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
17package com.android.settings.wifi;
18
19import android.app.AlertDialog;
20import android.content.Context;
21import android.content.DialogInterface;
22import android.net.wifi.WifiConfiguration;
23import android.net.wifi.WifiConfiguration.AuthAlgorithm;
24import android.net.wifi.WifiConfiguration.KeyMgmt;
25import android.os.Bundle;
26import android.text.Editable;
27import android.text.InputType;
28import android.text.TextWatcher;
29import android.view.View;
30import android.widget.AdapterView;
31import android.widget.CheckBox;
32import android.widget.EditText;
33import android.widget.Spinner;
34import android.widget.TextView;
35
36import com.android.settings.R;
37
38/**
39 * Dialog to configure the SSID and security settings
40 * for Access Point operation
41 */
42public 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
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
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
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
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
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
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
161    public void onTextChanged(CharSequence s, int start, int before, int count) {
162    }
163
164    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
165    }
166
167    public void afterTextChanged(Editable editable) {
168        validate();
169    }
170
171    @Override
172    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
173        mSecurityTypeIndex = position;
174        showSecurityFields();
175        validate();
176    }
177
178    @Override
179    public void onNothingSelected(AdapterView<?> parent) {
180    }
181
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