| /******************************************************************************* |
| * Copyright (c) 2003, 2013 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.ant.internal.ui.model; |
| |
| import java.util.List; |
| |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| public class AntModelContentProvider implements ITreeContentProvider { |
| |
| protected static final Object[] EMPTY_ARRAY = new Object[0]; |
| |
| @Override |
| public void dispose() { |
| // do nothing |
| } |
| |
| @Override |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| // do nothing |
| } |
| |
| @Override |
| public Object[] getChildren(Object parentNode) { |
| if (parentNode instanceof AntElementNode) { |
| AntElementNode parentElement = (AntElementNode) parentNode; |
| if (parentElement.hasChildren()) { |
| List<IAntElement> children = parentElement.getChildNodes(); |
| return children.toArray(); |
| } |
| } else if (parentNode instanceof IAntModel) { |
| return new Object[] { ((IAntModel) parentNode).getProjectNode() }; |
| } |
| return EMPTY_ARRAY; |
| } |
| |
| @Override |
| public Object getParent(Object aNode) { |
| AntElementNode tempElement = (AntElementNode) aNode; |
| return tempElement.getParentNode(); |
| } |
| |
| @Override |
| public boolean hasChildren(Object aNode) { |
| return ((AntElementNode) aNode).hasChildren(); |
| } |
| |
| @Override |
| public Object[] getElements(Object inputElement) { |
| if (inputElement instanceof IAntModel) { |
| AntProjectNode projectNode = ((IAntModel) inputElement).getProjectNode(); |
| if (projectNode == null) { |
| return new AntElementNode[0]; |
| } |
| |
| return new Object[] { projectNode }; |
| } |
| if (inputElement instanceof List) { |
| return ((List<?>) inputElement).toArray(); |
| } |
| if (inputElement instanceof Object[]) { |
| return (Object[]) inputElement; |
| } |
| return EMPTY_ARRAY; |
| } |
| } |