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      1 /*
      2  * Copyright (C) 2015 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.dialer.app.calllog.calllogcache;
     18 
     19 import android.content.Context;
     20 import android.support.annotation.Nullable;
     21 import android.telecom.PhoneAccountHandle;
     22 import android.text.TextUtils;
     23 import android.util.ArrayMap;
     24 import com.android.dialer.app.calllog.CallLogAdapter;
     25 import com.android.dialer.calllogutils.PhoneAccountUtils;
     26 import com.android.dialer.telecom.TelecomUtil;
     27 import com.android.dialer.util.CallUtil;
     28 import java.util.Map;
     29 import javax.annotation.concurrent.ThreadSafe;
     30 
     31 /**
     32  * This is the base class for the CallLogCaches.
     33  *
     34  * <p>Keeps a cache of recently made queries to the Telecom/Telephony processes. The aim of this
     35  * cache is to reduce the number of cross-process requests to TelecomManager, which can negatively
     36  * affect performance.
     37  *
     38  * <p>This is designed with the specific use case of the {@link CallLogAdapter} in mind.
     39  */
     40 @ThreadSafe
     41 public class CallLogCache {
     42   // TODO: Dialer should be fixed so as not to check isVoicemail() so often but at the time of
     43   // this writing, that was a much larger undertaking than creating this cache.
     44 
     45   protected final Context context;
     46 
     47   private boolean hasCheckedForVideoAvailability;
     48   private int videoAvailability;
     49   private final Map<PhoneAccountHandle, String> phoneAccountLabelCache = new ArrayMap<>();
     50   private final Map<PhoneAccountHandle, Integer> phoneAccountColorCache = new ArrayMap<>();
     51   private final Map<PhoneAccountHandle, Boolean> phoneAccountCallWithNoteCache = new ArrayMap<>();
     52 
     53   public CallLogCache(Context context) {
     54     this.context = context;
     55   }
     56 
     57   public synchronized void reset() {
     58     phoneAccountLabelCache.clear();
     59     phoneAccountColorCache.clear();
     60     phoneAccountCallWithNoteCache.clear();
     61     hasCheckedForVideoAvailability = false;
     62     videoAvailability = 0;
     63   }
     64 
     65   /**
     66    * Returns true if the given number is the number of the configured voicemail. To be able to
     67    * mock-out this, it is not a static method.
     68    */
     69   public synchronized boolean isVoicemailNumber(
     70       PhoneAccountHandle accountHandle, @Nullable CharSequence number) {
     71     if (TextUtils.isEmpty(number)) {
     72       return false;
     73     }
     74     return TelecomUtil.isVoicemailNumber(context, accountHandle, number.toString());
     75   }
     76 
     77   /**
     78    * Returns {@code true} when the current sim supports checking video calling capabilities via the
     79    * {@link android.provider.ContactsContract.CommonDataKinds.Phone#CARRIER_PRESENCE} column.
     80    */
     81   public boolean canRelyOnVideoPresence() {
     82     if (!hasCheckedForVideoAvailability) {
     83       videoAvailability = CallUtil.getVideoCallingAvailability(context);
     84       hasCheckedForVideoAvailability = true;
     85     }
     86     return (videoAvailability & CallUtil.VIDEO_CALLING_PRESENCE) != 0;
     87   }
     88 
     89   /** Extract account label from PhoneAccount object. */
     90   public synchronized String getAccountLabel(PhoneAccountHandle accountHandle) {
     91     if (phoneAccountLabelCache.containsKey(accountHandle)) {
     92       return phoneAccountLabelCache.get(accountHandle);
     93     } else {
     94       String label = PhoneAccountUtils.getAccountLabel(context, accountHandle);
     95       phoneAccountLabelCache.put(accountHandle, label);
     96       return label;
     97     }
     98   }
     99 
    100   /** Extract account color from PhoneAccount object. */
    101   public synchronized int getAccountColor(PhoneAccountHandle accountHandle) {
    102     if (phoneAccountColorCache.containsKey(accountHandle)) {
    103       return phoneAccountColorCache.get(accountHandle);
    104     } else {
    105       Integer color = PhoneAccountUtils.getAccountColor(context, accountHandle);
    106       phoneAccountColorCache.put(accountHandle, color);
    107       return color;
    108     }
    109   }
    110 
    111   /**
    112    * Determines if the PhoneAccount supports specifying a call subject (i.e. calling with a note)
    113    * for outgoing calls.
    114    *
    115    * @param accountHandle The PhoneAccount handle.
    116    * @return {@code true} if calling with a note is supported, {@code false} otherwise.
    117    */
    118   public synchronized boolean doesAccountSupportCallSubject(PhoneAccountHandle accountHandle) {
    119     if (phoneAccountCallWithNoteCache.containsKey(accountHandle)) {
    120       return phoneAccountCallWithNoteCache.get(accountHandle);
    121     } else {
    122       Boolean supportsCallWithNote =
    123           PhoneAccountUtils.getAccountSupportsCallSubject(context, accountHandle);
    124       phoneAccountCallWithNoteCache.put(accountHandle, supportsCallWithNote);
    125       return supportsCallWithNote;
    126     }
    127   }
    128 }
    129