/* * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.tools.visualvm.modules.appui.welcome; import java.beans.PropertyChangeListener; import java.beans.PropertyChangeSupport; import java.util.prefs.Preferences; import org.openide.util.NbPreferences; /** * * @author S. Aubrecht */ public class WelcomeOptions { private static WelcomeOptions theInstance; private static final String PROP_SHOW_ON_STARTUP = "showOnStartup"; private PropertyChangeSupport propSupport; /** Creates a new instance of WelcomeOptions */ private WelcomeOptions() { } private Preferences prefs() { return NbPreferences.forModule(WelcomeOptions.class); } public static synchronized WelcomeOptions getDefault() { if( null == theInstance ) { theInstance = new WelcomeOptions(); } return theInstance; } public void setShowOnStartup( boolean show ) { boolean oldVal = isShowOnStartup(); prefs().putBoolean(PROP_SHOW_ON_STARTUP, show); if( null != propSupport ) propSupport.firePropertyChange( PROP_SHOW_ON_STARTUP, oldVal, show ); } public boolean isShowOnStartup() { return prefs().getBoolean(PROP_SHOW_ON_STARTUP, true); } public void addPropertyChangeListener( PropertyChangeListener l ) { if( null == propSupport ) propSupport = new PropertyChangeSupport( this ); propSupport.addPropertyChangeListener( l ); } public void removePropertyChangeListener( PropertyChangeListener l ) { if( null == propSupport ) return; propSupport.removePropertyChangeListener( l ); } }