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📝 theia-sticky-sidebar.js

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/*!
 * Theia Sticky Sidebar v1.7.0
 * https://github.com/WeCodePixels/theia-sticky-sidebar
 *
 * Glues your website's sidebars, making them permanently visible while scrolling.
 *
 * Copyright 2013-2016 WeCodePixels and other contributors
 * Released under the MIT license
 */

!function(i){i.fn.theiaStickySidebar=function(t){function e(t,e){return!0===t.initialized||!(i("body").width()<t.minWidth)&&(function(t,e){t.initialized=!0,0===i("#theia-sticky-sidebar-stylesheet-"+t.namespace).length&&i("head").append(i('<style id="theia-sticky-sidebar-stylesheet-'+t.namespace+'">.theiaStickySidebar:after {content: ""; display: table; clear: both;}</style>'));e.each(function(){var e={};if(e.sidebar=i(this),e.options=t||{},e.container=i(e.options.containerSelector),0==e.container.length&&(e.container=e.sidebar.parent()),e.sidebar.parents().css("-webkit-transform","none"),e.sidebar.css({position:e.options.defaultPosition,overflow:"visible","-webkit-box-sizing":"border-box","-moz-box-sizing":"border-box","box-sizing":"border-box"}),e.stickySidebar=e.sidebar.find(".theiaStickySidebar"),0==e.stickySidebar.length){var a=/(?:text|application)\/(?:x-)?(?:javascript|ecmascript)/i;e.sidebar.find("script").filter(function(i,t){return 0===t.type.length||t.type.match(a)}).remove(),e.stickySidebar=i("<div>").addClass("theiaStickySidebar").append(e.sidebar.children()),e.sidebar.append(e.stickySidebar)}e.marginBottom=parseInt(e.sidebar.css("margin-bottom")),e.paddingTop=parseInt(e.sidebar.css("padding-top")),e.paddingBottom=parseInt(e.sidebar.css("padding-bottom"));var n=e.stickySidebar.offset().top,s=e.stickySidebar.outerHeight();function d(){e.fixedScrollTop=0,e.sidebar.css({"min-height":"1px"}),e.stickySidebar.css({position:"static",width:"",transform:"none"})}e.stickySidebar.css("padding-top",1),e.stickySidebar.css("padding-bottom",1),n-=e.stickySidebar.offset().top,s=e.stickySidebar.outerHeight()-s-n,0==n?(e.stickySidebar.css("padding-top",0),e.stickySidebarPaddingTop=0):e.stickySidebarPaddingTop=1,0==s?(e.stickySidebar.css("padding-bottom",0),e.stickySidebarPaddingBottom=0):e.stickySidebarPaddingBottom=1,e.previousScrollTop=null,e.fixedScrollTop=0,d(),e.onScroll=function(e){if(e.stickySidebar.is(":visible"))if(i("body").width()<e.options.minWidth)d();else{if(e.options.disableOnResponsiveLayouts){var a=e.sidebar.outerWidth("none"==e.sidebar.css("float"));if(a+50>e.container.width())return void d()}var n,s,r=i(document).scrollTop(),c="static";if(r>=e.sidebar.offset().top+(e.paddingTop-e.options.additionalMarginTop)){var p,b=e.paddingTop+t.additionalMarginTop,l=e.paddingBottom+e.marginBottom+t.additionalMarginBottom,f=e.sidebar.offset().top,h=e.sidebar.offset().top+(n=e.container,s=n.height(),n.children().each(function(){s=Math.max(s,i(this).height())}),s),g=0+t.additionalMarginTop,S=e.stickySidebar.outerHeight()+b+l<i(window).height();p=S?g+e.stickySidebar.outerHeight():i(window).height()-e.marginBottom-e.paddingBottom-t.additionalMarginBottom;var u=f-r+e.paddingTop,m=h-r-e.paddingBottom-e.marginBottom,y=e.stickySidebar.offset().top-r,k=e.previousScrollTop-r;"fixed"==e.stickySidebar.css("position")&&"modern"==e.options.sidebarBehavior&&(y+=k),"stick-to-top"==e.options.sidebarBehavior&&(y=t.additionalMarginTop),"stick-to-bottom"==e.options.sidebarBehavior&&(y=p-e.stickySidebar.outerHeight()),y=k>0?Math.min(y,g):Math.max(y,p-e.stickySidebar.outerHeight()),y=Math.max(y,u),y=Math.min(y,m-e.stickySidebar.outerHeight());var v=e.container.height()==e.stickySidebar.outerHeight();c=(v||y!=g)&&(v||y!=p-e.stickySidebar.outerHeight())?r+y-e.sidebar.offset().top-e.paddingTop<=t.additionalMarginTop?"static":"absolute":"fixed"}if("fixed"==c){var x=i(document).scrollLeft();e.stickySidebar.css({position:"fixed",width:o(e.stickySidebar)+"px",transform:"translateY("+y+"px)",left:e.sidebar.offset().left+parseInt(e.sidebar.css("padding-left"))-x+"px",top:"0px"})}else if("absolute"==c){var T={};"absolute"!=e.stickySidebar.css("position")&&(T.position="absolute",T.transform="translateY("+(r+y-e.sidebar.offset().top-e.stickySidebarPaddingTop-e.stickySidebarPaddingBottom)+"px)",T.top="0px"),T.width=o(e.stickySidebar)+"px",T.left="",e.stickySidebar.css(T)}else"static"==c&&d();"static"!=c&&1==e.options.updateSidebarHeight&&e.sidebar.css({"min-height":e.stickySidebar.outerHeight()+e.stickySidebar.offset().top-e.sidebar.offset().top+e.paddingBottom}),e.previousScrollTop=r}},e.onScroll(e),i(document).on("scroll."+e.options.namespace,function(i){return function(){i.onScroll(i)}}(e)),i(window).on("resize."+e.options.namespace,function(i){return function(){i.stickySidebar.css({position:"static"}),i.onScroll(i)}}(e)),"undefined"!=typeof ResizeSensor&&new ResizeSensor(e.stickySidebar[0],function(i){return function(){i.onScroll(i)}}(e))})}(t,e),!0)}function o(i){var t;try{t=i[0].getBoundingClientRect().width}catch(i){}return void 0===t&&(t=i.width()),t}return(t=i.extend({containerSelector:"",additionalMarginTop:0,additionalMarginBottom:0,updateSidebarHeight:!0,minWidth:0,disableOnResponsiveLayouts:!0,sidebarBehavior:"modern",defaultPosition:"relative",namespace:"TSS"},t)).additionalMarginTop=parseInt(t.additionalMarginTop)||0,t.additionalMarginBottom=parseInt(t.additionalMarginBottom)||0,function(t,o){e(t,o)||(console.log("TSS: Body width smaller than options.minWidth. Init is delayed."),i(document).on("scroll."+t.namespace,function(t,o){return function(a){var n=e(t,o);n&&i(this).unbind(a)}}(t,o)),i(window).on("resize."+t.namespace,function(t,o){return function(a){var n=e(t,o);n&&i(this).unbind(a)}}(t,o)))}(t,this),this}}(jQuery);

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