// ==UserScript==

// @name          Gmail

// @description   Gmail (Mobile) Script

// @author        Charles L. Chen

// @include       https://mail.google.com/mail/s/*

// ==/UserScript==



var inputFocused = false;



function speak(textStr, queueMode, paramsArray){

  window.ttsHelper.speak(textStr, queueMode);

  //alert(textStr);

}



//TODO: Come up with a working escape sequence!

function keyPressHandler(evt){

  var keyCode = evt.keyCode;

  if (inputFocused){

    return true;

  }

  if (keyCode == 106) { // j

    window.setTimeout(speakCurrentMessage,0);

    return true;

  }

  if (keyCode == 107) { // k

    window.setTimeout(speakCurrentMessage,0);

    return true;

  }

  return true;

}



function findCurrentMessage(){

  var messageNodes = document.getElementsByClassName("a H Id");

  var message;

  for (var i=0; message = messageNodes[i]; i++){

    if (message.style.cssText.indexOf("visibility: visible;") != -1){

      return message.parentNode;

    }

  }

}



function speakCurrentMessage(){

  var message = findCurrentMessage();

  speak(message.textContent, 2, null);

}





function focusHandler(evt){

  if (evt.target.tagName && 

      evt.target.tagName == 'INPUT'){

      inputFocused = true;

      }

  return true;

}



function blurHandler(evt){

  inputFocused = false;

  return true;

}





document.addEventListener('keypress', keyPressHandler, true);

document.addEventListener('focus', focusHandler, true);

document.addEventListener('blur', blurHandler, true);