element-plus
Version:
A Component Library for Vue 3
32 lines (31 loc) • 1.06 kB
JavaScript
import ResizeObserver from 'resize-observer-polyfill';
import isServer from './isServer';
const resizeHandler = function (entries) {
for (const entry of entries) {
const listeners = entry.target.__resizeListeners__ || [];
if (listeners.length) {
listeners.forEach((fn) => {
fn();
});
}
}
};
export const addResizeListener = function (element, fn) {
if (isServer || !element)
return;
if (!element.__resizeListeners__) {
element.__resizeListeners__ = [];
element.__ro__ = new ResizeObserver(resizeHandler);
element.__ro__.observe(element);
}
element.__resizeListeners__.push(fn);
};
export const removeResizeListener = function (element, fn) {
var _a;
if (!element || !element.__resizeListeners__)
return;
element.__resizeListeners__.splice(element.__resizeListeners__.indexOf(fn), 1);
if (!element.__resizeListeners__.length) {
(_a = element.__ro__) === null || _a === void 0 ? void 0 : _a.disconnect();
}
};