diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/eval.ts | 58 | ||||
| -rw-r--r-- | src/index.ts | 32 |
2 files changed, 69 insertions, 21 deletions
diff --git a/src/eval.ts b/src/eval.ts index 76eaa21..03391c2 100644 --- a/src/eval.ts +++ b/src/eval.ts @@ -1,46 +1,67 @@ import { Expr } from "./parser"; import { match, matchString } from "./utils/adt"; -export type Dependencies = { +export type EvalActions = { addClass(id: string, classes: string): Promise<void> removeClass(id: string, classes: string): Promise<void> delay(num: number): Promise<void> jsEval(js: string): Promise<any> - // loadCssx(id: string, url: string): Promise<string> - // getVarable(name: string, def?: string): Promise<string> - // updateVariable(id: string, varName: string, value: string): Promise<void> + loadCssx(id: string, url: string): Promise<string> + getVariable(name: string): Promise<string | undefined> + updateVariable(id: string, varName: string, value: string): Promise<void> // calculate ?? } -export const evalExpr = async (expr: Expr, deps: Dependencies): Promise<string | undefined> => - match<Promise<string | undefined>, Expr>(expr, { +type EvalValue = string | undefined | void + +export const evalExpr = async (expr: Expr, actions: EvalActions): Promise<EvalValue> => + match<Promise<EvalValue>, Expr>(expr, { Call: async ({ name, args }) => { - await matchString(name, { + return matchString<Promise<EvalValue>, string>(name, { 'add-class': async () => { - const id = await evalExpr(args[0], deps) - const classes = await evalExpr(args[1], deps) + const id = await evalExpr(args[0], actions) + const classes = await evalExpr(args[1], actions) if (id && classes) { - await deps.addClass(id, classes) + await actions.addClass(id, classes) } }, 'remove-class': async () => { - const id = await evalExpr(args[0], deps) - const classes = await evalExpr(args[1], deps) + const id = await evalExpr(args[0], actions) + const classes = await evalExpr(args[1], actions) if (id && classes) { - await deps.removeClass(id, classes) + await actions.removeClass(id, classes) } }, 'delay': async () => { - const num = await evalExpr(args[0], deps) - num && await deps.delay(parseInt(num, 10)) + const num = await evalExpr(args[0], actions) + num && await actions.delay(parseInt(num, 10)) }, 'js-eval': async () => { - const js = await evalExpr(args[0], deps) - js && await deps.jsEval(js) + const js = await evalExpr(args[0], actions) + js && await actions.jsEval(js) + }, + 'load-cssx': async () => { + const id = await evalExpr(args[0], actions) + const url = await evalExpr(args[1], actions) + if (id && url) { + await actions.loadCssx(id, url) + } + }, + 'var': async () => { + const varName = await evalExpr(args[0], actions) + const defaultValue = await evalExpr(args[1], actions) + return varName && (actions.getVariable(varName) ?? defaultValue) + }, + 'update': async () => { + const id = await evalExpr(args[0], actions) + const varName = await evalExpr(args[1], actions) + const value = await evalExpr(args[2], actions) + if (id && varName && value) { + actions.updateVariable(id, varName, value) + } }, _: () => Promise.reject(new Error('not supposed to be here')), }) - return undefined }, LiteralString: async s => s, Identifier: async s => s, @@ -48,3 +69,4 @@ export const evalExpr = async (expr: Expr, deps: Dependencies): Promise<string | _: async _ => undefined, }) + diff --git a/src/index.ts b/src/index.ts index 4987e65..9e9443c 100644 --- a/src/index.ts +++ b/src/index.ts @@ -1,4 +1,4 @@ -import { Dependencies, evalExpr } from './eval' +import { EvalActions, evalExpr } from './eval' import { parse } from './parser' const UNSET_PROPERTY_VALUE = '<unset>' @@ -33,12 +33,37 @@ const getChildrenIds = ($element: Element) => { return value.split(/(\s*,\s*)|\s+/g).filter(Boolean) } -const evalDeps = (_el: Element): Dependencies => ({ +const getEvalActions = ($element: Element): EvalActions => ({ addClass: async (id, cls) => document.getElementById(id)?.classList.add(cls), removeClass: async (id, cls) => document.getElementById(id)?.classList.remove(cls), delay: (delay) => new Promise((res) => setTimeout(res, delay)), jsEval: async (js) => (0, eval)(js), + loadCssx: async (id, url) => new Promise((resolve, reject) => { + const $link = Object.assign(document.createElement('link'), { + href: url, + rel: 'stylesheet', + }) + $link.onload = () => { + const $el = document.getElementById(id); + // NOTE: Maybe create and append to body if no root? + if ($el) { + manageElement($el) + resolve(id) + } else { + console.error(`[CSSX] Unable to find root for ${id}`) + reject(`[CSSX] Unable to find root for ${id}`) + } + } + document.body.appendChild($link); + }), + getVariable: async varName => getPropertyValue($element, varName), + updateVariable: async (targetId, varName, value) => { + const $el = document.getElementById(targetId) + if ($el) { + $el.style.setProperty(varName, JSON.stringify(value)) + } + }, }) const handleEvents = async ($element: Element) => { @@ -50,7 +75,7 @@ const handleEvents = async ($element: Element) => { console.log(`Triggered event: ${event}`) const exprs = parse(handlerExpr) for (const expr of exprs) { - await evalExpr(expr, evalDeps($element)) + await evalExpr(expr, getEvalActions($element)) } } } @@ -73,6 +98,7 @@ const manageElement = async ($element: Element) => { $element.appendChild($childrenRoot) for (const id of childrenIds) { + // TODO: Allow adding node types other than div const $child = $childrenRoot.querySelector(`:scope > #${id}`) ?? Object.assign(document.createElement('div'), { id }) |