| /******************************************************************************* |
| * Copyright (c) 2005, 2020 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.jface.viewers; |
| |
| /** |
| * <p> |
| * A content provider that expects every element to be a <code>TreeNode</code>. |
| * Most methods delegate to <code>TreeNode</code>. <code>dispose()</code> |
| * and <code>inputChanged(Viewer, Object, Object)</code> do nothing by |
| * default. |
| * </p> |
| * <p> |
| * This class and all of its methods may be overridden or extended. |
| * </p> |
| * |
| * @since 3.2 |
| * @see org.eclipse.jface.viewers.TreeNode |
| */ |
| public class TreeNodeContentProvider implements ITreeContentProvider { |
| |
| @Override |
| public Object[] getChildren(final Object parentElement) { |
| final TreeNode node = (TreeNode) parentElement; |
| return node.getChildren(); |
| } |
| |
| @Override |
| public Object[] getElements(final Object inputElement) { |
| if (inputElement instanceof TreeNode[]) { |
| return (TreeNode[]) inputElement; |
| } |
| return new Object[0]; |
| } |
| |
| @Override |
| public Object getParent(final Object element) { |
| final TreeNode node = (TreeNode) element; |
| return node.getParent(); |
| } |
| |
| @Override |
| public boolean hasChildren(final Object element) { |
| final TreeNode node = (TreeNode) element; |
| return node.hasChildren(); |
| } |
| |
| } |
| |