{:uriI"Ìfile:///Users/byroot/workspace/shopify/shipit-engine/app/assets/javascripts/task/tty.js.coffee?type=application/javascript&pipeline=self&id=8e750bb9918bcfccb11336613a7a6db6a8a9fa8938f09f71e5e8c1b3ef95d30c:ET:load_pathI"I/Users/byroot/workspace/shopify/shipit-engine/app/assets/javascripts;T:filenameI"\/Users/byroot/workspace/shopify/shipit-engine/app/assets/javascripts/task/tty.js.coffee;T:	nameI"task/tty;T:logical_pathI"task/tty.self.js;T:content_typeI"application/javascript;T:sourceI"º	(function() {
  var Scrolling,
    bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };

  this.TTY = (function() {
    var FORMATTERS, STICKY_SCROLL_TOLERENCE;

    FORMATTERS = [];

    STICKY_SCROLL_TOLERENCE = 200;

    TTY.appendFormatter = function(formatter) {
      return FORMATTERS.push(formatter);
    };

    TTY.prependFormatter = function(formatter) {
      return FORMATTERS.unshift(formatter);
    };

    function TTY($body) {
      this.appendChunk = bind(this.appendChunk, this);
      this.$code = $body.find('code');
      this.scrolling = new Scrolling(this.$code);
    }

    TTY.prototype.popInitialOutput = function() {
      var output;
      output = this.$code.text();
      this.$code.empty();
      return output;
    };

    TTY.prototype.formatChunks = function(chunk) {
      var formatter, i, len;
      for (i = 0, len = FORMATTERS.length; i < len; i++) {
        formatter = FORMATTERS[i];
        chunk = formatter(chunk) || chunk;
      }
      return chunk;
    };

    TTY.prototype.appendChunk = function(chunk) {
      return this.scrolling.preserve((function(_this) {
        return function() {
          return _this.$code.append(_this.formatChunks(chunk.raw));
        };
      })(this));
    };

    return TTY;

  })();

  Scrolling = (function() {
    var TOLERENCE;

    TOLERENCE = 200;

    function Scrolling($code) {
      this.$code = $code;
      this.$window = $(window);
      this.initialScroll = true;
    }

    Scrolling.prototype.preserve = function(callback) {
      var wasScrolledToBottom;
      wasScrolledToBottom = this.isScrolledToBottom();
      callback();
      if (wasScrolledToBottom) {
        return this.$window.scrollTop(this.codeBottomPosition() - this.$window.height() + 50);
      }
    };

    Scrolling.prototype.isScrolledToBottom = function() {
      var codeBottom, ref;
      if (this.initialScroll) {
        this.initialScroll = window.pageYOffset === 0;
        return true;
      } else {
        codeBottom = this.codeBottomPosition();
        return (codeBottom + TOLERENCE > (ref = this.viewportBottomPosition()) && ref >= codeBottom - TOLERENCE);
      }
    };

    Scrolling.prototype.viewportBottomPosition = function() {
      return window.pageYOffset + this.$window.height();
    };

    Scrolling.prototype.codeBottomPosition = function() {
      return this.$code.position().top + this.$code.height();
    };

    return Scrolling;

  })();

}).call(this);
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