@sberdevices/plasma-temple/dist/utils/scroll.js

SberDevices CanvasApp Templates.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.scroll = scroll;

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function scroll(_ref) {
  var element = _ref.element,
      offset = _ref.offset,
      _ref$startPosition = _ref.startPosition,
      startPosition = _ref$startPosition === void 0 ? 0 : _ref$startPosition,
      _ref$duration = _ref.duration,
      duration = _ref$duration === void 0 ? 400 : _ref$duration,
      _ref$axis = _ref.axis,
      axis = _ref$axis === void 0 ? 'x' : _ref$axis;
  var start = 0;
  var scrollStart = startPosition;
  var direction = {
    x: 'left',
    y: 'top'
  }[axis];
  requestAnimationFrame(function animate(timestamp) {
    if (start === 0) {
      start = timestamp;
    }

    var timeFraction = (timestamp - start) / duration;

    if (timeFraction > 1) {
      timeFraction = 1;
    }

    var diff = Math.ceil(offset * timeFraction);
    element.scrollTo(_defineProperty({}, direction, scrollStart + diff));

    if (timeFraction < 1) {
      requestAnimationFrame(animate);
    }
  });
}
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