1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.uiautomator.tree; 18 19 20 import org.eclipse.jface.viewers.ITreeContentProvider; 21 import org.eclipse.jface.viewers.Viewer; 22 23 public class BasicTreeNodeContentProvider implements ITreeContentProvider { 24 25 private static final Object[] EMPTY_ARRAY = {}; 26 27 @Override 28 public void dispose() { 29 } 30 31 @Override 32 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { 33 } 34 35 @Override 36 public Object[] getElements(Object inputElement) { 37 return getChildren(inputElement); 38 } 39 40 @Override 41 public Object[] getChildren(Object parentElement) { 42 if (parentElement instanceof BasicTreeNode) { 43 return ((BasicTreeNode)parentElement).getChildren(); 44 } 45 return EMPTY_ARRAY; 46 } 47 48 @Override 49 public Object getParent(Object element) { 50 if (element instanceof BasicTreeNode) { 51 return ((BasicTreeNode)element).getParent(); 52 } 53 return null; 54 } 55 56 @Override 57 public boolean hasChildren(Object element) { 58 if (element instanceof BasicTreeNode) { 59 return ((BasicTreeNode) element).hasChild(); 60 } 61 return false; 62 } 63 } 64
