| /**************************************************************************** |
| * Copyright (c) 2004, 2007 Composent, Inc. 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: |
| * Composent, Inc. - initial API and implementation |
| *****************************************************************************/ |
| package org.eclipse.ecf.presence.ui; |
| |
| import java.util.*; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.ui.model.IWorkbenchAdapter; |
| |
| /** |
| * Content provider for multiple roster viewer. This content provider implements |
| * an IMultiRosterContentProvider 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. |
| * |
| */ |
| public class MultiRosterContentProvider implements ITreeContentProvider { |
| |
| protected List rosters = Collections.synchronizedList(new ArrayList()); |
| |
| protected Object input; |
| |
| protected IWorkbenchAdapter getAdapter(Object element) { |
| IWorkbenchAdapter adapter = null; |
| if (element instanceof IAdaptable) |
| adapter = (IWorkbenchAdapter) ((IAdaptable) element).getAdapter(IWorkbenchAdapter.class); |
| if (element != null && adapter == null) |
| adapter = (IWorkbenchAdapter) Platform.getAdapterManager().loadAdapter(element, IWorkbenchAdapter.class.getName()); |
| return adapter; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) |
| */ |
| public Object[] getChildren(Object parentElement) { |
| IWorkbenchAdapter adapter = getAdapter(parentElement); |
| return adapter == null ? new Object[0] : adapter.getChildren(parentElement); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) |
| */ |
| public Object getParent(Object element) { |
| IWorkbenchAdapter adapter = getAdapter(element); |
| return adapter != null ? adapter.getParent(element) : input; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) |
| */ |
| public boolean hasChildren(Object element) { |
| return getChildren(element).length > 0; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| public Object[] getElements(Object inputElement) { |
| if (inputElement instanceof List) { |
| input = inputElement; |
| Object[] elements = ((List) inputElement).toArray(); |
| for (int i = 0; i < elements.length; i++) { |
| MultiRosterAccount account = (MultiRosterAccount) elements[i]; |
| elements[i] = account.getRoster(); |
| } |
| return elements; |
| } |
| return new Object[0]; |
| } |
| |
| /* |
| * (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 |
| } |
| |
| } |