GNU Classpath (0.17) | ||
Frames | No Frames |
1: /* DefaultSingleSelectionModel.java -- 2: Copyright (C) 2002, 2004 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package javax.swing; 40: 41: import java.io.Serializable; 42: import java.util.EventListener; 43: 44: import javax.swing.event.ChangeEvent; 45: import javax.swing.event.ChangeListener; 46: import javax.swing.event.EventListenerList; 47: 48: /** 49: * DefaultSingleSelectionModel 50: * 51: * @author Andrew Selkirk 52: */ 53: public class DefaultSingleSelectionModel 54: implements SingleSelectionModel, Serializable 55: { 56: private static final long serialVersionUID = 3676229404753786004L; 57: 58: /** 59: * changeEvent 60: */ 61: protected transient ChangeEvent changeEvent = new ChangeEvent(this); 62: 63: /** 64: * listenerList 65: */ 66: protected EventListenerList listenerList = new EventListenerList(); 67: 68: /** 69: * index 70: */ 71: private int index = -1; 72: 73: /** 74: * Constructor DefaultSingleSelectionModel 75: */ 76: public DefaultSingleSelectionModel() 77: { 78: // Do nothing. 79: } 80: 81: /** 82: * getSelectedIndex 83: * @return int 84: */ 85: public int getSelectedIndex() 86: { 87: return index; 88: } 89: 90: /** 91: * setSelectedIndex 92: * @param index TODO 93: */ 94: public void setSelectedIndex(int index) 95: { 96: this.index = index; 97: fireStateChanged(); 98: } 99: 100: /** 101: * clearSelection 102: */ 103: public void clearSelection() 104: { 105: index = -1; 106: fireStateChanged(); 107: } 108: 109: /** 110: * isSelected 111: * @return boolean 112: */ 113: public boolean isSelected() 114: { 115: return index != -1; 116: } 117: 118: /** 119: * addChangeListener 120: * 121: * @param listener the listener to add 122: */ 123: public void addChangeListener(ChangeListener listener) 124: { 125: listenerList.add(ChangeListener.class, listener); 126: } 127: 128: /** 129: * removeChangeListener 130: * 131: * @param listener the listener to remove 132: */ 133: public void removeChangeListener(ChangeListener listener) 134: { 135: listenerList.remove(ChangeListener.class, listener); 136: } 137: 138: /** 139: * fireStateChanged 140: */ 141: protected void fireStateChanged() 142: { 143: ChangeListener[] listeners = getChangeListeners(); 144: 145: for (int i = 0; i < listeners.length; i++) 146: listeners[i].stateChanged(changeEvent); 147: } 148: 149: /** 150: * getListeners 151: * 152: * @param listenerClass the type fo listener 153: * 154: * @return an array of listeners 155: * 156: * @since 1.3 157: */ 158: public EventListener[] getListeners(Class listenerClass) 159: { 160: return listenerList.getListeners(listenerClass); 161: } 162: 163: /** 164: * getChangeListeners 165: * 166: * @since 1.4 167: */ 168: public ChangeListener[] getChangeListeners() 169: { 170: return (ChangeListener[]) getListeners(ChangeListener.class); 171: } 172: }
GNU Classpath (0.17) |