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(function ($) {
$.fn.extend({
slimScroll: function (options) {
var defaults = {
width: "auto",
height: "250px",
size: "7px",
color: "#000",
position: "right",
distance: "1px",
start: "top",
opacity: .4,
alwaysVisible: false,
disableFadeOut: false,
railVisible: false,
railColor: "#333",
railOpacity: .2,
railDraggable: true,
railClass: "slimScrollRail",
barClass: "slimScrollBar",
wrapperClass: "slimScrollDiv",
allowPageScroll: false,
wheelStep: 20,
touchScrollStep: 200,
borderRadius: "7px",
railBorderRadius: "7px"
};
var o = $.extend(defaults, options);
this.each(function () {
var isOverPanel, isOverBar, isDragg, queueHide, touchDif, barHeight, percentScroll, lastScroll,
divS = "<div></div>", minBarHeight = 30, releaseScroll = false;
var me = $(this);
if (me.parent().hasClass(o.wrapperClass)) {
var offset = me.scrollTop();
bar = me.parent().find("." + o.barClass);
rail = me.parent().find("." + o.railClass);
getBarHeight();
if ($.isPlainObject(options)) {
if ("height" in options && options.height == "auto") {
me.parent().css("height", "auto");
me.css("height", "auto");
var height = me.parent().parent().height();
me.parent().css("height", height);
me.css("height", height)
}
if ("scrollTo" in options) {
offset = parseInt(o.scrollTo)
} else if ("scrollBy" in options) {
offset += parseInt(o.scrollBy)
} else if ("destroy" in options) {
bar.remove();
rail.remove();
me.unwrap();
return
}
scrollContent(offset, false, true)
}
return
} else if ($.isPlainObject(options)) {
if ("destroy" in options) {
return
}
}
o.height = o.height == "auto" ? me.parent().height() : o.height;
var wrapper = $(divS).addClass(o.wrapperClass).css({
position: "relative",
overflow: "hidden",
width: o.width,
height: o.height
});
me.css({overflow: "hidden", width: o.width, height: o.height, "-ms-touch-action": "none"});
var rail = $(divS).addClass(o.railClass).css({
width: o.size,
height: "100%",
position: "absolute",
top: 0,
display: o.alwaysVisible && o.railVisible ? "block" : "none",
"border-radius": o.railBorderRadius,
background: o.railColor,
opacity: o.railOpacity,
zIndex: 90
});
var bar = $(divS).addClass(o.barClass).css({
background: o.color,
width: o.size,
position: "absolute",
top: 0,
opacity: o.opacity,
display: o.alwaysVisible ? "block" : "none",
"border-radius": o.borderRadius,
BorderRadius: o.borderRadius,
MozBorderRadius: o.borderRadius,
WebkitBorderRadius: o.borderRadius,
zIndex: 99
});
var posCss = o.position == "right" ? {right: o.distance} : {left: o.distance};
rail.css(posCss);
bar.css(posCss);
me.wrap(wrapper);
me.parent().append(bar);
me.parent().append(rail);
if (o.railDraggable) {
bar.bind("mousedown", function (e) {
var $doc = $(document);
isDragg = true;
t = parseFloat(bar.css("top"));
pageY = e.pageY;
$doc.bind("mousemove.slimscroll", function (e) {
currTop = t + e.pageY - pageY;
bar.css("top", currTop);
scrollContent(0, bar.position().top, false)
});
$doc.bind("mouseup.slimscroll", function (e) {
isDragg = false;
hideBar();
$doc.unbind(".slimscroll")
});
return false
}).bind("selectstart.slimscroll", function (e) {
e.stopPropagation();
e.preventDefault();
return false
})
}
rail.hover(function () {
showBar()
}, function () {
hideBar()
});
bar.hover(function () {
isOverBar = true
}, function () {
isOverBar = false
});
me.hover(function () {
isOverPanel = true;
showBar();
hideBar()
}, function () {
isOverPanel = false;
hideBar()
});
if (window.navigator.msPointerEnabled) {
me.bind("MSPointerDown", function (e, b) {
if (e.originalEvent.targetTouches.length) {
touchDif = e.originalEvent.targetTouches[0].pageY
}
});
me.bind("MSPointerMove", function (e) {
e.originalEvent.preventDefault();
if (e.originalEvent.targetTouches.length) {
var diff = (touchDif - e.originalEvent.targetTouches[0].pageY) / o.touchScrollStep;
scrollContent(diff, true);
touchDif = e.originalEvent.targetTouches[0].pageY
}
})
} else {
me.bind("touchstart", function (e, b) {
if (e.originalEvent.touches.length) {
touchDif = e.originalEvent.touches[0].pageY
}
});
me.bind("touchmove", function (e) {
if (!releaseScroll) {
e.originalEvent.preventDefault()
}
if (e.originalEvent.touches.length) {
var diff = (touchDif - e.originalEvent.touches[0].pageY) / o.touchScrollStep;
scrollContent(diff, true);
touchDif = e.originalEvent.touches[0].pageY
}
})
}
getBarHeight();
if (o.start === "bottom") {
bar.css({top: me.outerHeight() - bar.outerHeight()});
scrollContent(0, true)
} else if (o.start !== "top") {
scrollContent($(o.start).position().top, null, true);
if (!o.alwaysVisible) {
bar.hide()
}
}
attachWheel();
function _onWheel(e) {
if (!isOverPanel) {
return
}
var e = e || window.event;
var delta = 0;
if (e.wheelDelta) {
delta = -e.wheelDelta / 120
}
if (e.detail) {
delta = e.detail / 3
}
var target = e.target || e.srcTarget || e.srcElement;
if ($(target).closest("." + o.wrapperClass).is(me.parent())) {
scrollContent(delta, true)
}
if (e.preventDefault && !releaseScroll) {
e.preventDefault()
}
if (!releaseScroll) {
e.returnValue = false
}
}
function scrollContent(y, isWheel, isJump) {
releaseScroll = false;
var delta = y;
var maxTop = me.outerHeight() - bar.outerHeight();
if (isWheel) {
delta = parseInt(bar.css("top")) + y * parseInt(o.wheelStep) / 100 * bar.outerHeight();
delta = Math.min(Math.max(delta, 0), maxTop);
delta = y > 0 ? Math.ceil(delta) : Math.floor(delta);
bar.css({top: delta + "px"})
}
percentScroll = parseInt(bar.css("top")) / (me.outerHeight() - bar.outerHeight());
delta = percentScroll * (me[0].scrollHeight - me.outerHeight());
if (isJump) {
delta = y;
var offsetTop = delta / me[0].scrollHeight * me.outerHeight();
offsetTop = Math.min(Math.max(offsetTop, 0), maxTop);
bar.css({top: offsetTop + "px"})
}
me.scrollTop(delta);
me.trigger("slimscrolling", ~~delta);
showBar();
hideBar()
}
function attachWheel() {
if (window.addEventListener) {
this.addEventListener("DOMMouseScroll", _onWheel, false);
this.addEventListener("mousewheel", _onWheel, false)
} else {
document.attachEvent("onmousewheel", _onWheel)
}
}
function getBarHeight() {
barHeight = Math.max(me.outerHeight() / me[0].scrollHeight * me.outerHeight(), minBarHeight);
bar.css({height: barHeight + "px"});
var display = barHeight == me.outerHeight() ? "none" : "block";
bar.css({display: display})
}
function showBar() {
getBarHeight();
clearTimeout(queueHide);
if (percentScroll == ~~percentScroll) {
releaseScroll = o.allowPageScroll;
if (lastScroll != percentScroll) {
var msg = ~~percentScroll == 0 ? "top" : "bottom";
me.trigger("slimscroll", msg)
}
} else {
releaseScroll = false
}
lastScroll = percentScroll;
if (barHeight >= me.outerHeight()) {
releaseScroll = true;
return
}
bar.stop(true, true).fadeIn("fast");
if (o.railVisible) {
rail.stop(true, true).fadeIn("fast")
}
}
function hideBar() {
if (!o.alwaysVisible) {
queueHide = setTimeout(function () {
if (!(o.disableFadeOut && isOverPanel) && !isOverBar && !isDragg) {
bar.fadeOut("slow");
rail.fadeOut("slow")
}
}, 1e3)
}
}
});
return this
}
});
$.fn.extend({slimscroll: $.fn.slimScroll})
})(jQuery);