1 /* 2 * Copyright (C) 2007 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 org.apache.harmony.xml.dom; 18 19 import org.w3c.dom.Node; 20 21 /** 22 * Provides a straightforward implementation of the corresponding W3C DOM 23 * interface. The class is used internally only, thus only notable members that 24 * are not in the original interface are documented (the W3C docs are quite 25 * extensive). Hope that's ok. 26 * <p> 27 * Some of the fields may have package visibility, so other classes belonging to 28 * the DOM implementation can easily access them while maintaining the DOM tree 29 * structure. 30 * <p> 31 * This class represents a Node that has a parent Node, but no children. 32 */ 33 public abstract class LeafNodeImpl extends NodeImpl { 34 35 // Maintained by InnerNodeImpl. 36 InnerNodeImpl parent; 37 38 // Maintained by InnerNodeImpl. 39 int index; 40 41 LeafNodeImpl(DocumentImpl document) { 42 super(document); 43 } 44 45 public Node getNextSibling() { 46 if (parent == null || index + 1 >= parent.children.size()) { 47 return null; 48 } 49 50 return parent.children.get(index + 1); 51 } 52 53 public Node getParentNode() { 54 return parent; 55 } 56 57 public Node getPreviousSibling() { 58 if (parent == null || index == 0) { 59 return null; 60 } 61 62 return parent.children.get(index - 1); 63 } 64 65 boolean isParentOf(Node node) { 66 return false; 67 } 68 69 } 70
