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gitea/web_src/js/utils/dom.js
wxiaoguang d32af84a10
Refactor hiding-methods, remove jQuery show/hide, remove .hide class, remove inline style=display:none (#22950)
Close #22847

This PR:

* introduce Gitea's own `showElem` and related functions
* remove jQuery show/hide
* remove .hide class
* remove inline style=display:none 

From now on:

do not use:
* "[hidden]" attribute: it's too weak, can not be applied to an element
with "display: flex"
* ".hidden" class: it has been polluted by Fomantic UI in many cases
* inline style="display: none": it's difficult to tweak
* jQuery's show/hide/toggle: it can not show/hide elements with
"display: xxx !important"

only use:
* this ".gt-hidden" class
* showElem/hideElem/toggleElem functions in "utils/dom.js"

cc: @silverwind , this is the all-in-one PR
2023-02-19 12:06:14 +08:00

66 lines
1.8 KiB
JavaScript

function getComputedStyleProperty(el, prop) {
const cs = el ? window.getComputedStyle(el) : null;
return cs ? cs[prop] : null;
}
function isShown(el) {
return getComputedStyleProperty(el, 'display') !== 'none';
}
function assertShown(el, expectShown) {
if (window.config.runModeIsProd) return;
// to help developers to catch display bugs, this assertion can be removed after next release cycle or if it has been proved that there is no bug.
if (expectShown && !isShown(el)) {
throw new Error('element is hidden but should be shown');
} else if (!expectShown && isShown(el)) {
throw new Error('element is shown but should be hidden');
}
}
function elementsCall(el, func, ...args) {
if (el instanceof String) {
el = document.querySelectorAll(el);
}
if (el instanceof Node) {
func(el, ...args);
} else if (el.length !== undefined) {
// this works for: NodeList, HTMLCollection, Array, jQuery
for (const e of el) {
func(e, ...args);
}
} else {
throw new Error('invalid argument to be shown/hidden');
}
}
function toggleShown(el, force) {
if (force === true) {
el.classList.remove('gt-hidden');
assertShown(el, true);
} else if (force === false) {
el.classList.add('gt-hidden');
assertShown(el, false);
} else if (force === undefined) {
const wasShown = window.config.runModeIsProd ? undefined : isShown(el);
el.classList.toggle('gt-hidden');
if (wasShown !== undefined) {
assertShown(el, !wasShown);
}
} else {
throw new Error('invalid force argument');
}
}
export function showElem(el) {
elementsCall(el, toggleShown, true);
}
export function hideElem(el) {
elementsCall(el, toggleShown, false);
}
export function toggleElem(el, force) {
elementsCall(el, toggleShown, force);
}