WebAPI/WebIccManager/Multi-SIM

Proposal: WebIccManager API for Multi-SIM

Currently B2G supports a single SIM architecture. This proposal wants to extend WebIccManager to support multi-SIMs. In multi-SIM device, each SIM card is independent and has it own information and operation. Here we introduce multiple nsIDOMMozIcc objects, each instance represents a icc card, you can use iccId as index to get corresponding icc object from nsIDOMMozIccManager.

Web API

 interface nsIDOMMozIcc : nsIDOMEventTarget
 {
   readonly attribute nsIDOMMozMobileICCInfo iccInfo;
   readonly attribute DOMString cardState;
   readonly attribute long retryCount;
 
   nsIDOMDOMRequest getCardLock(in DOMString lockType);
   nsIDOMDOMRequest unlockCardLock(in jsval info);
   nsIDOMDOMRequest setCardLock(in jsval info);
 
   void sendStkResponse(in jsval command, in jsval response);
   void sendStkMenuSelection(in unsigned short itemIdentifier, in boolean helpRequested);
   void sendStkTimerExpiration(in jsval timer);
   void sendStkEventDownload(in jsval event);
 
   nsIDOMDOMRequest readContacts(in DOMString contactType);
   nsIDOMDOMRequest updateContact(in DOMString contactType, in nsIDOMContact contact, [optional] in DOMString pin2);
 
   nsIDOMDOMRequest iccOpenChannel(in DOMString aid);
   nsIDOMDOMRequest iccExchangeAPDU(in long channel, in jsval apdu);
   nsIDOMDOMRequest iccCloseChannel(in long channe);
 
   [implicit_jscontext] attribute jsval onstkcommand;
   [implicit_jscontext] attribute jsval onstksessionend;
   [implicit_jscontext] attribute jsval onicccardlockerror;
   [implicit_jscontext] attribute jsval oniccinfochange;
   [implicit_jscontext] attribute jsval oncardstatechange;
 }

 interface nsIDOMMozIccManager : nsIDOMEventTarget
 {
   readonly attribute jsval iccIds;
   nsIDOMMozIcc getIccById(in DOMString iccId);
 
   [implicit_jscontext] attribute jsval oniccadd;
   [implicit_jscontext] attribute jsval oniccremove;
 }

Use Case

Stk

• Current B2G:

   var icc = navigator.mozMobileConnection.icc;
   icc.onstkcommand = function (evt) {
     var command = evt.command;
     switch (command.typeOfCommand) {
       ...
     }
   }

   icc.sendStkResponse(command, response);

• Multi-SIM:

   var iccManager = navigator.mozIccManager;
   var icc = iccManager.getIccById(iccId);
   icc.onstkcommand = function (evt) {
     var command = evt.command;
     switch (command.typeOfCommand) {
       ...
     }
   }

   icc.sendStkResponse(command, response);

Enumerate icc cards inserted in device

• iccIds:

   var iccIds = navigator.mozIccManager.iccIds;
   for (let iccId in iccIds) {
     var icc = navigator.mozIccManager.getIccById(iccId);
     ....
   }

• Nmber of icc cards which is inserted in device:

  var numberOfIcc = navigator.mozIccManager.iccIds.length;