// Expanding Textareas
  // https://github.com/bgrins/ExpandingTextareas
  
  (function(factory) {
      // Add jQuery via AMD registration or browser globals
      if (typeof define === 'function' && define.amd) {
          define([ 'jquery' ], factory);
      }
      else {
          factory(jQuery);
      }
  }(function ($) {
      $.expandingTextarea = $.extend({
          autoInitialize: true,
          initialSelector: "textarea.expanding",
          opts: {
              resize: function() { }
          }
      }, $.expandingTextarea || {});
  
      var cloneCSSProperties = [
          'lineHeight', 'textDecoration', 'letterSpacing',
          'fontSize', 'fontFamily', 'fontStyle',
          'fontWeight', 'textTransform', 'textAlign',
          'direction', 'wordSpacing', 'fontSizeAdjust',
          'wordWrap',
          'borderLeftWidth', 'borderRightWidth',
          'borderTopWidth','borderBottomWidth',
          'paddingLeft', 'paddingRight',
          'paddingTop','paddingBottom',
          'marginLeft', 'marginRight',
          'marginTop','marginBottom',
          'boxSizing', 'webkitBoxSizing', 'mozBoxSizing', 'msBoxSizing'
      ];
  
      var textareaCSS = {
          position: "absolute",
          height: "100%",
          resize: "none"
      };
  
      var preCSS = {
          visibility: "hidden",
          border: "0 solid",
          whiteSpace: "pre-wrap"
      };
  
      var containerCSS = {
          position: "relative"
      };
  
      function resize() {
          $(this).closest('.expandingText').find("div").text(this.value + ' ');
          $(this).trigger("resize.expanding");
      }
  
      $.fn.expandingTextarea = function(o) {
  
          var opts = $.extend({ }, $.expandingTextarea.opts, o);
  
          if (o === "resize") {
              return this.trigger("input.expanding");
          }
  
          if (o === "destroy") {
              this.filter(".expanding-init").each(function() {
                  var textarea = $(this).removeClass('expanding-init');
                  var container = textarea.closest('.expandingText');
  
                  container.before(textarea).remove();
                  textarea
                      .attr('style', textarea.data('expanding-styles') || '')
                      .removeData('expanding-styles');
              });
  
              return this;
          }
  
          this.filter("textarea").not(".expanding-init").addClass("expanding-init").each(function() {
              var textarea = $(this);
  
              textarea.wrap("<div class='expandingText'></div>");
              textarea.after("<pre class='textareaClone'><div></div></pre>");
  
              var container = textarea.parent().css(containerCSS);
              var pre = container.find("pre").css(preCSS);
  
              // Store the original styles in case of destroying.
              textarea.data('expanding-styles', textarea.attr('style'));
              textarea.css(textareaCSS);
  
              $.each(cloneCSSProperties, function(i, p) {
                  var val = textarea.css(p);
  
                  // Only set if different to prevent overriding percentage css values.
                  if (pre.css(p) !== val) {
                      pre.css(p, val);
                  }
              });
  
              textarea.bind("input.expanding propertychange.expanding", resize);
              resize.apply(this);
  
              if (opts.resize) {
                  textarea.bind("resize.expanding", opts.resize);
              }
          });
  
          return this;
      };
  
      $(function () {
          if ($.expandingTextarea.autoInitialize) {
              $($.expandingTextarea.initialSelector).expandingTextarea();
          }
      });
  
  }));