Element: <oj-c-checkbox>

CORE PACK

Oracle® JavaScript Extension Toolkit (JET)
16.1.0
F92237-01

Since:
  • 16.0.0
Module:
  • checkbox

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Slots

Attributes

Methods

Type Definitions

Other Topics


JET Checkbox Component

Checkbox is a single standalone checkbox control. It represents a boolean value.

The Checkbox label is placed in the default slot and can be a short string or block of text 


<oj-c-checkbox value="false">
I Agree
</oj-c-checkbox>

Touch End User Information

Target Gesture Action
Checkbox Tap Select/unselect the checkbox
Checkbox's Label Tap Select/unselect the corresponding checkbox

Keyboard End User Information

Target Key Action
Checkbox Tab In Set focus on the checkbox. Disabled checkboxes are not focusable.
Checkbox Space Toggles the checkbox; If the checkbox is unselected, it will select it and vice versa.
Checkbox Tab Focus goes to the next focusable item after the oj-c-checkbox or help icon if present.
Checkbox Shift+Tab Sets focus to the previous focusable item before the oj-c-checkbox.

Accessibility

Text as a label is required in the default slot to associate with the checkbox element


Usage

Signature:

interface CCheckboxElement

Typescript Import Format
//To typecheck the element APIs, import as below.
import { CCheckboxElement } from "oj-c/checkbox";

//For the transpiled javascript to load the element's module, import as below
import "oj-c/checkbox";

For additional information visit:

Note: Application logic should not interact with the component's properties or invoke its methods until the BusyContext indicates that the component is ready for interaction.


Slots

JET components that allow child content support slots. Please see the slots section of the JET component overview doc for more information on allowed slot content and slot types.

Default

The default slot is the content associated with the checkbox. This can be a label or a block of text.

Attributes

column-span :number

Specifies how many columns this component should span. This only takes effect when this component is a child of a form layout that has direction 'row'.
Default Value:
  • 1
Names
Item Name
Property columnSpan
Property change event columnSpanChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-column-span-changed

container-readonly :boolean

Specifies whether an ancestor container, like oj-c-form-layout, is readonly. This affects whether a readonly component renders in full or mixed readonly mode.
Names
Item Name
Property containerReadonly
Property change event containerReadonlyChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-container-readonly-changed

disabled :boolean

Whether the component is disabled. The default is false.

When the disabled property changes due to programmatic intervention, the component may clear messages and run validation in some cases.

  • when a required component is initialized as disabled value="{{currentValue}}" required disabled, deferred validation is skipped.
  • when a disabled component is enabled,
    • if component is invalid and showing messages then all component messages are cleared, and full validation run using the display value.
      • if there are validation errors, they are shown.
      • if no errors result from the validation, the value property is updated. Page authors can listen to the valueChanged event to clear custom errors.
    • if component is valid and has no errors then deferred validation is run.
      • if there is a deferred validation error, then the valid property is updated.
    • if component is invalid and deferred errors then component messages are cleared and deferred validation re-run.
      • if there is a deferred validation error, then the valid property is updated.
  • when enabled component is disabled then no validation is run and the component appears disabled.

Default Value:
  • false
Names
Item Name
Property disabled
Property change event disabledChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-disabled-changed

display-options :{ messages: DisplayOptions['messages']; }

Display options for auxiliary content that describes whether or not it should be displayed.
Names
Item Name
Property displayOptions
Property change event displayOptionsChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-display-options-changed

display-options.messages* :"none"|"display"

Default Value:
  • "display"
Names
Item Name
Property displayOptions.messages

help :oj-c.Checkbox.Help

Form component help information.
Names
Item Name
Property help
Property change event helpChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-help-changed

help-hints :oj-c.Checkbox.HelpHints

The helpHints object contains a definition property, sourceText property, and a source property.
Names
Item Name
Property helpHints
Property change event helpHintsChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-help-hints-changed

messages-custom :Array.<oj-c.Checkbox.ComponentMessageItem>

List of messages an app would add to the component when it has business/custom validation errors that it wants the component to show. This allows the app to perform further validation before sending data to the server. When this option is set the message shows to the user right away. To clear the custom message, set messagesCustom back to an empty array.

See the Validation and Messages section for details on when the component clears messagesCustom; for example, when full validation is run.

Default Value:
  • []
Supports writeback:
  • true
Names
Item Name
Property messagesCustom
Property change event messagesCustomChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-messages-custom-changed

readonly :boolean

Whether the component is readonly. The readonly property sets or returns whether an element is readonly, or not. A readonly element cannot be modified. However, a user can tab to it, highlight it, focus on it, and copy the text from it. If you want to prevent the user from interacting with the element, use the disabled property instead.
Default Value:
  • false
Names
Item Name
Property readonly
Property change event readonlyChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-readonly-changed

required :boolean

This property set to false implies that a value is not required to be provided by the user. This is the default. This property set to true implies that a value is required to be provided by the user.

In the Redwood theme, by default, a Required text is rendered inline when the field is empty.

The Required error text is based on Redwood UX designs, and it is not recommended that it be changed. To override the required error message, use the required-message-detail attribute. The component's label text is passed in as a token {label} and can be used in the message detail.

When required is set to true, an implicit required validator is created, i.e., new RequiredValidator(). The required validator is the only validator to run during initial render, and its error is not shown to the user at this time; this is called deferred validation. The required validator also runs during normal validation; this is when the errors are shown to the user. See the Validation and Messaging section for details.

When the required property changes due to programmatic intervention, the component may clear component messages and run validation, based on the current state it's in.

Running Validation when required property changes

  • if component is valid when required is set to true, then it runs deferred validation on the value property. If the field is empty, the valid state is invalidHidden. No errors are shown to the user.
  • if component is valid when required is set from true to false, then no validation is run.
  • if component is invalid and has deferred messages (invalidHidden) when required is set to false, then component messages are cleared (messages-custom messages are not cleared) but no deferred validation is run because required is false.
  • if component is invalid and currently showing invalid messages (invalidShown) when required is changed to either true or false, then component messages are cleared and normal validation is run using the current display value.
    • if there are validation errors, then value property is not updated and the error is shown.
    • if no errors result from the validation, the value property is updated; page author can listen to the valueChanged event on the component to clear custom errors.

Clearing Messages when required property changes

  • Only messages created by the component, like validation messages, are cleared when the required property changes.
  • messagesCustom property is not cleared.

Default Value:
  • false
Names
Item Name
Property required
Property change event requiredChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-required-changed

required-message-detail :string

The component-specific message detail when the required validation fails. If the component needs a required validation error message that is different from the default, set this property. It should be a translated string.

Names
Item Name
Property requiredMessageDetail
Property change event requiredMessageDetailChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-required-message-detail-changed

user-assistance-density :"reflow"|"efficient"|"compact"

Specifies the density of the form component's user assistance presentation. It can be shown inline with reserved rows to prevent reflow if a user assistance text shows up, inline without reserved rows that would reflow if a user assistance text shows up, or it can be shown compactly in a popup instead.
Supported Values:
Value Description
compact Messages and required are shown inline under the field with reserved space. Help & hints will appear in a popup with a help icon.
efficient Messages and required are shown inline under the field with reserved space. Help & hints will appear in a popup with a help icon.
reflow Messages and required are shown inline under the field with no reserved space. Help & hints will appear in a popup with a help icon.
Default Value:
  • "reflow"
Names
Item Name
Property userAssistanceDensity
Property change event userAssistanceDensityChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-user-assistance-density-changed

(readonly) valid :"valid"|"pending"|"invalidHidden"|"invalidShown"

The current valid state of the component. It is evaluated on initial render. It is re-evaluated

  • when messagesCustom is updated, since messagesCustom can be added by the app developer any time.
  • when showMessages() is called. Since showMessages() moves the hidden messages into messages shown, if the valid state was "invalidHidden" then it would become "invalidShown".
  • when the required property has changed. If a component is empty and has required set, the valid state may be "invalidHidden" (if no invalid messages are being shown as well). If required property is removed, the valid state would change to "valid".

Note: New valid states may be added to the list of valid values in future releases. Any new values will start with "invalid" if it is an invalid state, "pending" if it is pending state, and "valid" if it is a valid state.

Supported Values:
Value Description
invalidHidden The component has invalid messages hidden and no invalid messages showing. An invalid message is one with severity 'error'.
invalidShown The component has invalid messages showing. An invalid message is one with severity 'error'.
pending The component is waiting for the validation state to be determined. The 'pending' state is set at the start of the convert/validate process.
valid The component is valid
Supports writeback:
  • true
Names
Item Name
Property valid
Property change event validChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-valid-changed

value :boolean

The value of the component.

When value property changes due to programmatic intervention, the component always clears all messages including messagesCustom, runs deferred validation, and always refreshes UI display value.

When the checkbox is cleared and the value is committed, the value property is set to false.

Running Validation

  • component always runs deferred validation; the valid property is updated with the result.
Default Value:
  • false
Supports writeback:
  • true
Names
Item Name
Property value
Property change event valueChanged
Property change listener attribute (must be of type function, see Events and Listeners for additional information.) on-value-changed

Methods

getProperty(property) : {any}

Retrieves the value of a property or a subproperty.
Parameters:
Name Type Description
property The property name to get. Supports dot notation for subproperty access.
Returns:
Type
any

reset : {any}

Resets the component by clearing all messages and messagesCustom attribute and updates the component's display value using the attribute value. User entered value will be erased when this method is called.
Returns:
Type
any

setProperties(properties) : {void}

Performs a batch set of properties.
Parameters:
Name Type Description
properties An object containing the property and value pairs to set.
Returns:
Type
void

setProperty(property, value) : {void}

Sets a property or a single subproperty for complex properties and notifies the component of the change, triggering a corresponding event.
Parameters:
Name Type Description
property The property name to set. Supports dot notation for subproperty access.
value The new value to set the property to.
Returns:
Type
void

showMessages : {any}

Takes all deferred messages and shows them. It then updates the valid property; e.g., if the valid state was "invalidHidden" before showMessages(), the valid state will become "invalidShown" after showMessages(). If there were no deferred messages this method simply returns.
Returns:
Type
any

validate : {Promise}

If enabled, validates the component's display value (or undefined if display value is empty) and updates the value option by performing the following steps.
  1. All messages are cleared, including custom messages added by the app.
  2. At the end of validation if there are errors, the messages are shown. If there were no errors, then the value option is updated.

If the component is readonly or disabled, returns a Promise that resolves to 'valid' without doing any validation.

Returns:

The Promise resolves to "valid" if the component is disabled or readonly. The Promise resolves to "invalid" if there were errors.

Type
Promise

Type Definitions

ComponentMessageItem

Properties:
Name Type Argument
detail string <optional>
severity "error" | "confirmation" | "info" | "warning" <optional>
summary string <optional>

Help

Form component help information.
Properties:
Name Type Argument Description
instruction string <optional>
 A type of user assistance text. User assistance text is used to provide guidance to help the user understand what data to enter or select.

HelpHints

The helpHints object contains a definition property and a source property.
Properties:
Name Type Argument Description
definition string <optional>
 A type of user assistance text. User assistance text is used to provide guidance to help the user understand what data to enter or select. help-hints could come from a help system.
source string <optional>
 Help source URL associated with the component.
sourceText string <optional>
 Custom text to be used for the source link.