code: function($input, address) {
          var columnName = address.columnName;
          var component = this.columnModel.getColumnModel(columnName).component;
          var editType = this.columnModel.getEditType(columnName);
          var options;
  
          if (editType === 'text' && component && component.name === 'datePicker') {
              options = component.options || {};
  
              this.$focusedInput = $input;
  
              this.$el.css(this._calculatePosition($input)).show();
              this._resetDatePicker(options, $input, columnName);
              this.datePickerMap[columnName].open();
          }
      }
docs: Event handler for 'focusIn' event of module:painter/input/text
  @param {jQuery} $input - target input element
  @param {{rowKey: String, columnName: String}} address - target cell address
  @private