acud/lib/_util/scrollTo.js

acg react 组件库

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
var _typeof = require("@babel/runtime/helpers/typeof");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = scrollTo;
var _raf = _interopRequireDefault(require("rc-util/lib/raf"));
var _getScroll = _interopRequireWildcard(require("./getScroll"));
var _easings = require("./easings");
function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function _interopRequireWildcard(e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, "default": e }; if (null === e || "object" != _typeof(e) && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (var _t in e) "default" !== _t && {}.hasOwnProperty.call(e, _t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, _t)) && (i.get || i.set) ? o(f, _t, i) : f[_t] = e[_t]); return f; })(e, t); }
function scrollTo(y) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  var _options$getContainer = options.getContainer,
    getContainer = _options$getContainer === void 0 ? function () {
      return window;
    } : _options$getContainer,
    callback = options.callback,
    _options$duration = options.duration,
    duration = _options$duration === void 0 ? 450 : _options$duration;
  var container = getContainer();
  var scrollTop = (0, _getScroll["default"])(container, true);
  var startTime = Date.now();
  var _frameFunc = function frameFunc() {
    var timestamp = Date.now();
    var time = timestamp - startTime;
    var nextScrollTop = (0, _easings.easeInOutCubic)(time > duration ? duration : time, scrollTop, y, duration);
    if ((0, _getScroll.isWindow)(container)) {
      container.scrollTo(window.pageXOffset, nextScrollTop);
    } else if (container instanceof HTMLDocument || container.constructor.name === 'HTMLDocument') {
      container.documentElement.scrollTop = nextScrollTop;
    } else {
      container.scrollTop = nextScrollTop;
    }
    if (time < duration) {
      (0, _raf["default"])(_frameFunc);
    } else if (typeof callback === 'function') {
      callback();
    }
  };
  (0, _raf["default"])(_frameFunc);
}