tav-ui/lib/packages/utils/event/index2.js

Tav UI

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var ResizeObserver = require('resize-observer-polyfill');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

var ResizeObserver__default = /*#__PURE__*/_interopDefaultLegacy(ResizeObserver);

const isServer = typeof window === "undefined";
function resizeHandler(entries) {
  for (const entry of entries) {
    const listeners = entry.target.__resizeListeners__ || [];
    if (listeners.length) {
      listeners.forEach((fn) => {
        fn();
      });
    }
  }
}
function addResizeListener(element, fn) {
  if (isServer)
    return;
  if (!element.__resizeListeners__) {
    element.__resizeListeners__ = [];
    element.__ro__ = new ResizeObserver__default["default"](resizeHandler);
    element.__ro__.observe(element);
  }
  element.__resizeListeners__.push(fn);
}
function removeResizeListener(element, fn) {
  if (!element || !element.__resizeListeners__)
    return;
  element.__resizeListeners__.splice(element.__resizeListeners__.indexOf(fn), 1);
  if (!element.__resizeListeners__.length)
    element.__ro__.disconnect();
}
function triggerWindowResize() {
  const event = document.createEvent("HTMLEvents");
  event.initEvent("resize", true, true);
  event.eventType = "message";
  window.dispatchEvent(event);
}

exports.addResizeListener = addResizeListener;
exports.removeResizeListener = removeResizeListener;
exports.triggerWindowResize = triggerWindowResize;
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