/*! Copyright (c) 2011 Piotr Rochala (http://rocha.la)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * Version: 1.3.0
 *
 */
(function(f) {
	jQuery.fn.extend({
		slimScroll: function(h) {
			var a = f.extend({
				width: "auto",
				height: "250px",
				size: "4px",
				color: "#000",
				position: "right",
				distance: "1px",
				start: "top",
				opacity: 0.4,
				alwaysVisible: !1,
				disableFadeOut: !1,
				railVisible: !1,
				railColor: "#333",
				railOpacity: 0.2,
				railDraggable: !0,
				railClass: "slimScrollRail",
				barClass: "slimScrollBar",
				wrapperClass: "slimScrollDiv",
				allowPageScroll: !1,
				wheelStep: 20,
				touchScrollStep: 200,
				borderRadius: "7px",
				railBorderRadius: "7px"
			}, h);
			this.each(function() {
				function r(d) {
					if (s) {
						d = d ||
							window.event;
						var c = 0;
						d.wheelDelta && (c = -d.wheelDelta / 120);
						d.detail && (c = d.detail / 3);
						f(d.target || d.srcTarget || d.srcElement).closest("." + a.wrapperClass).is(b.parent()) && m(c, !0);
						// 解决 [Intervention] Unable to preventDefault inside passive event listener due to target being treated as passive.
						// d.preventDefault && !k && d.preventDefault();
						k || (d.returnValue = !1)
					}
				}

				function m(d, f, h) {
					k = !1;
					var e = d,
						g = b.outerHeight() - c.outerHeight();
					f && (e = parseInt(c.css("top")) + d * parseInt(a.wheelStep) / 100 * c.outerHeight(), e = Math.min(Math.max(
						e, 0), g), e = 0 < d ? Math.ceil(e) : Math.floor(e), c.css({
						top: e + "px"
					}));
					l = parseInt(c.css("top")) / (b.outerHeight() - c.outerHeight());
					e = l * (b[0].scrollHeight - b.outerHeight());
					h && (e = d, d = e / b[0].scrollHeight * b.outerHeight(), d = Math.min(Math.max(d, 0), g), c.css({
						top: d + "px"
					}));
					b.scrollTop(e);
					b.trigger("slimscrolling", ~~e);
					v();
					p()
				}

				function C() {
					window.addEventListener ? (this.addEventListener("DOMMouseScroll", r, !1), this.addEventListener(
						"mousewheel", r, !1), this.addEventListener("MozMousePixelScroll", r, !1)) : document.attachEvent(
						"onmousewheel", r)
				}

				function w() {
					u = Math.max(b.outerHeight() / b[0].scrollHeight * b.outerHeight(), D);
					c.css({
						height: u + "px"
					});
					var a = u == b.outerHeight() ? "none" : "block";
					c.css({
						display: a
					})
				}

				function v() {
					w();
					clearTimeout(A);
					l == ~~l ? (k = a.allowPageScroll, B != l && b.trigger("slimscroll", 0 == ~~l ? "top" : "bottom")) : k = !1;
					B = l;
					u >= b.outerHeight() ? k = !0 : (c.stop(!0, !0).fadeIn("fast"), a.railVisible && g.stop(!0, !0).fadeIn(
						"fast"))
				}

				function p() {
					a.alwaysVisible || (A = setTimeout(function() {
						a.disableFadeOut && s || (x || y) || (c.fadeOut("slow"), g.fadeOut("slow"))
					}, 1E3))
				}
				var s, x, y, A, z, u, l, B, D = 30,
					k = !1,
					b = f(this);
				if (b.parent().hasClass(a.wrapperClass)) {
					var n = b.scrollTop(),
						c = b.parent().find("." + a.barClass),
						g = b.parent().find("." + a.railClass);
					w();
					if (f.isPlainObject(h)) {
						if ("height" in h && "auto" == h.height) {
							b.parent().css("height", "auto");
							b.css("height", "auto");
							var q = b.parent().parent().height();
							b.parent().css("height", q);
							b.css("height", q)
						}
						if ("scrollTo" in h) n = parseInt(a.scrollTo);
						else if ("scrollBy" in h) n += parseInt(a.scrollBy);
						else if ("destroy" in h) {
							c.remove();
							g.remove();
							b.unwrap();
							return
						}
						m(n, !1, !0)
					}
				} else {
					a.height = "auto" == a.height ? b.parent().height() : a.height;
					n = f("<div></div>").addClass(a.wrapperClass).css({
						position: "relative",
						width: a.width,
						height: a.height
					});
					b.css({
						width: a.width,
						height: a.height
					});
					var g = f("<div></div>").addClass(a.railClass).css({
							width: a.size,
							height: "100%",
							position: "absolute",
							top: 0,
							display: a.alwaysVisible && a.railVisible ? "block" : "none",
							"border-radius": a.railBorderRadius,
							background: a.railColor,
							opacity: a.railOpacity,
							zIndex: 90
						}),
						c = f("<div></div>").addClass(a.barClass).css({
							background: a.color,
							width: a.size,
							position: "absolute",
							top: 0,
							opacity: a.opacity,
							display: a.alwaysVisible ?
								"block" : "none",
							"border-radius": a.borderRadius,
							BorderRadius: a.borderRadius,
							MozBorderRadius: a.borderRadius,
							WebkitBorderRadius: a.borderRadius,
							zIndex: 99
						}),
						q = "right" == a.position ? {
							right: a.distance
						} : {
							left: a.distance
						};
					g.css(q);
					c.css(q);
					b.wrap(n);
					b.parent().append(c);
					b.parent().append(g);
					a.railDraggable && c.bind("mousedown", function(a) {
						var b = f(document);
						y = !0;
						t = parseFloat(c.css("top"));
						pageY = a.pageY;
						b.bind("mousemove.slimscroll", function(a) {
							currTop = t + a.pageY - pageY;
							c.css("top", currTop);
							m(0, c.position().top, !1)
						});
						b.bind("mouseup.slimscroll", function(a) {
							y = !1;
							p();
							b.unbind(".slimscroll")
						});
						return !1
					}).bind("selectstart.slimscroll", function(a) {
						a.stopPropagation();
						a.preventDefault();
						return !1
					});
					g.hover(function() {
						v()
					}, function() {
						p()
					});
					c.hover(function() {
						x = !0
					}, function() {
						x = !1
					});
					b.hover(function() {
						s = !0;
						v();
						p()
					}, function() {
						s = !1;
						p()
					});
					b.bind("touchstart", function(a, b) {
						a.originalEvent.touches.length && (z = a.originalEvent.touches[0].pageY)
					});
					b.bind("touchmove", function(b) {
						k || b.originalEvent.preventDefault();
						b.originalEvent.touches.length &&
							(m((z - b.originalEvent.touches[0].pageY) / a.touchScrollStep, !0), z = b.originalEvent.touches[0].pageY)
					});
					w();
					"bottom" === a.start ? (c.css({
						top: b.outerHeight() - c.outerHeight()
					}), m(0, !0)) : "top" !== a.start && (m(f(a.start).position().top, null, !0), a.alwaysVisible || c.hide());
					C()
				}
			});
			return this
		}
	});
	jQuery.fn.extend({
		slimscroll: jQuery.fn.slimScroll
	})
})(jQuery);