/// <summary><inheritDoc/></summary> public virtual bool IsValid(String objectString) { if (objectString == null) { return(false); } if (CommonCssConstants.INITIAL.Equals(objectString) || CommonCssConstants.INHERIT.Equals(objectString) || CommonCssConstants.UNSET.Equals(objectString)) { return(true); } if (CommonCssConstants.NORMAL.Equals(objectString)) { return(this.allowedNormal); } if (!CssUtils.IsValidNumericValue(objectString)) { return(false); } if (CssUtils.IsPercentageValue(objectString)) { return(this.allowedPercent); } return(true); }