primereact/deferredcontent/deferredcontent.cjs.js

PrimeReact is an open source UI library for React featuring a rich set of 90+ components, a theme designer, various theme alternatives such as Material, Bootstrap, Tailwind, premium templates and professional support. In addition, it integrates with Prime

'use client';
'use strict';

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

var React = require('react');
var api = require('primereact/api');
var hooks = require('primereact/hooks');
var componentbase = require('primereact/componentbase');

function _interopNamespace(e) {
  if (e && e.__esModule) return e;
  var n = Object.create(null);
  if (e) {
    Object.keys(e).forEach(function (k) {
      if (k !== 'default') {
        var d = Object.getOwnPropertyDescriptor(e, k);
        Object.defineProperty(n, k, d.get ? d : {
          enumerable: true,
          get: function () { return e[k]; }
        });
      }
    });
  }
  n["default"] = e;
  return Object.freeze(n);
}

var React__namespace = /*#__PURE__*/_interopNamespace(React);

function _arrayWithHoles(r) {
  if (Array.isArray(r)) return r;
}

function _iterableToArrayLimit(r, l) {
  var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
  if (null != t) {
    var e,
      n,
      i,
      u,
      a = [],
      f = !0,
      o = !1;
    try {
      if (i = (t = t.call(r)).next, 0 === l) {
        if (Object(t) !== t) return;
        f = !1;
      } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0);
    } catch (r) {
      o = !0, n = r;
    } finally {
      try {
        if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return;
      } finally {
        if (o) throw n;
      }
    }
    return a;
  }
}

function _arrayLikeToArray(r, a) {
  (null == a || a > r.length) && (a = r.length);
  for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e];
  return n;
}

function _unsupportedIterableToArray(r, a) {
  if (r) {
    if ("string" == typeof r) return _arrayLikeToArray(r, a);
    var t = {}.toString.call(r).slice(8, -1);
    return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
  }
}

function _nonIterableRest() {
  throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}

function _slicedToArray(r, e) {
  return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest();
}

var DeferredContentBase = componentbase.ComponentBase.extend({
  defaultProps: {
    __TYPE: 'DeferredContent',
    onload: null,
    children: undefined
  }
});

var DeferredContent = /*#__PURE__*/React__namespace.forwardRef(function (inProps, ref) {
  var mergeProps = hooks.useMergeProps();
  var context = React__namespace.useContext(api.PrimeReactContext);
  var props = DeferredContentBase.getProps(inProps, context);
  var _React$useState = React__namespace.useState(false),
    _React$useState2 = _slicedToArray(_React$useState, 2),
    loadedState = _React$useState2[0],
    setLoadedState = _React$useState2[1];
  var elementRef = React__namespace.useRef(null);
  var _useEventListener = hooks.useEventListener({
      target: 'window',
      type: 'scroll',
      listener: function listener() {
        if (shouldLoad()) {
          load();
          unbindScrollListener();
        }
      }
    }),
    _useEventListener2 = _slicedToArray(_useEventListener, 2),
    bindScrollListener = _useEventListener2[0],
    unbindScrollListener = _useEventListener2[1];
  var _DeferredContentBase$ = DeferredContentBase.setMetaData({
      props: props,
      state: {
        loaded: loadedState
      }
    }),
    ptm = _DeferredContentBase$.ptm;
  var shouldLoad = function shouldLoad() {
    if (loadedState) {
      return false;
    }
    var rect = elementRef.current.getBoundingClientRect();
    var winHeight = document.documentElement.clientHeight;
    return winHeight >= rect.top;
  };
  var load = function load(event) {
    setLoadedState(true);
    props.onLoad && props.onLoad(event);
  };
  React__namespace.useImperativeHandle(ref, function () {
    return {
      props: props,
      getElement: function getElement() {
        return elementRef.current;
      }
    };
  });
  hooks.useMountEffect(function () {
    if (!loadedState) {
      shouldLoad() ? load() : bindScrollListener();
    }
  });
  var rootProps = mergeProps({
    ref: elementRef
  }, DeferredContentBase.getOtherProps(props), ptm('root'));
  return /*#__PURE__*/React__namespace.createElement("div", rootProps, loadedState && props.children);
});
DeferredContent.displayName = 'DeferredContent';

exports.DeferredContent = DeferredContent;