jQuery line/word dimensions

gistfile1.js

(function($) {
  var deNthWordize, mode, nthWordize;
  nthWordize = function(el) {
    var $escaper, $this, $tns, textNode, textNodes, _i, _len;
    $this = $(el);
    textNodes = $this.find(":not(iframe)").andSelf().contents().filter(function() {
      return this.nodeType === 3;
    });
    for (_i = 0, _len = textNodes.length; _i < _len; _i++) {
      textNode = textNodes[_i];
      if ($.trim(textNode.textContent)) {
        $(textNode).wrap("<span class='text_node'></span>");
      }
    }
    $tns = $([]);
    $escaper = $("<div>");
    $this.find(".text_node:visible").each(function() {
      var $tn, savedHtml, word, words, wrappedWords;
      $tn = $(this);
      savedHtml = $tn.html();
      words = $tn.text().split(/\s+/);
      wrappedWords = ((function() {
        var _j, _len2, _results;
        _results = [];
        for (_j = 0, _len2 = words.length; _j < _len2; _j++) {
          word = words[_j];
          _results.push((word ? "<span class='nth_word'>" + ($escaper.text(word).html()) + "</span>" : ""));
        }
        return _results;
      })()).join(" ");
      $tn.data("saved-html", savedHtml).html(wrappedWords);
      return $tns = $tns.add($tn);
    });
    return $tns;
  };
  deNthWordize = function(els) {
    return $(els).each(function() {
      var $tn;
      $tn = $(this);
      $tn.html($tn.data("saved-html"));
      $tn.removeData("saved-html");
      return $tn.contents().unwrap();
    });
  };
  $.fn.nthWordDimensions = function(n) {
    var $target, $textNodes, $this, result;
    $this = $(this);
    $textNodes = nthWordize($this);
    if (n === "last") {
      $target = $this.find(".nth_word:last");
    } else if (n === "first") {
      $target = $this.find(".nth_word:first");
    } else {
      $target = $this.find(".nth_word:eq(" + n + ")");
    }
    if ($target.length) {
      result = {
        top: $target.offset().top,
        right: $target.offset().left + $target.width(),
        bottom: $target.offset().top + $target.height(),
        left: $target.offset().left,
        width: $target.width(),
        height: $target.height()
      };
    } else {
      result = {
        top: 0,
        right: 0,
        bottom: 0,
        left: 0,
        width: 0,
        height: 0
      };
    }
    deNthWordize($textNodes);
    return result;
  };
  $.fn.nthLineDimensions = function(n) {
    var $firstInLine, $lastInLine, $lastWord, $textNodes, $this, $words, lastX, result;
    $this = $(this);
    $textNodes = nthWordize($this);
    $words = $this.find(".nth_word");
    lastX = 1000000;
    $lastWord = null;
    $words.each(function() {
      var $word;
      $word = $(this);
      if ($word.text() && ($word.offset().left < lastX || ($lastWord && $word.offset().left === lastX && $word.offset().top >= $lastWord.offset().top + $lastWord.height()) || ($lastWord.width() >= $this.width() && $lastWord.height() >= $word.height() * 2))) {
        $word.addClass("first_in_line");
        if ($lastWord) {
          $lastWord.addClass("last_in_line");
        }
        lastX = $word.offset().left;
      }
      return $lastWord = $word;
    });
    $words.filter(":last").addClass("last_in_line");
    if (n === "first") {
      $firstInLine = $this.find(".first_in_line:first");
    } else if (n === "last") {
      $firstInLine = $this.find(".first_in_line:last");
    } else {
      $firstInLine = $this.find(".first_in_line:eq(" + n + ")");
    }
    if ($firstInLine.is(".last_in_line")) {
      $lastInLine = $firstInLine;
    } else {
      $lastInLine = $firstInLine.nextAll(".last_in_line:first");
    }
    if ($firstInLine.length) {
      result = {
        top: $firstInLine.offset().top,
        right: $lastInLine.offset().left + $lastInLine.width(),
        bottom: $firstInLine.offset().top + $firstInLine.height(),
        left: $firstInLine.offset().left,
        width: $lastInLine.offset().left + $lastInLine.width() - $firstInLine.offset().left,
        height: $firstInLine.height()
      };
    } else {
      result = {
        top: $this.offset().top,
        right: $this.offset().left,
        bottom: $this.offset().top,
        left: $this.offset().left,
        width: 0,
        height: 0
      };
    }
    deNthWordize($textNodes);
    return result;
  };
  return mode = function(array) {
    var el, i, maxCount, maxEl, modeMap, _ref;
    if (!(array && array.length)) {
      return null;
    }
    modeMap = {};
    maxEl = array[0];
    maxCount = 1;
    for (i = 0, _ref = array.length; 0 <= _ref ? i < _ref : i > _ref; 0 <= _ref ? i++ : i--) {
      el = array[i];
      if (modeMap[el]) {
        modeMap[el]++;
      } else {
        modeMap[el] = 1;
      }
      if (modeMap[el] > maxCount) {
        maxEl = el;
        maxCount = modeMap[el];
      }
    }
    return maxEl;
  };
})(jQuery);