1/*
2 * Copyright (C) 2012 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.net;
18
19import static android.net.NetworkPolicy.LIMIT_DISABLED;
20import static android.net.wifi.WifiInfo.removeDoubleQuotes;
21import static com.android.settings.DataUsageSummary.hasReadyMobileRadio;
22import static com.android.settings.DataUsageSummary.hasWifiRadio;
23
24import android.content.Context;
25import android.net.NetworkPolicy;
26import android.net.NetworkPolicyManager;
27import android.net.NetworkTemplate;
28import android.net.wifi.WifiConfiguration;
29import android.net.wifi.WifiManager;
30import android.os.Bundle;
31import android.preference.CheckBoxPreference;
32import android.preference.Preference;
33import android.preference.PreferenceCategory;
34import android.telephony.TelephonyManager;
35
36import com.android.settings.R;
37import com.android.settings.SettingsPreferenceFragment;
38
39/**
40 * Panel to configure {@link NetworkPolicy#metered} for networks.
41 */
42public class DataUsageMeteredSettings extends SettingsPreferenceFragment {
43
44    private static final boolean SHOW_MOBILE_CATEGORY = false;
45
46    private NetworkPolicyManager mPolicyManager;
47    private WifiManager mWifiManager;
48
49    private NetworkPolicyEditor mPolicyEditor;
50
51    private PreferenceCategory mMobileCategory;
52    private PreferenceCategory mWifiCategory;
53    private Preference mWifiDisabled;
54
55    @Override
56    public void onCreate(Bundle icicle) {
57        super.onCreate(icicle);
58        final Context context = getActivity();
59
60        mPolicyManager = NetworkPolicyManager.from(context);
61        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
62
63        mPolicyEditor = new NetworkPolicyEditor(mPolicyManager);
64        mPolicyEditor.read();
65
66        addPreferencesFromResource(R.xml.data_usage_metered_prefs);
67        mMobileCategory = (PreferenceCategory) findPreference("mobile");
68        mWifiCategory = (PreferenceCategory) findPreference("wifi");
69        mWifiDisabled = findPreference("wifi_disabled");
70
71        updateNetworks(context);
72    }
73
74    private void updateNetworks(Context context) {
75        if (SHOW_MOBILE_CATEGORY && hasReadyMobileRadio(context)) {
76            mMobileCategory.removeAll();
77            mMobileCategory.addPreference(buildMobilePref(context));
78        } else {
79            getPreferenceScreen().removePreference(mMobileCategory);
80        }
81
82        mWifiCategory.removeAll();
83        if (hasWifiRadio(context) && mWifiManager.isWifiEnabled()) {
84            for (WifiConfiguration config : mWifiManager.getConfiguredNetworks()) {
85                if (config.SSID != null) {
86                    mWifiCategory.addPreference(buildWifiPref(context, config));
87                }
88            }
89        } else {
90            mWifiCategory.addPreference(mWifiDisabled);
91        }
92    }
93
94    private Preference buildMobilePref(Context context) {
95        final TelephonyManager tele = TelephonyManager.from(context);
96        final NetworkTemplate template = NetworkTemplate.buildTemplateMobileAll(
97                tele.getSubscriberId());
98        final MeteredPreference pref = new MeteredPreference(context, template);
99        pref.setTitle(tele.getNetworkOperatorName());
100        return pref;
101    }
102
103    private Preference buildWifiPref(Context context, WifiConfiguration config) {
104        final String networkId = config.SSID;
105        final NetworkTemplate template = NetworkTemplate.buildTemplateWifi(networkId);
106        final MeteredPreference pref = new MeteredPreference(context, template);
107        pref.setTitle(removeDoubleQuotes(networkId));
108        return pref;
109    }
110
111    private class MeteredPreference extends CheckBoxPreference {
112        private final NetworkTemplate mTemplate;
113        private boolean mBinding;
114
115        public MeteredPreference(Context context, NetworkTemplate template) {
116            super(context);
117            mTemplate = template;
118
119            setPersistent(false);
120
121            mBinding = true;
122            final NetworkPolicy policy = mPolicyEditor.getPolicyMaybeUnquoted(template);
123            if (policy != null) {
124                if (policy.limitBytes != LIMIT_DISABLED) {
125                    setChecked(true);
126                    setEnabled(false);
127                } else {
128                    setChecked(policy.metered);
129                }
130            } else {
131                setChecked(false);
132            }
133            mBinding = false;
134        }
135
136        @Override
137        protected void notifyChanged() {
138            super.notifyChanged();
139            if (!mBinding) {
140                mPolicyEditor.setPolicyMetered(mTemplate, isChecked());
141            }
142        }
143    }
144}
145