forked from website/openpower.foundation
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1 line
12 KiB
JavaScript
1 line
12 KiB
JavaScript
4 years ago
|
!function(e,t,o,n){"use strict";t=void 0!==t&&t.Math==Math?t:"undefined"!=typeof self&&self.Math==Math?self:Function("return this")(),e.fn.sticky=function(i){var s,r=e(this),c=r.selector||"",l=(new Date).getTime(),a=[],f=arguments[0],m="string"==typeof f,u=[].slice.call(arguments,1);return r.each(function(){var r,d,h,g,p,b=e.isPlainObject(i)?e.extend(!0,{},e.fn.sticky.settings,i):e.extend({},e.fn.sticky.settings),v=b.className,x=b.namespace,C=b.error,S="."+x,y="module-"+x,k=e(this),z=e(t),T=e(b.scrollContext),w=(k.selector,k.data(y)),B=t.requestAnimationFrame||t.mozRequestAnimationFrame||t.webkitRequestAnimationFrame||t.msRequestAnimationFrame||function(e){setTimeout(e,0)},P=this;p={initialize:function(){p.determineContainer(),p.determineContext(),p.verbose("Initializing sticky",b,r),p.save.positions(),p.checkErrors(),p.bind.events(),b.observeChanges&&p.observeChanges(),p.instantiate()},instantiate:function(){p.verbose("Storing instance of module",p),w=p,k.data(y,p)},destroy:function(){p.verbose("Destroying previous instance"),p.reset(),h&&h.disconnect(),g&&g.disconnect(),z.off("load"+S,p.event.load).off("resize"+S,p.event.resize),T.off("scrollchange"+S,p.event.scrollchange),k.removeData(y)},observeChanges:function(){"MutationObserver"in t&&(h=new MutationObserver(p.event.documentChanged),g=new MutationObserver(p.event.changed),h.observe(o,{childList:!0,subtree:!0}),g.observe(P,{childList:!0,subtree:!0}),g.observe(d[0],{childList:!0,subtree:!0}),p.debug("Setting up mutation observer",g))},determineContainer:function(){r=b.container?e(b.container):k.offsetParent()},determineContext:function(){0!==(d=b.context?e(b.context):r).length||p.error(C.invalidContext,b.context,k)},checkErrors:function(){if(p.is.hidden()&&p.error(C.visible,k),p.cache.element.height>p.cache.context.height)return p.reset(),void p.error(C.elementSize,k)},bind:{events:function(){z.on("load"+S,p.event.load).on("resize"+S,p.event.resize),T.off("scroll"+S).on("scroll"+S,p.event.scroll).on("scrollchange"+S,p.event.scrollchange)}},event:{changed:function(e){clearTimeout(p.timer),p.timer=setTimeout(function(){p.verbose("DOM tree modified, updating sticky menu",e),p.refresh()},100)},documentChanged:function(t){[].forEach.call(t,function(t){t.removedNodes&&[].forEach.call(t.removedNodes,function(t){(t==P||e(t).find(P).length>0)&&(p.debug("Element removed from DOM, tearing down events"),p.destroy())})})},load:function(){p.verbose("Page contents finished loading"),B(p.refresh)},resize:function(){p.verbose("Window resized"),B(p.refresh)},scroll:function(){B(function(){T.triggerHandler("scrollchange"+S,T.scrollTop())})},scrollchange:function(e,t){p.stick(t),b.onScroll.call(P)}},refresh:function(e){p.reset(),b.context||p.determineContext(),e&&p.determineContainer(),p.save.positions(),p.stick(),b.onReposition.call(P)},supports:{sticky:function(){var t=e("<div/>");t[0];return t.addClass(v.supported),t.css("position").match("sticky")}},save:{lastScroll:function(e){p.lastScroll=e},elementScroll:function(e){p.elementScroll=e},positions:function(){var e={height:T.height()},t={margin:{top:parseInt(k.css("margin-top"),10),bottom:parseInt(k.css("margin-bottom"),10)},offset:k.offset(),width:k.outerWidth(),height:k.outerHeight()},o={offset:d.offset(),height:d.outerHeight()};r.outerHeight();p.is.standardScroll()||(p.debug("Non-standard scroll. Removing scroll offset from element offset"),e.top=T.scrollTop(),e.left=T.scrollLeft(),t.offset.top+=e.top,o.offset.top+=e.top,t.offset.left+=e.left,o.offset.left+=e.left),p.cache={fits:t.height+b.offset<=e.height,sameHeight:t.height==o.height,scrollContext:{height:e.height},element:{margin:t.margin,top:t.offset.top-t.margin.top,left:t.offset.left,width:t.width,height:t.height,bottom:t.offset.top+t.height},context:{top:o.offset.top,height:o.height,bottom:o.offset.top+o.height}},p.set.containerSize(),p.stick(),p.debug("Caching element positions",p.cache)}},get:{direction:function(e){var t="down";return e=e||T.scrollTop(),p.lastScroll!==n&&(p.lastScroll<e?t="down":p.lastScroll>e&&(t="up")),t},scrollChange:function(e){return e=e||T.scrollTo
|