1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171
/* * @(#)TreeSelectionEvent.java 1.28 05/11/17 * * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package javax.swing.event; import java.util.EventObject; import javax.swing.tree.TreePath; /** * An event that characterizes a change in the current * selection. The change is based on any number of paths. * TreeSelectionListeners will generally query the source of * the event for the new selected status of each potentially * changed row. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. * * @see TreeSelectionListener * @see javax.swing.tree.TreeSelectionModel * * @version 1.28 11/17/05 * @author Scott Violet */ public class TreeSelectionEvent extends EventObject { /** Paths this event represents. */ protected TreePath[] paths; /** For each path identifies if that path is in fact new. */ protected boolean[] areNew; /** leadSelectionPath before the paths changed, may be null. */ protected TreePath oldLeadSelectionPath; /** leadSelectionPath after the paths changed, may be null. */ protected TreePath newLeadSelectionPath; /** * Represents a change in the selection of a TreeSelectionModel. * paths identifies the paths that have been either added or * removed from the selection. * * @param source source of event * @param paths the paths that have changed in the selection */ public TreeSelectionEvent(Object source, TreePath[] paths, boolean[] areNew, TreePath oldLeadSelectionPath, TreePath newLeadSelectionPath) { super(source); this.paths = paths; this.areNew = areNew; this.oldLeadSelectionPath = oldLeadSelectionPath; this.newLeadSelectionPath = newLeadSelectionPath; } /** * Represents a change in the selection of a TreeSelectionModel. * path identifies the path that have been either added or * removed from the selection. * * @param source source of event * @param path the path that has changed in the selection * @param isNew whether or not the path is new to the selection, false * means path was removed from the selection. */ public TreeSelectionEvent(Object source, TreePath path, boolean isNew, TreePath oldLeadSelectionPath, TreePath newLeadSelectionPath) { super(source); paths = new TreePath[1]; paths[0] = path; areNew = new boolean[1]; areNew[0] = isNew; this.oldLeadSelectionPath = oldLeadSelectionPath; this.newLeadSelectionPath = newLeadSelectionPath; } /** * Returns the paths that have been added or removed from the * selection. */ public TreePath[] getPaths() { int numPaths; TreePath[] retPaths; numPaths = paths.length; retPaths = new TreePath[numPaths]; System.arraycopy(paths, 0, retPaths, 0, numPaths); return retPaths; } /** * Returns the first path element. */ public TreePath getPath() { return paths[0]; } /** * Returns true if the first path element has been added to the * selection, a return value of false means the first path has been * removed from the selection. */ public boolean isAddedPath() { return areNew[0]; } /** * Returns true if the path identified by path was added to the * selection. A return value of false means the path was in the * selection but is no longer in the selection. This will raise if * path is not one of the paths identified by this event. */ public boolean isAddedPath(TreePath path) { for(int counter = paths.length - 1; counter >= 0; counter--) if(paths[counter].equals(path)) return areNew[counter]; throw new IllegalArgumentException("path is not a path identified by the TreeSelectionEvent"); } /** * Returns true if the path identified by <code>index</code> was added to * the selection. A return value of false means the path was in the * selection but is no longer in the selection. This will raise if * index < 0 || >= <code>getPaths</code>.length. * * @since 1.3 */ public boolean isAddedPath(int index) { if (paths == null || index < 0 || index >= paths.length) { throw new IllegalArgumentException("index is beyond range of added paths identified by TreeSelectionEvent"); } return areNew[index]; } /** * Returns the path that was previously the lead path. */ public TreePath getOldLeadSelectionPath() { return oldLeadSelectionPath; } /** * Returns the current lead path. */ public TreePath getNewLeadSelectionPath() { return newLeadSelectionPath; } /** * Returns a copy of the receiver, but with the source being newSource. */ public Object cloneWithSource(Object newSource) { // Fix for IE bug - crashing return new TreeSelectionEvent(newSource, paths,areNew, oldLeadSelectionPath, newLeadSelectionPath); } }