// Generated by CoffeeScript 1.9.2

/**

@license Sticky-kit v1.1.2 | WTFPL | Leaf Corcoran 2015 | http://leafo.net

 */

(function() {

  var $, win;

  $ = this.jQuery || window.jQuery;

  win = $(window);

  $.fn.stick_in_parent = function(opts) {

    var doc, elm, enable_bottoming, fn, i, inner_scrolling, len, manual_spacer, offset_top, parent_selector, recalc_every, sticky_class;

    if (opts == null) {

      opts = {};

    }

    sticky_class = opts.sticky_class, inner_scrolling = opts.inner_scrolling, recalc_every = opts.recalc_every, parent_selector = opts.parent, offset_top = opts.offset_top, manual_spacer = opts.spacer, enable_bottoming = opts.bottoming;

    if (offset_top == null) {

      offset_top = 0;

    }

    if (parent_selector == null) {

      parent_selector = void 0;

    }

    if (inner_scrolling == null) {

      inner_scrolling = true;

    }

    if (sticky_class == null) {

      sticky_class = "is_stuck";

    }

    doc = $(document);

    if (enable_bottoming == null) {

      enable_bottoming = true;

    }

    fn = function(elm, padding_bottom, parent_top, parent_height, top, height, el_float, detached) {

      var bottomed, detach, fixed, last_pos, last_scroll_height, offset, parent, recalc, recalc_and_tick, recalc_counter, spacer, tick;

      if (elm.data("sticky_kit")) {

        return;

      }

      elm.data("sticky_kit", true);

      last_scroll_height = doc.height();

      parent = elm.parent();

      if (parent_selector != null) {

        parent = parent.closest(parent_selector);

      }

      if (!parent.length) {

        throw "failed to find stick parent";

      }

      fixed = false;

      bottomed = false;

      spacer = manual_spacer != null ? manual_spacer && elm.closest(manual_spacer) : $("<div />");

      if (spacer) {

        spacer.css('position', elm.css('position'));

      }

      recalc = function() {

        var border_top, padding_top, restore;

        if (detached) {

          return;

        }

        last_scroll_height = doc.height();

        border_top = parseInt(parent.css("border-top-width"), 10);

        padding_top = parseInt(parent.css("padding-top"), 10);

        padding_bottom = parseInt(parent.css("padding-bottom"), 10);

        parent_top = parent.offset().top + border_top + padding_top;

        parent_height = parent.height();

        if (fixed) {

          fixed = false;

          bottomed = false;

          if (manual_spacer == null) {

            elm.insertAfter(spacer);

            spacer.detach();

          }

          elm.css({

            position: "",

            top: "",

            width: "",

            bottom: ""

          }).removeClass(sticky_class);

          restore = true;

        }

        top = elm.offset().top - (parseInt(elm.css("margin-top"), 10) || 0) - offset_top;

        height = elm.outerHeight(true);

        el_float = elm.css("float");

        if (spacer) {

          spacer.css({

            width: elm.outerWidth(true),

            height: height,

            display: elm.css("display"),

            "vertical-align": elm.css("vertical-align"),

            "float": el_float

          });

        }

        if (restore) {

          return tick();

        }

      };

      recalc();

      if (height === parent_height) {

        return;

      }

      last_pos = void 0;

      offset = offset_top;

      recalc_counter = recalc_every;

      tick = function() {

        var css, delta, recalced, scroll, will_bottom, win_height;

        if (detached) {

          return;

        }

        recalced = false;

        if (recalc_counter != null) {

          recalc_counter -= 1;

          if (recalc_counter <= 0) {

            recalc_counter = recalc_every;

            recalc();

            recalced = true;

          }

        }

        if (!recalced && doc.height() !== last_scroll_height) {

          recalc();

          recalced = true;

        }

        scroll = win.scrollTop();

        if (last_pos != null) {

          delta = scroll - last_pos;

        }

        last_pos = scroll;

        if (fixed) {

          if (enable_bottoming) {

            will_bottom = scroll + height + offset > parent_height + parent_top;

            if (bottomed && !will_bottom) {

              bottomed = false;

              elm.css({

                position: "fixed",

                bottom: "",

                top: offset

              }).trigger("sticky_kit:unbottom");

            }

          }

          if (scroll < top) {

            fixed = false;

            offset = offset_top;

            if (manual_spacer == null) {

              if (el_float === "left" || el_float === "right") {

                elm.insertAfter(spacer);

              }

              spacer.detach();

            }

            css = {

              position: "",

              width: "",

              top: ""

            };

            elm.css(css).removeClass(sticky_class).trigger("sticky_kit:unstick");

          }

          if (inner_scrolling) {

            win_height = win.height();

            if (height + offset_top > win_height) {

              if (!bottomed) {

                offset -= delta;

                offset = Math.max(win_height - height, offset);

                offset = Math.min(offset_top, offset);

                if (fixed) {

                  elm.css({

                    top: offset + "px"

                  });

                }

              }

            }

          }

        } else {

          if (scroll > top) {

            fixed = true;

            css = {

              position: "fixed",

              top: offset

            };

            css.width = elm.css("box-sizing") === "border-box" ? elm.outerWidth() + "px" : elm.width() + "px";

            elm.css(css).addClass(sticky_class);

            if (manual_spacer == null) {

              elm.after(spacer);

              if (el_float === "left" || el_float === "right") {

                spacer.append(elm);

              }

            }

            elm.trigger("sticky_kit:stick");

          }

        }

        if (fixed && enable_bottoming) {

          if (will_bottom == null) {

            will_bottom = scroll + height + offset > parent_height + parent_top;

          }

          if (!bottomed && will_bottom) {

            bottomed = true;

            if (parent.css("position") === "static") {

              parent.css({

                position: "relative"

              });

            }

            return elm.css({

              position: "absolute",

              bottom: padding_bottom,

              top: "auto"

            }).trigger("sticky_kit:bottom");

          }

        }

      };

      recalc_and_tick = function() {

        recalc();

        return tick();

      };

      detach = function() {

        detached = true;

        win.off("touchmove", tick);

        win.off("scroll", tick);

        win.off("resize", recalc_and_tick);

        $(document.body).off("sticky_kit:recalc", recalc_and_tick);

        elm.off("sticky_kit:detach", detach);

        elm.removeData("sticky_kit");

        elm.css({

          position: "",

          bottom: "",

          top: "",

          width: ""

        });

        parent.position("position", "");

        if (fixed) {

          if (manual_spacer == null) {

            if (el_float === "left" || el_float === "right") {

              elm.insertAfter(spacer);

            }

            spacer.remove();

          }

          return elm.removeClass(sticky_class);

        }

      };

      win.on("touchmove", tick);

      win.on("scroll", tick);

      win.on("resize", recalc_and_tick);

      $(document.body).on("sticky_kit:recalc", recalc_and_tick);

      elm.on("sticky_kit:detach", detach);

      return setTimeout(tick, 0);

    };

    for (i = 0, len = this.length; i < len; i++) {

      elm = this[i];

      fn($(elm));

    }

    return this;

  };

}).call(this);