perfect-scrollbar-0.4.5.with-mousewheel.min.js

/*! perfect-scrollbar - v0.4.5
* http://noraesae.github.com/perfect-scrollbar/
* Copyright (c) 2013 HyeonJe Jun; Licensed MIT */
"use strict";(function(e){"function"==typeof define&&define.amd?define(["jquery"],e):e(jQuery)})(function(e){var r={wheelSpeed:10,wheelPropagation:!1,minScrollbarLength:null,useBothWheelAxes:!1,useKeyboard:!0};e.fn.perfectScrollbar=function(o,t){return this.each(function(){var l=e.extend(!0,{},r),n=e(this);if("object"==typeof o?e.extend(!0,l,o):t=o,"update"===t)return n.data("perfect-scrollbar-update")&&n.data("perfect-scrollbar-update")(),n;if("destroy"===t)return n.data("perfect-scrollbar-destroy")&&n.data("perfect-scrollbar-destroy")(),n;if(n.data("perfect-scrollbar"))return n.data("perfect-scrollbar");n.addClass("ps-container");var s,c,a,i,p,f,u,d,b,h,v=e("<div class='ps-scrollbar-x-rail'></div>").appendTo(n),g=e("<div class='ps-scrollbar-y-rail'></div>").appendTo(n),m=e("<div class='ps-scrollbar-x'></div>").appendTo(v),w=e("<div class='ps-scrollbar-y'></div>").appendTo(g),T=parseInt(v.css("bottom"),10),L=parseInt(g.css("right"),10),y=function(){var e=parseInt(h*(f-i)/(i-b),10);n.scrollTop(e),v.css({bottom:T-e})},I=function(){var e=parseInt(d*(p-a)/(a-u),10);n.scrollLeft(e),g.css({right:L-e})},D=function(e){return l.minScrollbarLength&&(e=Math.max(e,l.minScrollbarLength)),e},S=function(){v.css({left:n.scrollLeft(),bottom:T-n.scrollTop(),width:a}),g.css({top:n.scrollTop(),right:L-n.scrollLeft(),height:i}),m.css({left:d,width:u}),w.css({top:h,height:b})},x=function(){a=n.width(),i=n.height(),p=n.prop("scrollWidth"),f=n.prop("scrollHeight"),p>a?(s=!0,u=D(parseInt(a*a/p,10)),d=parseInt(n.scrollLeft()*(a-u)/(p-a),10)):(s=!1,u=0,d=0,n.scrollLeft(0)),f>i?(c=!0,b=D(parseInt(i*i/f,10)),h=parseInt(n.scrollTop()*(i-b)/(f-i),10)):(c=!1,b=0,h=0,n.scrollTop(0)),h>=i-b&&(h=i-b),d>=a-u&&(d=a-u),S()},C=function(e,r){var o=e+r,t=a-u;d=0>o?0:o>t?t:o,v.css({left:n.scrollLeft()}),m.css({left:d})},P=function(e,r){var o=e+r,t=i-b;h=0>o?0:o>t?t:o,g.css({top:n.scrollTop()}),w.css({top:h})},k=function(){var r,o;m.bind("mousedown.perfect-scrollbar",function(e){o=e.pageX,r=m.position().left,v.addClass("in-scrolling"),e.stopPropagation(),e.preventDefault()}),e(document).bind("mousemove.perfect-scrollbar",function(e){v.hasClass("in-scrolling")&&(I(),C(r,e.pageX-o),e.stopPropagation(),e.preventDefault())}),e(document).bind("mouseup.perfect-scrollbar",function(){v.hasClass("in-scrolling")&&v.removeClass("in-scrolling")}),r=o=null},X=function(){var r,o;w.bind("mousedown.perfect-scrollbar",function(e){o=e.pageY,r=w.position().top,g.addClass("in-scrolling"),e.stopPropagation(),e.preventDefault()}),e(document).bind("mousemove.perfect-scrollbar",function(e){g.hasClass("in-scrolling")&&(y(),P(r,e.pageY-o),e.stopPropagation(),e.preventDefault())}),e(document).bind("mouseup.perfect-scrollbar",function(){g.hasClass("in-scrolling")&&g.removeClass("in-scrolling")}),r=o=null},Y=function(){var e=function(e,r){var o=n.scrollTop();if(0===o&&r>0&&0===e)return!l.wheelPropagation;if(o>=f-i&&0>r&&0===e)return!l.wheelPropagation;var t=n.scrollLeft();return 0===t&&0>e&&0===r?!l.wheelPropagation:t>=p-a&&e>0&&0===r?!l.wheelPropagation:!0},r=!1;n.bind("mousewheel.perfect-scrollbar",function(o,t,a,i){l.useBothWheelAxes?c&&!s?i?n.scrollTop(n.scrollTop()-i*l.wheelSpeed):n.scrollTop(n.scrollTop()+a*l.wheelSpeed):s&&!c&&(a?n.scrollLeft(n.scrollLeft()+a*l.wheelSpeed):n.scrollLeft(n.scrollLeft()-i*l.wheelSpeed)):(n.scrollTop(n.scrollTop()-i*l.wheelSpeed),n.scrollLeft(n.scrollLeft()+a*l.wheelSpeed)),x(),r=e(a,i),r&&o.preventDefault()}),n.bind("MozMousePixelScroll.perfect-scrollbar",function(e){r&&e.preventDefault()})},M=function(){var r=function(e,r){var o=n.scrollTop();if(0===o&&r>0&&0===e)return!1;if(o>=f-i&&0>r&&0===e)return!1;var t=n.scrollLeft();return 0===t&&0>e&&0===r?!1:t>=p-a&&e>0&&0===r?!1:!0},o=!1;n.bind("mouseenter.perfect-scrollbar",function(){o=!0}),n.bind("mouseleave.perfect-scrollbar",function(){o=!1});var t=!1;e(document).bind("keydown.perfect-scrollbar",function(e){if(o){var s=0,c=0;switch(e.which){case 37:s=-3;break;case 38:c=3;break;case 39:s=3;break;case 40:c=-3;break;default:return}n.scrollTop(n.scrollTop()-c*l.wheelSpeed),n.scrollLeft(n.scrollLeft()+s*l.wheelSpeed),x(),t=r(s,c),t&&e.preventDefault()}})},E=function(){var e=function(e){e.stopPropagation()};w.bind("click.perfect-scrollbar",e),g.bind("click.perfect-scrollbar",function(e){var r=parseInt(b/2,10),o=e.pageY-g.offset().top-r,t=i-b,l=o/t;0>l?l=0:l>1&&(l=1),n.scrollTop((f-i)*l),x()}),m.bind("click.perfect-scrollbar",e),v.bind("click.perfect-scrollbar",function(e){var r=parseInt(u/2,10),o=e.pageX-v.offset().left-r,t=a-u,l=o/t;0>l?l=0:l>1&&(l=1),n.scrollLeft((p-a)*l),x()})},A=function(){var r=function(e,r){n.scrollTop(n.scrollTop()-r),n.scrollLeft(n.scrollLeft()-e),x()},o={},t=0,l={},s=null,c=!1;e(window).bind("touchstart.perfect-scrollbar",function(){c=!0}),e(window).bind("touchend.perfect-scrollbar",function(){c=!1}),n.bind("touchstart.perfect-scrollbar",function(e){var r=e.originalEvent.targetTouches[0];o.pageX=r.pageX,o.pageY=r.pageY,t=(new Date).getTime(),null!==s&&clearInterval(s),e.stopPropagation()}),n.bind("touchmove.perfect-scrollbar",function(e){if(!c&&1===e.originalEvent.targetTouches.length){var n=e.originalEvent.targetTouches[0],s={};s.pageX=n.pageX,s.pageY=n.pageY;var a=s.pageX-o.pageX,i=s.pageY-o.pageY;r(a,i),o=s;var p=(new Date).getTime();l.x=a/(p-t),l.y=i/(p-t),t=p,e.preventDefault()}}),n.bind("touchend.perfect-scrollbar",function(){clearInterval(s),s=setInterval(function(){return.01>Math.abs(l.x)&&.01>Math.abs(l.y)?(clearInterval(s),void 0):(r(30*l.x,30*l.y),l.x*=.8,l.y*=.8,void 0)},10)})},j=function(){n.unbind(".perfect-scrollbar"),e(window).unbind(".perfect-scrollbar"),e(document).unbind(".perfect-scrollbar"),n.data("perfect-scrollbar",null),n.data("perfect-scrollbar-update",null),n.data("perfect-scrollbar-destroy",null),m.remove(),w.remove(),v.remove(),g.remove(),m=w=a=i=p=f=u=d=T=b=h=L=null},W=function(r){n.addClass("ie").addClass("ie"+r);var o=function(){var r=function(){e(this).addClass("hover")},o=function(){e(this).removeClass("hover")};n.bind("mouseenter.perfect-scrollbar",r).bind("mouseleave.perfect-scrollbar",o),v.bind("mouseenter.perfect-scrollbar",r).bind("mouseleave.perfect-scrollbar",o),g.bind("mouseenter.perfect-scrollbar",r).bind("mouseleave.perfect-scrollbar",o),m.bind("mouseenter.perfect-scrollbar",r).bind("mouseleave.perfect-scrollbar",o),w.bind("mouseenter.perfect-scrollbar",r).bind("mouseleave.perfect-scrollbar",o)},t=function(){S=function(){m.css({left:d+n.scrollLeft(),bottom:T,width:u}),w.css({top:h+n.scrollTop(),right:L,height:b}),m.hide().show(),w.hide().show()},y=function(){var e=parseInt(h*f/i,10);n.scrollTop(e),m.css({bottom:T}),m.hide().show()},I=function(){var e=parseInt(d*p/a,10);n.scrollLeft(e),w.hide().show()}};6===r&&(o(),t())},H="ontouchstart"in window||window.DocumentTouch&&document instanceof window.DocumentTouch,B=function(){var e=navigator.userAgent.toLowerCase().match(/(msie) ([\w.]+)/);e&&"msie"===e[1]&&W(parseInt(e[2],10)),x(),k(),X(),E(),H&&A(),n.mousewheel&&Y(),l.useKeyboard&&M(),n.data("perfect-scrollbar",n),n.data("perfect-scrollbar-update",x),n.data("perfect-scrollbar-destroy",j)};return B(),n})}}),function(e){function r(r){var o=r||window.event,t=[].slice.call(arguments,1),l=0,n=0,s=0;return r=e.event.fix(o),r.type="mousewheel",o.wheelDelta&&(l=o.wheelDelta/120),o.detail&&(l=-o.detail/3),s=l,void 0!==o.axis&&o.axis===o.HORIZONTAL_AXIS&&(s=0,n=-1*l),void 0!==o.wheelDeltaY&&(s=o.wheelDeltaY/120),void 0!==o.wheelDeltaX&&(n=-1*o.wheelDeltaX/120),t.unshift(r,l,n,s),(e.event.dispatch||e.event.handle).apply(this,t)}var o=["DOMMouseScroll","mousewheel"];if(e.event.fixHooks)for(var t=o.length;t;)e.event.fixHooks[o[--t]]=e.event.mouseHooks;e.event.special.mousewheel={setup:function(){if(this.addEventListener)for(var e=o.length;e;)this.addEventListener(o[--e],r,!1);else this.onmousewheel=r},teardown:function(){if(this.removeEventListener)for(var e=o.length;e;)this.removeEventListener(o[--e],r,!1);else this.onmousewheel=null}},e.fn.extend({mousewheel:function(e){return e?this.bind("mousewheel",e):this.trigger("mousewheel")},unmousewheel:function(e){return this.unbind("mousewheel",e)}})}(jQuery);