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Fix dynamic content loading init problem #33748
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| import {isDocumentFragmentOrElementNode} from '../utils/dom.ts'; | ||
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| type DirElement = HTMLInputElement | HTMLTextAreaElement; | ||
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| // for performance considerations, it only uses performant syntax | ||
| function attachDirAuto(el: Partial<DirElement>) { | ||
| if (el.type !== 'hidden' && | ||
| el.type !== 'checkbox' && | ||
| el.type !== 'radio' && | ||
| el.type !== 'range' && | ||
| el.type !== 'color') { | ||
| el.dir = 'auto'; | ||
| } | ||
| } | ||
|
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| type GlobalInitFunc<T extends HTMLElement> = (el: T) => void | Promise<void>; | ||
| const globalInitFuncs: Record<string, GlobalInitFunc<HTMLElement>> = {}; | ||
| function attachGlobalInit(el: HTMLElement) { | ||
| const initFunc = el.getAttribute('data-global-init'); | ||
| const func = globalInitFuncs[initFunc]; | ||
| if (!func) throw new Error(`Global init function "${initFunc}" not found`); | ||
| func(el); | ||
| } | ||
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| type GlobalEventFunc<T extends HTMLElement, E extends Event> = (el: T, e: E) => (void | Promise<void>); | ||
| const globalEventFuncs: Record<string, GlobalEventFunc<HTMLElement, Event>> = {}; | ||
| export function registerGlobalEventFunc<T extends HTMLElement, E extends Event>(event: string, name: string, func: GlobalEventFunc<T, E>) { | ||
| globalEventFuncs[`${event}:${name}`] = func as any; | ||
| } | ||
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| type SelectorHandler = { | ||
| selector: string, | ||
| handler: (el: HTMLElement) => void, | ||
| }; | ||
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| const selectorHandlers: SelectorHandler[] = [ | ||
| {selector: 'input, textarea', handler: attachDirAuto}, | ||
| {selector: '[data-global-init]', handler: attachGlobalInit}, | ||
| ]; | ||
|
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| export function observeAddedElement(selector: string, handler: (el: HTMLElement) => void) { | ||
| selectorHandlers.push({selector, handler}); | ||
| const docNodes = document.querySelectorAll<HTMLElement>(selector); | ||
| for (const el of docNodes) { | ||
| handler(el); | ||
| } | ||
| } | ||
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| export function initAddedElementObserver(): void { | ||
| const observer = new MutationObserver((mutationList) => { | ||
| const len = mutationList.length; | ||
| for (let i = 0; i < len; i++) { | ||
| const mutation = mutationList[i]; | ||
| const len = mutation.addedNodes.length; | ||
| for (let i = 0; i < len; i++) { | ||
| const addedNode = mutation.addedNodes[i] as HTMLElement; | ||
| if (!isDocumentFragmentOrElementNode(addedNode)) continue; | ||
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| for (const {selector, handler} of selectorHandlers) { | ||
| if (addedNode.matches(selector)) { | ||
| handler(addedNode); | ||
| } | ||
| const children = addedNode.querySelectorAll<HTMLElement>(selector); | ||
| for (const el of children) { | ||
| handler(el); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| }); | ||
|
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||
| for (const {selector, handler} of selectorHandlers) { | ||
| const docNodes = document.querySelectorAll<HTMLElement>(selector); | ||
| for (const el of docNodes) { | ||
| handler(el); | ||
| } | ||
| } | ||
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| observer.observe(document, {subtree: true, childList: true}); | ||
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| document.addEventListener('click', (e) => { | ||
| const elem = (e.target as HTMLElement).closest<HTMLElement>('[data-global-click]'); | ||
| if (!elem) return; | ||
| const funcName = elem.getAttribute('data-global-click'); | ||
| const func = globalEventFuncs[`click:${funcName}`]; | ||
| if (!func) throw new Error(`Global event function "click:${funcName}" not found`); | ||
| func(elem, e); | ||
| }); | ||
| } | ||
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Ah, that's supposed to be
direction, notdirectory.I was confused for a second.
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That's from old "dirauto.js"
This file is a rewritten of "dirauto.js",
more thanabout a half of code is from old code.