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      1 /*
      2  * Copyright (C) 2009 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings.vpn;
     18 
     19 import com.android.settings.R;
     20 
     21 import android.content.Context;
     22 import android.net.vpn.L2tpProfile;
     23 import android.preference.CheckBoxPreference;
     24 import android.preference.EditTextPreference;
     25 import android.preference.Preference;
     26 import android.preference.PreferenceGroup;
     27 
     28 /**
     29  * The class for editing {@link L2tpProfile}.
     30  */
     31 class L2tpEditor extends VpnProfileEditor {
     32     private CheckBoxPreference mSecret;
     33     private SecretHandler mSecretHandler;
     34 
     35     public L2tpEditor(L2tpProfile p) {
     36         super(p);
     37     }
     38 
     39     @Override
     40     protected void loadExtraPreferencesTo(PreferenceGroup subpanel) {
     41         Context c = subpanel.getContext();
     42         subpanel.addPreference(createSecretPreference(c));
     43         subpanel.addPreference(createSecretStringPreference(c));
     44 
     45         L2tpProfile profile = (L2tpProfile) getProfile();
     46     }
     47 
     48     @Override
     49     public String validate() {
     50         String result = super.validate();
     51         if (!mSecret.isChecked()) return result;
     52 
     53         return ((result != null) ? result : mSecretHandler.validate());
     54     }
     55 
     56     private Preference createSecretPreference(Context c) {
     57         final L2tpProfile profile = (L2tpProfile) getProfile();
     58         CheckBoxPreference secret = mSecret = new CheckBoxPreference(c);
     59         boolean enabled = profile.isSecretEnabled();
     60         setCheckBoxTitle(secret, R.string.vpn_l2tp_secret);
     61         secret.setChecked(enabled);
     62         setSecretSummary(secret, enabled);
     63         secret.setOnPreferenceChangeListener(
     64                 new Preference.OnPreferenceChangeListener() {
     65                     public boolean onPreferenceChange(
     66                             Preference pref, Object newValue) {
     67                         boolean enabled = (Boolean) newValue;
     68                         profile.setSecretEnabled(enabled);
     69                         mSecretHandler.getPreference().setEnabled(enabled);
     70                         setSecretSummary(mSecret, enabled);
     71                         return true;
     72                     }
     73                 });
     74         return secret;
     75     }
     76 
     77     private Preference createSecretStringPreference(Context c) {
     78         SecretHandler sHandler = mSecretHandler = new SecretHandler(c,
     79                 R.string.vpn_l2tp_secret_string_title,
     80                 R.string.vpn_l2tp_secret) {
     81             @Override
     82             protected String getSecretFromProfile() {
     83                 return ((L2tpProfile) getProfile()).getSecretString();
     84             }
     85 
     86             @Override
     87             protected void saveSecretToProfile(String secret) {
     88                 ((L2tpProfile) getProfile()).setSecretString(secret);
     89             }
     90         };
     91         Preference pref = sHandler.getPreference();
     92         pref.setEnabled(mSecret.isChecked());
     93         return pref;
     94     }
     95 
     96     private void setSecretSummary(CheckBoxPreference secret, boolean enabled) {
     97         Context c = secret.getContext();
     98         String formatString = c.getString(enabled
     99                 ? R.string.vpn_is_enabled
    100                 : R.string.vpn_is_disabled);
    101         secret.setSummary(String.format(
    102                 formatString, c.getString(R.string.vpn_l2tp_secret)));
    103     }
    104 }
    105