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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.os.Bundle;
26 import android.text.Editable;
27 import android.text.InputType;
28 import android.text.TextWatcher;
29 import android.view.View;
30 import android.widget.AdapterView;
31 import android.widget.CheckBox;
32 import android.widget.EditText;
33 import android.widget.Spinner;
34 import android.widget.TextView;
35 
36 import com.android.settings.R;
37 
38 /**
39  * Dialog to configure the SSID and security settings
40  * for Access Point operation
41  */
42 public class WifiApDialog extends AlertDialog implements View.OnClickListener,
43         TextWatcher, AdapterView.OnItemSelectedListener {
44 
45     static final int BUTTON_SUBMIT = DialogInterface.BUTTON_POSITIVE;
46 
47     private final DialogInterface.OnClickListener mListener;
48 
49     public static final int OPEN_INDEX = 0;
50     public static final int WPA2_INDEX = 1;
51 
52     private View mView;
53     private TextView mSsid;
54     private int mSecurityTypeIndex = OPEN_INDEX;
55     private EditText mPassword;
56 
57     WifiConfiguration mWifiConfig;
58 
WifiApDialog(Context context, DialogInterface.OnClickListener listener, WifiConfiguration wifiConfig)59     public WifiApDialog(Context context, DialogInterface.OnClickListener listener,
60             WifiConfiguration wifiConfig) {
61         super(context);
62         mListener = listener;
63         mWifiConfig = wifiConfig;
64         if (wifiConfig != null) {
65             mSecurityTypeIndex = getSecurityTypeIndex(wifiConfig);
66         }
67     }
68 
getSecurityTypeIndex(WifiConfiguration wifiConfig)69     public static int getSecurityTypeIndex(WifiConfiguration wifiConfig) {
70         if (wifiConfig.allowedKeyManagement.get(KeyMgmt.WPA2_PSK)) {
71             return WPA2_INDEX;
72         }
73         return OPEN_INDEX;
74     }
75 
getConfig()76     public WifiConfiguration getConfig() {
77 
78         WifiConfiguration config = new WifiConfiguration();
79 
80         /**
81          * TODO: SSID in WifiConfiguration for soft ap
82          * is being stored as a raw string without quotes.
83          * This is not the case on the client side. We need to
84          * make things consistent and clean it up
85          */
86         config.SSID = mSsid.getText().toString();
87 
88         switch (mSecurityTypeIndex) {
89             case OPEN_INDEX:
90                 config.allowedKeyManagement.set(KeyMgmt.NONE);
91                 return config;
92 
93             case WPA2_INDEX:
94                 config.allowedKeyManagement.set(KeyMgmt.WPA2_PSK);
95                 config.allowedAuthAlgorithms.set(AuthAlgorithm.OPEN);
96                 if (mPassword.length() != 0) {
97                     String password = mPassword.getText().toString();
98                     config.preSharedKey = password;
99                 }
100                 return config;
101         }
102         return null;
103     }
104 
105     @Override
onCreate(Bundle savedInstanceState)106     protected void onCreate(Bundle savedInstanceState) {
107 
108         mView = getLayoutInflater().inflate(R.layout.wifi_ap_dialog, null);
109         Spinner mSecurity = ((Spinner) mView.findViewById(R.id.security));
110 
111         setView(mView);
112         setInverseBackgroundForced(true);
113 
114         Context context = getContext();
115 
116         setTitle(R.string.wifi_tether_configure_ap_text);
117         mView.findViewById(R.id.type).setVisibility(View.VISIBLE);
118         mSsid = (TextView) mView.findViewById(R.id.ssid);
119         mPassword = (EditText) mView.findViewById(R.id.password);
120 
121         setButton(BUTTON_SUBMIT, context.getString(R.string.wifi_save), mListener);
122         setButton(DialogInterface.BUTTON_NEGATIVE,
123         context.getString(R.string.wifi_cancel), mListener);
124 
125         if (mWifiConfig != null) {
126             mSsid.setText(mWifiConfig.SSID);
127             mSecurity.setSelection(mSecurityTypeIndex);
128             if (mSecurityTypeIndex == WPA2_INDEX) {
129                   mPassword.setText(mWifiConfig.preSharedKey);
130             }
131         }
132 
133         mSsid.addTextChangedListener(this);
134         mPassword.addTextChangedListener(this);
135         ((CheckBox) mView.findViewById(R.id.show_password)).setOnClickListener(this);
136         mSecurity.setOnItemSelectedListener(this);
137 
138         super.onCreate(savedInstanceState);
139 
140         showSecurityFields();
141         validate();
142     }
143 
validate()144     private void validate() {
145         if ((mSsid != null && mSsid.length() == 0) ||
146                    ((mSecurityTypeIndex == WPA2_INDEX)&&
147                         mPassword.length() < 8)) {
148             getButton(BUTTON_SUBMIT).setEnabled(false);
149         } else {
150             getButton(BUTTON_SUBMIT).setEnabled(true);
151         }
152     }
153 
onClick(View view)154     public void onClick(View view) {
155         mPassword.setInputType(
156                 InputType.TYPE_CLASS_TEXT | (((CheckBox) view).isChecked() ?
157                 InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD :
158                 InputType.TYPE_TEXT_VARIATION_PASSWORD));
159     }
160 
onTextChanged(CharSequence s, int start, int before, int count)161     public void onTextChanged(CharSequence s, int start, int before, int count) {
162     }
163 
beforeTextChanged(CharSequence s, int start, int count, int after)164     public void beforeTextChanged(CharSequence s, int start, int count, int after) {
165     }
166 
afterTextChanged(Editable editable)167     public void afterTextChanged(Editable editable) {
168         validate();
169     }
170 
171     @Override
onItemSelected(AdapterView<?> parent, View view, int position, long id)172     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
173         mSecurityTypeIndex = position;
174         showSecurityFields();
175         validate();
176     }
177 
178     @Override
onNothingSelected(AdapterView<?> parent)179     public void onNothingSelected(AdapterView<?> parent) {
180     }
181 
showSecurityFields()182     private void showSecurityFields() {
183         if (mSecurityTypeIndex == OPEN_INDEX) {
184             mView.findViewById(R.id.fields).setVisibility(View.GONE);
185             return;
186         }
187         mView.findViewById(R.id.fields).setVisibility(View.VISIBLE);
188     }
189 }
190