tdesign-vue/es/hooks/useMutationObservable.js

tdesign-vue

/**
 * tdesign v1.14.1
 * (c) 2025 tdesign
 * @license MIT
 */

import _defineProperty from '@babel/runtime/helpers/defineProperty';
import { ref, watch, onMounted, onBeforeUnmount } from '@vue/composition-api';
import { debounce, isEqual } from 'lodash-es';

function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
var DEFAULT_OPTIONS = {
  debounceTime: 0,
  config: {
    attributes: true,
    childList: true,
    characterData: true,
    subtree: true
  }
};
function useMutationObservable(targetEl, callback) {
  var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : DEFAULT_OPTIONS;
  var mergedOptions = ref(_objectSpread(_objectSpread({}, DEFAULT_OPTIONS), options));
  var observer = null;
  var initObserver = function initObserver() {
    var _observer;
    if (!targetEl) return;
    var _mergedOptions$value = mergedOptions.value,
      _mergedOptions$value$ = _mergedOptions$value.debounceTime,
      debounceTime = _mergedOptions$value$ === void 0 ? 0 : _mergedOptions$value$,
      _mergedOptions$value$2 = _mergedOptions$value.config,
      config = _mergedOptions$value$2 === void 0 ? DEFAULT_OPTIONS.config : _mergedOptions$value$2;
    var handler = function handler() {
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }
      callback === null || callback === void 0 || callback.apply(void 0, args);
    };
    (_observer = observer) === null || _observer === void 0 || _observer.disconnect();
    observer = new MutationObserver(debounceTime > 0 ? debounce(handler, debounceTime) : handler);
    observer.observe(targetEl, config);
  };
  watch(function () {
    return options;
  }, function (newOptions) {
    if (!isEqual(newOptions, mergedOptions.value)) {
      mergedOptions.value = _objectSpread(_objectSpread({}, DEFAULT_OPTIONS), newOptions);
      initObserver();
    }
  }, {
    deep: true
  });
  onMounted(initObserver);
  onBeforeUnmount(function () {
    var _observer2;
    return (_observer2 = observer) === null || _observer2 === void 0 ? void 0 : _observer2.disconnect();
  });
}

export { useMutationObservable as default, useMutationObservable };
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