Method setClass

packages/blockly/core/field_label.ts:144–154

* Set the CSS class applied to the field's textElement_. * * @param cssClass The new CSS class name, or null to remove.

(cssClass: string | null)

   * @param cssClass The new CSS class name, or null to remove.
   */
  setClass(cssClass: string | null) {
    if (this.textElement_) {
      if (this.class) {
        dom.removeClass(this.textElement_, this.class);
      }
      if (cssClass) {
        dom.addClass(this.textElement_, cssClass);
      }
    }
    this.class = cssClass;
  }

  /**
   * Construct a FieldLabel from a JSON arg object,