| /******************************************************************************* |
| * Copyright (c) 2008 Marcelo Mayworm. 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: Marcelo Mayworm - initial API and implementation |
| * |
| ******************************************************************************/ |
| package org.eclipse.ecf.presence.ui; |
| |
| import java.util.List; |
| import org.eclipse.ecf.presence.search.IResultList; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| /** |
| * Content provider for multiple users viewer. This content provider implements |
| * an ITreeContentProvider suitable for use by tree viewers that accepts |
| * ITreeContentProviders as input. This class may be subclassed in order to |
| * customize the behavior/display of other content providers. |
| * @since 2.0 |
| * |
| */ |
| public class UserSearchContentProvider implements ITreeContentProvider { |
| |
| protected static Object[] EMPTY_ARRAY = new Object[0]; |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) |
| */ |
| public Object[] getChildren(Object parentElement) { |
| if (parentElement instanceof IResultList) { |
| return ((IResultList) parentElement).getResults().toArray(); |
| } |
| return EMPTY_ARRAY; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) |
| */ |
| public Object getParent(Object element) { |
| if (element == null) { |
| return null; |
| } |
| return element; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) |
| */ |
| public boolean hasChildren(Object element) { |
| if (element instanceof IResultList) { |
| IResultList list = (IResultList) element; |
| if (list.getResults().size() > 0) |
| return true; |
| } |
| return false; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| public Object[] getElements(Object inputElement) { |
| if (inputElement instanceof List) |
| return ((List) inputElement).toArray(); |
| |
| return null; |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IContentProvider#dispose() |
| */ |
| public void dispose() { |
| // do nothing |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, |
| * java.lang.Object, java.lang.Object) |
| */ |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| // do nothing |
| } |
| |
| } |