mirror of
https://github.com/jaandrle/deka-dom-el
synced 2024-11-24 09:29:37 +01:00
5 lines
12 KiB
JavaScript
5 lines
12 KiB
JavaScript
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M=[],h=new WeakMap;function m(e,t){if(typeof e!="function")return Q(e,t);if(W(e))return e;let n=Q(),r=function(){let[o,...c]=h.get(r);if(h.set(r,new Set([o])),M.push(r),n(e()),M.pop(),!c.length)return;let s=h.get(r);for(let d of c)s.has(d)||S(d,r)};return h.set(n[p],r),h.set(r,new Set([n])),r(),n}m.action=function(e,t,...n){let r=e[p],{actions:o}=r;if(!o||!Reflect.has(o,t))throw new Error(`'${e}' has no action with name '${t}'!`);if(o[t].apply(r,n),r.skip)return Reflect.deleteProperty(r,"skip");r.listeners.forEach(c=>c(r.value))};m.on=function e(t,n,r={}){let{signal:o}=r;if(!(o&&o.aborted)){if(Array.isArray(t))return t.forEach(c=>e(c,n,r));U(t,n),o&&o.addEventListener("abort",()=>S(t,n))}};m.symbols={onclear:Symbol.for("Observable.onclear")};m.clear=function(...e){for(let n of e){Reflect.deleteProperty(n,"toJSON");let r=n[p];r.onclear.forEach(o=>o.call(r)),t(n,r),Reflect.deleteProperty(n,p)}function t(n,r){r.listeners.forEach(o=>{if(r.listeners.delete(o),!h.has(o))return;let c=h.get(o);c.delete(n),!(c.size>1)&&(n.clear(...c),h.delete(o))})}};var k="__dde_reactive";m.el=function(e,t){let n=y.mark({type:"reactive"},!1),r=n.end,o=document.createDocumentFragment();o.append(n,r);let{current:c}=b,s=d=>{if(!n.parentNode||!r.parentNode)return S(e,s);b.push(c);let u=t(d);b.pop(),Array.isArray(u)||(u=[u]);let l=n;for(;(l=n.nextSibling)!==r;)l.remove();n.after(...u)};return U(e,s),Y(e,s,n,t),s(e()),o};var R="__dde_attributes";m.attribute=function(e,t=null){let n=m(t),r;return b.host(o=>{if(r=o,O(r,"has",e)?n(O(r,"get",e)):t!==null&&O(r,"set",e,t),o[R]){o[R][e]=n;return}r[R]={[e]:n},_.attributeChanged(function({detail:s}){/*! This maps attributes to observables (`S.attribute`).
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* Investigate `__dde_attributes` key of the element.*/let[d,u]=s,l=r[R][d];if(l)return l(u)})(r),_.disconnected(function(){/*! This removes all observables mapped to attributes (`S.attribute`).
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* Investigate `__dde_attributes` key of the element.*/m.clear(...Object.values(r[R]))})(r)}),new Proxy(n,{apply(o,c,s){if(!s.length)return o();let d=s[0];return O(r,"set",e,d)}})};var X={isObservable:W,processReactiveAttribute(e,t,n,r){if(!W(n))return n;let o=c=>r(t,c);return U(n,o),Y(n,o,e,t),n()}};function Y(e,t,...n){let{current:r}=b;r.prevent||r.host(function(o){o[k]||(o[k]=[],_.disconnected(()=>o[k].forEach(([[c,s]])=>S(c,s,c[p]?.host()===o)))(o)),o[k].push([[e,t],...n])})}function Q(e,t){let n=(...r)=>r.length?le(n,...r):de(n);return ue(n,e,t)}var fe=Object.assign(Object.create(null),{stopPropagation(){this.skip=!0}}),q=class extends Error{constructor(){super();let[t,...n]=this.stack.split(`
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`),r=t.slice(t.indexOf("@"),t.indexOf(".js:")+4);this.stack=n.find(o=>!o.includes(r))}};function ue(e,t,n){let r=[];B(n)!=="[object Object]"&&(n={});let{onclear:o}=m.symbols;n[o]&&(r.push(n[o]),Reflect.deleteProperty(n,o));let{host:c}=b;return Reflect.defineProperty(e,p,{value:{value:t,actions:n,onclear:r,host:c,listeners:new Set,defined:new q},enumerable:!1,writable:!1,configurable:!0}),e.toJSON=()=>e(),Object.setPrototypeOf(e[p],fe),e}function ae(){return M[M.length-1]}function de(e){if(!e[p])return;let{value:t,listeners:n}=e[p],r=ae();return r&&n.add(r),h.has(r)&&h.get(r).add(e),t}function le(e,t,n){if(!e[p])return;let r=e[p];if(!(!n&&r.value===t))return r.value=t,r.listeners.forEach(o=>o(t)),t}function U(e,t){if(e[p])return e[p].listeners.add(t)}function S(e,t,n){let r=e[p];if(!r)return;let o=r.listeners.delete(t);if(n&&!r.listeners.size){if(e.clear(e),!h.has(r))return o;let c=h.get(r);if(!h.has(c))return o;h.get(c).forEach(s=>S(s,c,!0))}return o}T(X);export{m as O,P as assign,Z as assignAttribute,te as chainableAppend,ne as classListDeclarative,y as createElement,Ee as createElementNS,we as dispatchEvent,y as el,Ee as elNS,O as elementAttribute,xe as empty,W as isObservable,m as observable,_ as on,T as registerReactivity,b as scope,_e as simulateSlots};
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