mirror of https://github.com/go-gitea/gitea.git
Fix dynamic content loading init problem (#33748)
1. Rewrite `dirauto.ts` to `observer.ts`.
* We have been using MutationObserver for long time, it's proven that it
is quite performant.
* Now we extend its ability to handle more "init" works.
2. Use `observeAddedElement` to init all non-custom "dropdown".
3. Use `data-global-click` to handle click events from dynamically
loaded elements.
* By this new approach, the old fragile selector-based
(`.comment-reaction-button`) mechanism is removed.
4. By the way, remove unused `.diff-box` selector, it was abused and
never really used.
A lot of FIXMEs in "repo-diff.ts" are completely fixed, newly loaded
contents could work as expected.
pull/33752/head^2
wxiaoguang
2 weeks ago
committed by
GitHub
parent
f3ada61097
commit
698ae7aa5b
@ -1,37 +1,31 @@
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import {POST} from '../../modules/fetch.ts';
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import {fomanticQuery} from '../../modules/fomantic/base.ts';
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import type {DOMEvent} from '../../utils/dom.ts';
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import {registerGlobalEventFunc} from '../../modules/observer.ts';
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export function initCompReactionSelector(parent: ParentNode = document) {
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for (const container of parent.querySelectorAll<HTMLElement>('.issue-content, .diff-file-body')) {
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container.addEventListener('click', async (e: DOMEvent<MouseEvent>) => {
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// there are 2 places for the "reaction" buttons, one is the top-right reaction menu, one is the bottom of the comment
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const target = e.target.closest('.comment-reaction-button');
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if (!target) return;
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e.preventDefault();
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export function initCompReactionSelector() {
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registerGlobalEventFunc('click', 'onCommentReactionButtonClick', async (target: HTMLElement, e: DOMEvent<MouseEvent>) => {
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// there are 2 places for the "reaction" buttons, one is the top-right reaction menu, one is the bottom of the comment
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e.preventDefault();
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if (target.classList.contains('disabled')) return;
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if (target.classList.contains('disabled')) return;
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const actionUrl = target.closest('[data-action-url]').getAttribute('data-action-url');
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const reactionContent = target.getAttribute('data-reaction-content');
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const actionUrl = target.closest('[data-action-url]').getAttribute('data-action-url');
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const reactionContent = target.getAttribute('data-reaction-content');
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const commentContainer = target.closest('.comment-container');
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const commentContainer = target.closest('.comment-container');
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const bottomReactions = commentContainer.querySelector('.bottom-reactions'); // may not exist if there is no reaction
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const bottomReactionBtn = bottomReactions?.querySelector(`a[data-reaction-content="${CSS.escape(reactionContent)}"]`);
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const hasReacted = bottomReactionBtn?.getAttribute('data-has-reacted') === 'true';
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const bottomReactions = commentContainer.querySelector('.bottom-reactions'); // may not exist if there is no reaction
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const bottomReactionBtn = bottomReactions?.querySelector(`a[data-reaction-content="${CSS.escape(reactionContent)}"]`);
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const hasReacted = bottomReactionBtn?.getAttribute('data-has-reacted') === 'true';
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const res = await POST(`${actionUrl}/${hasReacted ? 'unreact' : 'react'}`, {
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data: new URLSearchParams({content: reactionContent}),
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});
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const data = await res.json();
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bottomReactions?.remove();
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if (data.html) {
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commentContainer.insertAdjacentHTML('beforeend', data.html);
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const bottomReactionsDropdowns = commentContainer.querySelectorAll('.bottom-reactions .dropdown.select-reaction');
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fomanticQuery(bottomReactionsDropdowns).dropdown(); // re-init the dropdown
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}
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const res = await POST(`${actionUrl}/${hasReacted ? 'unreact' : 'react'}`, {
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data: new URLSearchParams({content: reactionContent}),
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});
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}
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const data = await res.json();
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bottomReactions?.remove();
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if (data.html) {
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commentContainer.insertAdjacentHTML('beforeend', data.html);
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}
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});
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}
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@ -1,44 +0,0 @@
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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
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function attachDirAuto(el: DirElement) {
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if (el.type !== 'hidden' &&
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el.type !== 'checkbox' &&
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el.type !== 'radio' &&
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el.type !== 'range' &&
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el.type !== 'color') {
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el.dir = 'auto';
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}
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}
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export function initDirAuto(): void {
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const observer = new MutationObserver((mutationList) => {
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const len = mutationList.length;
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for (let i = 0; i < len; i++) {
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const mutation = mutationList[i];
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const len = mutation.addedNodes.length;
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for (let i = 0; i < len; i++) {
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const addedNode = mutation.addedNodes[i] as HTMLElement;
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if (!isDocumentFragmentOrElementNode(addedNode)) continue;
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if (addedNode.nodeName === 'INPUT' || addedNode.nodeName === 'TEXTAREA') {
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attachDirAuto(addedNode as DirElement);
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}
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const children = addedNode.querySelectorAll<DirElement>('input, textarea');
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const len = children.length;
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for (let childIdx = 0; childIdx < len; childIdx++) {
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attachDirAuto(children[childIdx]);
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}
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}
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}
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});
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const docNodes = document.querySelectorAll<DirElement>('input, textarea');
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const len = docNodes.length;
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for (let i = 0; i < len; i++) {
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attachDirAuto(docNodes[i]);
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}
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observer.observe(document, {subtree: true, childList: true});
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}
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@ -0,0 +1,89 @@
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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
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function attachDirAuto(el: Partial<DirElement>) {
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if (el.type !== 'hidden' &&
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el.type !== 'checkbox' &&
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el.type !== 'radio' &&
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el.type !== 'range' &&
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el.type !== 'color') {
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el.dir = 'auto';
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}
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}
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type GlobalInitFunc<T extends HTMLElement> = (el: T) => void | Promise<void>;
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const globalInitFuncs: Record<string, GlobalInitFunc<HTMLElement>> = {};
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function attachGlobalInit(el: HTMLElement) {
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const initFunc = el.getAttribute('data-global-init');
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const func = globalInitFuncs[initFunc];
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if (!func) throw new Error(`Global init function "${initFunc}" not found`);
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func(el);
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}
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type GlobalEventFunc<T extends HTMLElement, E extends Event> = (el: T, e: E) => (void | Promise<void>);
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const globalEventFuncs: Record<string, GlobalEventFunc<HTMLElement, Event>> = {};
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export function registerGlobalEventFunc<T extends HTMLElement, E extends Event>(event: string, name: string, func: GlobalEventFunc<T, E>) {
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globalEventFuncs[`${event}:${name}`] = func as any;
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}
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type SelectorHandler = {
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selector: string,
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handler: (el: HTMLElement) => void,
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};
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const selectorHandlers: SelectorHandler[] = [
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{selector: 'input, textarea', handler: attachDirAuto},
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{selector: '[data-global-init]', handler: attachGlobalInit},
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];
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export function observeAddedElement(selector: string, handler: (el: HTMLElement) => void) {
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selectorHandlers.push({selector, handler});
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const docNodes = document.querySelectorAll<HTMLElement>(selector);
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for (const el of docNodes) {
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handler(el);
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}
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}
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export function initAddedElementObserver(): void {
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const observer = new MutationObserver((mutationList) => {
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const len = mutationList.length;
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for (let i = 0; i < len; i++) {
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const mutation = mutationList[i];
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const len = mutation.addedNodes.length;
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for (let i = 0; i < len; i++) {
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const addedNode = mutation.addedNodes[i] as HTMLElement;
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if (!isDocumentFragmentOrElementNode(addedNode)) continue;
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for (const {selector, handler} of selectorHandlers) {
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if (addedNode.matches(selector)) {
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handler(addedNode);
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}
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const children = addedNode.querySelectorAll<HTMLElement>(selector);
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for (const el of children) {
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handler(el);
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}
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}
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}
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}
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});
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for (const {selector, handler} of selectorHandlers) {
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const docNodes = document.querySelectorAll<HTMLElement>(selector);
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for (const el of docNodes) {
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handler(el);
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}
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}
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observer.observe(document, {subtree: true, childList: true});
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document.addEventListener('click', (e) => {
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const elem = (e.target as HTMLElement).closest<HTMLElement>('[data-global-click]');
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if (!elem) return;
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const funcName = elem.getAttribute('data-global-click');
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const func = globalEventFuncs[`click:${funcName}`];
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if (!func) throw new Error(`Global event function "click:${funcName}" not found`);
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func(elem, e);
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});
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}
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