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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 164247
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11 * Brad Reynolds - bug 164134
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12 *******************************************************************************/
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13
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14 module org.eclipse.jface.databinding.viewers.ObservableMapLabelProvider;
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15
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16 import java.lang.all;
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17
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18 import java.util.Set;
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19
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20 import org.eclipse.core.databinding.observable.map.IMapChangeListener;
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21 import org.eclipse.core.databinding.observable.map.IObservableMap;
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22 import org.eclipse.core.databinding.observable.map.MapChangeEvent;
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23 import org.eclipse.jface.viewers.ILabelProvider;
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24 import org.eclipse.jface.viewers.ITableLabelProvider;
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25 import org.eclipse.jface.viewers.LabelProvider;
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26 import org.eclipse.jface.viewers.LabelProviderChangedEvent;
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27 import org.eclipse.swt.graphics.Image;
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28
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29 /**
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30 * @since 1.1
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31 *
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32 */
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33 public class ObservableMapLabelProvider : LabelProvider
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34 , ILabelProvider, ITableLabelProvider {
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35
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36 private final IObservableMap[] attributeMaps;
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37
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38 private IMapChangeListener mapChangeListener = new class() IMapChangeListener {
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39 public void handleMapChange(MapChangeEvent event) {
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40 Set affectedElements = event.diff.getChangedKeys();
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41 LabelProviderChangedEvent newEvent = new LabelProviderChangedEvent(
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42 this.outer, affectedElements
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43 .toArray());
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44 fireLabelProviderChanged(newEvent);
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45 }
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46 };
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47
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48 /**
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49 * @param attributeMap
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50 */
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51 public this(IObservableMap attributeMap) {
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52 this([ cast(IObservableMap)attributeMap ]);
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53 }
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54
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55 /**
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56 * @param attributeMaps
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57 */
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58 public this(IObservableMap[] attributeMaps) {
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59 System.arraycopy(attributeMaps, 0, this.attributeMaps = attributeMaps, 0, attributeMaps.length);
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60 for (int i = 0; i < attributeMaps.length; i++) {
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61 attributeMaps[i].addMapChangeListener(mapChangeListener);
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62 }
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63 }
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64
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65 public void dispose() {
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66 for (int i = 0; i < attributeMaps.length; i++) {
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67 attributeMaps[i].removeMapChangeListener(mapChangeListener);
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68 }
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69 super.dispose();
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70 }
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71
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72 public Image getImage(Object element) {
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73 return null;
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74 }
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75
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76 public String getText(Object element) {
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77 return getColumnText(element, 0);
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78 }
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79
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80 public Image getColumnImage(Object element, int columnIndex) {
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81 return null;
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82 }
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83
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84 public String getColumnText(Object element, int columnIndex) {
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85 if (columnIndex < attributeMaps.length) {
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86 Object result = attributeMaps[columnIndex].get(element);
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87 return result is null ? "" : result.toString(); //$NON-NLS-1$
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88 }
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89 return null;
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90 }
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91
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92 }
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