@jupyter-notebook/web-components/dist/toolkit.min.js

A component library for building extensions in Jupyter frontends.

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t=this.type;if(ae.register(this)){const e=this.attributes,i=t.prototype;for(let t=0,o=e.length;t<o;++t)m.defineProperty(i,e[t]);Reflect.defineProperty(t,"observedAttributes",{value:this.observedAttributes,enumerable:!0})}return e.get(this.name)||e.define(this.name,t,this.elementOptions),this}}le.forType=ae.getByType;const ce=new WeakMap,he={bubbles:!0,composed:!0,cancelable:!0};function de(e){return e.shadowRoot||ce.get(e)||null}class ue extends f{constructor(e,t){super(e),this.boundObservables=null,this.behaviors=null,this.needsInitialization=!0,this._template=null,this._styles=null,this._isConnected=!1,this.$fastController=this,this.view=null,this.element=e,this.definition=t;const i=t.shadowOptions;if(void 0!==i){const t=e.attachShadow(i);"closed"===i.mode&&ce.set(e,t)}const o=m.getAccessors(e);if(o.length>0){const t=this.boundObservables=Object.create(null);for(let i=0,s=o.length;i<s;++i){const s=o[i].name,n=e[s];void 0!==n&&(delete e[s],t[s]=n)}}}get isConnected(){return m.track(this,"isConnected"),this._isConnected}setIsConnected(e){this._isConnected=e,m.notify(this,"isConnected")}get template(){return this._template}set template(e){this._template!==e&&(this._template=e,this.needsInitialization||this.renderTemplate(e))}get styles(){return this._styles}set styles(e){this._styles!==e&&(null!==this._styles&&this.removeStyles(this._styles),this._styles=e,this.needsInitialization||null===e||this.addStyles(e))}addStyles(e){const t=de(this.element)||this.element.getRootNode();if(e instanceof HTMLStyleElement)t.append(e);else if(!e.isAttachedTo(t)){const i=e.behaviors;e.addStylesTo(t),null!==i&&this.addBehaviors(i)}}removeStyles(e){const t=de(this.element)||this.element.getRootNode();if(e instanceof HTMLStyleElement)t.removeChild(e);else if(e.isAttachedTo(t)){const i=e.behaviors;e.removeStylesFrom(t),null!==i&&this.removeBehaviors(i)}}addBehaviors(e){const t=this.behaviors||(this.behaviors=new Map),i=e.length,o=[];for(let s=0;s<i;++s){const i=e[s];t.has(i)?t.set(i,t.get(i)+1):(t.set(i,1),o.push(i))}if(this._isConnected){const e=this.element;for(let t=0;t<o.length;++t)o[t].bind(e,$)}}removeBehaviors(e,t=!1){const i=this.behaviors;if(null===i)return;const o=e.length,s=[];for(let n=0;n<o;++n){const o=e[n];if(i.has(o)){const e=i.get(o)-1;0===e||t?i.delete(o)&&s.push(o):i.set(o,e)}}if(this._isConnected){const e=this.element;for(let t=0;t<s.length;++t)s[t].unbind(e)}}onConnectedCallback(){if(this._isConnected)return;const e=this.element;this.needsInitialization?this.finishInitialization():null!==this.view&&this.view.bind(e,$);const t=this.behaviors;if(null!==t)for(const[i]of t)i.bind(e,$);this.setIsConnected(!0)}onDisconnectedCallback(){if(!this._isConnected)return;this.setIsConnected(!1);const e=this.view;null!==e&&e.unbind();const t=this.behaviors;if(null!==t){const e=this.element;for(const[i]of t)i.unbind(e)}}onAttributeChangedCallback(e,t,i){const o=this.definition.attributeLookup[e];void 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forCustomElement(e){const t=e.$fastController;if(void 0!==t)return t;const i=le.forType(e.constructor);if(void 0===i)throw new Error("Missing FASTElement definition.");return e.$fastController=new ue(e,i)}}function pe(e){return class extends e{constructor(){super(),ue.forCustomElement(this)}$emit(e,t,i){return this.$fastController.emit(e,t,i)}connectedCallback(){this.$fastController.onConnectedCallback()}disconnectedCallback(){this.$fastController.onDisconnectedCallback()}attributeChangedCallback(e,t,i){this.$fastController.onAttributeChangedCallback(e,t,i)}}}const ge=Object.assign(pe(HTMLElement),{from:e=>pe(e),define:(e,t)=>new le(e,t).define().type});class be{createCSS(){return""}createBehavior(){}}function fe(e,t){const i=[];let o="";const s=[];for(let n=0,r=e.length-1;n<r;++n){o+=e[n];let r=t[n];if(r instanceof be){const e=r.createBehavior();r=r.createCSS(),e&&s.push(e)}r instanceof X||r instanceof CSSStyleSheet?(""!==o.trim()&&(i.push(o),o=""),i.push(r)):o+=r}return 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Ve{constructor(e,t,i,o,s,n){this.location=e,this.itemsBinding=t,this.templateBinding=o,this.options=n,this.source=null,this.views=[],this.items=null,this.itemsObserver=null,this.originalContext=void 0,this.childContext=void 0,this.bindView=Re,this.itemsBindingObserver=m.binding(t,this,i),this.templateBindingObserver=m.binding(o,this,s),n.positioning&&(this.bindView=Se)}bind(e,t){this.source=e,this.originalContext=t,this.childContext=Object.create(t),this.childContext.parent=e,this.childContext.parentContext=this.originalContext,this.items=this.itemsBindingObserver.observe(e,this.originalContext),this.template=this.templateBindingObserver.observe(e,this.originalContext),this.observeItems(!0),this.refreshAllViews()}unbind(){this.source=null,this.items=null,null!==this.itemsObserver&&this.itemsObserver.unsubscribe(this),this.unbindAllViews(),this.itemsBindingObserver.disconnect(),this.templateBindingObserver.disconnect()}handleChange(e,t){e===this.itemsBinding?(this.items=this.itemsBindingObserver.observe(this.source,this.originalContext),this.observeItems(),this.refreshAllViews()):e===this.templateBinding?(this.template=this.templateBindingObserver.observe(this.source,this.originalContext),this.refreshAllViews(!0)):this.updateViews(t)}observeItems(e=!1){if(!this.items)return void(this.items=o);const t=this.itemsObserver,i=this.itemsObserver=m.getNotifier(this.items),s=t!==i;s&&null!==t&&t.unsubscribe(this),(s||e)&&i.subscribe(this)}updateViews(e){const t=this.childContext,i=this.views,o=[],s=this.bindView;let n=0;for(let t=0,s=e.length;t<s;++t){const s=e[t],r=s.removed;o.push(...i.splice(s.index+n,r.length)),n-=s.addedCount}const r=this.items,a=this.template;for(let n=0,l=e.length;n<l;++n){const l=e[n];let c=l.index;const h=c+l.addedCount;for(;c<h;++c){const e=i[c],n=e?e.firstChild:this.location,l=this.options.recycle&&o.length>0?o.shift():a.create();i.splice(c,0,l),s(l,r,c,t),l.insertBefore(n)}}for(let e=0,t=o.length;e<t;++e)o[e].dispose();if(this.options.positioning)for(let e=0,t=i.length;e<t;++e){const o=i[e].context;o.length=t,o.index=e}}refreshAllViews(e=!1){const t=this.items,i=this.childContext,o=this.template,s=this.location,n=this.bindView;let r=t.length,a=this.views,l=a.length;if((0===r||e)&&(_.disposeContiguousBatch(a),l=0),0===l){this.views=a=new Array(r);for(let e=0;e<r;++e){const r=o.create();n(r,t,e,i),a[e]=r,r.insertBefore(s)}}else{let e=0;for(;e<r;++e)if(e<l){n(a[e],t,e,i)}else{const r=o.create();n(r,t,e,i),a.push(r),r.insertBefore(s)}const c=a.splice(e,l-e);for(e=0,r=c.length;e<r;++e)c[e].dispose()}}unbindAllViews(){const e=this.views;for(let t=0,i=e.length;t<i;++t)e[t].unbind()}}class Ae extends w{constructor(e,t,i){super(),this.itemsBinding=e,this.templateBinding=t,this.options=i,this.createPlaceholder=h.createBlockPlaceholder,function(){if(Ie)return;Ie=!0,m.setArrayObserverFactory((e=>new De(e)));const e=Array.prototype;if(e.$fastPatch)return;Reflect.defineProperty(e,"$fastPatch",{value:1,enumerable:!1});const t=e.pop,i=e.push,o=e.reverse,s=e.shift,n=e.sort,r=e.splice,a=e.unshift;e.pop=function(){const e=this.length>0,i=t.apply(this,arguments),o=this.$fastController;return void 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0!==t&&t.addSplice(Te(xe(0,[],arguments.length),this)),e}}(),this.isItemsBindingVolatile=m.isVolatileBinding(e),this.isTemplateBindingVolatile=m.isVolatileBinding(t)}createBehavior(e){return new Ve(e,this.itemsBinding,this.isItemsBindingVolatile,this.templateBinding,this.isTemplateBindingVolatile,this.options)}}function Le(e){return e?function(t,i,o){return 1===t.nodeType&&t.matches(e)}:function(e,t,i){return 1===e.nodeType}}class ze{constructor(e,t){this.target=e,this.options=t,this.source=null}bind(e){const t=this.options.property;this.shouldUpdate=m.getAccessors(e).some((e=>e.name===t)),this.source=e,this.updateTarget(this.computeNodes()),this.shouldUpdate&&this.observe()}unbind(){this.updateTarget(o),this.source=null,this.shouldUpdate&&this.disconnect()}handleEvent(){this.updateTarget(this.computeNodes())}computeNodes(){let e=this.getNodes();return void 0!==this.options.filter&&(e=e.filter(this.options.filter)),e}updateTarget(e){this.source[this.options.property]=e}}class Pe extends ze{constructor(e,t){super(e,t)}observe(){this.target.addEventListener("slotchange",this)}disconnect(){this.target.removeEventListener("slotchange",this)}getNodes(){return this.target.assignedNodes(this.options)}}function He(e){return"string"==typeof e&&(e={property:e}),new C("fast-slotted",Pe,e)}class Ne extends ze{constructor(e,t){super(e,t),this.observer=null,t.childList=!0}observe(){null===this.observer&&(this.observer=new MutationObserver(this.handleEvent.bind(this))),this.observer.observe(this.target,this.options)}disconnect(){this.observer.disconnect()}getNodes(){return"subtree"in this.options?Array.from(this.target.querySelectorAll(this.options.selector)):Array.from(this.target.childNodes)}}function Me(e){return"string"==typeof e&&(e={property:e}),new C("fast-children",Ne,e)}class Be{handleStartContentChange(){this.startContainer.classList.toggle("start",this.start.assignedNodes().length>0)}handleEndContentChange(){this.endContainer.classList.toggle("end",this.end.assignedNodes().length>0)}}const je=(e,t)=>K`<span part="end" ${Fe("endContainer")} class=${e=>t.end?"end":void 0}><slot name="end" ${Fe("end")} @slotchange="${e=>e.handleEndContentChange()}">${t.end||""}</slot></span>`,Ue=(e,t)=>K`<span part="start" ${Fe("startContainer")} class="${e=>t.start?"start":void 0}"><slot name="start" ${Fe("start")} @slotchange="${e=>e.handleStartContentChange()}">${t.start||""}</slot></span>`;K`<span part="end" ${Fe("endContainer")}><slot name="end" ${Fe("end")} @slotchange="${e=>e.handleEndContentChange()}"></slot></span>`,K`<span part="start" ${Fe("startContainer")}><slot name="start" ${Fe("start")} @slotchange="${e=>e.handleStartContentChange()}"></slot></span>`;
/*! *****************************************************************************
Copyright (c) Microsoft Corporation.

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
***************************************************************************** */
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e.dispatchEvent(t),t.detail.container||Je.getOrCreateDOMContainer()},getOrCreateDOMContainer:(e,t)=>e?e.$$container$$||new ut(e,Object.assign({},Xe.default,t,{parentLocator:Je.findParentContainer})):Ze||(Ze=new ut(null,Object.assign({},Xe.default,t,{parentLocator:()=>null}))),getDesignParamtypes:Qe("design:paramtypes"),getAnnotationParamtypes:Qe("di:paramtypes"),getOrCreateAnnotationParamTypes(e){let t=this.getAnnotationParamtypes(e);return void 0===t&&Reflect.defineMetadata("di:paramtypes",t=[],e),t},getDependencies(e){let t=Ye.get(e);if(void 0===t){const i=e.inject;if(void 0===i){const i=Je.getDesignParamtypes(e),o=Je.getAnnotationParamtypes(e);if(void 0===i)if(void 0===o){const i=Object.getPrototypeOf(e);t="function"==typeof i&&i!==Function.prototype?We(Je.getDependencies(i)):[]}else t=We(o);else if(void 0===o)t=We(i);else{t=We(i);let e,s=o.length;for(let i=0;i<s;++i)e=o[i],void 0!==e&&(t[i]=e);const n=Object.keys(o);let r;s=n.length;for(let 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