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comparison org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/provisional/viewers/ViewerLabelProvider.d @ 78:0a55d2d5a946

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Added file for databinding
author Frank Benoit <benoit@tionex.de>
date Tue, 14 Apr 2009 11:35:29 +0200
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children 6be48cf9f95c
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76:f05e6e8b2f2d 78:0a55d2d5a946
1 /*******************************************************************************
2 * Copyright (c) 2005, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Matthew Hall - bug 223123
11 *******************************************************************************/
12 module org.eclipse.jface.internal.databinding.provisional.viewers.ViewerLabelProvider;
13
14 import java.lang.all;
15
16 import java.util.ArrayList;
17 import java.util.Collection;
18 import java.util.List;
19
20 import org.eclipse.core.databinding.util.Policy;
21 import org.eclipse.core.runtime.IStatus;
22 import org.eclipse.core.runtime.Status;
23 import org.eclipse.jface.viewers.ILabelProvider;
24 import org.eclipse.jface.viewers.ILabelProviderListener;
25 import org.eclipse.jface.viewers.IViewerLabelProvider;
26 import org.eclipse.jface.viewers.LabelProviderChangedEvent;
27 import org.eclipse.jface.viewers.ViewerLabel;
28 import org.eclipse.swt.graphics.Image;
29
30 /**
31 * NON-API - Generic viewer label provider.
32 * @since 1.1
33 *
34 */
35 public class ViewerLabelProvider : IViewerLabelProvider,
36 ILabelProvider {
37
38 private List listeners = new ArrayList();
39
40 /**
41 * Subclasses should override this method. They should not call the base
42 * class implementation.
43 */
44 public void updateLabel(ViewerLabel label, Object element) {
45 label.setText(element.toString());
46 }
47
48 protected final void fireChangeEvent(Collection changes) {
49 final LabelProviderChangedEvent event = new LabelProviderChangedEvent(
50 this, changes.toArray());
51 ILabelProviderListener[] listenerArray = cast(ILabelProviderListener[]) listeners
52 .toArray(new ILabelProviderListener[listeners.size()]);
53 for (int i = 0; i < listenerArray.length; i++) {
54 ILabelProviderListener listener = listenerArray[i];
55 try {
56 listener.labelProviderChanged(event);
57 } catch (Exception e) {
58 Policy.getLog().log(
59 new Status(IStatus.ERROR, Policy.JFACE_DATABINDING, e
60 .getLocalizedMessage(), e));
61 }
62 }
63 }
64
65 public final Image getImage(Object element) {
66 ViewerLabel label = new ViewerLabel("", null); //$NON-NLS-1$
67 updateLabel(label, element);
68 return label.getImage();
69 }
70
71 public final String getText(Object element) {
72 ViewerLabel label = new ViewerLabel("", null); //$NON-NLS-1$
73 updateLabel(label, element);
74 return label.getText();
75 }
76
77 public void addListener(ILabelProviderListener listener) {
78 listeners.add(listener);
79 }
80
81 public void dispose() {
82 listeners.clear();
83 }
84
85 public final bool isLabelProperty(Object element, String property) {
86 return true;
87 }
88
89 public void removeListener(ILabelProviderListener listener) {
90 listeners.remove(listener);
91 }
92
93 }