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/*******************************************************************************
* Copyright (c) 2006, 2008 Oracle. 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:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.ui.internal.jface;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.swt.graphics.Image;
/**
* Null implementation of the ILabelProvider interface.
* Implemented as a singleton.
*/
public final class NullLabelProvider
implements ILabelProvider
{
public static final NullLabelProvider INSTANCE = new NullLabelProvider();
public static ILabelProvider instance() {
return INSTANCE;
}
/**
* Ensure a single instance.
*/
private NullLabelProvider() {
super();
}
public Image getImage(Object element) {
return null;
}
public String getText(Object element) {
return null;
}
public void addListener(ILabelProviderListener listener) {
// do nothing
}
public void dispose() {
// do nothing
}
public boolean isLabelProperty(Object element, String property) {
return false;
}
public void removeListener(ILabelProviderListener listener) {
// do nothing
}
}
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