hugo-theme-relearn/js/mathjax/ui/lazy.js

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t.concat(a||Array.prototype.slice.call(e))},u=this&&this.__values||function(t){var e="function"==typeof Symbol&&Symbol.iterator,r=e&&t[e],a=0;if(r)return r.call(t);if(t&&"number"==typeof t.length)return{next:function(){return t&&a>=t.length&&(t=void 0),{value:t&&t[a++],done:!t}}};throw new TypeError(e?"Object is not iterable.":"Symbol.iterator is not defined.")};Object.defineProperty(e,"__esModule",{value:!0}),e.LazyHandler=e.LazyMathDocumentMixin=e.LazyMathItemMixin=e.LAZYID=e.LazyList=void 0;var c=r(769),h=r(239),p=function(){function t(){this.id=0,this.items=new Map}return t.prototype.add=function(t){var e=String(this.id++);return this.items.set(e,t),e},t.prototype.get=function(t){return this.items.get(t)},t.prototype.delete=function(t){return this.items.delete(t)},t}();function f(t){return function(t){function r(){for(var e=[],r=0;r<arguments.length;r++)e[r]=arguments[r];var a=t.apply(this,y([],s(e),!1))||this;return 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r=function(t){function r(){for(var e=[],r=0;r<arguments.length;r++)e[r]=arguments[r];var a=t.apply(this,y([],s(e),!1))||this;a.lazyAlwaysContainers=null,a.lazyAlwaysIndex=0,a.lazyPromise=Promise.resolve(),a.lazyIdle=!1,a.lazySet=new Set,a.options.MathItem=f(a.options.MathItem);var n=a.constructor.ProcessBits;!n.has("lazyAlways")&&n.allocate("lazyAlways"),a.lazyObserver=new IntersectionObserver(a.lazyObserve.bind(a),{rootMargin:a.options.lazyMargin}),a.lazyList=new p;var o=a.lazyHandleSet.bind(a);if(a.lazyProcessSet=window&&window.requestIdleCallback?function(){return window.requestIdleCallback(o)}:function(){return setTimeout(o,10)},window){var i=!1,l=function(){!i&&a.lazyTypesetAll(),i=!0};window.matchMedia("print").addListener(l),window.addEventListener("beforeprint",l)}return a}return n(r,t),r.prototype.lazyAlways=function(){var t,e;if(this.lazyAlwaysContainers&&!this.processed.isSet("lazyAlways")){try{for(var r=u(this.math),a=r.next();!a.done;a=r.next()){var n=a.value;n.lazyTypeset&&this.lazyIsAlways(n)&&(n.lazyCompile=n.lazyTypeset=!1)}}catch(e){t={error:e}}finally{try{a&&!a.done&&(e=r.return)&&e.call(r)}finally{if(t)throw t.error}}this.processed.set("lazyAlways")}},r.prototype.lazyIsAlways=function(t){if(t.state()<c.STATE.LAZYALWAYS){t.state(c.STATE.LAZYALWAYS);var e=t.start.node,r=this.adaptor,a=this.lazyAlwaysIndex,n=this.lazyAlwaysContainers.length;do{var o=this.lazyAlwaysContainers[this.lazyAlwaysIndex];if(r.contains(o,e))return!0;++this.lazyAlwaysIndex>=n&&(this.lazyAlwaysIndex=0)}while(this.lazyAlwaysIndex!==a)}return!1},r.prototype.state=function(e,r){return void 0===r&&(r=!1),t.prototype.state.call(this,e,r),e<c.STATE.LAZYALWAYS&&this.processed.clear("lazyAlways"),this},r.prototype.lazyTypesetAll=function(){return i(this,void 0,void 0,(function(){var t,e,r,a,n,o,i,s,y=this;return l(this,(function(l){t=c.STATE.LAST;try{for(e=u(this.math),r=e.next();!r.done;r=e.next())a=r.value,((n=a).lazyCompile||n.lazyTypeset)&&(n.lazyCompile?(n.state(c.STATE.COMPILED-1),t=c.STATE.COMPILED):(n.state(c.STATE.TYPESET-1),c.STATE.TYPESET<t&&(t=c.STATE.TYPESET)),n.lazyCompile=n.lazyTypeset=!1,n.lazyMarker&&this.lazyObserver.unobserve(n.lazyMarker))}catch(t){i={error:t}}finally{try{r&&!r.done&&(s=e.return)&&s.call(e)}finally{if(i)throw i.error}}return t===c.STATE.LAST?[2,Promise.resolve()]:(this.state(t-1,null),(o=this.outputJax.options.fontCache)&&(this.outputJax.options.fontCache="none"),this.reset(),[2,(0,h.handleRetriesFor)((function(){return y.render()})).then((function(){o&&(y.outputJax.options.fontCache=o)}))])}))}))},r.prototype.lazyObserve=function(t){var r,a;try{for(var n=u(t),o=n.next();!o.done;o=n.next()){var i=o.value,l=this.adaptor.getAttribute(i.target,e.LAZYID);this.lazyList.get(l)&&(i.isIntersecting?(this.lazySet.add(l),this.lazyIdle||(this.lazyIdle=!0,this.lazyProcessSet())):this.lazySet.delete(l))}}catch(t){r={error:t}}finally{try{o&&!o.done&&(a=n.return)&&a.call(n)}finally{if(r)throw r.error}}},r.prototype.lazyHandleSet=function(){var t=this,e=this.lazySet;this.lazySet=new Set,this.lazyPromise=this.lazyPromise.then((function(){var r=t.compileEarlierItems(e)?c.STATE.COMPILED:c.STATE.TYPESET;return r=t.resetStates(e,r),t.state(r-1,null),(0,h.handleRetriesFor)((function(){t.render(),t.lazyIdle=!1}))}))},r.prototype.resetStates=function(t,e){var r,a;try{for(var n=u(t.values()),o=n.next();!o.done;o=n.next()){var i=o.value,l=this.lazyList.get(i);l.lazyCompile?(l.state(c.STATE.COMPILED-1),e=c.STATE.COMPILED):l.state(c.STATE.TYPESET-1),l.lazyCompile=l.lazyTypeset=!1,l.lazyMarker&&this.lazyObserver.unobserve(l.lazyMarker)}}catch(t){r={error:t}}finally{try{o&&!o.done&&(a=n.return)&&a.call(n)}finally{if(r)throw r.error}}return e},r.prototype.compileEarlierItems=function(t){var e,r,a=this.earliestTex(t);if(!a)return!1;var n=!1;try{for(var o=u(this.math),i=o.next();!i.done;i=o.next()){var l=i.value;if(l===a||!(null==l?void 0:l.lazyCompile)||!l.lazyTex)break;l.lazyCompile=!1,l.lazyMarker&&this.lazyObserver.unobserve(l.lazyMarker),l.state(c.STATE.COMPILED-1),n=!0}}catch(t){e={error:t}}finally{try{i&&!i.done&&(r=o.return)&&r.call(o)}finally{if(e)throw e.error}}return n},r.prototype.earliestTex=function(t){var e,r,a=null,n=null;try{for(var o=u(t.values()),i=o.next();!i.done;i=o.next()){var l=i.value,s=this.lazyList.get(l);s.lazyTex&&((null===a||parseInt(l)<a)&&(a=parseInt(l),n=s))}}catch(t){e={error:t}}finally{try{i&&!i.done&&(r=o.return)&&r.call(o)}finally{if(e)throw e.error}}return n},r.prototype.clearMathItemsWithin=function(r){var a,n,o=t.prototype.clearMathItemsWithin.call(this,r);try{for(var i=u(o),l=i.next();!l.done;l=i.next()){var s=l.value.lazyMarker;s&&(this.lazyObserver.unobserve(s),this.lazyList.delete(this.adaptor.getAttribute(s,e.LAZYID)))}}catch(t){a={error:t}}finally{try{l&&!l.done&&(n=i.return)&&n.call(i)}finally{if(a)throw a.error}}return o},r.prototype.render=function(){var e=this.options.lazyAlwaysTypeset;return this.lazyAlwaysContainers=e?this.adaptor.getElements(Array.isArray(e)?e:[e],this.document):null,this.lazyAlwaysIndex=0,t.prototype.render.call(this),this},r}(t),r.OPTIONS=o(o({},t.OPTIONS),{lazyMargin:"200px",lazyAlwaysTypeset:null,renderActions:o(o({},t.OPTIONS.renderActions),{lazyAlways:[c.STATE.LAZYALWAYS,"lazyAlways","",!1]})}),r}e.LazyList=p,(0,c.newState)("LAZYALWAYS",c.STATE.FINDMATH+3),e.LAZYID="data-mjx-lazy",e.LazyMathItemMixin=f,e.LazyMathDocumentMixin=d,e.LazyHandler=function(t){return"undefined"!=typeof IntersectionObserver&&(t.documentClass=d(t.documentClass)),t}},723:function(t,e){MathJax._.components.global.isObject,MathJax._.components.global.combineConfig,MathJax._.components.global.combineDefaults,e.r8=MathJax._.components.global.combineWithMathJax,MathJax._.components.global.MathJax},769:function(t,e){Object.defineProperty(e,"__esModule",{value:!0}),e.protoItem=MathJax._.core.MathItem.protoItem,e.AbstractMathItem=MathJax._.core.MathItem.AbstractMathItem,e.STATE=MathJax._.core.MathItem.STATE,e.newState=MathJax._.core.MathItem.newState},239:function(t,e){Object.defineProperty(e,"__esModule",{value:!0}),e.handleRetriesFor=MathJax._.util.Retries.handleRetriesFor,e.retryAfter=MathJax._.util.Retries.retryAfter}},n={};function o(t){var e=n[t];if(void 0!==e)return e.exports;var r=n[t]={exports:{}};return a[t].call(r.exports,r,r.exports,o),r.exports}t=o(723),e=o(306),r=o(335),MathJax.loader&&MathJax.loader.checkVersion("ui/lazy",e.q,"ui"),(0,t.r8)({_:{ui:{lazy:{LazyHandler:r}}}}),MathJax.startup&&MathJax.startup.extendHandler((function(t){return(0,r.LazyHandler)(t)}))}();