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/*
* Copyright (C) 2014 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 android.telecom;
import com.android.internal.telecom.IConnectionService;
import android.annotation.SystemApi;
import android.os.RemoteException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.CopyOnWriteArraySet;
/**
* Represents a conference call which can contain any number of {@link Connection} objects.
* @hide
*/
@SystemApi
public final class RemoteConference {
public abstract static class Callback {
public void onStateChanged(RemoteConference conference, int oldState, int newState) {}
public void onDisconnected(RemoteConference conference, DisconnectCause disconnectCause) {}
public void onConnectionAdded(RemoteConference conference, RemoteConnection connection) {}
public void onConnectionRemoved(RemoteConference conference, RemoteConnection connection) {}
public void onConnectionCapabilitiesChanged(
RemoteConference conference,
int connectionCapabilities) {}
public void onConferenceableConnectionsChanged(
RemoteConference conference,
List<RemoteConnection> conferenceableConnections) {}
public void onDestroyed(RemoteConference conference) {}
}
private final String mId;
private final IConnectionService mConnectionService;
private final Set<Callback> mCallbacks = new CopyOnWriteArraySet<>();
private final List<RemoteConnection> mChildConnections = new CopyOnWriteArrayList<>();
private final List<RemoteConnection> mUnmodifiableChildConnections =
Collections.unmodifiableList(mChildConnections);
private final List<RemoteConnection> mConferenceableConnections = new ArrayList<>();
private final List<RemoteConnection> mUnmodifiableConferenceableConnections =
Collections.unmodifiableList(mConferenceableConnections);
private int mState = Connection.STATE_NEW;
private DisconnectCause mDisconnectCause;
private int mConnectionCapabilities;
/** {@hide} */
RemoteConference(String id, IConnectionService connectionService) {
mId = id;
mConnectionService = connectionService;
}
/** {@hide} */
String getId() {
return mId;
}
/** {@hide} */
void setDestroyed() {
for (RemoteConnection connection : mChildConnections) {
connection.setConference(null);
}
for (Callback c : mCallbacks) {
c.onDestroyed(this);
}
}
/** {@hide} */
void setState(int newState) {
if (newState != Connection.STATE_ACTIVE &&
newState != Connection.STATE_HOLDING &&
newState != Connection.STATE_DISCONNECTED) {
Log.w(this, "Unsupported state transition for Conference call.",
Connection.stateToString(newState));
return;
}
if (mState != newState) {
int oldState = mState;
mState = newState;
for (Callback c : mCallbacks) {
c.onStateChanged(this, oldState, newState);
}
}
}
/** {@hide} */
void addConnection(RemoteConnection connection) {
if (!mChildConnections.contains(connection)) {
mChildConnections.add(connection);
connection.setConference(this);
for (Callback c : mCallbacks) {
c.onConnectionAdded(this, connection);
}
}
}
/** {@hide} */
void removeConnection(RemoteConnection connection) {
if (mChildConnections.contains(connection)) {
mChildConnections.remove(connection);
connection.setConference(null);
for (Callback c : mCallbacks) {
c.onConnectionRemoved(this, connection);
}
}
}
/** {@hide} */
void setConnectionCapabilities(int connectionCapabilities) {
if (mConnectionCapabilities != connectionCapabilities) {
mConnectionCapabilities = connectionCapabilities;
for (Callback c : mCallbacks) {
c.onConnectionCapabilitiesChanged(this, mConnectionCapabilities);
}
}
}
/** @hide */
void setConferenceableConnections(List<RemoteConnection> conferenceableConnections) {
mConferenceableConnections.clear();
mConferenceableConnections.addAll(conferenceableConnections);
for (Callback c : mCallbacks) {
c.onConferenceableConnectionsChanged(this, mUnmodifiableConferenceableConnections);
}
}
/** {@hide} */
void setDisconnected(DisconnectCause disconnectCause) {
if (mState != Connection.STATE_DISCONNECTED) {
mDisconnectCause = disconnectCause;
setState(Connection.STATE_DISCONNECTED);
for (Callback c : mCallbacks) {
c.onDisconnected(this, disconnectCause);
}
}
}
public final List<RemoteConnection> getConnections() {
return mUnmodifiableChildConnections;
}
public final int getState() {
return mState;
}
/** @hide */
@Deprecated public final int getCallCapabilities() {
return getConnectionCapabilities();
}
public final int getConnectionCapabilities() {
return mConnectionCapabilities;
}
public void disconnect() {
try {
mConnectionService.disconnect(mId);
} catch (RemoteException e) {
}
}
public void separate(RemoteConnection connection) {
if (mChildConnections.contains(connection)) {
try {
mConnectionService.splitFromConference(connection.getId());
} catch (RemoteException e) {
}
}
}
public void merge() {
try {
mConnectionService.mergeConference(mId);
} catch (RemoteException e) {
}
}
public void swap() {
try {
mConnectionService.swapConference(mId);
} catch (RemoteException e) {
}
}
public void hold() {
try {
mConnectionService.hold(mId);
} catch (RemoteException e) {
}
}
public void unhold() {
try {
mConnectionService.unhold(mId);
} catch (RemoteException e) {
}
}
public DisconnectCause getDisconnectCause() {
return mDisconnectCause;
}
public void playDtmfTone(char digit) {
try {
mConnectionService.playDtmfTone(mId, digit);
} catch (RemoteException e) {
}
}
public void stopDtmfTone() {
try {
mConnectionService.stopDtmfTone(mId);
} catch (RemoteException e) {
}
}
public void setAudioState(AudioState state) {
try {
mConnectionService.onAudioStateChanged(mId, state);
} catch (RemoteException e) {
}
}
public List<RemoteConnection> getConferenceableConnections() {
return mUnmodifiableConferenceableConnections;
}
public final void registerCallback(Callback callback) {
mCallbacks.add(callback);
}
public final void unregisterCallback(Callback callback) {
mCallbacks.remove(callback);
}
}
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