1 line
18 KiB
JavaScript
1 line
18 KiB
JavaScript
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(function(a,b){"object"==typeof exports&&"undefined"!=typeof module?module.exports=b():"function"==typeof define&&define.amd?define(b):(a=a||self,a.PerfectScrollbar=b())})(this,function(){'use strict';function a(a){return getComputedStyle(a)}function b(a,b){for(var c in b){var d=b[c];"number"==typeof d&&(d+="px"),a.style[c]=d}return a}function c(a){var b=document.createElement("div");return b.className=a,b}function d(a,b){if(!u)throw new Error("No element matching method supported");return u.call(a,b)}function e(a){a.remove?a.remove():a.parentNode&&a.parentNode.removeChild(a)}function f(a,b){return Array.prototype.filter.call(a.children,function(a){return d(a,b)})}function g(a,b){var c=a.element.classList,d=v.state.scrolling(b);c.contains(d)?clearTimeout(w[b]):c.add(d)}function h(a,b){w[b]=setTimeout(function(){return a.isAlive&&a.element.classList.remove(v.state.scrolling(b))},a.settings.scrollingThreshold)}function j(a,b){g(a,b),h(a,b)}function k(a){if("function"==typeof window.CustomEvent)return new CustomEvent(a);var b=document.createEvent("CustomEvent");return b.initCustomEvent(a,!1,!1,void 0),b}function l(a,b,c,d,e){void 0===d&&(d=!0),void 0===e&&(e=!1);var f;if("top"===b)f=["contentHeight","containerHeight","scrollTop","y","up","down"];else if("left"===b)f=["contentWidth","containerWidth","scrollLeft","x","left","right"];else throw new Error("A proper axis should be provided");m(a,c,f,d,e)}function m(a,b,c,d,e){var f=c[0],g=c[1],h=c[2],i=c[3],l=c[4],m=c[5];void 0===d&&(d=!0),void 0===e&&(e=!1);var n=a.element;a.reach[i]=null,1>n[h]&&(a.reach[i]="start"),n[h]>a[f]-a[g]-1&&(a.reach[i]="end"),b&&(n.dispatchEvent(k("ps-scroll-"+i)),0>b?n.dispatchEvent(k("ps-scroll-"+l)):0<b&&n.dispatchEvent(k("ps-scroll-"+m)),d&&j(a,i)),a.reach[i]&&(b||e)&&n.dispatchEvent(k("ps-"+i+"-reach-"+a.reach[i]))}function n(a){return parseInt(a,10)||0}function o(a){return d(a,"input,[contenteditable]")||d(a,"select,[contenteditable]")||d(a,"textarea,[contenteditable]")||d(a,"button,[contenteditable]")}function p(b){var c=a(b);return n(c.width)+n(c.paddingLeft)+n(c.paddingRight)+n(c.borderLeftWidth)+n(c.borderRightWidth)}function q(a){var b=a.element,c=Math.floor(b.scrollTop),d=b.getBoundingClientRect();a.containerWidth=Math.round(d.width),a.containerHeight=Math.round(d.height),a.contentWidth=b.scrollWidth,a.contentHeight=b.scrollHeight,b.contains(a.scrollbarXRail)||(f(b,v.element.rail("x")).forEach(function(a){return e(a)}),b.appendChild(a.scrollbarXRail)),b.contains(a.scrollbarYRail)||(f(b,v.element.rail("y")).forEach(function(a){return e(a)}),b.appendChild(a.scrollbarYRail)),!a.settings.suppressScrollX&&a.containerWidth+a.settings.scrollXMarginOffset<a.contentWidth?(a.scrollbarXActive=!0,a.railXWidth=a.containerWidth-a.railXMarginWidth,a.railXRatio=a.containerWidth/a.railXWidth,a.scrollbarXWidth=r(a,n(a.railXWidth*a.containerWidth/a.contentWidth)),a.scrollbarXLeft=n((a.negativeScrollAdjustment+b.scrollLeft)*(a.railXWidth-a.scrollbarXWidth)/(a.contentWidth-a.containerWidth))):a.scrollbarXActive=!1,!a.settings.suppressScrollY&&a.containerHeight+a.settings.scrollYMarginOffset<a.contentHeight?(a.scrollbarYActive=!0,a.railYHeight=a.containerHeight-a.railYMarginHeight,a.railYRatio=a.containerHeight/a.railYHeight,a.scrollbarYHeight=r(a,n(a.railYHeight*a.containerHeight/a.contentHeight)),a.scrollbarYTop=n(c*(a.railYHeight-a.scrollbarYHeight)/(a.contentHeight-a.containerHeight))):a.scrollbarYActive=!1,a.scrollbarXLeft>=a.railXWidth-a.scrollbarXWidth&&(a.scrollbarXLeft=a.railXWidth-a.scrollbarXWidth),a.scrollbarYTop>=a.railYHeight-a.scrollbarYHeight&&(a.scrollbarYTop=a.railYHeight-a.scrollbarYHeight),s(b,a),a.scrollbarXActive?b.classList.add(v.state.active("x")):(b.classList.remove(v.state.active("x")),a.scrollbarXWidth=0,a.scrollbarXLeft=0,b.scrollLeft=!0===a.isRtl?a.contentWidth:0),a.scrollbarYActive?b.classList.add(v.state.active("y")):(b.classList.remove(v.state.active("y")),a.scrollbarYHeight=0,a.scrollbarYTop=0,b.scrollTop=0)}function r(a,b){return a.settings.minScrollbarLength&&(b=Math.max(b,a.settings.minScrollbarLength)),a.settings.maxScroll
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