/* * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License */ package com.android.dialer.app.calllog.calllogcache; import android.content.Context; import android.telecom.PhoneAccountHandle; import com.android.dialer.app.calllog.CallLogAdapter; import com.android.dialer.util.CallUtil; /** * This is the base class for the CallLogCaches. * *
Keeps a cache of recently made queries to the Telecom/Telephony processes. The aim of this * cache is to reduce the number of cross-process requests to TelecomManager, which can negatively * affect performance. * *
This is designed with the specific use case of the {@link CallLogAdapter} in mind. */ public abstract class CallLogCache { // TODO: Dialer should be fixed so as not to check isVoicemail() so often but at the time of // this writing, that was a much larger undertaking than creating this cache. protected final Context mContext; private boolean mHasCheckedForVideoAvailability; private int mVideoAvailability; public CallLogCache(Context context) { mContext = context; } /** Return the most compatible version of the TelecomCallLogCache. */ public static CallLogCache getCallLogCache(Context context) { return new CallLogCacheLollipopMr1(context); } public void reset() { mHasCheckedForVideoAvailability = false; mVideoAvailability = 0; } /** * Returns true if the given number is the number of the configured voicemail. To be able to * mock-out this, it is not a static method. */ public abstract boolean isVoicemailNumber(PhoneAccountHandle accountHandle, CharSequence number); /** * Returns {@code true} when the current sim supports checking video calling capabilities via the * {@link android.provider.ContactsContract.CommonDataKinds.Phone#CARRIER_PRESENCE} column. */ public boolean canRelyOnVideoPresence() { if (!mHasCheckedForVideoAvailability) { mVideoAvailability = CallUtil.getVideoCallingAvailability(mContext); mHasCheckedForVideoAvailability = true; } return (mVideoAvailability & CallUtil.VIDEO_CALLING_PRESENCE) != 0; } /** Extract account label from PhoneAccount object. */ public abstract String getAccountLabel(PhoneAccountHandle accountHandle); /** Extract account color from PhoneAccount object. */ public abstract int getAccountColor(PhoneAccountHandle accountHandle); /** * Determines if the PhoneAccount supports specifying a call subject (i.e. calling with a note) * for outgoing calls. * * @param accountHandle The PhoneAccount handle. * @return {@code true} if calling with a note is supported, {@code false} otherwise. */ public abstract boolean doesAccountSupportCallSubject(PhoneAccountHandle accountHandle); }