jquery.fs.scroller.min.js

/* 
 * Scroller v3.0.4 - 2014-04-08 
 * A jQuery plugin for replacing default browser scrollbars. Part of the Formstone Library. 
 * http://formstone.it/scroller/ 
 * 
 * Copyright 2014 Ben Plum; MIT Licensed 
 */ 

!function(a,b){"use strict";function c(b){b=a.extend({},l,b||{}),null===k&&(k=a("body"));for(var c=a(this),e=0,f=c.length;f>e;e++)d(c.eq(e),b);return c}function d(c,d){if(!c.hasClass("scroller")){d=a.extend({},d,c.data("scroller-options"));var h="";h+='<div class="scroller-bar">',h+='<div class="scroller-track">',h+='<div class="scroller-handle">',h+="</div></div></div>",d.paddingRight=parseInt(c.css("padding-right"),10),d.paddingBottom=parseInt(c.css("padding-bottom"),10),c.addClass(d.customClass+" scroller").wrapInner('<div class="scroller-content" />').prepend(h),d.horizontal&&c.addClass("scroller-horizontal");var i=a.extend({$scroller:c,$content:c.find(".scroller-content"),$bar:c.find(".scroller-bar"),$track:c.find(".scroller-track"),$handle:c.find(".scroller-handle")},d);i.trackMargin=parseInt(i.trackMargin,10),i.$content.on("scroll.scroller",i,e),i.$scroller.on("touchstart.scroller mousedown.scroller",".scroller-track",i,f).on("touchstart.scroller mousedown.scroller",".scroller-handle",i,g).data("scroller",i),m.reset.apply(c),a(b).one("load",function(){m.reset.apply(c)})}}function e(a){a.preventDefault(),a.stopPropagation();var b=a.data;if(b.horizontal){var c=b.$content.scrollLeft();0>c&&(c=0);var d=c/b.scrollRatio;d>b.handleBounds.right&&(d=b.handleBounds.right),b.$handle.css({left:d})}else{var e=b.$content.scrollTop();0>e&&(e=0);var f=e/b.scrollRatio;f>b.handleBounds.bottom&&(f=b.handleBounds.bottom),b.$handle.css({top:f})}}function f(a){a.preventDefault(),a.stopPropagation();var b=a.data,c=a.originalEvent,d=b.$track.offset(),e="undefined"!=typeof c.targetTouches?c.targetTouches[0]:null,f=e?e.pageX:a.clientX,g=e?e.pageY:a.clientY;b.horizontal?(b.mouseStart=f,b.handleLeft=f-d.left-b.handleWidth/2,j.apply(b.$scroller,[b,b.handleLeft])):(b.mouseStart=g,b.handleTop=g-d.top-b.handleHeight/2,j.apply(b.$scroller,[b,b.handleTop])),b.$content.off(".scroller"),k.on("touchmove.scroller mousemove.scroller",b,h).on("touchend.scroller mouseup.scroller",b,i)}function g(a){a.preventDefault(),a.stopPropagation();var b=a.data,c=a.originalEvent,d="undefined"!=typeof c.targetTouches?c.targetTouches[0]:null,e=d?d.pageX:a.clientX,f=d?d.pageY:a.clientY;b.horizontal?(b.mouseStart=e,b.handleLeft=parseInt(b.$handle.css("left"),10)):(b.mouseStart=f,b.handleTop=parseInt(b.$handle.css("top"),10)),b.$content.off(".scroller"),k.on("touchmove.scroller mousemove.scroller",b,h).on("touchend.scroller mouseup.scroller",b,i)}function h(a){a.preventDefault(),a.stopPropagation();var b=a.data,c=a.originalEvent,d=0,e=0,f="undefined"!=typeof c.targetTouches?c.targetTouches[0]:null,g=f?f.pageX:a.clientX,h=f?f.pageY:a.clientY;b.horizontal?(e=b.mouseStart-g,d=b.handleLeft-e):(e=b.mouseStart-h,d=b.handleTop-e),j.apply(b.$scroller,[b,d])}function i(a){a.preventDefault(),a.stopPropagation();var b=a.data;b.$content.on("scroll.scroller",b,e),k.off(".scroller")}function j(a,b){if(a.horizontal){b<a.handleBounds.left&&(b=a.handleBounds.left),b>a.handleBounds.right&&(b=a.handleBounds.right);var c=Math.round(b*a.scrollRatio);a.$handle.css({left:b}),a.$content.scrollLeft(c)}else{b<a.handleBounds.top&&(b=a.handleBounds.top),b>a.handleBounds.bottom&&(b=a.handleBounds.bottom);var d=Math.round(b*a.scrollRatio);a.$handle.css({top:b}),a.$content.scrollTop(d)}}var k=null,l={customClass:"",duration:0,handleSize:0,horizontal:!1,trackMargin:0},m={defaults:function(b){return l=a.extend(l,b||{}),a(this)},destroy:function(){return a(this).each(function(b,c){var d=a(c).data("scroller");d&&(d.$scroller.removeClass(d.customClass).removeClass("scroller").removeClass("scroller-active"),d.$bar.remove(),d.$content.contents().unwrap(),d.$content.off(".scroller"),d.$scroller.off(".scroller").removeData("scroller"))})},scroll:function(b,c){return a(this).each(function(){var d=a(this).data("scroller"),e=c||l.duration;if("number"!=typeof b){var f=a(b);if(f.length>0){var g=f.position();b=d.horizontal?g.left+d.$content.scrollLeft():g.top+d.$content.scrollTop()}else b=d.$content.scrollTop()}d.horizontal?d.$content.stop().animate({scrollLeft:b},e):d.$content.stop().animate({scrollTop:b},e)})},reset:function(){return a(this).each(function(){var b=a(this).data("scroller");if(b){if(b.$scroller.addClass("scroller-setup"),b.horizontal){b.barHeight=b.$content[0].offsetHeight-b.$content[0].clientHeight,b.frameWidth=b.$content.outerWidth(),b.trackWidth=b.frameWidth-2*b.trackMargin,b.scrollWidth=b.$content[0].scrollWidth,b.ratio=b.trackWidth/b.scrollWidth,b.trackRatio=b.trackWidth/b.scrollWidth,b.handleWidth=b.handleSize>0?b.handleSize:b.trackWidth*b.trackRatio,b.scrollRatio=(b.scrollWidth-b.frameWidth)/(b.trackWidth-b.handleWidth),b.handleBounds={left:0,right:b.trackWidth-b.handleWidth},b.$content.css({paddingBottom:b.barHeight+b.paddingBottom});var c=b.$content.scrollLeft(),d=c*b.ratio;b.scrollWidth<=b.frameWidth?b.$scroller.removeClass("scroller-active"):b.$scroller.addClass("scroller-active"),b.$bar.css({width:b.frameWidth}),b.$track.css({width:b.trackWidth,marginLeft:b.trackMargin,marginRight:b.trackMargin}),b.$handle.css({width:b.handleWidth}),j.apply(b.$scroller,[b,d])}else{b.barWidth=b.$content[0].offsetWidth-b.$content[0].clientWidth,b.frameHeight=b.$content.outerHeight(),b.trackHeight=b.frameHeight-2*b.trackMargin,b.scrollHeight=b.$content[0].scrollHeight,b.ratio=b.trackHeight/b.scrollHeight,b.trackRatio=b.trackHeight/b.scrollHeight,b.handleHeight=b.handleSize>0?b.handleSize:b.trackHeight*b.trackRatio,b.scrollRatio=(b.scrollHeight-b.frameHeight)/(b.trackHeight-b.handleHeight),b.handleBounds={top:0,bottom:b.trackHeight-b.handleHeight};var e=b.$content.scrollTop(),f=e*b.ratio;b.scrollHeight<=b.frameHeight?b.$scroller.removeClass("scroller-active"):b.$scroller.addClass("scroller-active"),b.$bar.css({height:b.frameHeight}),b.$track.css({height:b.trackHeight,marginBottom:b.trackMargin,marginTop:b.trackMargin}),b.$handle.css({height:b.handleHeight}),j.apply(b.$scroller,[b,f])}b.$scroller.removeClass("scroller-setup")}})}};a.fn.scroller=function(a){return m[a]?m[a].apply(this,Array.prototype.slice.call(arguments,1)):"object"!=typeof a&&a?this:c.apply(this,arguments)},a.scroller=function(a){"defaults"===a&&m.defaults.apply(this,Array.prototype.slice.call(arguments,1))}}(jQuery);