Home | History | Annotate | Download | only in wifi 
      1 /*
      2  * Copyright (C) 2010 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.wifi;
     18 
     19 import android.app.AlertDialog;
     20 import android.content.Context;
     21 import android.content.DialogInterface;
     22 import android.net.wifi.WifiConfiguration;
     23 import android.net.wifi.WifiConfiguration.AuthAlgorithm;
     24 import android.net.wifi.WifiConfiguration.KeyMgmt;
     25 import android.net.wifi.WifiManager;
     26 import android.os.Bundle;
     27 import android.text.Editable;
     28 import android.text.InputType;
     29 import android.text.TextWatcher;
     30 import android.util.Log;
     31 import android.view.View;
     32 import android.widget.AdapterView;
     33 import android.widget.ArrayAdapter;
     34 import android.widget.CheckBox;
     35 import android.widget.EditText;
     36 import android.widget.Spinner;
     37 import android.widget.TextView;
     38 
     39 import com.android.settings.R;
     40 
     41 import java.nio.charset.Charset;
     42 
     43 /**
     44  * Dialog to configure the SSID and security settings
     45  * for Access Point operation
     46  */
     47 public class WifiApDialog extends AlertDialog implements View.OnClickListener,
     48         TextWatcher, AdapterView.OnItemSelectedListener {
     49 
     50     static final int BUTTON_SUBMIT = DialogInterface.BUTTON_POSITIVE;
     51 
     52     private final DialogInterface.OnClickListener mListener;
     53 
     54     public static final int OPEN_INDEX = 0;
     55     public static final int WPA2_INDEX = 1;
     56 
     57     private View mView;
     58     private TextView mSsid;
     59     private int mSecurityTypeIndex = OPEN_INDEX;
     60     private EditText mPassword;
     61     private int mBandIndex = OPEN_INDEX;
     62 
     63     WifiConfiguration mWifiConfig;
     64     WifiManager mWifiManager;
     65     private Context mContext;
     66 
     67     private static final String TAG = "WifiApDialog";
     68 
     69     public WifiApDialog(Context context, DialogInterface.OnClickListener listener,
     70             WifiConfiguration wifiConfig) {
     71         super(context);
     72         mListener = listener;
     73         mWifiConfig = wifiConfig;
     74         if (wifiConfig != null) {
     75             mSecurityTypeIndex = getSecurityTypeIndex(wifiConfig);
     76         }
     77         mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
     78         mContext =  context;
     79     }
     80 
     81     public static int getSecurityTypeIndex(WifiConfiguration wifiConfig) {
     82         if (wifiConfig.allowedKeyManagement.get(KeyMgmt.WPA2_PSK)) {
     83             return WPA2_INDEX;
     84         }
     85         return OPEN_INDEX;
     86     }
     87 
     88     public WifiConfiguration getConfig() {
     89 
     90         WifiConfiguration config = new WifiConfiguration();
     91 
     92         /**
     93          * TODO: SSID in WifiConfiguration for soft ap
     94          * is being stored as a raw string without quotes.
     95          * This is not the case on the client side. We need to
     96          * make things consistent and clean it up
     97          */
     98         config.SSID = mSsid.getText().toString();
     99 
    100         config.apBand = mBandIndex;
    101 
    102         switch (mSecurityTypeIndex) {
    103             case OPEN_INDEX:
    104                 config.allowedKeyManagement.set(KeyMgmt.NONE);
    105                 return config;
    106 
    107             case WPA2_INDEX:
    108                 config.allowedKeyManagement.set(KeyMgmt.WPA2_PSK);
    109                 config.allowedAuthAlgorithms.set(AuthAlgorithm.OPEN);
    110                 if (mPassword.length() != 0) {
    111                     String password = mPassword.getText().toString();
    112                     config.preSharedKey = password;
    113                 }
    114                 return config;
    115         }
    116         return null;
    117     }
    118 
    119     @Override
    120     protected void onCreate(Bundle savedInstanceState) {
    121         boolean mInit = true;
    122         mView = getLayoutInflater().inflate(R.layout.wifi_ap_dialog, null);
    123         Spinner mSecurity = ((Spinner) mView.findViewById(R.id.security));
    124         final Spinner mChannel = (Spinner) mView.findViewById(R.id.choose_channel);
    125 
    126         setView(mView);
    127         setInverseBackgroundForced(true);
    128 
    129         Context context = getContext();
    130 
    131         setTitle(R.string.wifi_tether_configure_ap_text);
    132         mView.findViewById(R.id.type).setVisibility(View.VISIBLE);
    133         mSsid = (TextView) mView.findViewById(R.id.ssid);
    134         mPassword = (EditText) mView.findViewById(R.id.password);
    135 
    136         ArrayAdapter <CharSequence> channelAdapter;
    137         String countryCode = mWifiManager.getCountryCode();
    138         if (!mWifiManager.isDualBandSupported() || countryCode == null) {
    139             //If no country code, 5GHz AP is forbidden
    140             Log.i(TAG,(!mWifiManager.isDualBandSupported() ? "Device do not support 5GHz " :"")
    141                     + (countryCode == null ? " NO country code" :"") +  " forbid 5GHz");
    142             channelAdapter = ArrayAdapter.createFromResource(mContext,
    143                     R.array.wifi_ap_band_config_2G_only, android.R.layout.simple_spinner_item);
    144             mWifiConfig.apBand = 0;
    145         } else {
    146             channelAdapter = ArrayAdapter.createFromResource(mContext,
    147                     R.array.wifi_ap_band_config_full, android.R.layout.simple_spinner_item);
    148         }
    149 
    150         channelAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    151 
    152         setButton(BUTTON_SUBMIT, context.getString(R.string.wifi_save), mListener);
    153         setButton(DialogInterface.BUTTON_NEGATIVE,
    154         context.getString(R.string.wifi_cancel), mListener);
    155 
    156         if (mWifiConfig != null) {
    157             mSsid.setText(mWifiConfig.SSID);
    158             if (mWifiConfig.apBand == 0) {
    159                mBandIndex = 0;
    160             } else {
    161                mBandIndex = 1;
    162             }
    163 
    164             mSecurity.setSelection(mSecurityTypeIndex);
    165             if (mSecurityTypeIndex == WPA2_INDEX) {
    166                 mPassword.setText(mWifiConfig.preSharedKey);
    167             }
    168         }
    169 
    170         mChannel.setAdapter(channelAdapter);
    171         mChannel.setOnItemSelectedListener(
    172                 new AdapterView.OnItemSelectedListener() {
    173                     boolean mInit = true;
    174                     @Override
    175                     public void onItemSelected(AdapterView<?> adapterView, View view, int position,
    176                                                long id) {
    177                         if (!mInit) {
    178                             mBandIndex = position;
    179                             mWifiConfig.apBand = mBandIndex;
    180                             Log.i(TAG, "config on channelIndex : " + mBandIndex + " Band: " +
    181                                     mWifiConfig.apBand);
    182                         } else {
    183                             mInit = false;
    184                             mChannel.setSelection(mBandIndex);
    185                         }
    186 
    187                     }
    188 
    189                     @Override
    190                     public void onNothingSelected(AdapterView<?> adapterView) {
    191 
    192                     }
    193                 }
    194         );
    195 
    196         mSsid.addTextChangedListener(this);
    197         mPassword.addTextChangedListener(this);
    198         ((CheckBox) mView.findViewById(R.id.show_password)).setOnClickListener(this);
    199         mSecurity.setOnItemSelectedListener(this);
    200 
    201         super.onCreate(savedInstanceState);
    202 
    203         showSecurityFields();
    204         validate();
    205     }
    206 
    207     public void onRestoreInstanceState(Bundle savedInstanceState) {
    208         super.onRestoreInstanceState(savedInstanceState);
    209         mPassword.setInputType(
    210                 InputType.TYPE_CLASS_TEXT |
    211                 (((CheckBox) mView.findViewById(R.id.show_password)).isChecked() ?
    212                 InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD :
    213                 InputType.TYPE_TEXT_VARIATION_PASSWORD));
    214     }
    215 
    216     private void validate() {
    217         String mSsidString = mSsid.getText().toString();
    218         if ((mSsid != null && mSsid.length() == 0)
    219                 || ((mSecurityTypeIndex == WPA2_INDEX) && mPassword.length() < 8)
    220                 || (mSsid != null &&
    221                 Charset.forName("UTF-8").encode(mSsidString).limit() > 32)) {
    222             getButton(BUTTON_SUBMIT).setEnabled(false);
    223         } else {
    224             getButton(BUTTON_SUBMIT).setEnabled(true);
    225         }
    226     }
    227 
    228     public void onClick(View view) {
    229         mPassword.setInputType(
    230                 InputType.TYPE_CLASS_TEXT | (((CheckBox) view).isChecked() ?
    231                 InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD :
    232                 InputType.TYPE_TEXT_VARIATION_PASSWORD));
    233     }
    234 
    235     public void onTextChanged(CharSequence s, int start, int before, int count) {
    236     }
    237 
    238     public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    239     }
    240 
    241     public void afterTextChanged(Editable editable) {
    242         validate();
    243     }
    244 
    245     @Override
    246     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
    247         mSecurityTypeIndex = position;
    248         showSecurityFields();
    249         validate();
    250     }
    251 
    252     @Override
    253     public void onNothingSelected(AdapterView<?> parent) {
    254     }
    255 
    256     private void showSecurityFields() {
    257         if (mSecurityTypeIndex == OPEN_INDEX) {
    258             mView.findViewById(R.id.fields).setVisibility(View.GONE);
    259             return;
    260         }
    261         mView.findViewById(R.id.fields).setVisibility(View.VISIBLE);
    262     }
    263 }
    264