The Combo component is similar to the Select component in that it provides a list of options from which the user can make a selection. In contrast to the Select component, the Combo component displays all options in a virtualized list of items, meaning the combo box can simultaneously show thousands of options, where one or more options can be selected. Additionally, users can create custom item templates, allowing for robust data visualization. The Combo component features case-sensitive filtering, grouping, complex data binding, dynamic addition of values and more.
- Element
-
igc-combo
- Slots
-
prefix— Renders content before the input of the combo. -
suffix— Renders content after the input of the combo. -
header— Renders a container before the list of options of the combo. -
footer— Renders a container after the list of options of the combo. -
empty— Renders content when the combo dropdown list has no items/data. -
helper-text— Renders content below the input of the combo. -
toggle-icon— Renders content inside the suffix container of the combo. -
clear-icon— Renders content inside the suffix container of the combo. -
value-missing— Renders content when the required validation fails. -
custom-error— Renders content when setCustomValidity(message) is set. -
invalid— Renders content when the component is in invalid state (validity.valid = false).
- CSS Parts
-
label— The encapsulated text label of the combo. -
input— The main input field of the combo. -
native-input— The native input of the main input field of the combo. -
prefix— The prefix wrapper of the combo. -
suffix— The suffix wrapper of the combo. -
toggle-icon— The toggle icon wrapper of the combo. -
clear-icon— The clear icon wrapper of the combo. -
case-icon— The case icon wrapper of the combo. -
helper-text— The helper text wrapper of the combo. -
search-input— The search input field of the combo. -
list-wrapper— The list of options wrapper of the combo. -
list— The list of options box of the combo. -
item— Represents each item in the list of options of the combo. -
group-header— Represents each header in the list of options of the combo. -
active— Appended to the item parts list when the item is active of the combo. -
selected— Appended to the item parts list when the item is selected of the combo. -
checkbox— Represents each checkbox of each list item of the combo. -
checkbox-indicator— Represents the checkbox indicator of each list item of the combo. -
checked— Appended to checkbox parts list when checkbox is checked in the combo. -
header— The container holding the header content of the combo. -
footer— The container holding the footer content of the combo. -
empty— The container holding the empty content of the combo.
Constructors
Section titled "Constructors"IgcComboComponent
new IgcComboComponent(): IgcComboComponent Defined in src/components/combo/combo.ts:563
Returns IgcComboComponent
Properties
Section titled "Properties"autofocus
Section titled "autofocus"The autofocus attribute of the control.
autofocus: boolean Defined in src/components/combo/combo.ts:325
autofocusList
Section titled "autofocusList"Focuses the list of options when the menu opens.
autofocusList: boolean = false Defined in src/components/combo/combo.ts:333
caseSensitiveIcon
Section titled "caseSensitiveIcon"Enables the case sensitive search icon in the filtering input.
caseSensitiveIcon: boolean = false Defined in src/components/combo/combo.ts:461
disableClear
Section titled "disableClear"Hides the clear button.
disableClear: boolean = false Defined in src/components/combo/combo.ts:484
disabled
Section titled "disabled"Inherited from: FormAssociatedRequiredMixin( EventEmitterMixin< IgcComboComponentEventMap, AbstractConstructor<IgcBaseComboBoxComponent> >(IgcBaseComboBoxComponent) )
The disabled state of the component.
disabled: boolean emitEvent
Section titled "emitEvent"Inherited from: FormAssociatedRequiredMixin( EventEmitterMixin< IgcComboComponentEventMap, AbstractConstructor<IgcBaseComboBoxComponent> >(IgcBaseComboBoxComponent) )
emitEvent: object & object Defined in src/components/common/mixins/event-emitter.ts:30, src/components/common/mixins/combo-box.ts:16
groupHeaderTemplate
Section titled "groupHeaderTemplate"The template used for the content of each combo group header.
groupHeaderTemplate: ComboItemTemplate<T> Defined in src/components/combo/combo.ts:501
Optional groupKey
Section titled "groupKey"The key in the data source used to group items in the list.
groupKey: string | keyof T Defined in src/components/combo/combo.ts:427
groupSorting
Section titled "groupSorting"Sorts the items in each group by ascending or descending order.
groupSorting: GroupingDirection = 'asc' Defined in src/components/combo/combo.ts:436
invalid
Section titled "invalid"Inherited from: FormAssociatedRequiredMixin( EventEmitterMixin< IgcComboComponentEventMap, AbstractConstructor<IgcBaseComboBoxComponent> >(IgcBaseComboBoxComponent) )
Sets the control into invalid state (visual state only).
invalid: boolean itemTemplate
Section titled "itemTemplate"The template used for the content of each combo item.
itemTemplate: ComboItemTemplate<T> Defined in src/components/combo/combo.ts:492
Optional label
Section titled "label"The label attribute of the control.
label: string Defined in src/components/combo/combo.ts:354
Inherited from: FormAssociatedRequiredMixin( EventEmitterMixin< IgcComboComponentEventMap, AbstractConstructor<IgcBaseComboBoxComponent> >(IgcBaseComboBoxComponent) )
The name attribute of the control.
name: string Inherited from: FormAssociatedRequiredMixin( EventEmitterMixin< IgcComboComponentEventMap, AbstractConstructor<IgcBaseComboBoxComponent> >(IgcBaseComboBoxComponent) )
Sets the open state of the component.
open: boolean = false Defined in src/components/common/mixins/combo-box.ts:32
outlined
Section titled "outlined"The outlined attribute of the control.
outlined: boolean = false Defined in src/components/combo/combo.ts:295
Optional placeholder
Section titled "placeholder"The placeholder attribute of the control.
placeholder: string Defined in src/components/combo/combo.ts:361
tagName
Section titled "tagName"The tagName read-only property of the Element interface returns the tag name of the element on which it's called.
tagName: "igc-combo" = 'igc-combo' Defined in src/components/combo/combo.ts:136
Accessors
Section titled "Accessors"The data source used to generate the list of options.
set data(value: T[]): void Defined in src/components/combo/combo.ts:279
Parameters
- value:
T[]
Returns void
defaultValue
Section titled "defaultValue"get defaultValue(): unknown Defined in src/components/common/mixins/forms/types.ts:163
Returns unknown
The initial value of the component.
set defaultValue(value: unknown): void Defined in src/components/common/mixins/forms/types.ts:162
Parameters
- value:
unknown
Returns void
disableFiltering
Section titled "disableFiltering"Disables the filtering of the list of options.
set disableFiltering(value: boolean): void Defined in src/components/combo/combo.ts:469
Parameters
- value:
boolean
Returns void
displayKey
Section titled "displayKey"get displayKey(): keyof T | undefined Defined in src/components/combo/combo.ts:418
Returns keyof T | undefined
The key in the data source used to display items in the list.
set displayKey(value: keyof T | undefined): void Defined in src/components/combo/combo.ts:411
Parameters
- value:
keyof T | undefined
Returns void
filteringOptions
Section titled "filteringOptions"get filteringOptions(): FilteringOptions<T> Defined in src/components/combo/combo.ts:451
Returns FilteringOptions<T>
An object that configures the filtering of the combo.
set filteringOptions(value: Partial<FilteringOptions<T>>): void Defined in src/components/combo/combo.ts:447
Parameters
- value:
Partial<FilteringOptions<T>>
Returns void
Returns the HTMLFormElement associated with this element.
get form(): HTMLFormElement | null Defined in src/components/common/mixins/forms/types.ts:45
Returns HTMLFormElement | null
locale
Section titled "locale"Gets/Sets the locale used for getting language, affecting resource strings.
set locale(value: string): void Defined in src/components/combo/combo.ts:340
Parameters
- value:
string
Returns void
placeholderSearch
Section titled "placeholderSearch"The placeholder attribute of the search input.
set placeholderSearch(value: string | undefined): void Defined in src/components/combo/combo.ts:368
Parameters
- value:
string | undefined
Returns void
required
Section titled "required"When set, makes the component a required field for validation.
set required(value: boolean): void Defined in src/components/common/mixins/forms/types.ts:180
Parameters
- value:
boolean
Returns void
resourceStrings
Section titled "resourceStrings"get resourceStrings(): IComboResourceStrings Defined in src/components/combo/combo.ts:388
Returns IComboResourceStrings
The resource strings for localization.
set resourceStrings(value: IComboResourceStrings): void Defined in src/components/combo/combo.ts:384
Parameters
- value:
IComboResourceStrings
Returns void
selection
Section titled "selection"Returns the current selection as an array of objects as provided in the data source.
get selection(): T[] Defined in src/components/combo/combo.ts:555
Returns T[]
singleSelect
Section titled "singleSelect"Enables single selection mode and moves item filtering to the main input.
set singleSelect(value: boolean): void Defined in src/components/combo/combo.ts:303
Parameters
- value:
boolean
Returns void
validationMessage
Section titled "validationMessage"A string containing the validation message of this element.
get validationMessage(): string Defined in src/components/common/mixins/forms/types.ts:54
Returns string
validity
Section titled "validity"Returns a ValidityState object which represents the different validity states the element can be in, with respect to constraint validation.
get validity(): ValidityState Defined in src/components/common/mixins/forms/types.ts:51
Returns ValidityState
value
Section titled "value"Returns the current selection as a list of comma separated values, represented by the value key, when provided.
get value(): ComboValue<T>[] Defined in src/components/combo/combo.ts:548
Returns ComboValue<T>[]
Sets the value (selected items). The passed value must be a valid JSON array.
If the data source is an array of complex objects, the valueKey attribute must be set.
Note that when displayKey is not explicitly set, it will fall back to the value of valueKey.
set value(items: ComboValue<T>[]): void Defined in src/components/combo/combo.ts:535
Example
<igc-combo
.data=${[
{
id: 'BG01',
name: 'Sofia'
},
{
id: 'BG02',
name: 'Plovdiv'
}
]}
display-key='name'
value-key='id'
value='["BG01", "BG02"]'>
</igc-combo> Parameters
- items:
ComboValue<T>[]
Returns void
valueKey
Section titled "valueKey"get valueKey(): keyof T | undefined Defined in src/components/combo/combo.ts:402
Returns keyof T | undefined
The key in the data source used when selecting items.
set valueKey(value: keyof T | undefined): void Defined in src/components/combo/combo.ts:397
Parameters
- value:
keyof T | undefined
Returns void
willValidate
Section titled "willValidate"A boolean value which returns true if the element is a submittable element that is a candidate for constraint validation.
get willValidate(): boolean Defined in src/components/common/mixins/forms/types.ts:60
Returns boolean
Methods
Section titled "Methods"addEventListener
Section titled "addEventListener"addEventListener(type: K, listener: object, options: boolean | AddEventListenerOptions): void Defined in src/components/common/mixins/event-emitter.ts:7
Parameters
- type:
K - listener:
object - options:
boolean | AddEventListenerOptions
Returns void
Removes focus from the component.
blur(): void Defined in src/components/combo/combo.ts:955
Returns void
checkValidity
Section titled "checkValidity"Checks for validity of the control and emits the invalid event if it invalid.
checkValidity(): boolean Defined in src/components/common/mixins/forms/types.ts:146
Returns boolean
deselect
Section titled "deselect"Deselects option(s) in the list by either reference or valueKey. If not argument is provided all items will be deselected.
deselect(items: Item<T> | Item<T>[]): void Defined in src/components/combo/combo.ts:1010
Parameters
- items:
Item<T> | Item<T>[]One or more items to be deselected. Multiple items should be passed as an array. When valueKey is specified, the corresponding value should be used in place of the item reference.
Returns void
Example
const combo<IgcComboComponent<T>> = document.querySelector('igc-combo');
// Deselect one item at a time by reference when valueKey is not specified.
combo.deselect(combo.data[0]);
// Deselect multiple items at a time by reference when valueKey is not specified.
combo.deselect([combo.data[0], combo.data[1]]);
// Deselect one item at a time when valueKey is specified.
combo.deselect('BG01');
// Deselect multiple items at a time when valueKey is specified.
combo.deselect(['BG01', 'BG02']); focus
Section titled "focus"Sets focus on the component.
focus(options: FocusOptions): void Defined in src/components/combo/combo.ts:949
Parameters
- options:
FocusOptions
Returns void
Hides the component.
hide(): Promise<boolean> Defined in src/components/common/mixins/combo-box.ts:90
Returns Promise<boolean>
removeEventListener
Section titled "removeEventListener"removeEventListener(type: K, listener: object, options: boolean | EventListenerOptions): void Defined in src/components/common/mixins/event-emitter.ts:17
Parameters
- type:
K - listener:
object - options:
boolean | EventListenerOptions
Returns void
reportValidity
Section titled "reportValidity"Checks for validity of the control and shows the browser message if it invalid.
reportValidity(): boolean Defined in src/components/common/mixins/forms/types.ts:149
Returns boolean
select
Section titled "select"Selects option(s) in the list by either reference or valueKey. If not argument is provided all items will be selected.
select(items: Item<T> | Item<T>[]): void Defined in src/components/combo/combo.ts:982
Parameters
- items:
Item<T> | Item<T>[]One or more items to be selected. Multiple items should be passed as an array. When valueKey is specified, the corresponding value should be used in place of the item reference.
Returns void
Example
const combo<IgcComboComponent<T>> = document.querySelector('igc-combo');
// Select one item at a time by reference when valueKey is not specified.
combo.select(combo.data[0]);
// Select multiple items at a time by reference when valueKey is not specified.
combo.select([combo.data[0], combo.data[1]]);
// Select one item at a time when valueKey is specified.
combo.select('BG01');
// Select multiple items at a time when valueKey is specified.
combo.select(['BG01', 'BG02']); setCustomValidity
Section titled "setCustomValidity"Sets a custom validation message for the control.
As long as message is not empty, the control is considered invalid.
setCustomValidity(message: string): void Defined in src/components/common/mixins/forms/types.ts:155
Parameters
- message:
string
Returns void
Shows the component.
show(): Promise<boolean> Defined in src/components/common/mixins/combo-box.ts:85
Returns Promise<boolean>
toggle
Section titled "toggle"Toggles the open state of the component.
toggle(): Promise<boolean> Defined in src/components/common/mixins/combo-box.ts:95
Returns Promise<boolean>
register
Section titled "register"register(): void Defined in src/components/combo/combo.ts:140
Returns void
Events
Section titled "Events"igcChange
Section titled "igcChange"igcChange: CustomEvent<IgcComboChangeEventArgs<any>> Defined in src/components/combo/types.ts:50
igcClosed
Section titled "igcClosed"igcClosed: CustomEvent<void> Defined in src/components/combo/types.ts:59
igcClosing
Section titled "igcClosing"igcClosing: CustomEvent<void> Defined in src/components/combo/types.ts:58
igcOpened
Section titled "igcOpened"igcOpened: CustomEvent<void> Defined in src/components/combo/types.ts:57
igcOpening
Section titled "igcOpening"igcOpening: CustomEvent<void> Defined in src/components/combo/types.ts:56