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/*******************************************************************************
* Copyright (c) 2006, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Brad Reynolds - bug 164247
* Brad Reynolds - bug 164134
*******************************************************************************/
package org.eclipse.jface.databinding.viewers;
import java.util.Set;
import org.eclipse.core.databinding.observable.map.IMapChangeListener;
import org.eclipse.core.databinding.observable.map.IObservableMap;
import org.eclipse.core.databinding.observable.map.MapChangeEvent;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.swt.graphics.Image;
/**
* @since 1.1
*
*/
public class ObservableMapLabelProvider extends LabelProvider
implements ILabelProvider, ITableLabelProvider {
private final IObservableMap[] attributeMaps;
private IMapChangeListener mapChangeListener = new IMapChangeListener() {
public void handleMapChange(MapChangeEvent event) {
Set affectedElements = event.diff.getChangedKeys();
LabelProviderChangedEvent newEvent = new LabelProviderChangedEvent(
ObservableMapLabelProvider.this, affectedElements
.toArray());
fireLabelProviderChanged(newEvent);
}
};
/**
* @param attributeMap
*/
public ObservableMapLabelProvider(IObservableMap attributeMap) {
this(new IObservableMap[] { attributeMap });
}
/**
* @param attributeMaps
*/
public ObservableMapLabelProvider(IObservableMap[] attributeMaps) {
this.attributeMaps = attributeMaps;
for (int i = 0; i < attributeMaps.length; i++) {
attributeMaps[i].addMapChangeListener(mapChangeListener);
}
}
public void dispose() {
for (int i = 0; i < attributeMaps.length; i++) {
attributeMaps[i].removeMapChangeListener(mapChangeListener);
}
super.dispose();
}
public Image getImage(Object element) {
return null;
}
public String getText(Object element) {
return getColumnText(element, 0);
}
public Image getColumnImage(Object element, int columnIndex) {
return null;
}
public String getColumnText(Object element, int columnIndex) {
if (columnIndex < attributeMaps.length) {
Object result = attributeMaps[columnIndex].get(element);
return result == null ? "" : result.toString(); //$NON-NLS-1$
}
return null;
}
}
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