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      1 /*
      2  * Copyright (C) 2016 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.systemui.statusbar.policy;
     18 
     19 import android.annotation.Nullable;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.IntentFilter;
     23 import android.net.ConnectivityManager;
     24 import android.provider.Settings;
     25 import android.telephony.ServiceState;
     26 import android.telephony.SubscriptionInfo;
     27 import android.text.TextUtils;
     28 import android.util.AttributeSet;
     29 import android.util.Log;
     30 import android.view.ViewGroup;
     31 import android.view.ViewParent;
     32 import android.widget.TextView;
     33 
     34 import com.android.internal.telephony.IccCardConstants;
     35 import com.android.internal.telephony.TelephonyIntents;
     36 import com.android.keyguard.KeyguardUpdateMonitor;
     37 import com.android.keyguard.KeyguardUpdateMonitorCallback;
     38 
     39 import java.util.List;
     40 
     41 public class EmergencyCryptkeeperText extends TextView {
     42 
     43     private KeyguardUpdateMonitor mKeyguardUpdateMonitor;
     44     private KeyguardUpdateMonitorCallback mCallback = new KeyguardUpdateMonitorCallback() {
     45         @Override
     46         public void onPhoneStateChanged(int phoneState) {
     47             update();
     48         }
     49     };
     50 
     51     public EmergencyCryptkeeperText(Context context, @Nullable AttributeSet attrs) {
     52         super(context, attrs);
     53         setVisibility(GONE);
     54     }
     55 
     56     @Override
     57     protected void onAttachedToWindow() {
     58         super.onAttachedToWindow();
     59         mKeyguardUpdateMonitor = KeyguardUpdateMonitor.getInstance(mContext);
     60         mKeyguardUpdateMonitor.registerCallback(mCallback);
     61         update();
     62     }
     63 
     64     @Override
     65     protected void onDetachedFromWindow() {
     66         super.onDetachedFromWindow();
     67         if (mKeyguardUpdateMonitor != null) {
     68             mKeyguardUpdateMonitor.removeCallback(mCallback);
     69         }
     70     }
     71 
     72     public void update() {
     73         boolean hasMobile = ConnectivityManager.from(mContext)
     74                 .isNetworkSupported(ConnectivityManager.TYPE_MOBILE);
     75         boolean airplaneMode = (Settings.Global.getInt(mContext.getContentResolver(),
     76                 Settings.Global.AIRPLANE_MODE_ON, 0) == 1);
     77 
     78         if (!hasMobile || airplaneMode) {
     79             setText(null);
     80             setVisibility(GONE);
     81             return;
     82         }
     83 
     84         boolean allSimsMissing = true;
     85         CharSequence displayText = null;
     86 
     87         List<SubscriptionInfo> subs = mKeyguardUpdateMonitor.getSubscriptionInfo(false);
     88         final int N = subs.size();
     89         for (int i = 0; i < N; i++) {
     90             int subId = subs.get(i).getSubscriptionId();
     91             IccCardConstants.State simState = mKeyguardUpdateMonitor.getSimState(subId);
     92             CharSequence carrierName = subs.get(i).getCarrierName();
     93             if (simState.iccCardExist() && !TextUtils.isEmpty(carrierName)) {
     94                 allSimsMissing = false;
     95                 displayText = carrierName;
     96             }
     97         }
     98         if (allSimsMissing) {
     99             if (N != 0) {
    100                 // Shows "Emergency calls only" on devices that are voice-capable.
    101                 // This depends on mPlmn containing the text "Emergency calls only" when the radio
    102                 // has some connectivity. Otherwise it should show "No service"
    103                 // Grab the first subscription, because they all should contain the emergency text,
    104                 // described above.
    105                 displayText = subs.get(0).getCarrierName();
    106             } else {
    107                 // We don't have a SubscriptionInfo to get the emergency calls only from.
    108                 // Grab it from the old sticky broadcast if possible instead. We can use it
    109                 // here because no subscriptions are active, so we don't have
    110                 // to worry about MSIM clashing.
    111                 displayText = getContext().getText(
    112                         com.android.internal.R.string.emergency_calls_only);
    113                 Intent i = getContext().registerReceiver(null,
    114                         new IntentFilter(TelephonyIntents.SPN_STRINGS_UPDATED_ACTION));
    115                 if (i != null) {
    116                     displayText = i.getStringExtra(TelephonyIntents.EXTRA_PLMN);
    117                 }
    118             }
    119         }
    120 
    121         setText(displayText);
    122         setVisibility(TextUtils.isEmpty(displayText) ? GONE : VISIBLE);
    123     }
    124 }
    125