| /******************************************************************************* |
| * Copyright (c) 2007 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.ITreeContentProvider; |
| import org.eclipse.jpt.ui.jface.DelegatingContentAndLabelProvider; |
| import org.eclipse.jpt.ui.jface.ItemLabelProviderFactory; |
| import org.eclipse.jpt.ui.jface.TreeItemContentProvider; |
| import org.eclipse.jpt.ui.jface.TreeItemContentProviderFactory; |
| |
| /** |
| * Extension of {@link DelegatingContentAndLabelProvider} that provides an extension |
| * to provide tree content |
| */ |
| public class DelegatingTreeContentAndLabelProvider extends DelegatingContentAndLabelProvider |
| implements ITreeContentProvider |
| { |
| public DelegatingTreeContentAndLabelProvider( |
| TreeItemContentProviderFactory treeItemContentProviderFactory) { |
| super(treeItemContentProviderFactory); |
| } |
| |
| public DelegatingTreeContentAndLabelProvider( |
| TreeItemContentProviderFactory treeItemContentProviderFactory, |
| ItemLabelProviderFactory itemLabelProviderFactory) { |
| super(treeItemContentProviderFactory, itemLabelProviderFactory); |
| } |
| |
| |
| protected TreeItemContentProvider itemContentProvider(Object item) { |
| return (TreeItemContentProvider) super.itemContentProvider(item); |
| } |
| |
| public Object[] getChildren(Object parentElement) { |
| TreeItemContentProvider provider = itemContentProvider(parentElement); |
| return (provider == null) ? new Object[0] : provider.getChildren(); |
| } |
| |
| public Object getParent(Object element) { |
| TreeItemContentProvider provider = itemContentProvider(element); |
| return (provider == null) ? null : provider.getParent(); |
| } |
| |
| public boolean hasChildren(Object element) { |
| TreeItemContentProvider provider = itemContentProvider(element); |
| return (provider == null) ? false : provider.hasChildren(); |
| } |
| } |