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1 /*******************************************************************************
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2 * Copyright (c) 2005, 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 * Matthew Hall - bug 223123
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11 *******************************************************************************/
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12 module org.eclipse.jface.internal.databinding.provisional.viewers.ViewerLabelProvider;
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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.ArrayList;
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17 import java.util.Collection;
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18 import java.util.List;
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19
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20 import org.eclipse.core.databinding.util.Policy;
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21 import org.eclipse.core.runtime.IStatus;
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22 import org.eclipse.core.runtime.Status;
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23 import org.eclipse.jface.viewers.ILabelProvider;
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24 import org.eclipse.jface.viewers.ILabelProviderListener;
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25 import org.eclipse.jface.viewers.IViewerLabelProvider;
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26 import org.eclipse.jface.viewers.LabelProviderChangedEvent;
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27 import org.eclipse.jface.viewers.ViewerLabel;
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28 import org.eclipse.swt.graphics.Image;
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29
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30 /**
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31 * NON-API - Generic viewer label provider.
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32 * @since 1.1
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33 *
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34 */
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35 public class ViewerLabelProvider : IViewerLabelProvider,
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36 ILabelProvider {
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37
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38 private List listeners = new ArrayList();
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39
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40 /**
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41 * Subclasses should override this method. They should not call the base
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42 * class implementation.
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43 */
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44 public void updateLabel(ViewerLabel label, Object element) {
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45 label.setText(element.toString());
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46 }
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47
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48 protected final void fireChangeEvent(Collection changes) {
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49 final LabelProviderChangedEvent event = new LabelProviderChangedEvent(
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50 this, changes.toArray());
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51 ILabelProviderListener[] listenerArray = cast(ILabelProviderListener[]) listeners
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52 .toArray(new ILabelProviderListener[listeners.size()]);
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53 for (int i = 0; i < listenerArray.length; i++) {
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54 ILabelProviderListener listener = listenerArray[i];
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55 try {
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56 listener.labelProviderChanged(event);
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57 } catch (Exception e) {
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58 Policy.getLog().log(
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59 new Status(IStatus.ERROR, Policy.JFACE_DATABINDING, e
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60 .getLocalizedMessage(), e));
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61 }
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62 }
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63 }
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64
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65 public final Image getImage(Object element) {
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66 ViewerLabel label = new ViewerLabel("", null); //$NON-NLS-1$
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67 updateLabel(label, element);
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68 return label.getImage();
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69 }
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70
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71 public final String getText(Object element) {
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72 ViewerLabel label = new ViewerLabel("", null); //$NON-NLS-1$
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73 updateLabel(label, element);
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74 return label.getText();
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75 }
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76
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77 public void addListener(ILabelProviderListener listener) {
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78 listeners.add(listener);
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79 }
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80
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81 public void dispose() {
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82 listeners.clear();
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83 }
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84
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85 public final bool isLabelProperty(Object element, String property) {
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86 return true;
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87 }
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88
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89 public void removeListener(ILabelProviderListener listener) {
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90 listeners.remove(listener);
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91 }
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92
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93 }
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