Class: Widget<P>

The base class for all Serenity widgets. A widget wraps a DOM node, manages its lifecycle (create/destroy), associates itself with its element for later lookup, and provides helpers for id prefixes, validation and rendering.

Extended by

Type Parameters

P

P = { }

The widget's options/props type.

Constructors

Constructor

new Widget<P>(props): Widget<P>

Defined in: src/ui/widgets/widget.ts:31

Creates a widget bound to the given props, resolving the DOM node, associating the widget with it and rendering its contents.

Parameters

props

WidgetProps<P>

The widget props, including the target element.

Returns

Widget<P>

Properties

domNode

readonly domNode: HTMLElement

Defined in: src/ui/widgets/widget.ts:24

The DOM node this widget is bound to.

idPrefix

readonly idPrefix: string

Defined in: src/ui/widgets/widget.ts:22

The id prefix used for this widget's child element ids.

options

protected readonly options: WidgetProps<P>

Defined in: src/ui/widgets/widget.ts:18

The widget's options/props.

uniqueName

readonly uniqueName: string

Defined in: src/ui/widgets/widget.ts:20

A unique name for this widget instance, used for event namespacing.

[typeInfo]

static [typeInfo]: ClassTypeInfo<"Serenity.">

Defined in: src/ui/widgets/widget.ts:366

isComponent

readonly static isComponent: true = true

Defined in: src/ui/widgets/widget.ts:334

Accessors

element

Get Signature

get element(): Fluent

Defined in: src/ui/widgets/widget.ts:82

Returns a Fluent(this.domNode) object

Returns

Fluent

props

Get Signature

get props(): WidgetProps<P>

Defined in: src/ui/widgets/widget.ts:307

Returns the widget's props/options.

Returns

WidgetProps<P>

Methods

addCssClass()

protected addCssClass(): void

Defined in: src/ui/widgets/widget.ts:89

Adds the widget's CSS class to its DOM node.

Returns

void

addValidationRule()

Call Signature

addValidationRule(rule, uniqueName?): void

Defined in: src/ui/widgets/widget.ts:142

Adds a validation rule to the widget's DOM node.

Parameters

rule

(input) => string

The validation rule function, or a unique name when the two-argument overload is used.

uniqueName?

string

A unique name for the rule, or the rule function when the two-argument overload is used.

Returns

void

Call Signature

addValidationRule(uniqueName, rule): void

Defined in: src/ui/widgets/widget.ts:143

Adds a validation rule to the widget's DOM node.

Parameters

uniqueName

string

A unique name for the rule, or the rule function when the two-argument overload is used.

rule

(input) => string

The validation rule function, or a unique name when the two-argument overload is used.

Returns

void

afterRender()

protected afterRender(callback): void

Defined in: src/ui/widgets/widget.ts:228

Queues a callback to run after the widget's contents are rendered.

Parameters

callback

() => void

The callback to run after rendering.

Returns

void

byId()

protected byId<TElement>(id): Fluent<TElement>

Defined in: src/ui/widgets/widget.ts:154

Finds a child element by its prefix-relative id.

Type Parameters

TElement

TElement extends HTMLElement = HTMLElement

Parameters

id

string

The id relative to the widget's id prefix.

Returns

Fluent<TElement>

A Fluent wrapper for the matching element.

change()

change(handler): void

Defined in: src/ui/widgets/widget.ts:179

Registers a change handler on the widget's DOM node.

Parameters

handler

(e) => void

The change event handler.

Returns

void

changeSelect2()

changeSelect2(handler): void

Defined in: src/ui/widgets/widget.ts:188

Registers a change handler that ignores changes originating from combobox setting values.

Parameters

handler

(e) => void

The change event handler.

Returns

void

deferRender()

protected deferRender(): boolean

Defined in: src/ui/widgets/widget.ts:98

Determines whether rendering should be deferred until init is called.

Returns

boolean

True to defer rendering.

destroy()

destroy(): void

Defined in: src/ui/widgets/widget.ts:61

Destroys the widget, removing its association with the DOM node, its CSS classes and its event handlers.

Returns

void

findById()

protected findById<TElement>(id): TElement

Defined in: src/ui/widgets/widget.ts:163

Finds a child element by its prefix-relative id.

Type Parameters

TElement

TElement extends HTMLElement = HTMLElement

Parameters

id

string

The id relative to the widget's id prefix.

Returns

TElement

The matching element, or null if not found.

getCssClass()

protected getCssClass(): string

Defined in: src/ui/widgets/widget.ts:106

Returns the CSS class(es) applied to the widget's DOM node.

Returns

string

The space-separated CSS class string.

getCustomAttribute()

protected getCustomAttribute<TAttr>(attrType, inherit): TAttr

Defined in: src/ui/widgets/widget.ts:220

Returns a custom attribute applied to the widget's type.

Type Parameters

TAttr

TAttr extends CustomAttribute

Parameters

attrType

(...args) => TAttr

The attribute type to look up.

inherit

boolean = true

Whether to search inherited types; defaults to true.

Returns

TAttr

The matching attribute, or null.

getGridField()

getGridField(): Fluent

Defined in: src/ui/widgets/widget.ts:171

Returns the closest .field element containing the widget's DOM node.

Returns

Fluent

A Fluent wrapper for the grid field.

init()

init(): this

Defined in: src/ui/widgets/widget.ts:243

Initializes the widget, rendering its contents if rendering was deferred.

Returns

this

This widget instance.

internalRenderContents()

internalRenderContents(): void

Defined in: src/ui/widgets/widget.ts:266

Renders the widget's contents and runs any queued after-render callbacks.

Returns

void

legacyTemplateRender()

protected legacyTemplateRender(): boolean

Defined in: src/ui/widgets/widget.ts:291

Renders the widget from a legacy getTemplate string, if defined.

Returns

boolean

True if a legacy template was rendered.

render()

render(): any

Defined in: src/ui/widgets/widget.ts:253

Returns the main element for this widget or the document fragment. As widgets may get their elements from props unlike regular JSX widgets, this method should not be overridden. Override renderContents() instead.