ptcs-radio¶

Visual¶

A radio button consists of a button and a text label.

You can assign a maximum width to the radio button label to display it across multiple lines.

Overview¶

A radio button can be in an on or an off state. When the radio button is checked, it is set to on. Multiple radio buttons can belong to the same group. Only one button in the group can be in an on state.

A radio button can be in a selected and/or a disabled state. A disabled button does not respond to UI events.

A radio button has a radiogroup association to support the group notion. When checked (selected), the radio button remains in that on state until another radio button in the same radiogroup is checked. The radio button cannot be deselected like toggle buttons.

Usage Examples¶

Basic Usage¶

<ptcs-radio radiogroup="groupname" label="This is the label string"></ptcs-radio>

Start in on state (checked)¶

<ptcs-radio radiogroup="mammal" label="Dog" checked></ptcs-radio>

NOTE: By default, the first radio button of a radiogroup is checked. In the web component, this happens in the demo HTML, and for ptcs-radio that have an empty radiogroup. In the wrapped Radio Button of Composer, this functionality is triggered when the radiogroup is changed. In Mashup Builder, when you initially drag the Radio Button widget, none of them are checked. The first occurrence of a new and non-empty radiogroup definition checks the button.

A group of radio buttons¶

<ptcs-radio radiogroup="animal" label="Cat"></ptcs-radio>
<ptcs-radio radiogroup="animal" label="Dog"></ptcs-radio>
<ptcs-radio radiogroup="animal" label="Parrot"></ptcs-radio>

Radio buttons within the same radiogroup are mutually exclusive. Only one of the buttons in same radiogroup can be in the on state.

A radio button with maximum width label¶

    <ptcs-radio radiogroup="reptile" label="Anaconda. A very long label might be displayed as multiline, and does not get truncated or an ellipsis" label-max-width="150px">

By default, the radio button label is a single line. You can wrap the label text across multiple lines by specifying a maximum width for the label or its inherited width.

Component API¶

Properties¶

Property	Type	Description	Default	Triggers a changed event?
checked	Boolean	The current state (on: checked === true, off: checked === false)	false	No
disabled	Boolean	Disables the component. Users cannot interact with the element.	false	No
label	String	The string for the radio button label	"Radio Button"	No
labelMaxWidth	String	The maximum width (a CSS length) of the radio button label	""	No
preventAutoSelect	Boolean	The radio button normally auto-selects itself when connected to the DOM if no other radio button is selected in the current `radiogroup`. Property `preventAutoSelect` disables this behavior.		No
radiogroup	String	To support mutually exclusive radio buttons in same radiogroup	""	No
tooltip	String	The tooltip that appears when hovering over the radio button	""	No
tooltipIcon	String	The icon for the tooltip	""	No
extraValidation	Function	Custom validation function to complement the component's client-side validation logic. This is invoked with the radio button component itself as parameter, so that it can use any radio button property for custom validation. Can return `true` (= valid), `false` (= invalid), or `undefined` (ignore validation)		No
externalValidity	String	Radio button validity as determined externally (server-side). Value: `undefined`, "unvalidated", "invalid", or "valid"	No
hideValidationCriteria	Boolean	Don't show validation criteria in unvalidated state?		No
hideValidationError	Boolean	Don't show validation error state?		No
hideValidationSuccess	Boolean	Don't show validation success state?		No
required	Boolean	Validation criterion: Must the radio button be checked?	false	No
validationCriteria	String	The validation details message		No
validationCriteriaIcon	String	Icon for criteria state (unvalidated).	"cds:icon_info:"	No
validationErrorIcon	String	Icon for error state (invalid).	"cds:icon_error"	No
validationMessage	String	The validation (title) message		No
validationSuccessDetails	String	The validation success details message		No
validationSuccessIcon	String	Icon for success state (valid).	"cds:icon_success"	No
validationSuccessMessage	String	The validation success (title) message.	"Success"	No

Parts Structure¶

The radio button exposes following parts from its shadow tree for styling purposes.

Part Name	Description
root	The radio button parent element
circle	The radio button
exterior-ring	The exterior ring of the radio button
interior-button	The interior part of the radio button, that is filled when the button is checked
label	The radio button label

Events¶

Name	Data	Description
checked-changed	{checked}	Generated when the state of the radio button changes

Methods¶

No methods

State attributes¶

Attribute	Description	Part
checked	The current state	:host, root
disabled	Indicates whether the radio button is disabled	:host, root
label	The displayed label	:host, label
radiogroup	The associated radio group	:host