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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 org.codeaurora.QtiVideoCallConstants;
import android.os.Bundle;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.List;
import com.google.common.base.Preconditions;
import com.android.incallui.InCallPresenter.InCallDetailsListener;
/**
* 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 call substate has changed and notify the {@class InCallMessageController} to
* display the indication on UI.
*
*/
public class CallSubstateNotifier implements InCallDetailsListener {
private final List<InCallSubstateListener> mCallSubstateListeners =
new CopyOnWriteArrayList<>();
private static CallSubstateNotifier sCallSubstateNotifier;
private int mCallSubstate = QtiVideoCallConstants.CALL_SUBSTATE_NONE;
/**
* This method returns a singleton instance of {@class CallSubstateNotifier}
*/
public static synchronized CallSubstateNotifier getInstance() {
if (sCallSubstateNotifier == null) {
sCallSubstateNotifier = new CallSubstateNotifier();
}
return sCallSubstateNotifier;
}
/**
* This method adds a new call substate listener. Users interested in listening to call
* substate changes should add a listener of type {@class InCallSubstateListener}
*/
public void addListener(InCallSubstateListener listener) {
Preconditions.checkNotNull(listener);
mCallSubstateListeners.add(listener);
}
/**
* This method removes an existing call substate listener. Users listening to call
* substate changes when not interested any more can de-register an existing listener of type
* {@class InCallSubstateListener}
*/
public void removeListener(InCallSubstateListener listener) {
if (listener != null) {
mCallSubstateListeners.remove(listener);
} else {
Log.e(this, "Can't remove null listener");
}
}
/**
* Private constructor. Must use getInstance() to get this singleton.
*/
private CallSubstateNotifier() {
}
/**
* This method overrides onDetailsChanged method of {@class InCallDetailsListener}. We are
* notified when call details change and extract the call substate from the extras, detect if
* call substate 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 callSubstate = (extras != null) ? extras.getInt(
QtiVideoCallConstants.CALL_SUBSTATE_EXTRA_KEY,
QtiVideoCallConstants.CALL_SUBSTATE_NONE) :
QtiVideoCallConstants.CALL_SUBSTATE_NONE;
if (callSubstate != mCallSubstate) {
mCallSubstate = callSubstate;
Preconditions.checkNotNull(mCallSubstateListeners);
for (InCallSubstateListener listener : mCallSubstateListeners) {
listener.onCallSubstateChanged(call, mCallSubstate);
}
}
}
}
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