antagonist-0.1.0.1: play.js

function getNews()
{
  var req = mkRequestor();
  req.open("POST","@{toMaster NewsR}",true);
  req.setRequestHeader("Accept","application/json");
  req.send();
  window.setTimeout("getNews()",500);
}
getNews();
function postLine(line) {
  var req = mkRequestor();
  req.open("POST","@{toMaster PutR}",true);
  req.setRequestHeader("Accept","application/json");
  req.setRequestHeader("Content-type","application/x-www-form-urlencoded");
  req.send("line="+encodeURIComponent(line));
}
function mkRequestor() {
  var req;
  if (window.XMLHttpRequest)
  {
    req=new XMLHttpRequest();
  }
  else
  {
    req=new ActiveXObject("Microsoft.XMLHTTP");
  }
  req.onreadystatechange=function()
  {
    if (req.readyState==4 && req.status==200)
    {
      var res = eval("("+req.responseText+")");
      if (res.news != "") {
        var cons = document.getElementById("cons");
        cons.innerHTML+=res.news;
        cons.scrollTop = cons.scrollHeight;
      }
      document.getElementById("prom").textContent = res.prompt;
      fixwidth();
    }
  }
  return req;
}
var hist = new Array();
var histIdx = -1;
function keypress(e){
  if (!e) e = window.event;
  var keyCode = e.keyCode || e.which;
  var inp = document.getElementById("inp");
  if (keyCode == '13'){ // enter
    postLine(inp.value);
    if (inp.value != "" && (hist.length == 0 || hist[0] != inp.value))
      hist.unshift(inp.value);
    histIdx = -1;
    inp.value = "";
  } else if (keyCode == '38') { // up
    if ((histIdx+1) < hist.length) {
      histIdx++;
      inp.value = hist[histIdx];
    }
  } else if (keyCode == '40') { // down
    if (histIdx >= 0) {
      histIdx--;
      if (histIdx >= 0) inp.value = hist[histIdx];
      else inp.value = "";
    }
  }
}
document.getElementById("inp").onkeypress = keypress;
function fixwidth() {
  document.getElementById("inp").style.width = (window.innerWidth - document.getElementById("prom").offsetWidth - 12)+"px";
}
fixwidth();