preact-arco-design/es/_util/dom.js

Arco Design React UI Library.

import { NOOP } from "./constant";
export var isServerRendering = function () {
  try {
    return !(typeof window !== 'undefined' && document !== undefined);
  } catch (e) {
    return true;
  }
}();
export var on = function () {
  if (isServerRendering) {
    return NOOP;
  }

  return function (element, event, handler, options) {
    element && element.addEventListener(event, handler, options || false);
  };
}();
export var off = function () {
  if (isServerRendering) {
    return NOOP;
  }

  return function (element, event, handler, options) {
    element && element.removeEventListener(event, handler, options || false);
  };
}();
export var contains = function contains(root, ele) {
  var node = ele;

  while (node) {
    if (node === root) {
      return true;
    }

    node = node.parentNode;
  }

  return false;
};
export var isScrollElement = function isScrollElement(element) {
  return element.scrollHeight > element.offsetHeight || element.scrollWidth > element.offsetWidth;
};
/**
 * 从当前节点向上查找所有的滚动元素
 * @param container 当前节点
 * @param top 查找到 top 节点就终止，不再继续查找
 * @returns
 */

export var getScrollElements = function getScrollElements(container, top) {
  if (top === void 0) {
    top = document.documentElement;
  }

  var scrollElements = [];
  var element = container;

  while (element && element !== top) {
    if (isScrollElement(element)) {
      scrollElements.push(element);
    }

    element = element.parentElement;
  }

  return scrollElements;
};