1 /* DirectoryNode.java -- Structure for maintaining the cache directory tree. 2 Copyright (C) 2010 Red Hat, Inc. 3 4 This file is part of IcedTea. 5 6 IcedTea is free software; you can redistribute it and/or 7 modify it under the terms of the GNU General Public License as published by 8 the Free Software Foundation, version 2. 9 10 IcedTea is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with IcedTea; see the file COPYING. If not, write to 17 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 02110-1301 USA. 19 20 Linking this library statically or dynamically with other modules is 21 making a combined work based on this library. Thus, the terms and 22 conditions of the GNU General Public License cover the whole 23 combination. 24 25 As a special exception, the copyright holders of this library give you 26 permission to link this library with independent modules to produce an 27 executable, regardless of the license terms of these independent 28 modules, and to copy and distribute the resulting executable under 29 terms of your choice, provided that you also meet, for each linked 30 independent module, the terms and conditions of the license of that 31 module. An independent module is a module which is not derived from 32 or based on this library. If you modify this library, you may extend 33 this exception to your version of the library, but you are not 34 obligated to do so. If you do not wish to do so, delete this 35 exception statement from your version. 36 */ 37 package net.sourceforge.jnlp.cache; 38 39 import java.io.File; 40 import java.util.ArrayList; 41 42 public class DirectoryNode { 43 private String name; 44 private File path; 45 private ArrayList<DirectoryNode> childNodes; 46 private DirectoryNode parent = null; 47 private File infoFile; 48 49 /** 50 * Create a new instance of DirectoryNode. 51 * 52 * @param name Name representing this node. 53 * @param absPathToNode Absolute path to this node given as a String. 54 * @param parent The parent node. 55 */ DirectoryNode(String name, String absPathToNode, DirectoryNode parent)56 public DirectoryNode(String name, String absPathToNode, DirectoryNode parent) { 57 this(name, new File(absPathToNode), parent); 58 } 59 60 /** 61 * Create a new instance of DirectoryNode. 62 * 63 * @param name Name representing this node. 64 * @param absPathToNode Absolute path to this node as a File. 65 * @param parent The parent node. 66 */ DirectoryNode(String name, File absPathToNode, DirectoryNode parent)67 public DirectoryNode(String name, File absPathToNode, DirectoryNode parent) { 68 this(name, absPathToNode, null, parent); 69 } 70 71 /** 72 * Create a new instance of DirectoryNode. 73 * 74 * @param name Name representing this node. 75 * @param absPathToNode Absolute path to this node given as a File. 76 * @param childNodes List of children nodes. 77 * @param parent The parent node. 78 */ DirectoryNode(String name, File absPathToNode, ArrayList<DirectoryNode> childNodes, DirectoryNode parent)79 public DirectoryNode(String name, File absPathToNode, ArrayList<DirectoryNode> childNodes, DirectoryNode parent) { 80 this.name = name; 81 this.path = absPathToNode; 82 this.childNodes = childNodes; 83 if (this.childNodes == null) 84 this.childNodes = new ArrayList<DirectoryNode>(); 85 this.parent = parent; 86 if (!isDir()) 87 this.infoFile = new File(this.getFile().getAbsolutePath().concat(".info")); 88 } 89 90 /** 91 * Append the given node to the list of child nodes. 92 * 93 * @param node Node to be appended. 94 */ addChild(DirectoryNode node)95 public void addChild(DirectoryNode node) { 96 try { 97 childNodes.add(node); 98 } catch (NullPointerException e) { 99 this.childNodes = new ArrayList<DirectoryNode>(); 100 this.childNodes.add(node); 101 } 102 } 103 104 /** 105 * Removes the node specified. 106 * 107 * @param node Node to be removed from the list of children 108 * @return true if this list of children contained the specified element 109 */ removeChild(DirectoryNode node)110 public boolean removeChild(DirectoryNode node) { 111 return this.childNodes.remove(node); 112 } 113 114 /** 115 * Retrieve the name of this node. 116 * 117 * @return Name of this node. 118 */ getName()119 public String getName() { 120 return this.name; 121 } 122 toString()123 public String toString() { 124 return this.name; 125 } 126 127 /** 128 * Retrieve the file associated with this node. 129 * 130 * @return File that is associated with this node. 131 */ getFile()132 public File getFile() { 133 return path; 134 } 135 136 /** 137 * Retrieve the parent node. 138 * 139 * @return DirectoryNode representing the parent of the current node. 140 */ getParent()141 public DirectoryNode getParent() { 142 return parent; 143 } 144 145 /** 146 * Retrieves the list of child nodes. 147 * 148 * @return ArrayList of type DirectoryNode containing all the child nodes. 149 */ getChildren()150 public ArrayList<DirectoryNode> getChildren() { 151 return this.childNodes; 152 } 153 154 /** 155 * Check if this node is a directory. 156 * 157 * @return True if node is directory. 158 */ isDir()159 public boolean isDir() { 160 return path.isDirectory(); 161 } 162 getInfoFile()163 public File getInfoFile() { 164 return this.infoFile; 165 } 166 167 } 168