| /******************************************************************************* |
| * Copyright (c) 2005, 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 |
| *******************************************************************************/ |
| |
| 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 { |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IContentProvider#dispose() |
| */ |
| public void dispose() { |
| // Do nothing |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) |
| */ |
| public Object[] getChildren(final Object parentElement) { |
| final TreeNode node = (TreeNode) parentElement; |
| return node.getChildren(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| public Object[] getElements(final Object inputElement) { |
| if (inputElement instanceof TreeNode[]) { |
| return (TreeNode[]) inputElement; |
| } |
| return new Object[0]; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) |
| */ |
| public Object getParent(final Object element) { |
| final TreeNode node = (TreeNode) element; |
| return node.getParent(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) |
| */ |
| public boolean hasChildren(final Object element) { |
| final TreeNode node = (TreeNode) element; |
| return node.hasChildren(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, |
| * java.lang.Object, java.lang.Object) |
| */ |
| public void inputChanged(final Viewer viewer, final Object oldInput, |
| final Object newInput) { |
| // Do nothing |
| } |
| } |
| |