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1 lines
9.0 KiB
!function(a,b,c,d){"use strict";a.fn.sticky=function(c){var e,f=a(this),g=f.selector||"",h=(new Date).getTime(),i=[],j=arguments[0],k="string"==typeof j,l=[].slice.call(arguments,1);return f.each(function(){var f,m,n,o=a.extend(!0,{},a.fn.sticky.settings,c),p=o.className,q=o.namespace,r=o.error,s="."+q,t="module-"+q,u=a(this),v=a(b),w=u.offsetParent(),x=a(o.scrollContext),y=(u.selector||"",u.data(t)),z=b.requestAnimationFrame||b.mozRequestAnimationFrame||b.webkitRequestAnimationFrame||b.msRequestAnimationFrame||function(a){setTimeout(a,0)},A=this;n={initialize:function(){return f=o.context?a(o.context):w,0===f.size()?void n.error(r.invalidContext,o.context,u):(n.verbose("Initializing sticky",o,w),n.save.positions(),n.is.hidden()&&n.error(r.visible,u),n.cache.element.height>n.cache.context.height?(n.reset(),void n.error(r.elementSize,u)):(v.on("resize"+s,n.event.resize),x.on("scroll"+s,n.event.scroll),n.observeChanges(),void n.instantiate()))},instantiate:function(){n.verbose("Storing 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a={height:v.height()},b={margin:{top:parseInt(u.css("margin-top"),10),bottom:parseInt(u.css("margin-bottom"),10)},offset:u.offset(),width:u.outerWidth(),height:u.outerHeight()},c={offset:f.offset(),height:f.outerHeight()};n.cache={fits:b.height<a.height,window:{height:a.height},element:{margin:b.margin,top:b.offset.top-b.margin.top,left:b.offset.left,width:b.width,height:b.height,bottom:b.offset.top+b.height},context:{top:c.offset.top,height:c.height,bottom:c.offset.top+c.height}},n.set.containerSize(),n.set.size(),n.stick(),n.debug("Caching element positions",n.cache)}},get:{direction:function(a){var b="down";return a=a||x.scrollTop(),n.lastScroll!==d&&(n.lastScroll<a?b="down":n.lastScroll>a&&(b="up")),b},scrollChange:function(a){return a=a||x.scrollTop(),n.lastScroll?a-n.lastScroll:0},currentElementScroll:function(){return n.is.top()?Math.abs(parseInt(u.css("top"),10))||0:Math.abs(parseInt(u.css("bottom"),10))||0},elementScroll:function(a){a=a||x.scrollTop();var 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