react-widgets/lib/mixins/PopupScrollToMixin.js

An à la carte set of polished, extensible, and accessible inputs built for React

'use strict';

var babelHelpers = require('../util/babelHelpers.js');

exports.__esModule = true;

var _domHelpersUtilScrollTo = require('dom-helpers/util/scrollTo');

var _domHelpersUtilScrollTo2 = babelHelpers.interopRequireDefault(_domHelpersUtilScrollTo);

exports['default'] = {

  _scrollTo: function _scrollTo(selected, list, focused) {
    var state = this._scrollState || (this._scrollState = {}),
        handler = this.props.onMove,
        lastVisible = state.visible,
        lastItem = state.focused,
        shown,
        changed;

    state.visible = !(!list.offsetWidth || !list.offsetHeight);
    state.focused = focused;

    changed = lastItem !== focused;
    shown = state.visible && !lastVisible;

    if (shown || state.visible && changed) {
      if (handler) handler(selected, list, focused);else {
        state.scrollCancel && state.scrollCancel();
        state.scrollCancel = _domHelpersUtilScrollTo2['default'](selected, list);
      }
    }
  }
};
module.exports = exports['default'];