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${} evaluations
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cpq committed
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@@ -13,8 +13,9 @@
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? realsend(JSON.stringify(x))
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: q.push(x);
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const connect = () => {
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if (debug) console.log('WS connect');
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ws = new WebSocket(url);
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ws.onopen = () => { while (q.length) realsend(JSON.stringify(q.shift())); };
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ws.onopen = () => { if (debug) console.log('WS open'); while (q.length) realsend(JSON.stringify(q.shift())); };
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ws.onclose = () => { fail(); setTimeout(connect, 1000); };
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ws.onmessage = e => {
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if (debug) console.log('WS <-', e.data);
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@@ -62,34 +63,34 @@
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const isMock = !!window.frameElement || (window !== window.top);
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const rpc = isMock ? null : Rpc('api/websocket');
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const settings = {data: {}, edits: {}, debug: true};
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const bound = {}; // data_key => [ el1, el2, ...]
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const substitutions = {};
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const userhandlers = {}; // User event handlers
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const fromPath = (path, value) => path.split('.').reverse().reduce((acc, k) => ({ [k]: acc }), value);
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const get = (obj, path) => path.split('.').reduce((o, k) => o?.[k], obj);
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const set = (obj, path, value) => apply(obj, fromPath(path, value));
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const has = (obj, path) => path.split('.').every(k => (obj = obj?.[k]) !== undefined);
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const del = (obj, path) => {
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const keys = path.split('.');
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const last = keys.pop();
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const parent = keys.reduce((o, k) => o?.[k], obj);
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return parent && delete parent[last];
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};
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function safeEval(expr, context) {
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const c = Object.freeze(context);
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const k = Object.keys(c).join(",");
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return Function("x", `"use strict"; const {${k}} = x; return ${expr};`)(c);
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let result;
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try {
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result = Function("x", `"use strict"; const {${k}} = x; return ${expr};`)(c);
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} catch (err) {
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}
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return result;
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}
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// function scanAttr(el, name, val, context) {
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// let res;
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// try {
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// res = safeEval(val, context);
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// } catch (err) {
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// console.error('EVAL', attr.name, attr.value, context);
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// //errors.push({type: 'eval', expr: attr.value});
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// return;
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// }
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// //console.log('xxxx', el);
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// if (name == 'html') {
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// el.innerHTML = res;
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// } else {
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// el[name] = res;
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// }
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// };
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function edit(el, key, val) {
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if (typeof(settings.data[key]) === 'number') {
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const dv = get(settings.data, key);
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if (typeof(dv) === 'number') {
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const v = +val;
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if (isNaN(v)) {
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el.classList.toggle("error", true);
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@@ -97,94 +98,124 @@
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el.classList.toggle("error", false);
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val = v;
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}
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} else if (typeof(settings.data[key]) === 'boolean') {
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} else if (typeof(v) === 'boolean') {
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val = !!val;
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}
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settings.edits[key] = val;
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if (settings.edits[key] == settings.data[key]) {
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delete settings.edits[key];
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set(settings.edits, key, val);
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if (val == dv) {
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del(settings.edits, key);
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el.classList.toggle("edited", false);
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} else {
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el.classList.toggle("edited", true);
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}
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if (el.dataset.autosave) save(new RegExp(key));
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if (el.dataset.autosave) save([key]);
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rescan();
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};
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// Return if any of the keys matching pattern is edited
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function edited(regex) {
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function edited(keys) {
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for (const key of Object.keys(settings.edits)) {
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if (regex.test(key)) return true;
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if (keys.includes(key)) return true;
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}
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return false;
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};
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function scan_bind(el, key, context) {
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if (key in settings.data) {
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if (el.tagName == 'INPUT') {
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if (el.type == 'checkbox') el.checked = context[key];
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if (el.type == 'text') el.value = context[key];
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if (!(key in settings.edits)) {
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el.classList.toggle('edited', false);
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el.classList.toggle('error', false);
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}
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if (!el.bound) el.addEventListener("input", ev => edit(el, key, el.type == 'checkbox' ? ev.target.checked : ev.target.value)), el.bound = true;
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if (!has(context, key)) { console.error('EVAL', key, context); return; }
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const v = get(context, key)
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// console.log(2, key, v);
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if (['INPUT', 'TEXTAREA', 'SELECT'].includes(el.tagName)) {
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if (el.type == 'checkbox') el.checked = v;
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if (el.type == 'text') el.value = v;
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if (!has(settings.edits, key)) {
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el.classList.toggle('edited', false);
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el.classList.toggle('error', false);
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}
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if (!el.bound) el.addEventListener("input", ev => edit(el, key, el.type == 'checkbox' ? ev.target.checked : ev.target.value)), el.bound = true;
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} else {
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console.error(`data-bind: ${key} is not in data`);
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el.innerHTML = v;
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}
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};
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// Save the edits for keys that match pattern
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function save(regex) {
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function save(keys) {
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const changes = {};
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for (const key of Object.keys(settings.edits)) {
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if (regex.test(key)) changes[key] = settings.edits[key];
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for (const key of keys) {
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if (!has(settings.edits, key)) continue;
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set(changes, key, get(settings.edits, key));
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}
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rpc.call('set', changes).then(r => apply_and_rescan(settings.data, r));
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};
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// Cancel the edits for keys that match pattern
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function cancel(regex) {
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console.log('CANCELLING');
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function cancel(keys) {
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for (const key of Object.keys(settings.edits)) {
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if (regex.test(key)) delete settings.edits[key];
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if (keys.includes(key)) delete settings.edits[key];
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}
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rescan();
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};
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function scan_save(el, pattern) {
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try {
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const re = new RegExp(pattern);
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el.disabled = !edited(re);
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if (!el.bound) el.addEventListener("click", ev => save(re)), el.bound = true;
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} catch (err) {
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console.error('Invalid regex', pattern, 'for data-save');
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}
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function scan_save(el, keys) {
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el.disabled = !edited(keys);
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if (!el.bound) el.addEventListener("click", ev => save(keys)), el.bound = true;
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};
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function scan_cancel(el, pattern) {
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try {
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const re = new RegExp(pattern);
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if (!el.bound) el.addEventListener("click", ev => cancel(re)), el.bound = true;
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el.disabled = !edited(re);
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} catch (err) {
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console.error('Invalid regex', pattern, 'for data-save');
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}
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function scan_cancel(el, keys) {
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if (!el.bound) el.addEventListener("click", ev => cancel(keys)), el.bound = true;
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el.disabled = !edited(keys);
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};
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function createSubstitutions() {
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substitutions.nodes = [], substitutions.attributes = [], substitutions.bound = [];
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document.querySelectorAll("*").forEach(function (el) {
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if (el.tagName === "SCRIPT" || el.tagName === "STYLE") return;
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for (const node of el.childNodes) {
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if (node.nodeType === Node.TEXT_NODE && node.nodeValue.includes('${')) {
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node.originalValue = node.nodeValue;
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substitutions.nodes.push(node);
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}
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}
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for (const attr of el.attributes) {
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if (attr.value.includes('${')) {
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attr.originalValue = attr.value;
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substitutions.attributes.push(attr);
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}
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}
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for (const [key, val] of Object.entries(el.dataset)) {
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if (['bind', 'save', 'cancel'].includes(key)) substitutions.bound.push(el);
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}
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});
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// console.log(substitutions);
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};
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function substituteExpressions(text, context) {
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const expected = { string: 1, number: 1, boolean: 1 };
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const f = (orig, expr) => {
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const res = safeEval(expr, context);
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return (typeof res) in expected ? res : orig;
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};
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return typeof text == "string" ? text.replace(/\${(.+?)}/g, f) : text;
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}
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function realrescan() {
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const context = {...settings.data, ...settings.edits};
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//console.log('rescanning..', context);
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document.querySelectorAll("*").forEach((el) => {
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if (el.tagName === "SCRIPT" || el.tagName === "STYLE") return;
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const context = JSON.parse(JSON.stringify(settings.data));
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apply(context, settings.edits);
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if (!substitutions.nodes) createSubstitutions();
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substitutions.attributes.forEach(attr => {
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const v = substituteExpressions(attr.originalValue, context);
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if (v !== attr.value) attr.value = v;
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});
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substitutions.nodes.forEach(node => {
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const v = substituteExpressions(node.originalValue, context);
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if (v !== node.nodeValue) node.nodeValue = v;
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});
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substitutions.bound.forEach(el => {
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for (const [key, val] of Object.entries(el.dataset)) {
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if (key == 'bind') scan_bind(el, val, context);
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if (key == 'save') scan_save(el, val);
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if (key == 'cancel') scan_cancel(el, val);
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if (key == 'save') scan_save(el, val.split(/\s*,\s*/));
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if (key == 'cancel') scan_cancel(el, val.split(/\s*,\s*/));
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}
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});
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};
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