forgejo/web_src/js/modules/fomantic/transition.js

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import $ from 'jquery';
export function initFomanticTransition() {
const transitionNopBehaviors = new Set([
'clear queue', 'stop', 'stop all', 'destroy',
'force repaint', 'repaint', 'reset',
'looping', 'remove looping', 'disable', 'enable',
'set duration', 'save conditions', 'restore conditions',
]);
// stand-in for removed transition module
$.fn.transition = function (arg0, arg1, arg2) {
if (arg0 === 'is supported') return true;
if (arg0 === 'is animating') return false;
if (arg0 === 'is inward') return false;
if (arg0 === 'is outward') return false;
let argObj;
if (typeof arg0 === 'string') {
// many behaviors are no-op now. https://fomantic-ui.com/modules/transition.html#/usage
if (transitionNopBehaviors.has(arg0)) return this;
// now, the arg0 is an animation name, the syntax: (animation, duration, complete)
argObj = {animation: arg0, ...(arg1 && {duration: arg1}), ...(arg2 && {onComplete: arg2})};
} else if (typeof arg0 === 'object') {
argObj = arg0;
} else {
throw new Error(`invalid argument: ${arg0}`);
}
const isAnimationIn = argObj.animation?.startsWith('show') || argObj.animation?.endsWith(' in');
const isAnimationOut = argObj.animation?.startsWith('hide') || argObj.animation?.endsWith(' out');
this.each((_, el) => {
let toShow = isAnimationIn;
if (!isAnimationIn && !isAnimationOut) {
// If the animation is not in/out, then it must be a toggle animation.
// Fomantic uses computed styles to check "visibility", but to avoid unnecessary arguments, here it only checks the class.
toShow = this.hasClass('hidden'); // maybe it could also check "!this.hasClass('visible')", leave it to the future until there is a real problem.
}
argObj.onStart?.call(el);
if (toShow) {
el.classList.remove('hidden');
el.classList.add('visible', 'transition');
if (argObj.displayType) el.style.setProperty('display', argObj.displayType, 'important');
argObj.onShow?.call(el);
} else {
el.classList.add('hidden');
el.classList.remove('visible'); // don't remove the transition class because the Fomantic animation style is `.hidden.transition`.
el.style.removeProperty('display');
argObj.onHidden?.call(el);
}
argObj.onComplete?.call(el);
});
return this;
};
}