webview.js

/*
  Global variables
*/

var webviewEl;
var uuid = "46ab76a3-bccd-4f29-a528-f03ba64a0589";
var g_devices;
var device;
var socketId = null;
var connected = false;
var dialing;
var socketError;

/*
  Utility Functions
*/

function ab2str(buf) {
  return String.fromCharCode.apply(null, new Uint16Array(buf));
}

function str2ab(str) {
  var buf = new ArrayBuffer(str.length*2); // 2 bytes for each char
  var bufView = new Uint16Array(buf);
  for (var i=0, strLen=str.length; i < strLen; i++) {
    bufView[i] = str.charCodeAt(i);
  }
  return buf;
}

function bluetoothMsg(str, error) {
  webviewEl.contentWindow.postMessage({bluetooth: true, msg: str, error: error}, "*");
}

/*
  Bluetooth support functions
*/

var onConnectedCallback = function() {
  if (chrome.runtime.lastError) {
    if (chrome.runtime.lastError.message.indexOf("(0x2750)") != -1) {
      bluetoothMsg(device.name+" not connected");
    }
    else {
      bluetoothMsg(chrome.runtime.lastError.message+"<hr>", true);
    }
    
    // Check if we have any more devices and try them otherwise just report failure
    device = g_devices.shift();
    if (device) {
      chrome.bluetoothSocket.create(onSocketCreate);
    }
    else {
      bluetoothMsg("failure", true);
    }
  } 
  else {
    setTimeout(function() {
      dialing = true;
      bluetoothMsg("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Dialing test number...");
      chrome.bluetoothSocket.send(socketId, str2ab("17070"), sending);
    }, 1000);
  }
};

function onSocketCreate(createInfo) {
  socketId = createInfo.socketId;
  if (device.uuids.indexOf(uuid) != -1 && device.paired) {
    bluetoothMsg("Connecting to <b>"+device.name+"</b>");
    chrome.bluetoothSocket.connect(createInfo.socketId, device.address, uuid, onConnectedCallback);
  }
  else {
    console.log("Device does not support CatiDialer");
  }
}

function sending(bytes_sent) {
  if (chrome.runtime.lastError) {
    failed_to_send(chrome.runtime.lastError.message);
  }
  else {
    connected = true;
    if (dialing) {
        dialing = false;
        setTimeout(function() {
          bluetoothMsg("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ending test dial...");
          chrome.bluetoothSocket.send(socketId, str2ab("hangup"), sending);
          setTimeout(function() {
            if (!socketError) {
              bluetoothMsg("success");
              chrome.runtime.getBackgroundPage(function(bg) {
                bg.socketId = socketId;
              });
            }
          }, 1000);
        }, 4500);
    }
  }
}

function failed_to_send(msg) {
  connected = false;
  if (!socketError) {
    if (msg.indexOf("Socket not connected") != -1) {
      bluetoothMsg("Socket not connected", true);
      socketError = true;
      if (dialing) {
        dialing = false;
        bluetoothMsg("failure", true);
      }
    }
    else {
      bluetoothMsg("Failed to send: "+msg, true);
    }
  }
}

chrome.bluetoothSocket.onReceiveError.addListener(function(errorInfo) {
  // Cause is in errorInfo.error.
  console.log(errorInfo.errorMessage);
});
  
function initializeBluetooth() {
  
  connected = false;
  socketError = false;
  
  if (socketId) {
    chrome.bluetoothSocket.disconnect(socketId);
    socketId = null;
  }
  
  chrome.bluetooth.getDevices(function(devices) {

    if (devices.length === 0) {
      bluetoothMsg("Sorry, no devices found", true);
      bluetoothMsg("failure", true);
      setTimeout(function () {bluetoothMsg("clear messages");}, 3000);
    }
    else {
      g_devices = devices;
      device = g_devices.shift();
      while (device && (device.uuids.indexOf(uuid) == -1 || !device.paired)) {
        device = g_devices.shift();
      }
      
      if (device) { 
        chrome.bluetoothSocket.create(onSocketCreate);
      }
      else {
        bluetoothMsg("Sorry, no compatible devices found", true);
        bluetoothMsg("failure", true);
        setTimeout(function () {bluetoothMsg("clear messages");}, 3000);
      }
    }
  });

}


/*
  Reports errors back from the Cati Web component to this Chrome Applicaton
*/

var messageHandler = function(event) {
  console.log(event.data);
  if (event.data.statusChange) {
    chrome.runtime.getBackgroundPage(function (bg) {
      bg.email = event.data.email;
    });
  }
  
  if (event.data.dial) {
    chrome.bluetoothSocket.send(socketId, str2ab(event.data.dial), sending);
  }
  
  if (event.data.bluetooth) {
    if (event.data.enabled) {
      initializeBluetooth();
    }
    else {
      chrome.bluetoothSocket.disconnect(socketId);
      socketId = null;
      bluetoothMsg("clear messages");
    }
  }
  
  if (event.data.ajaxError) {
    var html = null;
    switch (event.data.status) {
      case 0:
        html = "<div style='font-size:200%;margin:20px;background-color:#800000;color:#ffffff;padding:6px'>Network Error<div style='background-color:#ffffff;color:#000000;padding:6px'>Sorry, there is a problem with the network.<br>Close the Interviewer Console and resolve the problem.</div></div>";
        break;
      case 500:
        html = "<div style='font-size:200%;margin:20px;background-color:#000080;color:#ffffff;padding:6px'>System Error<div style='background-color:#ffffff;color:#000000;padding:6px'>Sorry, there is a problem with the system.<br>Please report this to your interviewing manager as soon as possible.</div></div>";
        break;
      default:
        html = "<div style='font-size:200%;margin:20px;background-color:#800000;color:#ffffff;padding:6px'>Unexpected Error<div style='background-color:#ffffff;color:#000000;padding:6px'>Sorry, an unexpected error has occurred.<br>Please report this to your interviewing manager as soon as possible.</div></div>";
        break;
    }
    document.getElementById("catiWebView").contentWindow.postMessage({html: html}, "*");
  }
};

window.removeEventListener('message', messageHandler, false);
window.addEventListener('message', messageHandler, false);

webviewEl = document.getElementById("catiWebView");

webviewEl.addEventListener("contentload", function() {
  webviewEl.contentWindow.postMessage("From APP", "*");
  
});