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      1 /*
      2  * Copyright (C) 2017 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 package com.android.settings.wifi;
     17 
     18 import android.app.Dialog;
     19 import android.app.FragmentManager;
     20 import android.content.BroadcastReceiver;
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.IntentFilter;
     24 import android.net.wifi.WifiManager;
     25 import android.net.wifi.WpsInfo;
     26 import android.os.Bundle;
     27 import android.support.annotation.VisibleForTesting;
     28 import android.support.v7.preference.Preference;
     29 import android.support.v7.preference.PreferenceScreen;
     30 
     31 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     32 import com.android.settings.core.PreferenceController;
     33 import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
     34 import com.android.settings.core.lifecycle.Lifecycle;
     35 import com.android.settings.core.lifecycle.LifecycleObserver;
     36 import com.android.settings.core.lifecycle.events.OnPause;
     37 import com.android.settings.core.lifecycle.events.OnResume;
     38 
     39 /**
     40  * {@link PreferenceController} that shows Dialog for WPS progress. Disabled when Wi-Fi is off.
     41  */
     42 public class WpsPreferenceController extends PreferenceController implements
     43         LifecycleObserver, OnPause, OnResume {
     44 
     45     private static final String KEY_WPS_PUSH = "wps_push_button";
     46     private static final String KEY_WPS_PIN = "wps_pin_entry";
     47 
     48     private final WifiManager mWifiManager;
     49     private final FragmentManager mFragmentManager;
     50     @VisibleForTesting
     51     final BroadcastReceiver mReceiver = new BroadcastReceiver() {
     52         @Override
     53         public void onReceive(Context context, Intent intent) {
     54             togglePreferences();
     55         }
     56     };
     57     private final IntentFilter mFilter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION);
     58 
     59     private Preference mWpsPushPref;
     60     private Preference mWpsPinPref;
     61 
     62     public WpsPreferenceController(
     63             Context context,
     64             Lifecycle lifecycle,
     65             WifiManager wifiManager,
     66             FragmentManager fragmentManager) {
     67         super(context);
     68         mWifiManager = wifiManager;
     69         mFragmentManager = fragmentManager;
     70         lifecycle.addObserver(this);
     71     }
     72 
     73     @Override
     74     public boolean isAvailable() {
     75         // Always show preference.
     76         return true;
     77     }
     78 
     79     @Override
     80     public String getPreferenceKey() {
     81         // Returns null because this controller contains more than 1 preference.
     82         return null;
     83     }
     84 
     85     @Override
     86     public void displayPreference(PreferenceScreen screen) {
     87         super.displayPreference(screen);
     88         mWpsPushPref = screen.findPreference(KEY_WPS_PUSH);
     89         mWpsPinPref = screen.findPreference(KEY_WPS_PIN);
     90         if (mWpsPushPref == null || mWpsPinPref == null) {
     91             return;
     92         }
     93         // WpsDialog: Create the dialog like WifiSettings does.
     94         mWpsPushPref.setOnPreferenceClickListener((arg) -> {
     95                     WpsFragment wpsFragment = new WpsFragment(WpsInfo.PBC);
     96                     wpsFragment.show(mFragmentManager, KEY_WPS_PUSH);
     97                     return true;
     98                 }
     99         );
    100 
    101         // WpsDialog: Create the dialog like WifiSettings does.
    102         mWpsPinPref.setOnPreferenceClickListener((arg) -> {
    103             WpsFragment wpsFragment = new WpsFragment(WpsInfo.DISPLAY);
    104             wpsFragment.show(mFragmentManager, KEY_WPS_PIN);
    105             return true;
    106         });
    107         togglePreferences();
    108     }
    109 
    110     @Override
    111     public void onResume() {
    112         mContext.registerReceiver(mReceiver, mFilter);
    113     }
    114 
    115     @Override
    116     public void onPause() {
    117         mContext.unregisterReceiver(mReceiver);
    118     }
    119 
    120     private void togglePreferences() {
    121         if (mWpsPushPref != null && mWpsPinPref != null) {
    122             boolean enabled = mWifiManager.isWifiEnabled();
    123             mWpsPushPref.setEnabled(enabled);
    124             mWpsPinPref.setEnabled(enabled);
    125         }
    126     }
    127 
    128     /**
    129      * Fragment for Dialog to show WPS progress.
    130      */
    131     public static class WpsFragment extends InstrumentedDialogFragment {
    132         private static int mWpsSetup;
    133 
    134         // Public default constructor is required for rotation.
    135         public WpsFragment() {
    136             super();
    137         }
    138 
    139         public WpsFragment(int wpsSetup) {
    140             super();
    141             mWpsSetup = wpsSetup;
    142         }
    143 
    144         @Override
    145         public int getMetricsCategory() {
    146             return MetricsEvent.DIALOG_WPS_SETUP;
    147         }
    148 
    149         @Override
    150         public Dialog onCreateDialog(Bundle savedInstanceState) {
    151             return new WpsDialog(getActivity(), mWpsSetup);
    152         }
    153     }
    154 }