API Reference > imodeljs-frontend > QuantityFormatting QuantityFormatting Classes for formatting and parsing quantity values. Classes Name Description BaseUnitFormattingSettingsProvider This abstract class reacts to changes in the "active" iModel and updates the QuantityFormatter overrides and active Beta LocalUnitFormatProvider Implementation of BaseUnitFormattingSettingsProvider that stores and retrieves data in local storage. Beta QuantityFormatter Class that supports formatting quantity values into strings and parsing strings into quantity values. Beta Enumerations Name Description QuantityType Defines standard format types for tools that need to display measurements to user. Beta Global Functions Name Description getQuantityTypeKey Function to return a QuantityTypeKey given either a QuantityType or a string Beta isCheckboxFormatPropEditorSpec CheckboxFormatPropEditorSpec type guard. Beta isCustomQuantityTypeDefinition CustomQuantityTypeDefinition type guard. Beta isTextInputFormatPropEditorSpec TextInputFormatPropEditorSpec type guard. Beta isTextSelectFormatPropEditorSpec TextSelectFormatPropEditorSpec type guard. Beta Interfaces Name Description CheckboxFormatPropEditorSpec CheckboxFormatPropEditorSpec defines getter and setter method for a boolean property editor. Beta CustomFormatPropEditorSpec Properties that define an EditorSpec for editing a custom formatting property that is stored in the "custom" property in the FormatProps. Beta CustomQuantityTypeDefinition CustomQuantityTypeDefinition interface is used to define a Custom quantity type that can be registered with the QuantityFormatter. Beta FormatterParserSpecsProvider Interface that defines the functions required to be implemented to provide custom formatting and parsing of a custom quantity type. Beta FormattingUnitSystemChangedArgs Arguments sent to FormattingUnitSystemChanged event listeners. Beta OverrideFormatEntry Override format entries can define formats for any of the different unit systems. Beta QuantityFormatOverridesChangedArgs Arguments sent to UnitFormattingSettingsProvider when overrides are changed. Beta QuantityFormatsChangedArgs Arguments sent to QuantityFormatsChanged event listeners. Beta QuantityTypeDefinition Definition of a standard QuantityType that is registered with the QuantityFormatter. Beta TextInputFormatPropEditorSpec TextInputFormatPropEditorSpec defines getter and setter method for a text input property editor. Beta TextSelectFormatPropEditorSpec TextSelectFormatPropEditorSpec defines getter and setter method for a Select/Dropdown property editor. Beta UnitFormattingSettingsProvider The UnitFormattingSettingsProvider interface is used to store and retrieve override FormatProps and Presentation Unit System for use by the QuantityFormatter. Beta Type Aliases Name Description QuantityTypeArg Type the can be used to uniquely identify a Quantity Type. Beta QuantityTypeKey String used to uniquely identify a QuantityType in the quantity registry. Beta UnitSystemKey Used to uniquely identify a unit system. Beta Last Updated: 29 November, 2022