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https://github.com/jaandrle/deka-dom-el
synced 2024-11-24 17:39:36 +01:00
🚀 simplify text, S⇔reactive?, todo as an example
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10
src/dom.js
10
src/dom.js
@ -1,3 +1,4 @@
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import { addSignalListener, isSignal } from './signals.js';
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let namespace_curr= "html";
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export function namespace(namespace){
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namespace_curr= namespace==="svg" ? "http://www.w3.org/2000/svg" : namespace;
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@ -6,6 +7,8 @@ export function namespace(namespace){
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};
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}
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export function createElement(tag, attributes, ...connect){
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if(typeof attributes==="string" || ( isSignal(attributes) /* TODO && isText*/ ))
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attributes= { textContent: attributes };
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let el;
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switch(true){
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case typeof tag==="function": el= tag(attributes || undefined); break;
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@ -19,15 +22,16 @@ export function createElement(tag, attributes, ...connect){
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}
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export { createElement as el };
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import { watch, isSignal } from './signals.js';
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export function assign(element, ...attributes){
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if(!attributes.length) return element;
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const is_svg= element instanceof SVGElement;
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const setRemoveAttr= (is_svg ? setRemoveNS : setRemove).bind(null, element, "Attribute");
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Object.entries(Object.assign({}, ...attributes)).forEach(function assignNth([ key, attr ]){
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if(isSignal(attr)) //TODO: unmounted
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return watch(()=> assignNth([ key, attr() ]));
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if(isSignal(attr)){ //TODO: unmounted
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addSignalListener(attr, attr=> assignNth([ key, attr ]));
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attr= attr();
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}
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if(key[0]==="=") return setRemoveAttr(key.slice(1), attr);
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if(key[0]===".") return setDelete(element, key.slice(1), attr);
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if(typeof attr === "object"){
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@ -15,7 +15,8 @@ export function S(value){
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watch(()=> out(value()));
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return out;
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}
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export function reactive(data){
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S.reactive= reactive;
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function reactive(data){
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if(isSignal(data))
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return data;
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if(typeof data!=="object" || data===null)
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@ -37,10 +38,14 @@ export function reactive(data){
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const signal= (...value)=>
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value.length ? write(signal, reactive(value[0])) : read(signal[mark]);
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return createWrapObject(type, toSignal(signal, data));
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}
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};
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const stack= [];
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export function watch(context){
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stack.push(context);
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stack.push(function contextReWatch(){
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stack.push(contextReWatch);
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context();
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stack.pop();
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});
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context();
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stack.pop();
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};
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@ -103,4 +108,5 @@ function read({ value, listeners }){
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function write(signal, value){
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signal[mark].value= value;
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signal[mark].listeners.forEach(fn=> fn(value))
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return value;
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}
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@ -5,7 +5,7 @@
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<!-- DEL CSP https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP | https://github.com/Prinzhorn/minimal-csp -->
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<!-- DEL https://github.com/jensimmons/cssremedy -->
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<link rel="stylesheet" href="https://github.com/jensimmons/cssremedy/raw/master/css/remedy.css">
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<!-- <link rel="stylesheet" href="https://github.com/jensimmons/cssremedy/raw/master/css/remedy.css"> -->
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<title>Small DOM element creation enhancements</title>
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<meta name="description" content="Making creatig elements easier">
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103
test/index.js
103
test/index.js
@ -1,18 +1,17 @@
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import { S, reactive, watch, el, namespace, assign, on, dispatch } from "../index.js";
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Object.assign(globalThis, { S, reactive, watch, el, namespace, assign, on, dispatch });
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import { S, empty, watch, el, namespace, assign, on, dispatch } from "../index.js";
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Object.assign(globalThis, { S, watch, el, namespace, assign, on, dispatch });
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const { style, css }= createStyle();
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globalThis.test= console.log;
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const app= el(component, null, on("change", globalThis.test));
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const style= createStyle();
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const app= el(todosComponent);
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dispatch("change", "Peter")(app);
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console.log(app, app instanceof HTMLDivElement);
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document.head.append(style);
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document.head.append(style.element);
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document.body.append(app);
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function component({ name= "World", surname= "" }= {}){
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const className= "naiveForm";
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css`
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function todosComponent({ todos= [] }= {}){
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const className= "basicTodoForm";
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style.css`
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.${className}{
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display: flex;
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flex-flow: column nowrap;
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@ -21,34 +20,80 @@ function component({ name= "World", surname= "" }= {}){
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margin-inline-start: .5em;
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}
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`;
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const store= reactive({ name, surname });
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const full_name= S(()=> store.name()+" "+store.surname());
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on(full_name, console.log);
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todos= S.reactive(todos);
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globalThis.__todos__= todos; //TODO
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const name= "todoName";
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const onsubmit= on("submit", event=> {
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const value= event.target.elements[name].value;
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if(!value) return;
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return el("div", { className }, on.connected(console.log)).append(
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el("p").append(
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el("#text", { textContent: "Hello " }),
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el("strong", { textContent: full_name }),
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el("#text", { textContent: "!" }),
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event.preventDefault();
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todos.push(value)
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event.target.elements[name].value= "";
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});
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const onremove= on("click", event=> {
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const value= Number(event.target.value);
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if(Number.isNaN(value)) return;
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event.preventDefault();
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todos.splice(value, 1);
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});
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return el("div", { className }).append(
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el("div").append(
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el("h1", "Todos:"),
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elR(todos,
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ts=> !ts.length
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? el("p", "No todos yet")
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: ts.map((t, i)=> el(todoComponent, { textContent: t, value: i, className }, onremove)))
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),
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el("label").append(
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el("#text", { textContent: "Set name:" }),
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el("input", { type: "text", value: store.name },
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on("change", ev=> store.name(ev.target.value))),
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),
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el("label").append(
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el("#text", { textContent: "Set surname:" }),
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el("input", { type: "text", value: store.surname },
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on("change", ev=> store.surname(ev.target.value))),
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el("form", null, onsubmit).append(
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el("h2", "Add:"),
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el("label", "New todo: ").append(
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el("input", { name, type: "text", required: true }),
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),
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el("button", "+")
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)
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)
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}
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function todoComponent({ textContent, className, value }){
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style.key(todoComponent).css`
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.${className} button{
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margin-inline-start: 1em;
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}
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`;
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return el("p").append(
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el("#text", textContent),
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el("button", { type: "button", value, textContent: "-" })
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);
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}
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function elR(signal, map){
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const mark= document.createComment("reactive");
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const out= el("<>").append(mark);
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let cache;
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const toEls= v=> {
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let els= map(v);
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if(!Array.isArray(els))
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els= [ els ];
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if(cache) cache.forEach(el=> el.remove());
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cache= els;
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mark.before(...els);
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};
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on(signal, toEls);
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toEls(signal());
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return out;
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}
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function createStyle(){
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const style= el("style");
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const element= el("style");
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const store= new WeakSet();
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return {
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style,
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element,
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key(k){
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if(store.has(k)) return { css: ()=> {} };
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store.add(k);
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return this;
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},
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css(...args){
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style.appendChild(el("#text", { textContent: String.raw(...args) }));
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element.appendChild(el("#text", { textContent: String.raw(...args) }));
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}
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};
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}
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