vaadin-grid-helpers.html

<!--
@license
Copyright (c) 2017 Vaadin Ltd.
This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
-->

<script>
  window.Vaadin = window.Vaadin || {};
  /** @private */
  Vaadin.GridHelper = class VaadinGridHelper {

    /**
      * @param {Array<Object>} columns array of columns to be modified
      * @param {number} scope multiplier added to base order for each column
      * @param {number} baseOrder base number used for order
      */
    static _updateColumnOrders(columns, scope, baseOrder) {
      let c = 1;
      columns.forEach((column) => {
        // avoid multiples of 10 because they introduce and extra zero and
        // causes the underlying calculations for child order goes wrong
        if (c % 10 === 0) {
          c++;
        }
        column._order = baseOrder + c * scope;
        c++;
      });
    }
  };

</script>