// 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, outer_width, 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;
		}
		outer_width = function (el) {
			var _el, computed, w;
			if (window.getComputedStyle) {
				_el = el[0];
				computed = window.getComputedStyle(el[0]);
				w = parseFloat(computed.getPropertyValue("width")) + parseFloat(computed.getPropertyValue("margin-left")) + parseFloat(computed.getPropertyValue("margin-right"));
				if (computed.getPropertyValue("box-sizing") !== "border-box") {
					w += parseFloat(computed.getPropertyValue("border-left-width")) + parseFloat(computed.getPropertyValue("border-right-width")) + parseFloat(computed.getPropertyValue("padding-left")) + parseFloat(computed.getPropertyValue("padding-right"));
				}
				return w;
			} else {
				return el.outerWidth(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: outer_width(elm),
						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);