HttpProxySettings


1   /*
2    * The contents of this file are subject to the terms of the Common Development
3    * and Distribution License (the License). You may not use this file except in
4    * compliance with the License.
5    *
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7    * or http://www.netbeans.org/cddl.txt.
8    *
9    * When distributing Covered Code, include this CDDL Header Notice in each file
10   * and include the License file at http://www.netbeans.org/cddl.txt.
11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   *
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.modules.welcome.content;
21  
22  import java.beans.PropertyChangeListener  ;
23  import java.beans.PropertyChangeSupport  ;
24  import java.util.prefs.PreferenceChangeEvent  ;
25  import java.util.prefs.PreferenceChangeListener  ;
26  import java.util.prefs.Preferences  ;
27  import org.netbeans.api.options.OptionsDisplayer;
28  import org.openide.util.NbPreferences;
29  
30  /**
31   *
32   * @author S. Aubrecht
33   */
34  class HttpProxySettings {
35  
36      private static HttpProxySettings theInstance;
37      private static Preferences   proxySettingsNode;
38  
39      private PropertyChangeSupport   propertySupport = new PropertyChangeSupport  ( this );
40  
41      public static final String   PROXY_SETTINGS = "ProxySettings"; // NOI18N
42      
43      /** Creates a new instance of HttpProxySettings */
44      private HttpProxySettings() {
45          initProxyMethodsMaybe();
46      }
47  
48      public static HttpProxySettings getDefault() {
49          if( null == theInstance ) {
50              theInstance = new HttpProxySettings();
51          }
52          return theInstance;
53      }
54  
55      public void addPropertyChangeListener( PropertyChangeListener   l ) {
56          propertySupport.addPropertyChangeListener( l );
57      }
58  
59      public void removePropertyChangeListener( PropertyChangeListener   l ) {
60          propertySupport.removePropertyChangeListener( l );
61      }
62  
63      public void showConfigurationDialog() {
64          OptionsDisplayer.getDefault().open( "General" );//NOI18N
65      }
66  
67      private static synchronized void initProxyMethodsMaybe() {
68          proxySettingsNode = NbPreferences.root ().node ("/org/netbeans/core");
69          assert proxySettingsNode != null;
70          proxySettingsNode.addPreferenceChangeListener (new PreferenceChangeListener   (){
71              public void preferenceChange (PreferenceChangeEvent   evt) {
72                  if (evt.getKey ().startsWith ("proxy") || evt.getKey ().startsWith ("useProxy")) {
73                      getDefault ().propertySupport.firePropertyChange (PROXY_SETTINGS, null, getDefault());
74                  }
75              }
76          });
77      }
78  }
79
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