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/*
* $Id: DefaultUserNameStore.java 4147 2012-02-01 17:13:24Z kschaefe $
*
* Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx.auth;
import java.util.prefs.Preferences;
import org.jdesktop.beans.JavaBean;
/**
* Saves the user names in Preferences. Because any string could be part
* of the user name, for every user name that must be saved a new Preferences
* key/value pair must be stored.
*
* @author Bino George
* @author rbair
*/
@JavaBean
public class DefaultUserNameStore extends UserNameStore {
/**
* The key for one of the preferences
*/
private static final String USER_KEY = "usernames";
/**
*/
private static final String NUM_KEY = "usernames.length";
/**
* The preferences node
*/
private Preferences prefs;
/**
* Contains the user names. Since the list of user names is not
* frequently updated, there is no penalty in storing the values
* in an array.
*/
private String[] userNames;
/**
* Creates a new instance of DefaultUserNameStore
*/
public DefaultUserNameStore() {
userNames = new String[0];
}
/**
* Loads the user names from Preferences
*/
@Override
public void loadUserNames() {
initPrefs();
if (prefs != null) {
int n = prefs.getInt(NUM_KEY, 0);
String[] names = new String[n];
for (int i = 0; i < n; i++) {
names[i] = prefs.get(USER_KEY + "." + i, null);
}
setUserNames(names);
}
}
/**
* Saves the user names to Preferences
*/
@Override
public void saveUserNames() {
initPrefs();
if (prefs != null) {
prefs.putInt(NUM_KEY, userNames.length);
for (int i = 0; i < userNames.length; i++) {
prefs.put(USER_KEY + "." + i, userNames[i]);
}
}
}
/**
* {@inheritDoc}
*/
@Override
public String[] getUserNames() {
String[] copy = new String[userNames.length];
System.arraycopy(userNames, 0, copy, 0, userNames.length);
return copy;
}
/**
* {@inheritDoc}
*/
@Override
public void setUserNames(String[] userNames) {
userNames = userNames == null ? new String[0] : userNames;
String[] old = getUserNames();
this.userNames = userNames;
firePropertyChange("userNames", old, getUserNames());
}
/**
* Add a username to the store.
* @param name
*/
@Override
public void addUserName(String name) {
if (!containsUserName(name)) {
String[] newNames = new String[userNames.length + 1];
for (int i=0; i