboxViewerCheckedElementsObservableSet :
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33 CheckableCheckedElementsObservableSet , IViewerObservableSet {
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34 private StructuredViewer viewer;
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35
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36 /**
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37 * Constructs a new instance on the given realm and checkable.
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38 *
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39 * @param realm
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40 * the observable's realm
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41 * @param viewer
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42 * the CheckboxTableViewer viewer to track.
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43 * @param elementType
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44 * type of elements in the set
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45 */
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46 public this(Realm realm,
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47 CheckboxTableViewer viewer, Object elementType) {
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48 super(realm, viewer, elementType, createElementSet(viewer));
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49 this.viewer = viewer;
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50 }
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51
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52 /**
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53 * Constructs a new instance on the given realm and checkable.
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54 *
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55 * @param realm
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56 * the observable's realm
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57 * @param viewer
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58 * the CheckboxTreeViewer viewer to track.
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59 * @param elementType
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60 * type of elements in the set
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61 */
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62 public this(Realm realm,
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63 CheckboxTreeViewer viewer, Object elementType) {
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64 super(realm, viewer, elementType, createElementSet(viewer));
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65 this.viewer = viewer;
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66 }
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67
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68 Set createDiffSet() {
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69 return ViewerElementSet.withComparer(viewer.getComparer());
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70 }
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71
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72 private static Set createElementSet(CheckboxTableViewer viewer) {
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73 Set set = ViewerElementSet.withComparer(viewer.getComparer());
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74 set.addAll(Arrays.asList(viewer.getCheckedElements()));
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75 return set;
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76 }
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77
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78 private static Set createElementSet(CheckboxTreeViewer viewer) {
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79 Set set = ViewerElementSet.withComparer(viewer.getComparer());
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80 set.addAll(Arrays.asList(viewer.getCheckedElements()));
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81 return set;
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82 }
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83
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84 public Viewer getViewer() {
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85 return viewer;
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86 }
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87
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88 public synchronized void dispose() {
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89 viewer = null;
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90 super.dispose();
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91 }
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92 }
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