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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.telecomm;
import com.android.internal.telecomm.IConnectionService;
import android.os.RemoteException;
import android.telephony.DisconnectCause;
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.
*/
public final class RemoteConference {
public abstract static class Callback {
public void onStateChanged(RemoteConference conference, int oldState, int newState) {}
public void onDisconnected(RemoteConference conference, int cause, String message) {}
public void onConnectionAdded(RemoteConference conference, RemoteConnection connection) {}
public void onConnectionRemoved(RemoteConference conference, RemoteConnection connection) {}
public void onCapabilitiesChanged(RemoteConference conference, int capabilities) {}
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 int mState = Connection.STATE_NEW;
private int mDisconnectCause = DisconnectCause.NOT_VALID;
private int mCallCapabilities;
private String mDisconnectMessage;
/** {@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 setCallCapabilities(int capabilities) {
if (mCallCapabilities != capabilities) {
mCallCapabilities = capabilities;
for (Callback c : mCallbacks) {
c.onCapabilitiesChanged(this, mCallCapabilities);
}
}
}
/** {@hide} */
void setDisconnected(int cause, String message) {
if (mState != Connection.STATE_DISCONNECTED) {
mDisconnectCause = cause;
mDisconnectMessage = message;
setState(Connection.STATE_DISCONNECTED);
for (Callback c : mCallbacks) {
c.onDisconnected(this, cause, message);
}
}
}
public final List<RemoteConnection> getConnections() {
return mUnmodifiableChildConnections;
}
public final int getState() {
return mState;
}
public final int getCallCapabilities() {
return mCallCapabilities;
}
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 hold() {
try {
mConnectionService.hold(mId);
} catch (RemoteException e) {
}
}
public void unhold() {
try {
mConnectionService.unhold(mId);
} catch (RemoteException e) {
}
}
public int getDisconnectCause() {
return mDisconnectCause;
}
public String getDisconnectMessage() {
return mDisconnectMessage;
}
public final void registerCallback(Callback callback) {
mCallbacks.add(callback);
}
public final void unregisterCallback(Callback callback) {
mCallbacks.remove(callback);
}
}
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