@quantlab/handsontable/es/plugins/contextMenu/predefinedItems/columnLeft.js

Spreadsheet-like data grid editor that provides copy/paste functionality compatible with Excel/Google Docs

import { getValidSelection } from './../utils';

export var KEY = 'col_left';

export default function columnLeftItem() {
  return {
    key: KEY,
    name: 'Insert column on the left',
    callback: function callback(key, selection) {
      this.alter('insert_col', selection.start.col, 1, 'ContextMenu.columnLeft');
    },
    disabled: function disabled() {
      var selected = getValidSelection(this);

      if (!selected) {
        return true;
      }
      if (!this.isColumnModificationAllowed()) {
        return true;
      }
      var entireRowSelection = [selected[0], 0, selected[0], this.countCols() - 1];
      var rowSelected = entireRowSelection.join(',') == selected.join(',');
      var onlyOneColumn = this.countCols() === 1;

      return selected[1] < 0 || this.countCols() >= this.getSettings().maxCols || !onlyOneColumn && rowSelected;
    },
    hidden: function hidden() {
      return !this.getSettings().allowInsertColumn;
    }
  };
}