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/*
* Copyright (C) 2017 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.incallui.call;
import android.os.Handler;
import android.os.Looper;
import android.support.annotation.NonNull;
import android.telecom.Call;
import android.util.ArraySet;
import com.android.contacts.common.compat.CallCompat;
import com.android.dialer.common.Assert;
import com.android.dialer.common.LogUtil;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
/**
* Tracks the external calls known to the InCall UI.
*
* <p>External calls are those with {@code android.telecom.Call.Details#PROPERTY_IS_EXTERNAL_CALL}.
*/
public class ExternalCallList {
private final Set<Call> mExternalCalls = new ArraySet<>();
private final Set<ExternalCallListener> mExternalCallListeners =
Collections.newSetFromMap(new ConcurrentHashMap<ExternalCallListener, Boolean>(8, 0.9f, 1));
/** Handles {@link android.telecom.Call.Callback} callbacks. */
private final Call.Callback mTelecomCallCallback =
new Call.Callback() {
@Override
public void onDetailsChanged(Call call, Call.Details details) {
notifyExternalCallUpdated(call);
}
};
/** Begins tracking an external call and notifies listeners of the new call. */
public void onCallAdded(Call telecomCall) {
Assert.checkArgument(
telecomCall.getDetails().hasProperty(CallCompat.Details.PROPERTY_IS_EXTERNAL_CALL));
mExternalCalls.add(telecomCall);
telecomCall.registerCallback(mTelecomCallCallback, new Handler(Looper.getMainLooper()));
notifyExternalCallAdded(telecomCall);
}
/** Stops tracking an external call and notifies listeners of the removal of the call. */
public void onCallRemoved(Call telecomCall) {
if (!mExternalCalls.contains(telecomCall)) {
// This can happen on M for external calls from blocked numbers
LogUtil.i("ExternalCallList.onCallRemoved", "attempted to remove unregistered call");
return;
}
mExternalCalls.remove(telecomCall);
telecomCall.unregisterCallback(mTelecomCallCallback);
notifyExternalCallRemoved(telecomCall);
}
/** Adds a new listener to external call events. */
public void addExternalCallListener(@NonNull ExternalCallListener listener) {
mExternalCallListeners.add(listener);
}
/** Removes a listener to external call events. */
public void removeExternalCallListener(@NonNull ExternalCallListener listener) {
if (!mExternalCallListeners.contains(listener)) {
LogUtil.i(
"ExternalCallList.removeExternalCallListener",
"attempt to remove unregistered listener.");
}
mExternalCallListeners.remove(listener);
}
public boolean isCallTracked(@NonNull android.telecom.Call telecomCall) {
return mExternalCalls.contains(telecomCall);
}
/** Notifies listeners of the addition of a new external call. */
private void notifyExternalCallAdded(Call call) {
for (ExternalCallListener listener : mExternalCallListeners) {
listener.onExternalCallAdded(call);
}
}
/** Notifies listeners of the removal of an external call. */
private void notifyExternalCallRemoved(Call call) {
for (ExternalCallListener listener : mExternalCallListeners) {
listener.onExternalCallRemoved(call);
}
}
/** Notifies listeners of changes to an external call. */
private void notifyExternalCallUpdated(Call call) {
if (!call.getDetails().hasProperty(CallCompat.Details.PROPERTY_IS_EXTERNAL_CALL)) {
// A previous external call has been pulled and is now a regular call, so we will remove
// it from the external call listener and ensure that the CallList is informed of the
// change.
onCallRemoved(call);
for (ExternalCallListener listener : mExternalCallListeners) {
listener.onExternalCallPulled(call);
}
} else {
for (ExternalCallListener listener : mExternalCallListeners) {
listener.onExternalCallUpdated(call);
}
}
}
/**
* Defines events which the {@link ExternalCallList} exposes to interested components (e.g. {@link
* com.android.incallui.ExternalCallNotifier ExternalCallNotifier}).
*/
public interface ExternalCallListener {
void onExternalCallAdded(Call call);
void onExternalCallRemoved(Call call);
void onExternalCallUpdated(Call call);
void onExternalCallPulled(Call call);
}
}
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