| /******************************************************************************* |
| * Copyright (c) 2005, 2012 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 |
| *******************************************************************************/ |
| package org.eclipse.bpel.ui.details.providers; |
| |
| import org.eclipse.bpel.ui.Messages; |
| import org.eclipse.jface.viewers.ILabelProvider; |
| import org.eclipse.jface.viewers.ILabelProviderListener; |
| import org.eclipse.swt.graphics.Image; |
| |
| |
| /** |
| * A label provider which handles null while delegating non-null objects to another |
| * label provider. Might be useful in conjunction with AddNullFilter. |
| */ |
| public class NullHandlingLabelProvider implements ILabelProvider { |
| |
| ILabelProvider inner; |
| |
| public NullHandlingLabelProvider(ILabelProvider inner) { |
| this.inner = inner; |
| } |
| |
| public void addListener(ILabelProviderListener listener) { |
| inner.addListener(listener); |
| } |
| |
| public void dispose() { |
| inner.dispose(); |
| } |
| |
| public Image getImage(Object element) { |
| if (element == null) return null; |
| return inner.getImage(element); |
| } |
| |
| public String getText(Object element) { |
| if (element == null) return Messages.NullHandlingLabelProvider____None____1; |
| return inner.getText(element); |
| } |
| |
| public boolean isLabelProperty(Object element, String property) { |
| if (element == null) return false; |
| return inner.isLabelProperty(element, property); |
| } |
| |
| public void removeListener(ILabelProviderListener listener) { |
| inner.removeListener(listener); |
| } |
| |
| @Override |
| public String toString() { |
| return "NullHandlingLabelProvider("+inner.toString()+")"; //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| } |