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package com.smartdevicelink.managers;
import android.support.annotation.NonNull;
import com.smartdevicelink.proxy.interfaces.ISdl;
import com.smartdevicelink.transport.utl.TransportRecord;
import java.util.List;
/**
* <strong>BaseSubManager</strong> <br>
*
* Note: This class is extended by SubManagers <br>
*
* It is broken down to these areas: <br>
*
* 1. <br>
*/
public abstract class BaseSubManager {
// states - if this gets more complicated we can move elsewhere
private int state;
private final Object STATE_LOCK = new Object();
public static final int SETTING_UP = 0x00, READY = 0x30, LIMITED = 0x50, SHUTDOWN = 0x80, ERROR = 0xC0;
protected final ISdl internalInterface;
private CompletionListener completionListener;
public BaseSubManager(@NonNull ISdl internalInterface){
this.internalInterface = internalInterface;
transitionToState(SETTING_UP);
}
/**
* Starts up a BaseSubManager, and calls provided callback once BaseSubManager is done setting up or failed setup.
* @param listener CompletionListener that is called once the BaseSubManager's state is READY, LIMITED, or ERROR
*/
public void start(CompletionListener listener){
this.completionListener = listener;
int state = getState();
if((state == READY || state == LIMITED || state == ERROR) && completionListener != null){
completionListener.onComplete(state == READY || state == LIMITED);
completionListener = null;
}
}
/**
* <p>Called when manager is being torn down</p>
*/
public void dispose(){
transitionToState(SHUTDOWN);
}
public void transitionToState(int state) {
synchronized (STATE_LOCK) {
this.state = state;
}
if((state == READY || state == LIMITED || state == ERROR) && completionListener != null ){
completionListener.onComplete(state == READY || state == LIMITED);
completionListener = null;
}
}
public int getState() {
synchronized (STATE_LOCK) {
return state;
}
}
//This allows the method to not be exposed to developers
protected void handleTransportUpdated(List<TransportRecord> connectedTransports, boolean audioStreamTransportAvail, boolean videoStreamTransportAvail){
this.onTransportUpdate(connectedTransports,audioStreamTransportAvail,videoStreamTransportAvail);
}
/**
* Transport status has been updated
* @param connectedTransports currently connected transports
* @param audioStreamTransportAvail if there is a transport that could be used to carry the
* audio service
* @param videoStreamTransportAvail if there is a transport that could be used to carry the
* video service
*/
protected void onTransportUpdate(List<TransportRecord> connectedTransports, boolean audioStreamTransportAvail, boolean videoStreamTransportAvail){}
}
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