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OO.ui.LabelWidget

Extends

Constructor

new OO.ui.LabelWidget([config]) #

LabelWidgets help identify the function of interface elements. Each LabelWidget can be configured with a label option that is set to a string, a label node, or a function:

  • String: a plaintext string
  • jQuery selection: a jQuery selection, used for anything other than a plaintext label, e.g., a label that includes a link or special styling, such as a gray color or additional graphical elements.
  • Function: a function that will produce a string in the future. Functions are used in cases where the value of the label is not currently defined.

In addition, the LabelWidget can be associated with an input widget, which will come into focus when the label is clicked.

Example

// Two LabelWidgets.
    const label1 = new OO.ui.LabelWidget( {
            label: 'plaintext label'
        } ),
        label2 = new OO.ui.LabelWidget( {
            label: $( '<a>' ).attr( 'href', 'default.html' ).text( 'jQuery label' )
        } ),
        // Create a fieldset layout with fields for each example.
        fieldset = new OO.ui.FieldsetLayout();
    fieldset.addItems( [
        new OO.ui.FieldLayout( label1 ),
        new OO.ui.FieldLayout( label2 )
    ] );
    $( document.body ).append( fieldset.$element );

Parameters:

Name Type Attributes Description
config Object optional

Configuration options

Properties:
Name Type Attributes Description
input OO.ui.InputWidget optional

Input widget that uses the label. Clicking the label will focus the specified input field.
Mixes in:
Source:
LabelWidgets help identify the function of interface elements.

Properties

label #

The label text. The label can be specified as a plaintext string, a function that will produce a string (will be resolved on construction time), or null for no label. The static value will be overridden if a label is specified with the #label config option.

Properties:

Type Description
string | function | null
Mixes in:
Source:
The label text.

title #

The title text, a function that returns text, or null for no title. The value of the static property is overridden if the #title config option is used.

If the element has a default title (e.g. <input type=file>), null will allow that title to be shown. Use empty string to suppress it.

Properties:

Type Description
string | function | null
Mixes in:
Source:
The title text, a function that returns text, or null for no title.

tagNamestatic #

Source:

Methods

getClosestScrollableElementContainer() → {HTMLElement} #

Get closest scrollable container.

Returns:

Closest scrollable container

Type
HTMLElement
Inherited from:
Source:
Get closest scrollable container.

getData() → {any} #

Get element data.

Returns:

Element data

Type
any
Inherited from:
Source:
Get element data.

getElementDocument() → {HTMLDocument} #

Get the DOM document.

Returns:

Document object

Type
HTMLDocument
Inherited from:
Source:
Get the DOM document.

getElementGroup() → {OO.ui.mixin.GroupElement|null} #

Get group element is in.

Returns:

Group element, null if none

Type
OO.ui.mixin.GroupElement | null
Inherited from:
Source:
Get group element is in.

getElementId() → {string} #

Ensure that the element has an 'id' attribute, setting it to an unique value if it's missing, and return its value.

Returns:

Type
string
Inherited from:
Source:

Ensure that the element has an 'id' attribute, setting it to an unique value if it's missing, and return its value.

getElementWindow() → {Window} #

Get the DOM window.

Returns:

Window object

Type
Window
Inherited from:
Source:
Get the DOM window.

getInputId() → {string|null} #

Get an ID of a labelable node which is part of this widget, if any, to be used for <label for> value.

If this function returns null, the widget should have a meaningful #simulateLabelClick method instead.

Returns:

The ID of the labelable element

Type
string | null
Inherited from:
Source:

Get an ID of a labelable node which is part of this widget, if any, to be used for <label for> value.

getTagName() → {string} #

Get the HTML tag name.

Override this method to base the result on instance information.

Returns:

HTML tag name

Type
string
Inherited from:
Source:
Get the HTML tag name.

highlightQuery(text, query, [compare], [combineMarks]) → {jQuery} #

Highlight the first occurrence of the query in the given text

Parameters:

Name Type Attributes Default Description
text string

Text
query string

Query to find
compare function optional

Optional string comparator, e.g. Intl.Collator().compare
combineMarks boolean optional
 false

Pull combining marks into highlighted text

Returns:

Text with the first match of the query sub-string wrapped in highlighted span

Type
jQuery
Mixes in:
Source:
Highlight the first occurrence of the query in the given text

isDisabled() → {boolean} #

Check if the widget is disabled.

Returns:

Widget is disabled

Type
boolean
Inherited from:
Source:
Check if the widget is disabled.

isElementAttached() → {boolean} #

Check if the element is attached to the DOM

Returns:

The element is attached to the DOM

Type
boolean
Inherited from:
Source:
Check if the element is attached to the DOM

isVisible() → {boolean} #

Check if element is visible.

Returns:

element is visible

Type
boolean
Inherited from:
Source:
Check if element is visible.

restorePreInfuseState(state)protected #

Restore the pre-infusion dynamic state for this widget.

This method is called after #$element has been inserted into DOM. The parameter is the return value of #gatherPreInfuseState.

Parameters:

Name Type Description
state Object
Inherited from:
Source:
Restore the pre-infusion dynamic state for this widget.

scrollElementIntoView([config]) → {jQuery.Promise} #

Scroll element into view.

Parameters:

Name Type Attributes Description
config Object optional

Configuration options

Returns:

Promise which resolves when the scroll is complete

Type
jQuery.Promise
Inherited from:
Source:
Scroll element into view.

setData(data) → {OO.ui.Element}chainable #

Set element data.

Parameters:

Name Type Description
data any

Element data

Returns:

The element, for chaining

Type
OO.ui.Element
Inherited from:
Source:
Set element data.

setDisabled([disabled]) → {OO.ui.Widget}chainable #

Set the 'disabled' state of the widget.

When a widget is disabled, it cannot be used and its appearance is updated to reflect this state.

Parameters:

Name Type Attributes Default Description
disabled boolean optional
 false

Disable widget

Returns:

The widget, for chaining

Type
OO.ui.Widget
Inherited from:
Source:
Set the 'disabled' state of the widget.

setElementGroup(group) → {OO.ui.Element}chainable #

Set group element is in.

Parameters:

Name Type Description
group OO.ui.mixin.GroupElement | null

Group element, null if none

Returns:

The element, for chaining

Type
OO.ui.Element
Inherited from:
Source:
Set group element is in.

setElementId(id) → {OO.ui.Element}chainable #

Set the element has an 'id' attribute.

Parameters:

Name Type Description
id string

Returns:

The element, for chaining

Type
OO.ui.Element
Inherited from:
Source:
Set the element has an 'id' attribute.

setLabelledBy(id) #

Set the element with the given ID as a label for this widget.

Parameters:

Name Type Description
id string | null
Inherited from:
Source:
Set the element with the given ID as a label for this widget.

simulateLabelClick() #

Simulate the behavior of clicking on a label (a HTML <label> element) bound to this input. HTML only allows <label> to act on specific "labelable" elements; complex widgets might need to override this method to provide intuitive, accessible behavior.

By default, this does nothing. OO.ui.mixin.TabIndexedElement overrides it for focusable widgets. Individual widgets may override it too.

This method is called by OO.ui.LabelWidget and OO.ui.FieldLayout. It should not be called directly.

Inherited from:
Source:
Simulate the behavior of clicking on a label (a HTML <label> element) bound to this input.

supports(methods) → {boolean} #

Check if element supports one or more methods.

Parameters:

Name Type Description
methods string | Array.<string>

Method or list of methods to check

Returns:

All methods are supported

Type
boolean
Inherited from:
Source:
Check if element supports one or more methods.

toggle([show]) → {OO.ui.Element}chainable #

Toggle visibility of an element.

Parameters:

Name Type Attributes Description
show boolean optional

Make element visible, omit to toggle visibility

Returns:

The element, for chaining

Type
OO.ui.Element

Fires:

Inherited from:
Source:
Toggle visibility of an element.

updateDisabled() → {OO.ui.Widget}chainable #

Update the disabled state, in case of changes in parent widget.

Returns:

The widget, for chaining

Type
OO.ui.Widget
Inherited from:
Source:
Update the disabled state, in case of changes in parent widget.

updateThemeClasses() #

Update the theme-provided classes.

This is called in element mixins and widget classes any time state changes. Updating is debounced, minimizing overhead of changing multiple attributes and guaranteeing that theme updates do not occur within an element's constructor

Inherited from:
Source:
Update the theme-provided classes.

Events

disable(disabled) #

A 'disable' event is emitted when the disabled state of the widget changes (i.e. on disable and enable).

Parameters:

Name Type Description
disabled boolean

Widget is disabled
Inherited from:
Source:

A 'disable' event is emitted when the disabled state of the widget changes (i.e.

toggle(visible) #

A 'toggle' event is emitted when the visibility of the widget changes.

Parameters:

Name Type Description
visible boolean

Widget is visible
Inherited from:
Source:
A 'toggle' event is emitted when the visibility of the widget changes.