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package com.android.incallui;
import com.google.common.base.Preconditions;
import com.android.contacts.common.compat.CallSdkCompat;
import android.os.Handler;
import android.os.Looper;
import android.telecom.Call;
import android.util.ArraySet;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
/**
* Tracks the external calls known to the InCall UI.
*
* External calls are those with {@link android.telecom.Call.Details#PROPERTY_IS_EXTERNAL_CALL}.
*/
public class ExternalCallList {
public interface ExternalCallListener {
void onExternalCallAdded(Call call);
void onExternalCallRemoved(Call call);
void onExternalCallUpdated(Call call);
}
/**
* 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);
}
};
private final Set<Call> mExternalCalls = new ArraySet<>();
private final Set<ExternalCallListener> mExternalCallListeners = Collections.newSetFromMap(
new ConcurrentHashMap<ExternalCallListener, Boolean>(8, 0.9f, 1));
/**
* Begins tracking an external call and notifies listeners of the new call.
*/
public void onCallAdded(Call telecomCall) {
Preconditions.checkArgument(telecomCall.getDetails()
.hasProperty(CallSdkCompat.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) {
Preconditions.checkArgument(mExternalCalls.contains(telecomCall));
mExternalCalls.remove(telecomCall);
telecomCall.unregisterCallback(mTelecomCallCallback);
notifyExternalCallRemoved(telecomCall);
}
/**
* Adds a new listener to external call events.
*/
public void addExternalCallListener(ExternalCallListener listener) {
mExternalCallListeners.add(Preconditions.checkNotNull(listener));
}
/**
* Removes a listener to external call events.
*/
public void removeExternalCallListener(ExternalCallListener listener) {
Preconditions.checkArgument(mExternalCallListeners.contains(listener));
mExternalCallListeners.remove(Preconditions.checkNotNull(listener));
}
/**
* 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) {
for (ExternalCallListener listener : mExternalCallListeners) {
listener.onExternalCallUpdated(call);
}
}
}
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