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21 lines
28 KiB
HTML
<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><meta name="description" content="Introducing a library."><title>`deka-dom-el` — Introduction</title><!--<dde:mark type="component" name="metaAuthor" host="this" ssr/>--><meta name="author" content="Jan Andrle"><link type="text/plain" rel="author" href="https://jaandrle.github.io/humans.txt"><meta name="generator" content="deka-dom-el"><!--<dde:mark type="component" name="metaTwitter" host="this" ssr/>--><meta name="twitter:card" content="summary_large_image"><meta name="twitter:url" content="https://github.com/jaandrle/deka-dom-el"><meta name="twitter:title" content="deka-dom-el"><meta name="twitter:description" content="A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks."><meta name="twitter:creator" content="@jaandrle"><!--<dde:mark type="component" name="metaFacebook" host="this" ssr/>--><meta name="og:url" content="https://github.com/jaandrle/deka-dom-el"><meta name="og:title" content="deka-dom-el"><meta name="og:description" content="A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks."><meta name="og:creator" content="@jaandrle"><script src="https://cdn.jsdelivr.net/npm/shiki@0.9" defer=""></script><script type="module" src="code.js.js"></script><script src="https://flems.io/flems.html" type="text/javascript" charset="utf-8"></script><link rel="stylesheet" href="global.css"></head><body><!--<dde:mark type="component" name="page" host="this" ssr/>--><!--<dde:mark type="component" name="simplePage" host="this" ssr/>--><!--<dde:mark type="component" name="header" host="this" ssr/>--><header><h1>`deka-dom-el` — Introduction</h1><p>Introducing a library.</p></header><nav><a href="https://github.com/jaandrle/deka-dom-el"><svg class="icon" viewBox="0 0 32 32"><!--<dde:mark type="component" name="iconGitHub" host="parentElement" ssr/>--><path d="M 16,0.395c -8.836,0 -16,7.163 -16,16c 0,7.069 4.585,13.067 10.942,15.182c 0.8,0.148 1.094,-0.347 1.094,-0.77c 0,-0.381 -0.015,-1.642 -0.022,-2.979c -4.452,0.968 -5.391,-1.888 -5.391,-1.888c -0.728,-1.849 -1.776,-2.341 -1.776,-2.341c -1.452,-0.993 0.11,-0.973 0.11,-0.973c 1.606,0.113 2.452,1.649 2.452,1.649c 1.427,2.446 3.743,1.739 4.656,1.33c 0.143,-1.034 0.558,-1.74 1.016,-2.14c -3.554,-0.404 -7.29,-1.777 -7.29,-7.907c 0,-1.747 0.625,-3.174 1.649,-4.295c -0.166,-0.403 -0.714,-2.03 0.155,-4.234c 0,0 1.344,-0.43 4.401,1.64c 1.276,-0.355 2.645,-0.532 4.005,-0.539c 1.359,0.006 2.729,0.184 4.008,0.539c 3.054,-2.07 4.395,-1.64 4.395,-1.64c 0.871,2.204 0.323,3.831 0.157,4.234c 1.026,1.12 1.647,2.548 1.647,4.295c 0,6.145 -3.743,7.498 -7.306,7.895c 0.574,0.497 1.085,1.47 1.085,2.963c 0,2.141 -0.019,3.864 -0.019,4.391c 0,0.426 0.288,0.925 1.099,0.768c 6.354,-2.118 10.933,-8.113 10.933,-15.18c 0,-8.837 -7.164,-16 -16,-16Z"></path></svg>GitHub</a><a href="./" title="Introducing a library." class="current">1. Introduction</a><a href="p02-elements" title="Basic concepts of elements modifications and creations.">2. Elements</a><a href="p03-events" title="Using not only events in UI declaratively.">3. Events and Addons</a><a href="p04-signals" title="Handling reactivity in UI via signals.">4. Signals and reactivity</a><a href="p05-scopes" title="Organizing UI into components">5. Scopes and components</a><a href="p06-customElement" title="Using custom elements in combinantion with DDE">6. Custom elements</a></nav><main><p>The library tries to provide pure JavaScript tool(s) to create reactive interfaces using …</p><h3 id="h-event-driven-programming--parts-separation--ps"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-event-driven-programming--parts-separation--ps" tabindex="-1">#</a> Event-driven programming (3 parts separation ≡ 3PS)</h3><p>Let's introduce the basic principle on which the library is built. We'll use the JavaScript listener as a starting point. </p><div class="code" data-js="todo"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">const onchage=
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event=>
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console.log("Reacting to the:", event); // A
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input.addEventListener("change", onchange); // B
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input.dispatchEvent(new Event("change")); // C
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</code></div><p>As we can see, in the code at location “A” we define how to react when the function is called with any event as an argument. At that moment, we don't care who/why/how the function was called. Similarly, at point “B”, we reference to a function to be called on the event without caring what the function will do at that time. Finally, at point “C”, we tell the application that a change has occurred, in the input, and we don't care if/how someone is listening for the event. </p><p>We start with creating and modifying a static elements and end up with UI templates. <em>From <code>document.createElement</code> to <code>el</code>.</em>. Then we go through the native events system and the way to include it declaratively in UI templates. <em>From <code>element.addEventListener</code> to <code>on</code>.</em></p><p>Next step is providing interactivity not only for our UI templates. We introduce signals (<code>S</code>) and how them incorporate to UI templates.</p><p>Now we will clarify how the signals are incorporated into our templates with regard to application performance. This is not the only reason the library uses <code>scope</code>s. We will look at how they work in components represented in JavaScript by functions.</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-1-8meex5b3tyo" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { el } from "./esm-with-signals.js";
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import { S } from "./esm-with-signals.js";
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const clicks= S(0);
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document.body.append(
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el().append(
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el("p", S(()=>
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"Hello World "+"🎉".repeat(clicks())
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)),
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el("button", {
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type: "button",
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onclick: ()=> clicks(clicks()+1),
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textContent: "Fire"
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})
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)
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);
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</code></div><script>Flems(document.getElementById("code-example-1-8meex5b3tyo"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el } from \\\"./esm-with-signals.js\\\";\\nimport { S } from \\\"./esm-with-signals.js\\\";\\nconst clicks= S(0);\\ndocument.body.append(\\n\\tel().append(\\n\\t\\tel(\\\"p\\\", S(()=>\\n\\t\\t\\t\\\"Hello World \\\"+\\\"🎉\\\".repeat(clicks())\\n\\t\\t)),\\n\\t\\tel(\\\"button\\\", {\\n\\t\\t\\ttype: \\\"button\\\",\\n\\t\\t\\tonclick: ()=> clicks(clicks()+1),\\n\\t\\t\\ttextContent: \\\"Fire\\\"\\n\\t\\t})\\n\\t)\\n);\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar k = {\\n\\tisSignal(t) {\\n\\t\\treturn !1;\\n\\t},\\n\\tprocessReactiveAttribute(t, e, n, r) {\\n\\t\\treturn n;\\n\\t}\\n};\\nfunction B(t, e = !0) {\\n\\treturn e ? 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tt(t, e, n) : r(e, n);\\n}\\nfunction rt(t, e) {\\n\\tif (U.has(t))\\n\\t\\treturn U.get(t);\\n\\tlet r = (t instanceof d.S ? xt : mt).bind(null, t, \\\"Attribute\\\"), o = W(e);\\n\\treturn { setRemoveAttr: r, s: o };\\n}\\nfunction gt(t, e) {\\n\\tlet n = W(this);\\n\\treturn I(\\n\\t\\tn,\\n\\t\\te,\\n\\t\\t(r, o) => t.classList.toggle(r, o === -1 ? void 0 : !!o)\\n\\t), t;\\n}\\nfunction Ft(t) {\\n\\treturn Array.from(t.children).forEach((e) => e.remove()), t;\\n}\\nfunction vt(t, e, n, r) {\\n\\treturn t instanceof d.H ? t[e + \\\"Attribute\\\"](n, r) : t[e + \\\"AttributeNS\\\"](null, n, r);\\n}\\nfunction Et(t, e) {\\n\\tif (!(e in t))\\n\\t\\treturn !1;\\n\\tlet n = ot(t, e);\\n\\treturn !S(n.set);\\n}\\nfunction ot(t, e) {\\n\\tif (t = Object.getPrototypeOf(t), !t)\\n\\t\\treturn {};\\n\\tlet n = Object.getOwnPropertyDescriptor(t, e);\\n\\treturn n || ot(t, e);\\n}\\nfunction I(t, e, n) {\\n\\tif (!(typeof e != \\\"object\\\" || e === null))\\n\\t\\treturn Object.entries(e).forEach(function([o, c]) {\\n\\t\\t\\to && (c = t.processReactiveAttribute(e, o, c, n), n(o, c));\\n\\t\\t});\\n}\\nfunction ct(t) {\\n\\treturn Array.isArray(t) ? t.filter(Boolean).join(\\\" \\\") : t;\\n}\\nfunction mt(t, e, n, r) {\\n\\treturn t[(S(r) ? \\\"remove\\\" : \\\"set\\\") + e](n, ct(r));\\n}\\nfunction xt(t, e, n, r, o = null) {\\n\\treturn t[(S(r) ? \\\"remove\\\" : \\\"set\\\") + e + \\\"NS\\\"](o, n, ct(r));\\n}\\nfunction et(t, e, n) {\\n\\tif (Reflect.set(t, e, n), !!S(n))\\n\\t\\treturn Reflect.deleteProperty(t, e);\\n}\\n\\n// src/events-observer.js\\nvar D = d.M ? wt() : new Proxy({}, {\\n\\tget() {\\n\\t\\treturn () => {\\n\\t\\t};\\n\\t}\\n});\\nfunction wt() {\\n\\tlet t = /* @__PURE__ */ new Map(), e = !1, n = (s) => function(u) {\\n\\t\\tfor (let f of u)\\n\\t\\t\\tif (f.type === \\\"childList\\\") {\\n\\t\\t\\t\\tif (l(f.addedNodes, !0)) {\\n\\t\\t\\t\\t\\ts();\\n\\t\\t\\t\\t\\tcontinue;\\n\\t\\t\\t\\t}\\n\\t\\t\\t\\tx(f.removedNodes, !0) && s();\\n\\t\\t\\t}\\n\\t}, r = new d.M(n(a));\\n\\treturn {\\n\\t\\tobserve(s) {\\n\\t\\t\\tlet u = new d.M(n(() => {\\n\\t\\t\\t}));\\n\\t\\t\\treturn u.observe(s, { childList: !0, subtree: !0 }), () => u.disconnect();\\n\\t\\t},\\n\\t\\tonConnected(s, u) {\\n\\t\\t\\ti();\\n\\t\\t\\tlet f = c(s);\\n\\t\\t\\tf.connected.has(u) || (f.connected.add(u), f.length_c += 1);\\n\\t\\t},\\n\\t\\toffConnected(s, u) {\\n\\t\\t\\tif (!t.has(s))\\n\\t\\t\\t\\treturn;\\n\\t\\t\\tlet f = t.get(s);\\n\\t\\t\\tf.connected.has(u) && (f.connected.delete(u), f.length_c -= 1, o(s, f));\\n\\t\\t},\\n\\t\\tonDisconnected(s, u) {\\n\\t\\t\\ti();\\n\\t\\t\\tlet f = c(s);\\n\\t\\t\\tf.disconnected.has(u) || (f.disconnected.add(u), f.length_d += 1);\\n\\t\\t},\\n\\t\\toffDisconnected(s, u) {\\n\\t\\t\\tif (!t.has(s))\\n\\t\\t\\t\\treturn;\\n\\t\\t\\tlet f = t.get(s);\\n\\t\\t\\tf.disconnected.has(u) && (f.disconnected.delete(u), f.length_d -= 1, o(s, f));\\n\\t\\t}\\n\\t};\\n\\tfunction o(s, u) {\\n\\t\\tu.length_c || u.length_d || (t.delete(s), a());\\n\\t}\\n\\tfunction c(s) {\\n\\t\\tif (t.has(s))\\n\\t\\t\\treturn t.get(s);\\n\\t\\tlet u = {\\n\\t\\t\\tconnected: /* @__PURE__ */ new WeakSet(),\\n\\t\\t\\tlength_c: 0,\\n\\t\\t\\tdisconnected: /* @__PURE__ */ new WeakSet(),\\n\\t\\t\\tlength_d: 0\\n\\t\\t};\\n\\t\\treturn t.set(s, u), u;\\n\\t}\\n\\tfunction i() {\\n\\t\\te || (e = !0, r.observe(d.D.body, { childList: !0, subtree: !0 }));\\n\\t}\\n\\tfunction a() {\\n\\t\\t!e || t.size || (e = !1, r.disconnect());\\n\\t}\\n\\tfunction h() {\\n\\t\\treturn new Promise(function(s) {\\n\\t\\t\\t(requestIdleCallback || requestAnimationFrame)(s);\\n\\t\\t});\\n\\t}\\n\\tasync function v(s) {\\n\\t\\tt.size > 30 && await h();\\n\\t\\tlet u = [];\\n\\t\\tif (!(s instanceof Node))\\n\\t\\t\\treturn u;\\n\\t\\tfor (let f of t.keys())\\n\\t\\t\\tf === s || !(f instanceof Node) || s.contains(f) && u.push(f);\\n\\t\\treturn u;\\n\\t}\\n\\tfunction l(s, u) {\\n\\t\\tlet f = !1;\\n\\t\\tfor (let b of s) {\\n\\t\\t\\tif (u && v(b).then(l), !t.has(b))\\n\\t\\t\\t\\tcontinue;\\n\\t\\t\\tlet N = t.get(b);\\n\\t\\t\\tN.length_c && (b.dispatchEvent(new Event(_)), N.connected = /* @__PURE__ */ new WeakSet(), N.length_c = 0, N.length_d || t.delete(b), f = !0);\\n\\t\\t}\\n\\t\\treturn f;\\n\\t}\\n\\tfunction x(s, u) {\\n\\t\\tlet f = !1;\\n\\t\\tfor (let b of s)\\n\\t\\t\\tu && v(b).then(x), !(!t.has(b) || !t.get(b).length_d) && ((globalThis.queueMicrotask || setTimeout)(y(b)), f = !0);\\n\\t\\treturn f;\\n\\t}\\n\\tfunction y(s) {\\n\\t\\treturn () => {\\n\\t\\t\\ts.isConnected || (s.dispatchEvent(new Event(O)), t.delete(s));\\n\\t\\t};\\n\\t}\\n}\\n\\n// src/customElement.js\\nfunction Zt(t, e, n, r = _t) {\\n\\tm.push({\\n\\t\\tscope: t,\\n\\t\\thost: (...i) => i.length ? i.forEach((a) => a(t)) : t\\n\\t}), typeof r == \\\"function\\\" && (r = r.call(t, t));\\n\\tlet o = t[C];\\n\\to || yt(t);\\n\\tlet c = n.call(t, r);\\n\\treturn o || t.dispatchEvent(new Event(_)), e.nodeType === 11 && typeof e.mode == \\\"string\\\" && t.addEventListener(O, D.observe(e), { once: !0 }), m.pop(), e.append(c);\\n}\\nfunction yt(t) {\\n\\treturn J(t.prototype, \\\"connectedCallback\\\", function(e, n, r) {\\n\\t\\te.apply(n, r), n.dispatchEvent(new Event(_));\\n\\t}), J(t.prototype, \\\"disconnectedCallback\\\", function(e, n, r) {\\n\\t\\te.apply(n, r), (globalThis.queueMicrotask || setTimeout)(\\n\\t\\t\\t() => !n.isConnected && n.dispatchEvent(new Event(O))\\n\\t\\t);\\n\\t}), J(t.prototype, \\\"attributeChangedCallback\\\", function(e, n, r) {\\n\\t\\tlet [o, , c] = r;\\n\\t\\tn.dispatchEvent(new CustomEvent(M, {\\n\\t\\t\\tdetail: [o, c]\\n\\t\\t})), e.apply(n, r);\\n\\t}), t.prototype[C] = !0, t;\\n}\\nfunction J(t, e, n) {\\n\\tt[e] = new Proxy(t[e] || (() => {\\n\\t}), { apply: n });\\n}\\nfunction _t(t) {\\n\\treturn F(t, (e, n) => e.getAttribute(n));\\n}\\n\\n// src/events.js\\nfunction Qt(t, e, n) {\\n\\treturn e || (e = {}), function(o, ...c) {\\n\\t\\tn && (c.unshift(o), o = typeof n == \\\"function\\\" ? n() : n);\\n\\t\\tlet i = c.length ? new CustomEvent(t, Object.assign({ detail: c[0] }, e)) : new Event(t, e);\\n\\t\\treturn o.dispatchEvent(i);\\n\\t};\\n}\\nfunction w(t, e, n) {\\n\\treturn function(o) {\\n\\t\\treturn o.addEventListener(t, e, n), o;\\n\\t};\\n}\\nvar it = (t) => Object.assign({}, typeof t == \\\"object\\\" ? t : null, { once: !0 });\\nw.connected = function(t, e) {\\n\\treturn e = it(e), function(r) {\\n\\t\\treturn r.addEventListener(_, t, e), r[C] ? r : r.isConnected ? (r.dispatchEvent(new Event(_)), r) : (q(e.signal, () => D.offConnected(r, t)) && D.onConnected(r, t), r);\\n\\t};\\n};\\nw.disconnected = function(t, e) {\\n\\treturn e = it(e), function(r) {\\n\\t\\treturn r.addEventListener(O, t, e), r[C] || q(e.signal, () => D.offDisconnected(r, t)) && D.onDisconnected(r, t), r;\\n\\t};\\n};\\nvar Z = /* @__PURE__ */ new WeakMap();\\nw.disconnectedAsAbort = function(t) {\\n\\tif (Z.has(t))\\n\\t\\treturn Z.get(t);\\n\\tlet e = new AbortController();\\n\\treturn Z.set(t, e), t(w.disconnected(() => e.abort())), e;\\n};\\nvar At = /* @__PURE__ */ new WeakSet();\\nw.attributeChanged = function(t, e) {\\n\\treturn typeof e != \\\"object\\\" && (e = {}), function(r) {\\n\\t\\tif (r.addEventListener(M, t, e), r[C] || At.has(r) || !d.M)\\n\\t\\t\\treturn r;\\n\\t\\tlet o = new d.M(function(i) {\\n\\t\\t\\tfor (let { attributeName: a, target: h } of i)\\n\\t\\t\\t\\th.dispatchEvent(\\n\\t\\t\\t\\t\\tnew CustomEvent(M, { detail: [a, h.getAttribute(a)] })\\n\\t\\t\\t\\t);\\n\\t\\t});\\n\\t\\treturn q(e.signal, () => o.disconnect()) && o.observe(r, { attributes: !0 }), r;\\n\\t};\\n};\\n\\n// src/signals-lib.js\\nvar p = \\\"__dde_signal\\\";\\nfunction z(t) {\\n\\ttry {\\n\\t\\treturn T(t, p);\\n\\t} catch {\\n\\t\\treturn !1;\\n\\t}\\n}\\nvar H = [], g = /* @__PURE__ */ new WeakMap();\\nfunction E(t, e) {\\n\\tif (typeof t != \\\"function\\\")\\n\\t\\treturn st(!1, t, e);\\n\\tif (z(t))\\n\\t\\treturn t;\\n\\tlet n = st(!0), r = function() {\\n\\t\\tlet [o, ...c] = g.get(r);\\n\\t\\tif (g.set(r, /* @__PURE__ */ new Set([o])), H.push(r), dt(n, t()), H.pop(), !c.length)\\n\\t\\t\\treturn;\\n\\t\\tlet i = g.get(r);\\n\\t\\tfor (let a of c)\\n\\t\\t\\ti.has(a) || L(a, r);\\n\\t};\\n\\treturn g.set(n[p], r), g.set(r, /* @__PURE__ */ new Set([n])), r(), n;\\n}\\nE.action = function(t, e, ...n) {\\n\\tlet r = t[p], { actions: o } = r;\\n\\tif (!o || !(e in o))\\n\\t\\tthrow new Error(`'${t}' has no action with name '${e}'!`);\\n\\tif (o[e].apply(r, n), r.skip)\\n\\t\\treturn delete r.skip;\\n\\tr.listeners.forEach((c) => c(r.value));\\n};\\nE.on = function t(e, n, r = {}) {\\n\\tlet { signal: o } = r;\\n\\tif (!(o && o.aborted)) {\\n\\t\\tif (Array.isArray(e))\\n\\t\\t\\treturn e.forEach((c) => t(c, n, r));\\n\\t\\tQ(e, n), o && o.addEventListener(\\\"abort\\\", () => L(e, n));\\n\\t}\\n};\\nE.symbols = {\\n\\t//signal: mark,\\n\\tonclear: Symbol.for(\\\"Signal.onclear\\\")\\n};\\nE.clear = function(...t) {\\n\\tfor (let n of t) {\\n\\t\\tlet r = n[p];\\n\\t\\tr && (delete n.toJSON, r.onclear.forEach((o) => o.call(r)), e(n, r), delete n[p]);\\n\\t}\\n\\tfunction e(n, r) {\\n\\t\\tr.listeners.forEach((o) => {\\n\\t\\t\\tif (r.listeners.delete(o), !g.has(o))\\n\\t\\t\\t\\treturn;\\n\\t\\t\\tlet c = g.get(o);\\n\\t\\t\\tc.delete(n), !(c.size > 1) && (n.clear(...c), g.delete(o));\\n\\t\\t});\\n\\t}\\n};\\nvar R = \\\"__dde_reactive\\\";\\nE.el = function(t, e) {\\n\\tlet n = j.mark({ type: \\\"reactive\\\" }, !0), r = n.end, o = d.D.createDocumentFragment();\\n\\to.append(n, r);\\n\\tlet { current: c } = m, i = {}, a = (h) => {\\n\\t\\tif (!n.parentNode || !r.parentNode)\\n\\t\\t\\treturn L(t, a);\\n\\t\\tlet v = i;\\n\\t\\ti = {}, m.push(c);\\n\\t\\tlet l = e(h, function(u, f) {\\n\\t\\t\\tlet b;\\n\\t\\t\\treturn T(v, u) ? (b = v[u], delete v[u]) : b = f(), i[u] = b, b;\\n\\t\\t});\\n\\t\\tm.pop(), Array.isArray(l) || (l = [l]);\\n\\t\\tlet x = document.createComment(\\\"\\\");\\n\\t\\tl.push(x), n.after(...l);\\n\\t\\tlet y;\\n\\t\\tfor (; (y = x.nextSibling) && y !== r; )\\n\\t\\t\\ty.remove();\\n\\t\\tx.remove(), n.isConnected && St(c.host());\\n\\t};\\n\\treturn Q(t, a), ft(t, a, n, e), a(t()), o;\\n};\\nfunction St(t) {\\n\\t!t || !t[R] || (requestIdleCallback || setTimeout)(function() {\\n\\t\\tt[R] = t[R].filter(([e, n]) => n.isConnected ? !0 : (L(...e), !1));\\n\\t});\\n}\\nvar Ct = {\\n\\t_set(t) {\\n\\t\\tthis.value = t;\\n\\t}\\n};\\nfunction Ot(t) {\\n\\treturn function(e, n) {\\n\\t\\tlet r = (...c) => c.length ? e.setAttribute(n, ...c) : K(r), o = at(r, e.getAttribute(n), Ct);\\n\\t\\treturn t[n] = o, o;\\n\\t};\\n}\\nvar G = \\\"__dde_attributes\\\";\\nE.observedAttributes = function(t) {\\n\\tlet e = t[G] = {}, n = F(t, Ot(e));\\n\\treturn w.attributeChanged(function({ detail: o }) {\\n\\t\\t/*! This maps attributes to signals (`S.observedAttributes`).\\n\\t\\t\\t* Investigate `__dde_attributes` key of the element.*/\\n\\t\\tlet [c, i] = o, a = this[G][c];\\n\\t\\tif (a)\\n\\t\\t\\treturn E.action(a, \\\"_set\\\", i);\\n\\t})(t), w.disconnected(function() {\\n\\t\\t/*! This removes all signals mapped to attributes (`S.observedAttributes`).\\n\\t\\t\\t* Investigate `__dde_attributes` key of the element.*/\\n\\t\\tE.clear(...Object.values(this[G]));\\n\\t})(t), n;\\n};\\nvar ut = {\\n\\tisSignal: z,\\n\\tprocessReactiveAttribute(t, e, n, r) {\\n\\t\\tif (!z(n))\\n\\t\\t\\treturn n;\\n\\t\\tlet o = (c) => {\\n\\t\\t\\tif (!t.isConnected)\\n\\t\\t\\t\\treturn L(n, o);\\n\\t\\t\\tr(e, c);\\n\\t\\t};\\n\\t\\treturn Q(n, o), ft(n, o, t, e), n();\\n\\t}\\n};\\nfunction ft(t, e, ...n) {\\n\\tlet { current: r } = m;\\n\\tr.prevent || r.host(function(o) {\\n\\t\\to[R] || (o[R] = [], w.disconnected(\\n\\t\\t\\t() => (\\n\\t\\t\\t\\t/*!\\n\\t\\t\\t\\t* Clears all Signals listeners added in the current scope/host (`S.el`, `assign`, …?).\\n\\t\\t\\t\\t* You can investigate the `__dde_reactive` key of the element.\\n\\t\\t\\t\\t* */\\n\\t\\t\\t\\to[R].forEach(([[c, i]]) => L(c, i, c[p] && c[p].host && c[p].host() === o))\\n\\t\\t\\t)\\n\\t\\t)(o)), o[R].push([[t, e], ...n]);\\n\\t});\\n}\\nfunction st(t, e, n) {\\n\\tlet r = t ? () => K(r) : (...o) => o.length ? dt(r, ...o) : K(r);\\n\\treturn at(r, e, n, t);\\n}\\nvar Dt = Object.assign(/* @__PURE__ */ Object.create(null), {\\n\\tstopPropagation() {\\n\\t\\tthis.skip = !0;\\n\\t}\\n}), V = class extends Error {\\n\\tconstructor() {\\n\\t\\tsuper();\\n\\t\\tlet [e, ...n] = this.stack.split(`\\n`), r = e.slice(e.indexOf(\\\"@\\\"), e.indexOf(\\\".js:\\\") + 4);\\n\\t\\tthis.stack = n.find((o) => !o.includes(r));\\n\\t}\\n};\\nfunction at(t, e, n, r = !1) {\\n\\tlet o = [];\\n\\tX(n) !== \\\"[object Object]\\\" && (n = {});\\n\\tlet { onclear: c } = E.symbols;\\n\\tn[c] && (o.push(n[c]), delete n[c]);\\n\\tlet { host: i } = m;\\n\\treturn Reflect.defineProperty(t, p, {\\n\\t\\tvalue: {\\n\\t\\t\\tvalue: e,\\n\\t\\t\\tactions: n,\\n\\t\\t\\tonclear: o,\\n\\t\\t\\thost: i,\\n\\t\\t\\tlisteners: /* @__PURE__ */ new Set(),\\n\\t\\t\\tdefined: new V().stack,\\n\\t\\t\\treadonly: r\\n\\t\\t},\\n\\t\\tenumerable: !1,\\n\\t\\twritable: !1,\\n\\t\\tconfigurable: !0\\n\\t}), t.toJSON = () => t(), t.valueOf = () => t[p] && t[p].value, Object.setPrototypeOf(t[p], Dt), t;\\n}\\nfunction Rt() {\\n\\treturn H[H.length - 1];\\n}\\nfunction K(t) {\\n\\tif (!t[p])\\n\\t\\treturn;\\n\\tlet { value: e, listeners: n } = t[p], r = Rt();\\n\\treturn r && n.add(r), g.has(r) && g.get(r).add(t), e;\\n}\\nfunction dt(t, e, n) {\\n\\tif (!t[p])\\n\\t\\treturn;\\n\\tlet r = t[p];\\n\\tif (!(!n && r.value === e))\\n\\t\\treturn r.value = e, r.listeners.forEach((o) => o(e)), e;\\n}\\nfunction Q(t, e) {\\n\\tif (t[p])\\n\\t\\treturn t[p].listeners.add(e);\\n}\\nfunction L(t, e, n) {\\n\\tlet r = t[p];\\n\\tif (!r)\\n\\t\\treturn;\\n\\tlet o = r.listeners.delete(e);\\n\\tif (n && !r.listeners.size) {\\n\\t\\tif (E.clear(t), !g.has(r))\\n\\t\\t\\treturn o;\\n\\t\\tlet c = g.get(r);\\n\\t\\tif (!g.has(c))\\n\\t\\t\\treturn o;\\n\\t\\tg.get(c).forEach((i) => L(i, c, !0));\\n\\t}\\n\\treturn o;\\n}\\n\\n// signals.js\\nB(ut);\\nexport {\\n\\tE as S,\\n\\tP as assign,\\n\\tnt as assignAttribute,\\n\\tht as chainableAppend,\\n\\tgt as classListDeclarative,\\n\\tj as createElement,\\n\\tqt as createElementNS,\\n\\tZt as customElementRender,\\n\\tyt as customElementWithDDE,\\n\\tQt as dispatchEvent,\\n\\tj as el,\\n\\tqt as elNS,\\n\\tvt as elementAttribute,\\n\\tFt as empty,\\n\\tz as isSignal,\\n\\tyt as lifecyclesToEvents,\\n\\t_t as observedAttributes,\\n\\tw as on,\\n\\tB as registerReactivity,\\n\\tm as scope,\\n\\tE as signal,\\n\\tWt as simulateSlots\\n};\\n\"}],\"toolbar\":false}"));</script><div class="prevNext"><!--<dde:mark type="component" name="prevNext" host="parentElement" ssr/>--><!--<dde:mark type="component" name="pageLink" host="this" ssr/>--><a rel="next" href="p02-elements" title="Basic concepts of elements modifications and creations."><!--<dde:mark type="component" name="pageLink" host="parentElement" ssr/>-->(next) Elements</a></div></main></body></html> |