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/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.android.incallui;
import android.os.Bundle;
import com.android.incallui.InCallPresenter.InCallDetailsListener;
import com.google.common.base.Preconditions;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.List;
import org.codeaurora.QtiVideoCallConstants;
/**
* This class listens to incoming events from the {@class InCallDetailsListener}.
* When call details change, this class is notified and we parse the extras from the details to
* figure out if session modification cause has been sent when a call upgrades/downgrades and
* notify the {@class InCallMessageController} to display the indication on UI.
*/
public class SessionModificationCauseNotifier implements InCallDetailsListener{
private final List<InCallSessionModificationCauseListener> mSessionModificationCauseListeners
= new CopyOnWriteArrayList<>();
private static SessionModificationCauseNotifier sSessionModificationCauseNotifier;
/**
* Returns a singleton instance of {@class SessionModificationCauseNotifier}
*/
public static synchronized SessionModificationCauseNotifier getInstance() {
if (sSessionModificationCauseNotifier == null) {
sSessionModificationCauseNotifier = new SessionModificationCauseNotifier();
}
return sSessionModificationCauseNotifier;
}
/**
* Adds a new session modification cause listener. Users interested in this cause
* should add a listener of type {@class InCallSessionModificationCauseListener}
*/
public void addListener(InCallSessionModificationCauseListener listener) {
Preconditions.checkNotNull(listener);
mSessionModificationCauseListeners.add(listener);
}
/**
* Removes an existing session modification cause listener. Users listening to any cause
* changes when not interested any more can de-register an existing listener of type
* {@class InCallSessionModificationCauseListener}
*/
public void removeListener(InCallSessionModificationCauseListener listener) {
if (listener != null) {
mSessionModificationCauseListeners.remove(listener);
} else {
Log.e(this, "Can't remove null listener");
}
}
/**
* Private constructor. Must use getInstance() to get this singleton.
*/
private SessionModificationCauseNotifier() {
}
/**
* Overrides onDetailsChanged method of {@class InCallDetailsListener}. We are
* notified when call details change and extract the session modification cause from the
* extras, detect if the cause has changed and notify all registered listeners.
*/
@Override
public void onDetailsChanged(Call call, android.telecom.Call.Details details) {
Log.d(this, "onDetailsChanged: - call: " + call + "details: " + details);
final Bundle extras = (call != null && details != null) ? details.getExtras() : null;
final int sessionModificationCause = (extras != null) ? extras.getInt(
QtiVideoCallConstants.SESSION_MODIFICATION_CAUSE_EXTRA_KEY,
QtiVideoCallConstants.CAUSE_CODE_UNSPECIFIED) :
QtiVideoCallConstants.CAUSE_CODE_UNSPECIFIED;
if (sessionModificationCause != QtiVideoCallConstants.CAUSE_CODE_UNSPECIFIED) {
Preconditions.checkNotNull(mSessionModificationCauseListeners);
for (InCallSessionModificationCauseListener listener :
mSessionModificationCauseListeners) {
listener.onSessionModificationCauseChanged(call, sessionModificationCause);
}
}
}
}
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