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$(function() {
  var ui = {
    bBeginning  : $("##{rawJS butBeginning}"),
    bBackward   : $("##{rawJS butBackward}"),
    bTogglePlay : $("##{rawJS butTogglePlay}"),
    bForward    : $("##{rawJS butForward}"),
    results     : $("##{rawJS results}")
  };
  var pollInterval = 10000;
  var playing = false;
  var timeout = 150;
  function poll() {
    sock.send("Poll");
    setTimeout(poll, pollInterval);
  };
  function forwardWait() {
    if (playing === true) {
      sock.send("Forward");
      setTimeout(forwardWait, timeout);
    }
  };
  function enableButtons(buttons) {
    for (var i = 0; i < buttons.length; i++) {
      buttons[i].removeAttr("disabled");
    };
  };
  function disableButtons(buttons) {
    for (var i = 0; i < buttons.length; i++) {
      buttons[i].attr("disabled", "disabled");
    };
  };
  function togglePlay() {
    var btns = [ui.bBeginning, ui.bBackward, ui.bForward];
    playing = !playing;
    if (playing === true) {
      disableButtons(btns);
      forwardWait();
    } else {
      enableButtons(btns);
    };
  };
  ui.bBeginning.on("click", function () {
    sock.send("Beginning");
  });
  ui.bBackward.on("click", function () {
    sock.send("Backward");
  });
  ui.bTogglePlay.on("click", function () {
    ui.bTogglePlay.children().toggleClass("glyphicon-play glyphicon-stop");
    togglePlay();
  });
  ui.bForward.on("click", function () {
    sock.send("Forward");
  });
  sock = new WebSocket("ws://" + window.location.host);
  sock.onopen = function (e) {
    enableButtons([ui.bBeginning, ui.bBackward,
                   ui.bTogglePlay, ui.bForward]);
    poll();
  };
  sock.onclose = function (e) {
    disableButtons([ui.bBeginning, ui.bBackward,
                    ui.bTogglePlay, ui.bForward]);
    alert("SOCKET CLOSED! D: (" + e.code + ")");
  };
  sock.onmessage = function (e) {
    // var data = JSON.parse(e.data);
    ui.results.html(e.data);
  };
  sock.onerror = function (e) {
    alert("ERROR! D: (" + e + ")");
  };
});