mirror of
https://github.com/MercuryWorkshop/dreamlandjs.git
synced 2025-05-15 15:10:02 -04:00
split css html and js
This commit is contained in:
CoolElectronics
parent
654e44dbd7
commit
0c935f3c25
7 changed files with 634 additions and 624 deletions
1
.gitignore
vendored
1
.gitignore
vendored
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@ -1,4 +1,5 @@
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examples/lib/
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dist/
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node_modules
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index.js
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a.js
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626
AliceJS.js
626
AliceJS.js
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@ -1,623 +1,3 @@
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// The global list of "references", as captured by the proxy in stateful
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let __reference_stack = [];
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// We add some extra properties into various objects throughout, better to use symbols and not interfere
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let ALICEJS_REFERENCES_MAPPING = Symbol();
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let ALICEJS_REFERENCES_MARKER = Symbol();
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let ALICEJS_STATEFUL_LISTENERS = Symbol();
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// Say you have some code like
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//// let state = stateful({
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//// a: 1
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//// })
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//// let elm = <p>{window.use(state.a)}</p>
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//
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// According to the standard, the order of events is as follows:
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// - the getter for window.use gets called, setting __reference_stack to an empty list
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// - the proxy for state.a is triggered, pushing { state, "a", Proxy(state) } onto __reference_stack
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// - the function that the getter returns is called, popping everything off the stack
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// - the JSX factory h() is now passed the *reference* of state.a, not the value
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Object.defineProperty(window, "use", {
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get: () => {
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__reference_stack = [];
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return (_sink, mapping) => {
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let references = __reference_stack;
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__reference_stack = [];
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references[ALICEJS_REFERENCES_MARKER] = true;
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if (mapping) references[ALICEJS_REFERENCES_MAPPING] = mapping;
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return references;
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};
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}
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});
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Object.assign(window, { h, html, stateful, handle, useValue, css, rule, styled: { new: css, rule: rule } });
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// This wraps the target in a proxy, doing 2 things:
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// - whenever a property is accessed, update the reference stack
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// - whenever a property is set, notify the subscribed listeners
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// This is what makes our "pass-by-reference" magic work
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export function stateful(target) {
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target[ALICEJS_STATEFUL_LISTENERS] = [];
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const proxy = new Proxy(target, {
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get(target, property, proxy) {
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__reference_stack.push({ target, property, proxy });
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return Reflect.get(target, property, proxy);
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},
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set(target, property, val) {
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for (const listener of target[ALICEJS_STATEFUL_LISTENERS]) {
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listener(target, property, val);
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}
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return Reflect.set(target, property, val);
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},
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});
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return proxy;
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}
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function isAJSReferences(arr) {
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return arr instanceof Array && ALICEJS_REFERENCES_MARKER in arr
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}
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// This lets you subscribe to a stateful object
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export function handle(references, callback) {
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if (!isAJSReferences(references))
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throw new Error("Not an AliceJS reference set!");
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if (ALICEJS_REFERENCES_MAPPING in references) {
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const mapping = references[ALICEJS_REFERENCES_MAPPING];
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const used_props = [];
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const used_targets = [];
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const values = new Map();
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const pairs = [];
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const partial_update = (target, prop, val) => {
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if (used_props.includes(prop) && used_targets.includes(target)) {
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values.get(target)[prop] = val;
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}
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};
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const full_update = () => {
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const flattened_values = pairs.map(
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(pair) => values.get(pair[0])[pair[1]],
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);
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const value = mapping(...flattened_values.reverse());
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callback(value);
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};
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for (const p of references) {
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const target = p.target;
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const prop = p.property;
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used_props.push(prop);
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used_targets.push(target);
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pairs.push([target, prop]);
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if (!values.has(target)) {
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values.set(target, {});
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}
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partial_update(target, prop, target[prop]);
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target[ALICEJS_STATEFUL_LISTENERS].push((t, p, v) => {
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partial_update(t, p, v);
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full_update();
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});
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}
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full_update();
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} else {
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const reference = references[references.length - 1];
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const subscription = (target, prop, val) => {
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if (prop === reference.property && target === reference.target) {
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callback(val);
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}
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};
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reference.target[ALICEJS_STATEFUL_LISTENERS].push(subscription);
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subscription(reference.target, reference.property, reference.target[reference.property]);
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}
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}
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export function useValue(references) {
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let reference = references[references.length - 1];
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return reference.proxy[reference.property];
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}
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// Actual JSX factory. Responsible for creating the HTML elements and all of the *reactive* syntactic sugar
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export function h(type, props, ...children) {
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if (typeof type === "function") {
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let newthis = stateful(Object.create(type.prototype));
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for (const name in props) {
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const references = props[name];
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if (isAJSReferences(references) && name.startsWith("bind:")) {
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let reference = references[references.length - 1];
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const propname = name.substring(5);
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if (propname == "this") {
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reference.proxy[reference.property] = newthis;
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} else {
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// component two way data binding!! (exact same behavior as svelte:bind)
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let isRecursive = false;
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handle(references, value => {
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if (isRecursive) {
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isRecursive = false;
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return;
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}
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isRecursive = true;
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newthis[propname] = value
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});
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handle(use(newthis[propname]), value => {
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if (isRecursive) {
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isRecursive = false;
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return;
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}
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isRecursive = true;
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reference.proxy[reference.property] = value;
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});
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}
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delete props[name];
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}
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}
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Object.assign(newthis, props);
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let slot = [];
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for (const child of children) {
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JSXAddChild(child, slot.push.bind(slot));
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}
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let elm = type.apply(newthis, [slot]);
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elm.$ = newthis;
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newthis.root = elm;
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if (newthis.css) {
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elm.classList.add(newthis.css);
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elm.classList.add("self");
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}
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return elm;
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}
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const elm = document.createElement(type);
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for (const child of children) {
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JSXAddChild(child, elm.appendChild.bind(elm));
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}
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if (!props) return elm;
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function useProp(name, callback) {
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if (!(name in props)) return;
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let prop = props[name];
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callback(prop);
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delete props[name];
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}
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// insert an element at the start
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useProp("before", callback => {
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JSXAddChild(callback());
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})
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// if/then/else syntax
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useProp("if", condition => {
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let thenblock = props["then"];
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let elseblock = props["else"];
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if (isAJSReferences(condition)) {
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if (thenblock) elm.appendChild(thenblock);
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if (elseblock) elm.appendChild(elseblock);
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handle(condition, val => {
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if (thenblock) {
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if (val) {
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thenblock.style.display = "";
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if (elseblock) elseblock.style.display = "none";
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} else {
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thenblock.style.display = "none";
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if (elseblock) elseblock.style.display = "";
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}
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} else {
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if (val) {
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elm.style.display = "";
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} else {
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elm.style.display = "none";
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}
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}
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});
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} else {
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if (thenblock) {
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if (condition) {
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elm.appendChild(thenblock);
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} else if (elseblock) {
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elm.appendChild(elseblock);
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}
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} else {
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if (condition) {
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elm.appendChild(thenblock);
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} else if (elseblock) {
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elm.appendChild(elseblock);
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} else {
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elm.style.display = "none";
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return document.createTextNode("");
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}
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}
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}
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delete props["then"];
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delete props["else"];
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});
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if ("for" in props && "do" in props) {
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const predicate = props["for"];
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const closure = props["do"];
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if (isAJSReferences(predicate)) {
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const __elms = [];
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let lastpredicate = [];
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handle(predicate, val => {
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if (
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Object.keys(val).length &&
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Object.keys(val).length == lastpredicate.length
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) {
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let i = 0;
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for (const index in val) {
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if (
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deepEqual(val[index], lastpredicate[index])
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) {
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continue;
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}
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const part = closure(val[index], index, val);
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elm.replaceChild(part, __elms[i]);
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__elms[i] = part;
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i += 1;
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}
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lastpredicate = Object.keys(
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JSON.parse(JSON.stringify(val)),
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);
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} else {
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for (const part of __elms) {
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part.remove();
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}
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for (const index in val) {
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const value = val[index];
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const part = closure(value, index, val);
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if (part instanceof HTMLElement) {
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__elms.push(part);
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elm.appendChild(part);
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}
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}
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lastpredicate = [];
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}
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});
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} else {
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for (const index in predicate) {
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const value = predicate[index];
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const part = closure(value, index, predicate);
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if (part instanceof Node) elm.appendChild(part);
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}
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}
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delete props["for"];
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delete props["do"];
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}
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// insert an element at the end
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useProp("after", callback => {
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JSXAddChild(callback());
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})
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for (const name in props) {
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const references = props[name];
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if (isAJSReferences(references) && name.startsWith("bind:")) {
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let reference = references[references.length - 1];
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const propname = name.substring(5);
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if (propname == "this") {
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reference.proxy[reference.property] = elm;
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} else if (propname == "value") {
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handle(references, value => elm.value = value);
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elm.addEventListener("change", () => {
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reference.proxy[reference.property] = elm.value;
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})
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} else if (propname == "checked") {
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handle(references, value => elm.checked = value);
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elm.addEventListener("click", () => {
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reference.proxy[reference.property] = elm.checked;
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})
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}
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delete props[name];
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}
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}
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useProp("class", classlist => {
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if (typeof classlist === "string") {
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elm.className = classlist;
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return;
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}
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if (isAJSReferences(classlist)) {
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handle(classlist, classname => elm.className = classname);
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return;
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}
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for (const name of classlist) {
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if (isAJSReferences(name)) {
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let oldvalue = null;
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handle(name, value => {
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if (typeof oldvalue === "string") {
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elm.classList.remove(oldvalue);
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}
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elm.classList.add(value);
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oldvalue = value;
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});
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} else {
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elm.classList.add(name);
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}
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}
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});
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|
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// apply the non-reactive properties
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for (const name in props) {
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const prop = props[name];
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if (isAJSReferences(prop)) {
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handle(prop, (val) => {
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JSXAddAttributes(elm, name, val);
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});
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} else {
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JSXAddAttributes(elm, name, prop);
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}
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}
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|
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return elm;
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}
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|
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// glue for nested children
|
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function JSXAddChild(child, cb) {
|
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if (isAJSReferences(child)) {
|
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let appended = [];
|
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handle(child, (val) => {
|
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if (appended.length > 1) {
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// this is why we don't encourage arrays (jank)
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appended.forEach(n => n.remove());
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appended = JSXAddChild(val, cb);
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} else if (appended.length > 0) {
|
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let old = appended[0];
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appended = JSXAddChild(val, cb);
|
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if (appended[0]) {
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old.replaceWith(appended[0])
|
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} else {
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old.remove();
|
||||
}
|
||||
} else {
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appended = JSXAddChild(val, cb);
|
||||
}
|
||||
});
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||||
} else if (child instanceof Node) {
|
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cb(child);
|
||||
return [child];
|
||||
} else if (child instanceof Array) {
|
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let elms = [];
|
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for (const childchild of child) {
|
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elms = elms.concat(JSXAddChild(childchild, cb));
|
||||
}
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return elms;
|
||||
} else {
|
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let node = document.createTextNode(child);
|
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cb(node);
|
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return [node];
|
||||
}
|
||||
}
|
||||
|
||||
// Where properties are assigned to elements, and where the *non-reactive* syntax sugar goes
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function JSXAddAttributes(elm, name, prop) {
|
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if (typeof prop === "function" && name === "mount") {
|
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prop(elm);
|
||||
return;
|
||||
}
|
||||
|
||||
if (typeof prop === "function" && name.startsWith("on:")) {
|
||||
const names = name.substring(3);
|
||||
for (const name of names.split("$")) {
|
||||
elm.addEventListener(name, (...args) => {
|
||||
window.$el = elm;
|
||||
prop(...args);
|
||||
});
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (typeof prop === "function" && name.startsWith("observe")) {
|
||||
const observerclass = window[`${name.substring(8)}Observer`];
|
||||
if (!observerclass) {
|
||||
console.error(`Observer ${name} does not exist`);
|
||||
return;
|
||||
}
|
||||
const observer = new observerclass(entries => {
|
||||
for (const entry of entries) {
|
||||
window.$el = elm;
|
||||
prop(entry);
|
||||
}
|
||||
});
|
||||
observer.observe(elm);
|
||||
return;
|
||||
}
|
||||
|
||||
elm.setAttribute(name, prop);
|
||||
}
|
||||
|
||||
function scopify_css(uid, css) {
|
||||
const virtualDoc = document.implementation.createHTMLDocument("");
|
||||
const virtualStyleElement = document.createElement("style");
|
||||
virtualDoc.body.appendChild(virtualStyleElement);
|
||||
|
||||
let cssParsed = "";
|
||||
|
||||
virtualStyleElement.textContent = css;
|
||||
|
||||
//@ts-ignore
|
||||
for (const rule of virtualStyleElement.sheet.cssRules) {
|
||||
rule.selectorText = rule.selectorText.includes("self")
|
||||
? `.${uid}.self${rule.selectorText.replace("self", "")}`
|
||||
: `.${uid} ${rule.selectorText}`;
|
||||
cssParsed += `${rule.cssText}\n`;
|
||||
}
|
||||
|
||||
return cssParsed;
|
||||
}
|
||||
function tagcss(strings, values, isblock) {
|
||||
const uid = `dream-${Array(16)
|
||||
.fill(0)
|
||||
.map(() => {
|
||||
return Math.floor(Math.random() * 16).toString(16);
|
||||
})
|
||||
.join("")}`;
|
||||
|
||||
const styleElement = document.createElement("style");
|
||||
|
||||
document.head.appendChild(styleElement);
|
||||
|
||||
const flattened_template = [];
|
||||
for (const i in strings) {
|
||||
flattened_template.push(strings[i]);
|
||||
if (values[i]) {
|
||||
const prop = values[i];
|
||||
|
||||
if (isAJSReferences(prop)) {
|
||||
const current_i = flattened_template.length;
|
||||
let oldparsed;
|
||||
handle(prop, (val) => {
|
||||
flattened_template[current_i] = String(val);
|
||||
let parsed = flattened_template.join("");
|
||||
if (parsed != oldparsed)
|
||||
if (isblock)
|
||||
styleElement.textContent = scopify_css(
|
||||
uid,
|
||||
parsed,
|
||||
);
|
||||
else
|
||||
styleElement.textContent = `.${uid} { ${parsed}; }`
|
||||
oldparsed = parsed;
|
||||
});
|
||||
} else {
|
||||
flattened_template.push(String(prop));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (isblock) {
|
||||
styleElement.textContent = scopify_css(
|
||||
uid,
|
||||
flattened_template.join(""),
|
||||
);
|
||||
} else {
|
||||
styleElement.textContent = `.${uid} { ${flattened_template.join("")}; }`
|
||||
}
|
||||
|
||||
return uid;
|
||||
}
|
||||
export function rule(strings, ...values) {
|
||||
return tagcss(strings, values, false)
|
||||
}
|
||||
export function css(strings, ...values) {
|
||||
return tagcss(strings, values, true);
|
||||
}
|
||||
|
||||
export function html(strings, ...values) {
|
||||
let flattened = "";
|
||||
let markers = {};
|
||||
for (const i in strings) {
|
||||
let string = strings[i];
|
||||
let value = values[i];
|
||||
|
||||
flattened += string;
|
||||
if (i < values.length) {
|
||||
let dupe = Object.values(markers).findIndex(v => v == value);
|
||||
if (dupe !== -1) {
|
||||
flattened += Object.keys(markers)[dupe];
|
||||
} else {
|
||||
let marker = "m" + Array(16).fill(0).map(() => Math.floor(Math.random() * 16).toString(16)).join("");
|
||||
markers[marker] = value;
|
||||
flattened += marker;
|
||||
}
|
||||
}
|
||||
}
|
||||
let dom = new DOMParser().parseFromString(flattened, "text/html");
|
||||
if (dom.body.children.length !== 1)
|
||||
throw "html builder needs exactly one child";
|
||||
|
||||
function wraph(elm) {
|
||||
let nodename = elm.nodeName.toLowerCase();
|
||||
if (nodename === "#text")
|
||||
return elm.textContent;
|
||||
if (nodename in markers)
|
||||
nodename = markers[nodename];
|
||||
|
||||
let children = [...elm.childNodes].map(wraph);
|
||||
for (let i = 0; i < children.length; i++) {
|
||||
let text = children[i];
|
||||
if (typeof text !== "string") continue;
|
||||
for (const [marker, value] of Object.entries(markers)) {
|
||||
if (!text) break;
|
||||
if (!text.includes(marker)) continue;
|
||||
let before;
|
||||
[before, text] = text.split(marker);
|
||||
children = [
|
||||
...children.slice(0, i),
|
||||
before,
|
||||
value,
|
||||
text,
|
||||
...children.slice(i + 1)
|
||||
];
|
||||
i += 2;
|
||||
}
|
||||
}
|
||||
|
||||
let attributes = {};
|
||||
for (const attr of [...elm.attributes]) {
|
||||
let val = attr.nodeValue;
|
||||
if (val in markers)
|
||||
val = markers[val];
|
||||
attributes[attr.name] = val;
|
||||
}
|
||||
|
||||
return h(nodename, attributes, children);
|
||||
}
|
||||
|
||||
return wraph(dom.body.children[0]);
|
||||
}
|
||||
|
||||
function deepEqual(object1, object2) {
|
||||
const keys1 = Object.keys(object1);
|
||||
const keys2 = Object.keys(object2);
|
||||
|
||||
if (keys1.length !== keys2.length) {
|
||||
return false;
|
||||
}
|
||||
|
||||
for (const key of keys1) {
|
||||
const val1 = object1[key];
|
||||
const val2 = object2[key];
|
||||
const areObjects = isObject(val1) && isObject(val2);
|
||||
if (
|
||||
(areObjects && !deepEqual(val1, val2)) ||
|
||||
(!areObjects && val1 !== val2)
|
||||
) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
function isObject(object) {
|
||||
return object != null && typeof object === "object";
|
||||
}
|
||||
export * from "./js";
|
||||
export * from "./css";
|
||||
export * from "./html";
|
||||
|
|
|
|||
79
css.js
Normal file
79
css.js
Normal file
|
|
@ -0,0 +1,79 @@
|
|||
Object.assign(window, { css, rule, styled: { new: css, rule: rule } });
|
||||
|
||||
function scopify_css(uid, css) {
|
||||
const virtualDoc = document.implementation.createHTMLDocument("");
|
||||
const virtualStyleElement = document.createElement("style");
|
||||
virtualDoc.body.appendChild(virtualStyleElement);
|
||||
|
||||
let cssParsed = "";
|
||||
|
||||
virtualStyleElement.textContent = css;
|
||||
|
||||
//@ts-ignore
|
||||
for (const rule of virtualStyleElement.sheet.cssRules) {
|
||||
rule.selectorText = rule.selectorText.includes("self")
|
||||
? `.${uid}.self${rule.selectorText.replace("self", "")}`
|
||||
: `.${uid} ${rule.selectorText}`;
|
||||
cssParsed += `${rule.cssText}\n`;
|
||||
}
|
||||
|
||||
return cssParsed;
|
||||
}
|
||||
function tagcss(strings, values, isblock) {
|
||||
const uid = `dream-${Array(16)
|
||||
.fill(0)
|
||||
.map(() => {
|
||||
return Math.floor(Math.random() * 16).toString(16);
|
||||
})
|
||||
.join("")}`;
|
||||
|
||||
const styleElement = document.createElement("style");
|
||||
|
||||
document.head.appendChild(styleElement);
|
||||
|
||||
const flattened_template = [];
|
||||
for (const i in strings) {
|
||||
flattened_template.push(strings[i]);
|
||||
if (values[i]) {
|
||||
const prop = values[i];
|
||||
|
||||
if (isAJSReferences(prop)) {
|
||||
const current_i = flattened_template.length;
|
||||
let oldparsed;
|
||||
handle(prop, (val) => {
|
||||
flattened_template[current_i] = String(val);
|
||||
let parsed = flattened_template.join("");
|
||||
if (parsed != oldparsed)
|
||||
if (isblock)
|
||||
styleElement.textContent = scopify_css(
|
||||
uid,
|
||||
parsed,
|
||||
);
|
||||
else
|
||||
styleElement.textContent = `.${uid} { ${parsed}; }`
|
||||
oldparsed = parsed;
|
||||
});
|
||||
} else {
|
||||
flattened_template.push(String(prop));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (isblock) {
|
||||
styleElement.textContent = scopify_css(
|
||||
uid,
|
||||
flattened_template.join(""),
|
||||
);
|
||||
} else {
|
||||
styleElement.textContent = `.${uid} { ${flattened_template.join("")}; }`
|
||||
}
|
||||
|
||||
return uid;
|
||||
}
|
||||
export function rule(strings, ...values) {
|
||||
return tagcss(strings, values, false)
|
||||
}
|
||||
export function css(strings, ...values) {
|
||||
return tagcss(strings, values, true);
|
||||
}
|
||||
|
||||
2
csspost.js
Normal file
2
csspost.js
Normal file
|
|
@ -0,0 +1,2 @@
|
|||
(()=>{Object.assign(window,{css:f,rule:d,styled:{new:f,rule:d}});function u(t,o){let r=document.implementation.createHTMLDocument(""),n=document.createElement("style");r.body.appendChild(n);let s="";n.textContent=o;for(let e of n.sheet.cssRules)e.selectorText=e.selectorText.includes("self")?`.${t}.self${e.selectorText.replace("self","")}`:`.${t} ${e.selectorText}`,s+=`${e.cssText}
|
||||
`;return s}function p(t,o,r){let n=`dream-${Array(16).fill(0).map(()=>Math.floor(Math.random()*16).toString(16)).join("")}`,s=document.createElement("style");document.head.appendChild(s);let e=[];for(let c in t)if(e.push(t[c]),o[c]){let i=o[c];if(isAJSReferences(i)){let m=e.length,a;handle(i,x=>{e[m]=String(x);let l=e.join("");l!=a&&(r?s.textContent=u(n,l):s.textContent=`.${n} { ${l}; }`),a=l})}else e.push(String(i))}return r?s.textContent=u(n,e.join("")):s.textContent=`.${n} { ${e.join("")}; }`,n}function d(t,...o){return p(t,o,!1)}function f(t,...o){return p(t,o,!0)}})();
|
||||
65
html.js
Normal file
65
html.js
Normal file
|
|
@ -0,0 +1,65 @@
|
|||
|
||||
export function html(strings, ...values) {
|
||||
let flattened = "";
|
||||
let markers = {};
|
||||
for (const i in strings) {
|
||||
let string = strings[i];
|
||||
let value = values[i];
|
||||
|
||||
flattened += string;
|
||||
if (i < values.length) {
|
||||
let dupe = Object.values(markers).findIndex(v => v == value);
|
||||
if (dupe !== -1) {
|
||||
flattened += Object.keys(markers)[dupe];
|
||||
} else {
|
||||
let marker = "m" + Array(16).fill(0).map(() => Math.floor(Math.random() * 16).toString(16)).join("");
|
||||
markers[marker] = value;
|
||||
flattened += marker;
|
||||
}
|
||||
}
|
||||
}
|
||||
let dom = new DOMParser().parseFromString(flattened, "text/html");
|
||||
if (dom.body.children.length !== 1)
|
||||
throw "html builder needs exactly one child";
|
||||
|
||||
function wraph(elm) {
|
||||
let nodename = elm.nodeName.toLowerCase();
|
||||
if (nodename === "#text")
|
||||
return elm.textContent;
|
||||
if (nodename in markers)
|
||||
nodename = markers[nodename];
|
||||
|
||||
let children = [...elm.childNodes].map(wraph);
|
||||
for (let i = 0; i < children.length; i++) {
|
||||
let text = children[i];
|
||||
if (typeof text !== "string") continue;
|
||||
for (const [marker, value] of Object.entries(markers)) {
|
||||
if (!text) break;
|
||||
if (!text.includes(marker)) continue;
|
||||
let before;
|
||||
[before, text] = text.split(marker);
|
||||
children = [
|
||||
...children.slice(0, i),
|
||||
before,
|
||||
value,
|
||||
text,
|
||||
...children.slice(i + 1)
|
||||
];
|
||||
i += 2;
|
||||
}
|
||||
}
|
||||
|
||||
let attributes = {};
|
||||
for (const attr of [...elm.attributes]) {
|
||||
let val = attr.nodeValue;
|
||||
if (val in markers)
|
||||
val = markers[val];
|
||||
attributes[attr.name] = val;
|
||||
}
|
||||
|
||||
return h(nodename, attributes, children);
|
||||
}
|
||||
|
||||
return wraph(dom.body.children[0]);
|
||||
}
|
||||
|
||||
483
js.js
Normal file
483
js.js
Normal file
|
|
@ -0,0 +1,483 @@
|
|||
// The global list of "references", as captured by the proxy in stateful
|
||||
let __reference_stack = [];
|
||||
|
||||
// We add some extra properties into various objects throughout, better to use symbols and not interfere
|
||||
let ALICEJS_REFERENCES_MAPPING = Symbol();
|
||||
let ALICEJS_REFERENCES_MARKER = Symbol();
|
||||
let ALICEJS_STATEFUL_LISTENERS = Symbol();
|
||||
|
||||
// Say you have some code like
|
||||
//// let state = stateful({
|
||||
//// a: 1
|
||||
//// })
|
||||
//// let elm = <p>{window.use(state.a)}</p>
|
||||
//
|
||||
// According to the standard, the order of events is as follows:
|
||||
// - the getter for window.use gets called, setting __reference_stack to an empty list
|
||||
// - the proxy for state.a is triggered, pushing { state, "a", Proxy(state) } onto __reference_stack
|
||||
// - the function that the getter returns is called, popping everything off the stack
|
||||
// - the JSX factory h() is now passed the *reference* of state.a, not the value
|
||||
Object.defineProperty(window, "use", {
|
||||
get: () => {
|
||||
__reference_stack = [];
|
||||
return (_sink, mapping) => {
|
||||
let references = __reference_stack;
|
||||
__reference_stack = [];
|
||||
|
||||
references[ALICEJS_REFERENCES_MARKER] = true;
|
||||
if (mapping) references[ALICEJS_REFERENCES_MAPPING] = mapping;
|
||||
return references;
|
||||
};
|
||||
}
|
||||
});
|
||||
Object.assign(window, { h, stateful, handle, useValue });
|
||||
|
||||
// This wraps the target in a proxy, doing 2 things:
|
||||
// - whenever a property is accessed, update the reference stack
|
||||
// - whenever a property is set, notify the subscribed listeners
|
||||
// This is what makes our "pass-by-reference" magic work
|
||||
export function stateful(target) {
|
||||
target[ALICEJS_STATEFUL_LISTENERS] = [];
|
||||
|
||||
const proxy = new Proxy(target, {
|
||||
get(target, property, proxy) {
|
||||
__reference_stack.push({ target, property, proxy });
|
||||
return Reflect.get(target, property, proxy);
|
||||
},
|
||||
set(target, property, val) {
|
||||
for (const listener of target[ALICEJS_STATEFUL_LISTENERS]) {
|
||||
listener(target, property, val);
|
||||
}
|
||||
return Reflect.set(target, property, val);
|
||||
},
|
||||
});
|
||||
|
||||
return proxy;
|
||||
}
|
||||
|
||||
export function isAJSReferences(arr) {
|
||||
return arr instanceof Array && ALICEJS_REFERENCES_MARKER in arr
|
||||
}
|
||||
|
||||
// This lets you subscribe to a stateful object
|
||||
export function handle(references, callback) {
|
||||
if (!isAJSReferences(references))
|
||||
throw new Error("Not an AliceJS reference set!");
|
||||
|
||||
if (ALICEJS_REFERENCES_MAPPING in references) {
|
||||
const mapping = references[ALICEJS_REFERENCES_MAPPING];
|
||||
const used_props = [];
|
||||
const used_targets = [];
|
||||
|
||||
const values = new Map();
|
||||
|
||||
const pairs = [];
|
||||
|
||||
const partial_update = (target, prop, val) => {
|
||||
if (used_props.includes(prop) && used_targets.includes(target)) {
|
||||
values.get(target)[prop] = val;
|
||||
}
|
||||
};
|
||||
|
||||
const full_update = () => {
|
||||
const flattened_values = pairs.map(
|
||||
(pair) => values.get(pair[0])[pair[1]],
|
||||
);
|
||||
|
||||
const value = mapping(...flattened_values.reverse());
|
||||
|
||||
callback(value);
|
||||
};
|
||||
|
||||
for (const p of references) {
|
||||
const target = p.target;
|
||||
const prop = p.property;
|
||||
|
||||
used_props.push(prop);
|
||||
used_targets.push(target);
|
||||
|
||||
pairs.push([target, prop]);
|
||||
|
||||
if (!values.has(target)) {
|
||||
values.set(target, {});
|
||||
}
|
||||
|
||||
partial_update(target, prop, target[prop]);
|
||||
|
||||
target[ALICEJS_STATEFUL_LISTENERS].push((t, p, v) => {
|
||||
partial_update(t, p, v);
|
||||
full_update();
|
||||
});
|
||||
}
|
||||
full_update();
|
||||
} else {
|
||||
const reference = references[references.length - 1];
|
||||
const subscription = (target, prop, val) => {
|
||||
if (prop === reference.property && target === reference.target) {
|
||||
callback(val);
|
||||
}
|
||||
};
|
||||
reference.target[ALICEJS_STATEFUL_LISTENERS].push(subscription);
|
||||
subscription(reference.target, reference.property, reference.target[reference.property]);
|
||||
}
|
||||
}
|
||||
|
||||
export function useValue(references) {
|
||||
let reference = references[references.length - 1];
|
||||
return reference.proxy[reference.property];
|
||||
}
|
||||
|
||||
// Actual JSX factory. Responsible for creating the HTML elements and all of the *reactive* syntactic sugar
|
||||
export function h(type, props, ...children) {
|
||||
if (typeof type === "function") {
|
||||
let newthis = stateful(Object.create(type.prototype));
|
||||
|
||||
for (const name in props) {
|
||||
const references = props[name];
|
||||
if (isAJSReferences(references) && name.startsWith("bind:")) {
|
||||
let reference = references[references.length - 1];
|
||||
const propname = name.substring(5);
|
||||
if (propname == "this") {
|
||||
reference.proxy[reference.property] = newthis;
|
||||
} else {
|
||||
// component two way data binding!! (exact same behavior as svelte:bind)
|
||||
let isRecursive = false;
|
||||
|
||||
handle(references, value => {
|
||||
if (isRecursive) {
|
||||
isRecursive = false;
|
||||
return;
|
||||
}
|
||||
isRecursive = true;
|
||||
newthis[propname] = value
|
||||
});
|
||||
handle(use(newthis[propname]), value => {
|
||||
if (isRecursive) {
|
||||
isRecursive = false;
|
||||
return;
|
||||
}
|
||||
isRecursive = true;
|
||||
reference.proxy[reference.property] = value;
|
||||
});
|
||||
}
|
||||
delete props[name];
|
||||
}
|
||||
}
|
||||
Object.assign(newthis, props);
|
||||
|
||||
let slot = [];
|
||||
for (const child of children) {
|
||||
JSXAddChild(child, slot.push.bind(slot));
|
||||
}
|
||||
|
||||
let elm = type.apply(newthis, [slot]);
|
||||
elm.$ = newthis;
|
||||
newthis.root = elm;
|
||||
if (newthis.css) {
|
||||
elm.classList.add(newthis.css);
|
||||
elm.classList.add("self");
|
||||
}
|
||||
return elm;
|
||||
}
|
||||
|
||||
|
||||
const elm = document.createElement(type);
|
||||
|
||||
for (const child of children) {
|
||||
JSXAddChild(child, elm.appendChild.bind(elm));
|
||||
}
|
||||
|
||||
if (!props) return elm;
|
||||
|
||||
function useProp(name, callback) {
|
||||
if (!(name in props)) return;
|
||||
let prop = props[name];
|
||||
callback(prop);
|
||||
delete props[name];
|
||||
}
|
||||
|
||||
// insert an element at the start
|
||||
useProp("before", callback => {
|
||||
JSXAddChild(callback());
|
||||
})
|
||||
|
||||
// if/then/else syntax
|
||||
useProp("if", condition => {
|
||||
let thenblock = props["then"];
|
||||
let elseblock = props["else"];
|
||||
|
||||
if (isAJSReferences(condition)) {
|
||||
if (thenblock) elm.appendChild(thenblock);
|
||||
if (elseblock) elm.appendChild(elseblock);
|
||||
|
||||
handle(condition, val => {
|
||||
if (thenblock) {
|
||||
if (val) {
|
||||
thenblock.style.display = "";
|
||||
if (elseblock) elseblock.style.display = "none";
|
||||
} else {
|
||||
thenblock.style.display = "none";
|
||||
|
||||
if (elseblock) elseblock.style.display = "";
|
||||
}
|
||||
} else {
|
||||
if (val) {
|
||||
elm.style.display = "";
|
||||
} else {
|
||||
elm.style.display = "none";
|
||||
}
|
||||
}
|
||||
});
|
||||
} else {
|
||||
if (thenblock) {
|
||||
if (condition) {
|
||||
elm.appendChild(thenblock);
|
||||
} else if (elseblock) {
|
||||
elm.appendChild(elseblock);
|
||||
}
|
||||
} else {
|
||||
if (condition) {
|
||||
elm.appendChild(thenblock);
|
||||
} else if (elseblock) {
|
||||
elm.appendChild(elseblock);
|
||||
} else {
|
||||
elm.style.display = "none";
|
||||
return document.createTextNode("");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
delete props["then"];
|
||||
delete props["else"];
|
||||
});
|
||||
|
||||
if ("for" in props && "do" in props) {
|
||||
const predicate = props["for"];
|
||||
const closure = props["do"];
|
||||
|
||||
if (isAJSReferences(predicate)) {
|
||||
const __elms = [];
|
||||
let lastpredicate = [];
|
||||
handle(predicate, val => {
|
||||
if (
|
||||
Object.keys(val).length &&
|
||||
Object.keys(val).length == lastpredicate.length
|
||||
) {
|
||||
let i = 0;
|
||||
for (const index in val) {
|
||||
if (
|
||||
deepEqual(val[index], lastpredicate[index])
|
||||
) {
|
||||
continue;
|
||||
}
|
||||
const part = closure(val[index], index, val);
|
||||
elm.replaceChild(part, __elms[i]);
|
||||
__elms[i] = part;
|
||||
|
||||
i += 1;
|
||||
}
|
||||
lastpredicate = Object.keys(
|
||||
JSON.parse(JSON.stringify(val)),
|
||||
);
|
||||
} else {
|
||||
for (const part of __elms) {
|
||||
part.remove();
|
||||
}
|
||||
for (const index in val) {
|
||||
const value = val[index];
|
||||
|
||||
const part = closure(value, index, val);
|
||||
if (part instanceof HTMLElement) {
|
||||
__elms.push(part);
|
||||
elm.appendChild(part);
|
||||
}
|
||||
}
|
||||
|
||||
lastpredicate = [];
|
||||
}
|
||||
});
|
||||
} else {
|
||||
for (const index in predicate) {
|
||||
const value = predicate[index];
|
||||
|
||||
const part = closure(value, index, predicate);
|
||||
if (part instanceof Node) elm.appendChild(part);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
delete props["for"];
|
||||
delete props["do"];
|
||||
}
|
||||
|
||||
|
||||
// insert an element at the end
|
||||
useProp("after", callback => {
|
||||
JSXAddChild(callback());
|
||||
})
|
||||
|
||||
for (const name in props) {
|
||||
const references = props[name];
|
||||
if (isAJSReferences(references) && name.startsWith("bind:")) {
|
||||
let reference = references[references.length - 1];
|
||||
const propname = name.substring(5);
|
||||
if (propname == "this") {
|
||||
reference.proxy[reference.property] = elm;
|
||||
} else if (propname == "value") {
|
||||
handle(references, value => elm.value = value);
|
||||
elm.addEventListener("change", () => {
|
||||
reference.proxy[reference.property] = elm.value;
|
||||
})
|
||||
} else if (propname == "checked") {
|
||||
handle(references, value => elm.checked = value);
|
||||
elm.addEventListener("click", () => {
|
||||
reference.proxy[reference.property] = elm.checked;
|
||||
})
|
||||
}
|
||||
delete props[name];
|
||||
}
|
||||
}
|
||||
|
||||
useProp("class", classlist => {
|
||||
if (typeof classlist === "string") {
|
||||
elm.className = classlist;
|
||||
return;
|
||||
}
|
||||
|
||||
if (isAJSReferences(classlist)) {
|
||||
handle(classlist, classname => elm.className = classname);
|
||||
return;
|
||||
}
|
||||
|
||||
for (const name of classlist) {
|
||||
if (isAJSReferences(name)) {
|
||||
let oldvalue = null;
|
||||
handle(name, value => {
|
||||
if (typeof oldvalue === "string") {
|
||||
elm.classList.remove(oldvalue);
|
||||
}
|
||||
elm.classList.add(value);
|
||||
oldvalue = value;
|
||||
});
|
||||
} else {
|
||||
elm.classList.add(name);
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
// apply the non-reactive properties
|
||||
for (const name in props) {
|
||||
const prop = props[name];
|
||||
if (isAJSReferences(prop)) {
|
||||
handle(prop, (val) => {
|
||||
JSXAddAttributes(elm, name, val);
|
||||
});
|
||||
} else {
|
||||
JSXAddAttributes(elm, name, prop);
|
||||
}
|
||||
}
|
||||
|
||||
return elm;
|
||||
}
|
||||
|
||||
// glue for nested children
|
||||
function JSXAddChild(child, cb) {
|
||||
if (isAJSReferences(child)) {
|
||||
let appended = [];
|
||||
handle(child, (val) => {
|
||||
if (appended.length > 1) {
|
||||
// this is why we don't encourage arrays (jank)
|
||||
appended.forEach(n => n.remove());
|
||||
appended = JSXAddChild(val, cb);
|
||||
} else if (appended.length > 0) {
|
||||
let old = appended[0];
|
||||
appended = JSXAddChild(val, cb);
|
||||
if (appended[0]) {
|
||||
old.replaceWith(appended[0])
|
||||
} else {
|
||||
old.remove();
|
||||
}
|
||||
} else {
|
||||
appended = JSXAddChild(val, cb);
|
||||
}
|
||||
});
|
||||
} else if (child instanceof Node) {
|
||||
cb(child);
|
||||
return [child];
|
||||
} else if (child instanceof Array) {
|
||||
let elms = [];
|
||||
for (const childchild of child) {
|
||||
elms = elms.concat(JSXAddChild(childchild, cb));
|
||||
}
|
||||
return elms;
|
||||
} else {
|
||||
let node = document.createTextNode(child);
|
||||
cb(node);
|
||||
return [node];
|
||||
}
|
||||
}
|
||||
|
||||
// Where properties are assigned to elements, and where the *non-reactive* syntax sugar goes
|
||||
function JSXAddAttributes(elm, name, prop) {
|
||||
if (typeof prop === "function" && name === "mount") {
|
||||
window.$el = elm;
|
||||
prop(elm);
|
||||
return;
|
||||
}
|
||||
|
||||
if (typeof prop === "function" && name.startsWith("on:")) {
|
||||
const names = name.substring(3);
|
||||
for (const name of names.split("$")) {
|
||||
elm.addEventListener(name, (...args) => {
|
||||
window.$el = elm;
|
||||
prop(...args);
|
||||
});
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (typeof prop === "function" && name.startsWith("observe")) {
|
||||
const observerclass = window[`${name.substring(8)}Observer`];
|
||||
if (!observerclass) {
|
||||
console.error(`Observer ${name} does not exist`);
|
||||
return;
|
||||
}
|
||||
const observer = new observerclass(entries => {
|
||||
for (const entry of entries) {
|
||||
window.$el = elm;
|
||||
prop(entry);
|
||||
}
|
||||
});
|
||||
observer.observe(elm);
|
||||
return;
|
||||
}
|
||||
|
||||
elm.setAttribute(name, prop);
|
||||
}
|
||||
|
||||
function deepEqual(object1, object2) {
|
||||
const keys1 = Object.keys(object1);
|
||||
const keys2 = Object.keys(object2);
|
||||
|
||||
if (keys1.length !== keys2.length) {
|
||||
return false;
|
||||
}
|
||||
|
||||
for (const key of keys1) {
|
||||
const val1 = object1[key];
|
||||
const val2 = object2[key];
|
||||
const areObjects = isObject(val1) && isObject(val2);
|
||||
if (
|
||||
(areObjects && !deepEqual(val1, val2)) ||
|
||||
(!areObjects && val1 !== val2)
|
||||
) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
function isObject(object) {
|
||||
return object != null && typeof object === "object";
|
||||
}
|
||||
|
|
@ -3,7 +3,7 @@
|
|||
"version": "1.3.1",
|
||||
"description": "A utilitarian HTML rendering library",
|
||||
"scripts": {
|
||||
"build": "esbuild --minify --bundle AliceJS.js --outfile=index.js && tsc",
|
||||
"build": "esbuild --minify --bundle AliceJS.js --outfile=index.js && esbuild --minify --bundle css.js js.js html.js --outdir=dist/ && tsc",
|
||||
"watch": "esbuild --watch=forever --bundle AliceJS.js --outfile=index.js & tsc --watch"
|
||||
},
|
||||
"keywords": ["html","jsx","framework","alicejs"],
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue