| /******************************************************************************* |
| * Copyright (c) 2010 Boeing. |
| * 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: |
| * Boeing - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ote.ui.message.tree; |
| |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| public class MessageContentProvider implements ITreeContentProvider { |
| private Viewer viewer; |
| private RootNode rootInput = null; |
| |
| @Override |
| public Object[] getChildren(Object parentElement) { |
| assert parentElement instanceof AbstractTreeNode; |
| return ((AbstractTreeNode) parentElement).getChildren().toArray(); |
| } |
| |
| @Override |
| public Object getParent(Object element) { |
| assert element instanceof AbstractTreeNode; |
| return ((AbstractTreeNode) element).getParent(); |
| } |
| |
| @Override |
| public boolean hasChildren(Object element) { |
| assert element instanceof AbstractTreeNode; |
| return ((AbstractTreeNode) element).hasChildren(); |
| } |
| |
| @Override |
| public Object[] getElements(Object inputElement) { |
| if (inputElement == null) { |
| return new Object[0]; |
| } |
| return getChildren(inputElement); |
| } |
| |
| @Override |
| public void dispose() { |
| // required to implement by IContentProvider |
| } |
| |
| public void clear() { |
| if (rootInput != null) { |
| rootInput.removeAll(); |
| if (viewer != null) { |
| viewer.refresh(); |
| } |
| } |
| } |
| |
| public void refresh() { |
| viewer.refresh(); |
| } |
| |
| @Override |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| this.viewer = viewer; |
| if (oldInput != null) { |
| ((RootNode) oldInput).removeAll(); |
| } |
| rootInput = (RootNode) newInput; |
| } |
| } |