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/*
* 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.support.annotation.Nullable;
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.
*
* <p>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.
*
* <p>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, @Nullable 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);
}
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