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slide-31.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width,initial-scale=1"/>
<meta name="description" content="Houdini talk about the power of web components for Enterprise frontend"/>
<meta name="theme-color" content="#ffffff">
<title>Houdini talk</title>
<script type="module" src="./src/scri-pt.js"></script>
<script type="module">let e={},t=[(e,t)=>e[t],(e,t)=>e.hasAttribute(t),(e,t)=>e.getAttribute(t),e=>1];class s extends WeakMap{use=(e,t={})=>this.get(e)||this.set(e,t).get(e)}let i={},n=new s,a=new s,l=new s,r=(e,t)=>"number"===t?0|e:e;class h{#e;#t=[];#s=0;constructor(e){this.#e=e}#i=()=>1==++this.#s&&queueMicrotask((()=>{this.#t.map((e=>e())),this.#s=0}));get value(){return this.#e}set value(e){this.#e=e,this.#i()}onChange(e,t){t&&e(this.#e),this.#t.push((()=>e(this.#e)))}when(e,t=[]){let s=new h(e(this.#e));return this.onChange((t=>s.value=e(t))),t.map((e=>e.onChange(this.#i))),s}}let o={},u={};class c extends HTMLElement{#n=(e,t=this)=>t.getAttribute(e);#a=(e,s)=>{let i=e[0],n=e.slice(1),l=this.#n(e,s),r=".?!@".indexOf(i);if(r>=0){let i=t[r](s,n);a.use(s)[e]={init:i,name:l},queueMicrotask((()=>s.removeAttribute(e)))}};static Signal=h;static hydrate=(t,s,r)=>{let h="string"==typeof t?i[t]:t.map((e=>document.querySelector(e).shadowRoot));for(let t of h)if(!t.h){t.h=1;let i=l.get(t)||e;for(let l in s){let h=n.get(t)[l],u=a.get(h);if(u){let t=s[l];for(let s in t){let n=t[s];s in o&&(n=o[s](n));let{name:a,init:l}=u[s.toLowerCase()]||e,{signal:c,type:d,id:g}=a&&i[a]||e;r instanceof Object&&g&&c&&(r[g]=c);let m=s.slice(1),f=e=>n({type:d,name:m,signal:c,signals:i,init:l,domNode:h,e:e});a&&(s.startsWith("@")?h.addEventListener(m,f):queueMicrotask(f))}}}}};static plugin=(e,t)=>(o[e]=t)&&u[e]&&u[e]();static usable=(e,t=[])=>{for(let s of e)o[s]||t.push(new Promise((e=>u[s]=e)));return Promise.all(t)};static render=e=>({domNode:t,name:s})=>t[s]="function"==typeof e?e():e;static rerender=(e,t=!0)=>e.signal.onChange((t=>c.render(t)(e)),t);connectedCallback(){let e=this[this.#n("for")||"parentNode"],t=this.getRootNode(),s=this.#n("new"),a=s||this.#n("ref")||crypto.randomUUID(),o=this.#n("type"),{id:u,textContent:c}=this;(i[a]=i[a]||[]).push(t),n.use(t)[a]=e,s&&(l.use(t)[a]={signal:new h(r(c,o)),type:o,id:u});for(let t of e.getAttributeNames())this.#a(t,e);null!==this.#n("hydrate")&&(new Function(`let{hydrate,render,rerender}=customElements.get('sig-nal');hydrate('${a}',${c})`)(),c=""),this.className||this.replaceWith(c)}}customElements.define("sig-nal",c);
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</head>
<body onkeydown="let offset=(event.keyCode===32||event.keyCode===39)?1:event.keyCode===37?-1:0;if(!offset)return;let p=location.pathname;let prefix=p.slice(0,p.lastIndexOf('/')+1);let nr=(p.replace(/\D/g,'')|0)+offset;if(nr<0||nr>35)return;location.pathname=`${prefix}slide-${nr}.html`">
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<select aria-label="select language" id="language" onchange="document.documentElement.setAttribute('lang', this.value)">
<option selected value="en">EN</option>
<option value="de">DE</option>
</select>
<scri-pt when="idle">
<template>
<script type="module" src="./src/trans-late.js"></script>
<link rel="stylesheet" href="./styles.css"/>
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</scri-pt>
<h1>5. Server-Side Rendering</h1>
<ul>
<li><b>step 3: compose</b></li>
<li style="margin-bottom:0"><pre>
<code id="htmlViewer" style="color:rgb(255, 255, 255); font-weight:400;background-color:rgb(28, 27, 27);background:rgb(28, 27, 27);display:block;padding: .5em;"><span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">template</span> <span style="color:rgb(136, 174, 206); font-weight:400;">shadowrootmode</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"open"</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">link</span> <span style="color:rgb(136, 174, 206); font-weight:400;">rel</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"stylesheet"</span> <span style="color:rgb(136, 174, 206); font-weight:400;">href</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"./counterdemo.css"</span>/></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">h1</span>></span>Interactive island<span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">h1</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">p</span>></span>The server supplied the initial value <span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">b</span>></span>3.<span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">b</span>></span><span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">p</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">div</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">button</span> @<span style="color:rgb(136, 174, 206); font-weight:400;">click</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"counter"</span>></span><span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">sig-nal</span> <span style="color:rgb(136, 174, 206); font-weight:400;">ref</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"dec"</span>></span>-<span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">sig-nal</span>></span><span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">button</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">div</span> <span style="color:rgb(136, 174, 206); font-weight:400;">.textContent</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"counter"</span>></span><span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">sig-nal</span> <span style="color:rgb(136, 174, 206); font-weight:400;">new</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"counter"</span> <span style="color:rgb(136, 174, 206); font-weight:400;">type</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"number"</span>></span>3<span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">sig-nal</span>></span><span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">div</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">button</span> @<span style="color:rgb(136, 174, 206); font-weight:400;">click</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"counter"</span>></span><span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">sig-nal</span> <span style="color:rgb(136, 174, 206); font-weight:400;">ref</span>=<span style="color:rgb(181, 189, 104); font-weight:400;">"inc"</span>></span>+<span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">sig-nal</span>></span><span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">button</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"><<span style="color:rgb(240, 141, 73); font-weight:400;">sig-nal</span> <span style="color:rgb(136, 174, 206); font-weight:400;">hydrate</span>></span>
{
counter: { ".textContent": rerender },
inc: { "@click": ({ signal }) => signal.value++ },
dec: { "@click": ({ signal }) => signal.value-- }
}
<span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">sig-nal</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">div</span>></span>
<span style="color:rgb(255, 255, 255); font-weight:400;"></<span style="color:rgb(240, 141, 73); font-weight:400;">template</span>></span>
</code></pre></li>
<li><span class="attr">hydrate:</span> names of DOM nodes ↔ reactions</li>
</ul>
</body>
</html>