{"version":3,"file":"autocomplete.mjs","sources":["../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/src/angular/autocomplete/autocomplete.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/src/angular/autocomplete/autocomplete.html","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/src/angular/autocomplete/autocomplete-origin.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/src/angular/autocomplete/autocomplete-trigger.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/src/angular/autocomplete/autocomplete.module.ts"],"sourcesContent":["import { ActiveDescendantKeyManager, _IdGenerator } from '@angular/cdk/a11y';\nimport { Platform } from '@angular/cdk/platform';\nimport {\n AfterContentInit,\n booleanAttribute,\n ChangeDetectionStrategy,\n ChangeDetectorRef,\n Component,\n ContentChildren,\n ElementRef,\n EventEmitter,\n inject,\n InjectionToken,\n Input,\n OnDestroy,\n Output,\n QueryList,\n TemplateRef,\n ViewChild,\n ViewEncapsulation,\n} from '@angular/core';\nimport {\n SbbOptgroup,\n SbbOption,\n SbbOptionHint,\n SBB_OPTION_PARENT_COMPONENT,\n} from '@sbb-esta/angular/core';\nimport { BehaviorSubject, Subscription } from 'rxjs';\n\n/** Event object that is emitted when an autocomplete option is selected. */\nexport class SbbAutocompleteSelectedEvent {\n constructor(\n /** Reference to the autocomplete panel that emitted the event. */\n public source: SbbAutocomplete,\n /** Option that was selected. */\n public option: SbbOption,\n ) {}\n}\n\n/** Event object that is emitted when an autocomplete option is activated. */\nexport interface SbbAutocompleteActivatedEvent {\n /** Reference to the autocomplete panel that emitted the event. */\n source: SbbAutocomplete;\n /** Option that was selected. */\n option: SbbOption | null;\n}\n\n/** Default `sbb-autocomplete` options that can be overridden. */\nexport interface SbbAutocompleteDefaultOptions {\n /** Whether the first option should be highlighted when an autocomplete panel is opened. */\n autoActiveFirstOption?: boolean;\n\n /** Whether the active option should be selected as the user is navigating. */\n autoSelectActiveOption?: boolean;\n\n /** Whether the user is required to make a selection when they're interacting with the autocomplete. */\n requireSelection?: boolean;\n\n /** Class or list of classes to be applied to the autocomplete's overlay panel. */\n overlayPanelClass?: string | string[];\n}\n\n/** Injection token to be used to override the default options for `sbb-autocomplete`. */\nexport const SBB_AUTOCOMPLETE_DEFAULT_OPTIONS = new InjectionToken(\n 'sbb-autocomplete-default-options',\n {\n providedIn: 'root',\n factory: () => ({\n autoActiveFirstOption: false,\n autoSelectActiveOption: false,\n requireSelection: false,\n }),\n },\n);\n\n@Component({\n selector: 'sbb-autocomplete',\n exportAs: 'sbbAutocomplete',\n templateUrl: 'autocomplete.html',\n styleUrls: ['autocomplete.css'],\n encapsulation: ViewEncapsulation.None,\n changeDetection: ChangeDetectionStrategy.OnPush,\n providers: [\n {\n provide: SBB_OPTION_PARENT_COMPONENT,\n useExisting: SbbAutocomplete,\n },\n ],\n host: {\n class: 'sbb-autocomplete',\n },\n})\nexport class SbbAutocomplete implements AfterContentInit, OnDestroy {\n private _changeDetectorRef = inject(ChangeDetectorRef);\n private _elementRef = inject>(ElementRef);\n protected defaults: SbbAutocompleteDefaultOptions = inject(\n SBB_AUTOCOMPLETE_DEFAULT_OPTIONS,\n );\n\n private _activeOptionChanges = Subscription.EMPTY;\n\n /** Manages active item in option list based on key events. */\n _keyManager!: ActiveDescendantKeyManager;\n\n /** Whether the autocomplete panel should be visible, depending on option length. */\n get showPanel(): boolean {\n return this._showPanel.value;\n }\n _showPanel: BehaviorSubject = new BehaviorSubject(false);\n\n /** Whether the autocomplete panel is open. */\n get isOpen(): boolean {\n return this._isOpen && this.showPanel;\n }\n _isOpen: boolean = false;\n\n // The @ViewChild query for TemplateRef here needs to be static because some code paths\n // lead to the overlay being created before change detection has finished for this component.\n // Notably, another component may trigger `focus` on the autocomplete-trigger.\n\n /** @docs-private */\n @ViewChild(TemplateRef, { static: true }) template!: TemplateRef;\n\n /** Element for the panel containing the autocomplete options. */\n @ViewChild('panel') panel!: ElementRef;\n\n /** All of the defined select options. */\n @ContentChildren(SbbOption, { descendants: true }) options!: QueryList;\n\n /** All of the defined groups of options. */\n @ContentChildren(SbbOptgroup, { descendants: true }) optionGroups!: QueryList;\n\n /** All of the defined option hints. */\n @ContentChildren(SbbOptionHint, { descendants: true })\n hints!: QueryList;\n\n /** Aria label of the autocomplete. If not specified, the placeholder will be used as label. */\n @Input('aria-label') ariaLabel!: string;\n\n /** Input that can be used to specify the `aria-labelledby` attribute. */\n @Input('aria-labelledby') ariaLabelledby!: string;\n\n /** Function that maps an option's control value to its display value in the trigger. */\n @Input() displayWith: ((value: any) => string) | null = null;\n\n /**\n * Function which normalizes input values to highlight them in options.\n * E.g. If your function is (value: string) => value.replace(new RegExp('[ö]', 'i'), 'o')\n * and you search for 'Faroer', an option like 'Faröer' will be highlighted.\n * IMPORTANT: The provided function MAY NOT change the order of the characters or the length of the string.\n * (e.g. changing `ä` to `ae` would break the highlighting function)\n */\n @Input() localeNormalizer: ((value: string) => string) | null = null;\n\n /**\n * Whether the first option should be highlighted when the autocomplete panel is opened.\n * Can be configured globally through the `SBB_AUTOCOMPLETE_DEFAULT_OPTIONS` token.\n */\n @Input({ transform: booleanAttribute }) autoActiveFirstOption: boolean;\n\n /** Whether the active option should be selected as the user is navigating. */\n @Input({ transform: booleanAttribute }) autoSelectActiveOption: boolean;\n\n /**\n * Whether the user is required to make a selection when they're interacting with the\n * autocomplete. If the user moves away from the autocomplete without selecting an option from\n * the list, the value will be reset. If the user opens the panel and closes it without\n * interacting or selecting a value, the initial value will be kept.\n */\n @Input({ transform: booleanAttribute }) requireSelection: boolean;\n\n /**\n * Specify the width of the autocomplete panel. Can be any CSS sizing value, otherwise it will\n * match the width of its host.\n */\n @Input() panelWidth!: string | number;\n\n /** Event that is emitted whenever an option from the list is selected. */\n @Output()\n readonly optionSelected: EventEmitter =\n new EventEmitter();\n\n /** Event that is emitted when the autocomplete panel is opened. */\n @Output() readonly opened: EventEmitter = new EventEmitter();\n\n /** Event that is emitted when the autocomplete panel is closed. */\n @Output() readonly closed: EventEmitter = new EventEmitter();\n\n /** Emits whenever an option is activated. */\n @Output()\n readonly optionActivated: EventEmitter =\n new EventEmitter();\n\n /**\n * Takes classes set on the host sbb-autocomplete element and applies them to the panel\n * inside the overlay container to allow for easy styling.\n */\n @Input('class')\n set classList(value: string | string[]) {\n this._classList = value;\n this._elementRef.nativeElement.className = '';\n }\n _classList!: string | string[];\n\n /** If set to true, the panel is also displayed if there are no options but hints. */\n @Input({ transform: booleanAttribute }) showHintIfNoOptions: boolean = false;\n\n /** Unique ID to be used by autocomplete trigger's \"aria-controls\" property. */\n id: string = inject(_IdGenerator).getId('sbb-autocomplete-');\n\n /**\n * Tells any descendant `sbb-optgroup` to use the inert a11y pattern.\n * @docs-private\n */\n readonly inertGroups: boolean;\n\n constructor(...args: unknown[]);\n constructor() {\n const platform = inject(Platform);\n\n // TODO(crisbeto): the problem that the `inertGroups` option resolves is only present on\n // Safari using VoiceOver. We should occasionally check back to see whether the bug\n // wasn't resolved in VoiceOver, and if it has, we can remove this and the `inertGroups`\n // option altogether.\n this.inertGroups = platform?.SAFARI || false;\n this.autoActiveFirstOption = !!this.defaults.autoActiveFirstOption;\n this.autoSelectActiveOption = !!this.defaults.autoSelectActiveOption;\n this.requireSelection = !!this.defaults.requireSelection;\n }\n\n ngAfterContentInit() {\n this._keyManager = new ActiveDescendantKeyManager(this.options).withWrap();\n this._activeOptionChanges = this._keyManager.change.subscribe((index) => {\n if (this.isOpen) {\n this.optionActivated.emit({ source: this, option: this.options.toArray()[index] || null });\n }\n });\n\n // Set the initial visibility state.\n this._setVisibility();\n }\n\n ngOnDestroy() {\n this._activeOptionChanges.unsubscribe();\n this._keyManager?.destroy();\n }\n\n /**\n * Sets the panel scrollTop. This allows us to manually scroll to display options\n * above or below the fold, as they are not actually being focused when active.\n */\n _setScrollTop(scrollTop: number): void {\n if (this.panel) {\n this.panel.nativeElement.scrollTop = scrollTop;\n }\n }\n\n /** Returns the panel's scrollTop. */\n _getScrollTop(): number {\n return this.panel ? this.panel.nativeElement.scrollTop : 0;\n }\n\n /**\n * Panel should hide itself when the option list is empty.\n * If there are only hints and showHintIfNoOptions is true,\n * the panel should still be displayed.\n */\n _setVisibility() {\n this._showPanel.next(\n !!this.options.length || (!!this.hints.length && this.showHintIfNoOptions),\n );\n this._changeDetectorRef.markForCheck();\n }\n\n /** Emits the `select` event. */\n _emitSelectEvent(option: SbbOption): void {\n const event = new SbbAutocompleteSelectedEvent(this, option);\n this.optionSelected.emit(event);\n }\n\n /** Gets the aria-labelledby for the autocomplete panel. */\n _getPanelAriaLabelledby(labelId: string | null): string | null {\n if (this.ariaLabel) {\n return null;\n }\n\n const labelExpression = labelId ? labelId + ' ' : '';\n return this.ariaLabelledby ? labelExpression + this.ariaLabelledby : labelId;\n }\n}\n","\n \n \n \n\n","import { Directive, ElementRef, inject } from '@angular/core';\n\n/**\n * Directive applied to an element to make it usable\n * as a connection point for an autocomplete panel.\n */\n@Directive({\n selector: '[sbbAutocompleteOrigin]',\n exportAs: 'sbbAutocompleteOrigin',\n})\nexport class SbbAutocompleteOrigin {\n elementRef: ElementRef = inject>(ElementRef);\n\n constructor(...args: unknown[]);\n constructor() {}\n}\n","import { addAriaReferencedId, removeAriaReferencedId } from '@angular/cdk/a11y';\nimport { coerceStringArray } from '@angular/cdk/coercion';\nimport { DOWN_ARROW, ENTER, ESCAPE, hasModifierKey, TAB, UP_ARROW } from '@angular/cdk/keycodes';\nimport {\n ConnectedPosition,\n createRepositionScrollStrategy,\n FlexibleConnectedPositionStrategy,\n Overlay,\n OverlayConfig,\n OverlayRef,\n PositionStrategy,\n ScrollStrategy,\n} from '@angular/cdk/overlay';\nimport { _getEventTarget } from '@angular/cdk/platform';\nimport { TemplatePortal } from '@angular/cdk/portal';\nimport { ViewportRuler } from '@angular/cdk/scrolling';\nimport { DOCUMENT } from '@angular/common';\nimport {\n afterNextRender,\n AfterViewInit,\n booleanAttribute,\n ChangeDetectorRef,\n Directive,\n ElementRef,\n forwardRef,\n inject,\n InjectionToken,\n Injector,\n Input,\n NgZone,\n OnChanges,\n OnDestroy,\n SimpleChanges,\n ViewContainerRef,\n} from '@angular/core';\nimport { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';\nimport {\n countGroupLabelsBeforeOption,\n getOptionScrollPosition,\n SbbOption,\n SbbOptionSelectionChange,\n TypeRef,\n} from '@sbb-esta/angular/core';\nimport type { SbbFormField } from '@sbb-esta/angular/form-field';\nimport { SBB_FORM_FIELD } from '@sbb-esta/angular/form-field';\nimport {\n BehaviorSubject,\n combineLatest,\n defer,\n fromEvent,\n merge,\n Observable,\n of as observableOf,\n Subject,\n Subscription,\n} from 'rxjs';\nimport {\n delay,\n distinctUntilChanged,\n filter,\n map,\n startWith,\n switchMap,\n take,\n tap,\n} from 'rxjs/operators';\n\nimport {\n SbbAutocomplete,\n SbbAutocompleteDefaultOptions,\n SBB_AUTOCOMPLETE_DEFAULT_OPTIONS,\n} from './autocomplete';\nimport { SbbAutocompleteOrigin } from './autocomplete-origin';\n\n/** Injection token that determines the scroll handling while the autocomplete panel is open. */\nexport const SBB_AUTOCOMPLETE_SCROLL_STRATEGY = new InjectionToken<() => ScrollStrategy>(\n 'sbb-autocomplete-scroll-strategy',\n {\n providedIn: 'root',\n factory: () => {\n const injector = inject(Injector);\n return () => createRepositionScrollStrategy(injector);\n },\n },\n);\n\n/**\n * Creates an error to be thrown when attempting to use an autocomplete trigger without a panel.\n * @docs-private\n */\nexport function getSbbAutocompleteMissingPanelError(): Error {\n return Error(\n 'Attempting to open an undefined instance of `sbb-autocomplete`. ' +\n 'Make sure that the id passed to the `sbbAutocomplete` is correct and that ' +\n `you're attempting to open it after the ngAfterContentInit hook.`,\n );\n}\n\n@Directive({\n selector: `input[sbbAutocomplete]`,\n exportAs: 'sbbAutocompleteTrigger',\n providers: [\n {\n provide: NG_VALUE_ACCESSOR,\n useExisting: forwardRef(() => SbbAutocompleteTrigger),\n multi: true,\n },\n ],\n host: {\n class: 'sbb-autocomplete-trigger',\n '[attr.autocomplete]': 'autocompleteAttribute',\n '[attr.role]': 'autocompleteDisabled ? null : \"combobox\"',\n '[attr.aria-autocomplete]': 'autocompleteDisabled ? null : \"list\"',\n '[attr.aria-activedescendant]': '(panelOpen && activeOption) ? activeOption.id : null',\n '[attr.aria-expanded]': 'autocompleteDisabled ? null : panelOpen.toString()',\n '[attr.aria-controls]': '(autocompleteDisabled || !panelOpen) ? null : autocomplete?.id',\n '[attr.aria-haspopup]': 'autocompleteDisabled ? null : \"listbox\"',\n '[class.sbb-focused]': 'panelOpen',\n // Note: we use `focusin`, as opposed to `focus`, in order to open the panel\n // a little earlier. This avoids issues where IE delays the focusing of the input.\n '(focusin)': '_handleFocus()',\n '(blur)': '_onTouched()',\n '(input)': '_handleInput($event)',\n '(keydown)': '_handleKeydown($event)',\n '(click)': '_handleClick()',\n },\n})\nexport class SbbAutocompleteTrigger\n implements ControlValueAccessor, AfterViewInit, OnChanges, OnDestroy\n{\n private _element = inject>(ElementRef);\n private _overlay = inject(Overlay);\n private _viewContainerRef = inject(ViewContainerRef);\n private _zone = inject(NgZone);\n private _changeDetectorRef = inject(ChangeDetectorRef);\n private _formField = inject | null>(SBB_FORM_FIELD, {\n optional: true,\n host: true,\n });\n private _document = inject(DOCUMENT, { optional: true })!;\n private _viewportRuler = inject(ViewportRuler);\n private _defaults = inject(\n SBB_AUTOCOMPLETE_DEFAULT_OPTIONS,\n { optional: true },\n );\n\n private _overlayRef: OverlayRef | null = null;\n private _portal!: TemplatePortal;\n private _componentDestroyed = false;\n private _scrollStrategy = inject(SBB_AUTOCOMPLETE_SCROLL_STRATEGY);\n private _keydownSubscription: Subscription | null = null;\n private _outsideClickSubscription: Subscription | null = null;\n\n /** Old value of the native input. Used to work around issues with the `input` event on IE. */\n private _previousValue: string | number | null = null;\n\n /** Value of the input element when the panel was attached (even if there are no options). */\n private _valueOnAttach: string | number | null = null;\n\n /** Value on the previous keydown event. */\n private _valueOnLastKeydown: string | null = null;\n\n /** Strategy that is used to position the panel. */\n private _positionStrategy!: FlexibleConnectedPositionStrategy;\n\n /** The subscription for closing actions (some are bound to document). */\n private _closingActionsSubscription!: Subscription;\n\n /** Subscription to viewport size changes. */\n private _viewportSubscription = Subscription.EMPTY;\n\n /** Subscription to position changes */\n private _positionSubscription = Subscription.EMPTY;\n\n /** Subscription to highlight options */\n private _highlightSubscription = Subscription.EMPTY;\n\n /** Subscription to toggle classes on the connected element */\n private _connectedElementClassSubscription = Subscription.EMPTY;\n\n /** BehaviourSubject holding inputValue. Used for highlighting */\n private _inputValue = new BehaviorSubject('');\n\n /**\n * Whether the autocomplete can open the next time it is focused. Used to prevent a focused,\n * closed autocomplete from being reopened if the user switches to another browser tab and then\n * comes back.\n */\n private _canOpenOnNextFocus = true;\n\n /** Value inside the input before we auto-selected an option. */\n private _valueBeforeAutoSelection: string | undefined;\n\n /**\n * Current option that we have auto-selected as the user is navigating,\n * but which hasn't been propagated to the model value yet.\n */\n private _pendingAutoselectedOption: SbbOption | null = null;\n\n /** Stream of keyboard events that can close the panel. */\n private readonly _closeKeyEventStream = new Subject();\n\n /**\n * Event handler for when the window is blurred. Needs to be an\n * arrow function in order to preserve the context.\n */\n private _windowBlurHandler = () => {\n // If the user blurred the window while the autocomplete is focused, it means that it'll be\n // refocused when they come back. In this case we want to skip the first focus event, if the\n // pane was closed, in order to avoid reopening it unintentionally.\n this._canOpenOnNextFocus =\n this._document.activeElement !== this._element.nativeElement || this.panelOpen;\n };\n\n /** `View -> model callback called when value changes` */\n _onChange: (value: any) => void = () => {};\n\n /** `View -> model callback called when autocomplete has been touched` */\n _onTouched: () => void = () => {};\n\n /** The autocomplete panel to be attached to this trigger. */\n @Input('sbbAutocomplete')\n get autocomplete(): SbbAutocomplete {\n return this._autocomplete;\n }\n set autocomplete(autocomplete: SbbAutocomplete) {\n this._autocomplete = autocomplete;\n\n this._highlightSubscription.unsubscribe();\n this._connectedElementClassSubscription.unsubscribe();\n if (!autocomplete) {\n return;\n }\n\n const renderCallback = new Observable((subscriber) => {\n afterNextRender(() => subscriber.next(), { injector: this._injector });\n });\n const onReady = autocomplete.options ? observableOf(null) : renderCallback;\n\n this._highlightSubscription = onReady\n .pipe(\n switchMap(() =>\n combineLatest([\n this._inputValue,\n (autocomplete.options.changes as Observable).pipe(\n startWith(autocomplete.options.toArray()),\n ),\n ]),\n ),\n filter((value) => !!value[1] && !!value[1].length),\n )\n .subscribe(([inputValue, options]) => {\n options.forEach((option) =>\n option._highlight(inputValue, this.autocomplete.localeNormalizer),\n );\n });\n\n this._connectedElementClassSubscription = this.autocomplete._showPanel\n .pipe(\n distinctUntilChanged(),\n filter((s) => !s),\n )\n .subscribe(() => {\n this._getConnectedElement().nativeElement.classList.remove('sbb-input-with-open-panel');\n this._getConnectedElement().nativeElement.classList.remove(\n 'sbb-input-with-open-panel-above',\n );\n });\n }\n private _autocomplete!: SbbAutocomplete;\n\n /**\n * Position of the autocomplete panel relative to the trigger element. A position of `auto`\n * will render the panel underneath the trigger if there is enough space for it to fit in\n * the viewport, otherwise the panel will be shown above it. If the position is set to\n * `above` or `below`, the panel will always be shown above or below the trigger. no matter\n * whether it fits completely in the viewport.\n */\n @Input('sbbAutocompletePosition') position: 'auto' | 'above' | 'below' = 'auto';\n\n /**\n * Reference relative to which to position the autocomplete panel.\n * Defaults to the autocomplete trigger element.\n */\n @Input('sbbAutocompleteConnectedTo') connectedTo!: SbbAutocompleteOrigin;\n\n /**\n * `autocomplete` attribute to be set on the input element.\n * @docs-private\n */\n @Input('autocomplete') autocompleteAttribute: string = 'off';\n\n /**\n * Whether the autocomplete is disabled. When disabled, the element will\n * act as a regular input and the user won't be able to open the panel.\n */\n @Input({ alias: 'sbbAutocompleteDisabled', transform: booleanAttribute })\n autocompleteDisabled: boolean = false;\n\n private _initialized = new Subject();\n\n private _injector = inject(Injector);\n\n constructor(...args: unknown[]);\n constructor() {}\n\n /** Class to apply to the panel when it's above the input. */\n private _aboveClass: string = 'sbb-autocomplete-panel-above';\n\n ngAfterViewInit() {\n this._initialized.next();\n this._initialized.complete();\n\n const window = this._getWindow();\n\n if (typeof window !== 'undefined') {\n this._zone.runOutsideAngular(() => window.addEventListener('blur', this._windowBlurHandler));\n }\n }\n\n ngOnChanges(changes: SimpleChanges) {\n if (changes['position'] && this._positionStrategy) {\n this._setStrategyPositions(this._positionStrategy);\n\n if (this.panelOpen) {\n this._overlayRef!.updatePosition();\n }\n }\n }\n\n ngOnDestroy() {\n const window = this._getWindow();\n\n if (typeof window !== 'undefined') {\n window.removeEventListener('blur', this._windowBlurHandler);\n }\n\n this._viewportSubscription.unsubscribe();\n this._positionSubscription.unsubscribe();\n this._highlightSubscription.unsubscribe();\n this._connectedElementClassSubscription.unsubscribe();\n this._componentDestroyed = true;\n this._destroyPanel();\n this._closeKeyEventStream.complete();\n this._clearFromModal();\n }\n\n /** Whether or not the autocomplete panel is open. */\n get panelOpen(): boolean {\n return this._overlayAttached && this.autocomplete.showPanel;\n }\n private _overlayAttached: boolean = false;\n\n /** Opens the autocomplete suggestion panel. */\n openPanel(): void {\n this._openPanelInternal();\n }\n\n /** Closes the autocomplete suggestion panel. */\n closePanel(): void {\n if (!this._overlayAttached) {\n return;\n }\n\n if (this.panelOpen) {\n // Only emit if the panel was visible.\n // `afterNextRender` always runs outside of the Angular zone, so all the subscriptions from\n // `_subscribeToClosingActions()` are also outside of the Angular zone.\n // We should manually run in Angular zone to update UI after panel closing.\n this._zone.run(() => {\n this.autocomplete.closed.emit();\n });\n }\n\n this.autocomplete._isOpen = this._overlayAttached = false;\n this._pendingAutoselectedOption = null;\n\n if (this._overlayRef && this._overlayRef.hasAttached()) {\n this._overlayRef.detach();\n this._closingActionsSubscription.unsubscribe();\n }\n\n this._updatePanelState();\n\n this._getConnectedElement().nativeElement.classList.remove('sbb-input-with-open-panel');\n this._getConnectedElement().nativeElement.classList.remove('sbb-input-with-open-panel-above');\n\n // Note that in some cases this can end up being called after the component is destroyed.\n // Add a check to ensure that we don't try to run change detection on a destroyed view.\n if (!this._componentDestroyed) {\n // We need to trigger change detection manually, because\n // `fromEvent` doesn't seem to do it at the proper time.\n // This ensures that the label is reset when the\n // user clicks outside.\n this._changeDetectorRef.detectChanges();\n }\n }\n\n /**\n * Updates the position of the autocomplete suggestion panel to ensure that it fits all options\n * within the viewport.\n */\n updatePosition(): void {\n if (this._overlayAttached) {\n this._overlayRef!.updatePosition();\n }\n }\n\n /**\n * A stream of actions that should close the autocomplete panel, including\n * when an option is selected, on blur, and when TAB is pressed.\n */\n get panelClosingActions(): Observable {\n return merge(\n this.optionSelections,\n this.autocomplete._keyManager.tabOut.pipe(filter(() => this._overlayAttached)),\n this._closeKeyEventStream,\n this._getOutsideClickStream(),\n this._overlayRef\n ? this._overlayRef.detachments().pipe(filter(() => this._overlayAttached))\n : observableOf(),\n ).pipe(\n // Normalize the output so we return a consistent type.\n map((event) => (event instanceof SbbOptionSelectionChange ? event : null)),\n );\n }\n\n /** Stream of changes to the selection state of the autocomplete options. */\n readonly optionSelections: Observable = defer(() => {\n const options = this.autocomplete ? this.autocomplete.options : null;\n\n if (options) {\n return options.changes.pipe(\n startWith(options),\n switchMap(() => merge(...options.map((option) => option.onSelectionChange))),\n );\n }\n // If there are any subscribers before `ngAfterViewInit`, the `autocomplete` will be undefined.\n // Return a stream that we'll replace with the real one once everything is in place.\n return this._initialized.pipe(switchMap(() => this.optionSelections));\n }) as Observable;\n\n /** The currently active option, coerced to SbbOption type. */\n get activeOption(): SbbOption | null {\n if (this.autocomplete && this.autocomplete._keyManager) {\n return this.autocomplete._keyManager.activeItem;\n }\n\n return null;\n }\n\n /** Stream of clicks outside of the autocomplete panel. */\n private _getOutsideClickStream(): Observable {\n return merge(\n fromEvent(this._document, 'click') as Observable,\n fromEvent(this._document, 'auxclick') as Observable,\n fromEvent(this._document, 'touchend') as Observable,\n ).pipe(\n filter((event) => {\n // If we're in the Shadow DOM, the event target will be the shadow root, so we have to\n // fall back to check the first element in the path of the click event.\n const clickTarget = _getEventTarget(event)!;\n const formField = this._formField ? this._formField._elementRef.nativeElement : null;\n const customOrigin = this.connectedTo ? this.connectedTo.elementRef.nativeElement : null;\n\n return (\n this._overlayAttached &&\n clickTarget !== this._element.nativeElement &&\n // Normally focus moves inside `mousedown` so this condition will almost always be\n // true. Its main purpose is to handle the case where the input is focused from an\n // outside click which propagates up to the `body` listener within the same sequence\n // and causes the panel to close immediately (see angular/components#3106).\n this._document.activeElement !== this._element.nativeElement &&\n (!formField || !formField.contains(clickTarget)) &&\n (!customOrigin || !customOrigin.contains(clickTarget)) &&\n !!this._overlayRef &&\n !this._overlayRef.overlayElement.contains(clickTarget)\n );\n }),\n );\n }\n\n // Implemented as part of ControlValueAccessor.\n writeValue(value: any): void {\n Promise.resolve(null).then(() => this._assignOptionValue(value));\n }\n\n // Implemented as part of ControlValueAccessor.\n registerOnChange(fn: (value: any) => {}): void {\n this._onChange = fn;\n }\n\n // Implemented as part of ControlValueAccessor.\n registerOnTouched(fn: () => {}) {\n this._onTouched = fn;\n }\n\n // Implemented as part of ControlValueAccessor.\n setDisabledState(isDisabled: boolean) {\n this._element.nativeElement.disabled = isDisabled;\n }\n\n _handleKeydown(event: KeyboardEvent): void {\n const keyCode = event.keyCode;\n const hasModifier = hasModifierKey(event);\n\n // Prevent the default action on all escape key presses. This is here primarily to bring IE\n // in line with other browsers. By default, pressing escape on IE will cause it to revert\n // the input value to the one that it had on focus, however it won't dispatch any events\n // which means that the model value will be out of sync with the view.\n if (keyCode === ESCAPE && !hasModifier) {\n event.preventDefault();\n }\n\n this._valueOnLastKeydown = this._element.nativeElement.value;\n\n if (this.activeOption && keyCode === ENTER && this.panelOpen && !hasModifier) {\n this.activeOption._selectViaInteraction();\n this._resetActiveItem();\n event.preventDefault();\n } else if (this.autocomplete) {\n const prevActiveItem = this.autocomplete._keyManager.activeItem;\n const isArrowKey = keyCode === UP_ARROW || keyCode === DOWN_ARROW;\n\n if (keyCode === TAB || (isArrowKey && !hasModifier && this.panelOpen)) {\n this.autocomplete._keyManager.onKeydown(event);\n } else if (isArrowKey && this._canOpen()) {\n this._openPanelInternal(this._valueOnLastKeydown);\n }\n\n if (isArrowKey || this.autocomplete._keyManager.activeItem !== prevActiveItem) {\n this._scrollToOption(this.autocomplete._keyManager.activeItemIndex || 0);\n\n if (this.autocomplete.autoSelectActiveOption && this.activeOption) {\n if (!this._pendingAutoselectedOption) {\n this._valueBeforeAutoSelection = this._valueOnLastKeydown;\n }\n\n this._pendingAutoselectedOption = this.activeOption;\n this._assignOptionValue(this.activeOption.value);\n }\n }\n }\n }\n\n _handleInput(event: Event): void {\n const target = event.target as HTMLInputElement;\n let value: number | string | null = target.value;\n\n // Based on `NumberValueAccessor` from forms.\n if (target.type === 'number') {\n value = value === '' ? null : parseFloat(value);\n }\n\n // If the input has a placeholder, IE will fire the `input` event on page load,\n // focus and blur, in addition to when the user actually changed the value. To\n // filter out all of the extra events, we save the value on focus and between\n // `input` events, and we check whether it changed.\n // See: https://connect.microsoft.com/IE/feedback/details/885747/\n if (this._previousValue !== value) {\n this._previousValue = value;\n this._pendingAutoselectedOption = null;\n\n // If selection is required we don't write to the CVA while the user is typing.\n // At the end of the selection either the user will have picked something\n // or we'll reset the value back to null.\n if (!this.autocomplete || !this.autocomplete.requireSelection) {\n this._onChange(value);\n }\n this._inputValue.next(target.value);\n\n if (!value) {\n this._clearPreviousSelectedOption(null, false);\n } else if (this.panelOpen && !this.autocomplete.requireSelection) {\n // Note that we don't reset this when `requireSelection` is enabled,\n // because the option will be reset when the panel is closed.\n const selectedOption = this.autocomplete.options?.find((option) => option.selected);\n\n if (selectedOption) {\n const display = this._getDisplayValue(selectedOption.value);\n\n if (value !== display) {\n selectedOption.deselect(false);\n }\n }\n }\n\n if (this._canOpen() && this._document.activeElement === event.target) {\n // When the `input` event fires, the input's value will have already changed. This means\n // that if we take the `this._element.nativeElement.value` directly, it'll be one keystroke\n // behind. This can be a problem when the user selects a value, changes a character while\n // the input still has focus and then clicks away (see #28432). To work around it, we\n // capture the value in `keydown` so we can use it here.\n const valueOnAttach = this._valueOnLastKeydown ?? this._element.nativeElement.value;\n this._valueOnLastKeydown = null;\n this._openPanelInternal(valueOnAttach);\n }\n }\n }\n\n /**\n * Note: we use `focusin`, as opposed to `focus`, in order to open the panel\n * a little earlier. This avoids issues where IE delays the focusing of the input.\n */\n _handleFocus(): void {\n if (!this._canOpenOnNextFocus) {\n this._canOpenOnNextFocus = true;\n } else if (this._canOpen()) {\n this._previousValue = this._element.nativeElement.value;\n this._attachOverlay(this._previousValue);\n }\n }\n\n _handleClick(): void {\n if (this._canOpen() && !this.panelOpen) {\n this._openPanelInternal();\n }\n }\n\n /**\n * Update width of the autocomplete panel.\n */\n _updateSize() {\n this._overlayRef?.updateSize({ width: this._getPanelWidth() });\n }\n\n /**\n * This method listens to a stream of panel closing actions and resets the\n * stream every time the option list changes.\n */\n private _subscribeToClosingActions(): Subscription {\n const initialRender = new Observable((subscriber) => {\n afterNextRender(\n () => {\n if (!this._componentDestroyed) {\n subscriber.next();\n }\n },\n { injector: this._injector },\n );\n });\n const optionChanges = this.autocomplete.options.changes.pipe(\n tap(() => this._positionStrategy.reapplyLastPosition()),\n // Defer emitting to the stream until the next tick, because changing\n // bindings in here will cause \"changed after checked\" errors.\n delay(0),\n );\n\n // When the options are initially rendered, and when the option list changes...\n return (\n merge(initialRender, optionChanges)\n .pipe(\n // create a new stream of panelClosingActions, replacing any previous streams\n // that were created, and flatten it so our stream only emits closing events...\n switchMap(() =>\n this._zone.run(() => {\n // `afterNextRender` always runs outside of the Angular zone, thus we have to re-enter\n // the Angular zone. This will lead to change detection being called outside of the Angular\n // zone and the `autocomplete.opened` will also emit outside of the Angular.\n const wasOpen = this.panelOpen;\n this._resetActiveItem();\n this._updatePanelState();\n this._changeDetectorRef.detectChanges();\n\n if (this.panelOpen) {\n // Fix to avoid scrolling to the top if a new element is added.\n // This happens because our overlay has a dynamic height (different from @angular/material).\n // When the _resetBoundingBoxStyles() function in the FlexibleConnectedPositionStrategy\n // is called, the element is reset to full height and scaled back afterwards.\n // During this the scroll position gets lost.\n //\n // An alternative to this hack would be to either use a maxHeight property for our\n // overlay or to fix this in angular/components.\n const scrollTop = this.autocomplete.panel.nativeElement.scrollTop;\n this._overlayRef!.updatePosition();\n this.autocomplete.panel.nativeElement.scrollTop = scrollTop;\n }\n\n if (wasOpen !== this.panelOpen) {\n // If the `panelOpen` state changed, we need to make sure to emit the `opened` or\n // `closed` event, because we may not have emitted it. This can happen\n // - if the users opens the panel and there are no options, but the\n // options come in slightly later or as a result of the value changing,\n // - if the panel is closed after the user entered a string that did not match any\n // of the available options,\n // - if a valid string is entered after an invalid one.\n if (this.panelOpen) {\n this._emitOpened();\n } else {\n this.autocomplete.closed.emit();\n }\n }\n\n return this.panelClosingActions;\n }),\n ),\n // when the first closing event occurs...\n take(1),\n )\n // set the value, close the panel, and complete.\n .subscribe((event) => this._setValueAndClose(event))\n );\n }\n\n /**\n * Emits the opened event once it's known that the panel will be shown and stores\n * the state of the trigger right before the opening sequence was finished.\n */\n private _emitOpened() {\n this.autocomplete.opened.emit();\n }\n\n /** Destroys the autocomplete suggestion panel. */\n private _destroyPanel(): void {\n if (this._overlayRef) {\n this.closePanel();\n this._overlayRef.dispose();\n this._overlayRef = null;\n }\n }\n\n /** Given a value, returns the string that should be shown within the input. */\n private _getDisplayValue(value: T): T | string {\n const autocomplete = this.autocomplete;\n return autocomplete && autocomplete.displayWith ? autocomplete.displayWith(value) : value;\n }\n\n private _assignOptionValue(value: any): void {\n const toDisplay = this._getDisplayValue(value);\n\n if (value == null) {\n this._clearPreviousSelectedOption(null, false);\n }\n\n // Simply falling back to an empty string if the display value is falsy does not work properly.\n // The display value can also be the number zero and shouldn't fall back to an empty string.\n this._updateNativeInputValue(toDisplay != null ? toDisplay : '');\n }\n\n private _updateNativeInputValue(value: string): void {\n // We want to clear the previous selection if our new value is falsy. e.g: reactive form field\n // being reset.\n if (!value) {\n this._clearPreviousSelectedOption(null, false);\n }\n\n // If it's used within a `SbbFormField`, we should set it through the property so it can go\n // through change detection.\n if (this._formField && this._formField._control) {\n this._formField._control.value = value;\n } else {\n this._element.nativeElement.value = value;\n }\n\n this._previousValue = value;\n this._inputValue.next(value);\n }\n\n /**\n * This method closes the panel, and if a value is specified, also sets the associated\n * control to that value. It will also mark the control as dirty if this interaction\n * stemmed from the user.\n */\n private _setValueAndClose(event: SbbOptionSelectionChange | null): void {\n const panel = this.autocomplete;\n const toSelect = event ? event.source : this._pendingAutoselectedOption;\n\n if (toSelect) {\n this._clearPreviousSelectedOption(toSelect);\n this._assignOptionValue(toSelect.value);\n this._onChange(toSelect.value);\n panel._emitSelectEvent(toSelect);\n this._element.nativeElement.focus();\n } else if (\n panel.requireSelection &&\n this._element.nativeElement.value !== this._valueOnAttach\n ) {\n this._clearPreviousSelectedOption(null);\n this._assignOptionValue(null);\n this._onChange(null);\n }\n\n this.closePanel();\n }\n\n /**\n * Clear any previous selected option and emit a selection change event for this option.\n */\n private _clearPreviousSelectedOption(skip: SbbOption | null, emitEvent?: boolean) {\n // Null checks are necessary here, because the autocomplete\n // or its options may not have been assigned yet.\n this.autocomplete?.options?.forEach((option) => {\n if (option !== skip && option.selected) {\n option.deselect(emitEvent);\n }\n });\n }\n\n private _openPanelInternal(valueOnAttach = this._element.nativeElement.value) {\n this._attachOverlay(valueOnAttach);\n }\n\n private _attachOverlay(valueOnAttach: string): void {\n if (!this.autocomplete && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n throw getSbbAutocompleteMissingPanelError();\n }\n\n let overlayRef = this._overlayRef;\n\n if (!overlayRef) {\n this._portal = new TemplatePortal(this.autocomplete.template, this._viewContainerRef, {\n id: this._formField?.getLabelId(),\n });\n overlayRef = this._overlay.create(this._getOverlayConfig());\n this._overlayRef = overlayRef;\n\n if (this._positionStrategy) {\n this._positionSubscription.unsubscribe();\n this._positionSubscription = combineLatest([\n this._positionStrategy.positionChanges,\n this.autocomplete._showPanel,\n ]).subscribe(([position, showPanel]) => {\n if (this.autocomplete.panel && showPanel) {\n this._getConnectedElement().nativeElement.classList.add('sbb-input-with-open-panel');\n\n if (position.connectionPair.originY === 'top') {\n this.autocomplete.panel.nativeElement.classList.add('sbb-panel-above');\n this._getConnectedElement().nativeElement.classList.add(\n 'sbb-input-with-open-panel-above',\n );\n } else {\n this.autocomplete.panel.nativeElement.classList.remove('sbb-panel-above');\n this._getConnectedElement().nativeElement.classList.remove(\n 'sbb-input-with-open-panel-above',\n );\n }\n }\n });\n }\n\n this._viewportSubscription = this._viewportRuler.change().subscribe(() => {\n if (this.panelOpen && overlayRef) {\n overlayRef.updateSize({ width: this._getPanelWidth() });\n }\n });\n } else {\n // Update the trigger, panel width and direction, in case anything has changed.\n this._positionStrategy.setOrigin(this._getConnectedElement());\n overlayRef.updateSize({ width: this._getPanelWidth() });\n }\n\n if (overlayRef && !overlayRef.hasAttached()) {\n overlayRef.attach(this._portal);\n this._valueOnAttach = valueOnAttach;\n this._valueOnLastKeydown = null;\n this._closingActionsSubscription = this._subscribeToClosingActions();\n }\n\n const wasOpen = this.panelOpen;\n\n this.autocomplete._isOpen = this._overlayAttached = true;\n this._updatePanelState();\n this._applyModalPanelOwnership();\n\n // We need to do an extra `panelOpen` check in here, because the\n // autocomplete won't be shown if there are no options.\n if (this.panelOpen && wasOpen !== this.panelOpen) {\n this._emitOpened();\n }\n }\n\n /** Handles keyboard events coming from the overlay panel. */\n private _handlePanelKeydown = (event: KeyboardEvent) => {\n // Close when pressing ESCAPE or ALT + UP_ARROW, based on the a11y guidelines.\n // See: https://www.w3.org/TR/wai-aria-practices-1.1/#textbox-keyboard-interaction\n if (\n (event.keyCode === ESCAPE && !hasModifierKey(event)) ||\n (event.keyCode === UP_ARROW && hasModifierKey(event, 'altKey'))\n ) {\n // If the user had typed something in before we autoselected an option, and they decided\n // to cancel the selection, restore the input value to the one they had typed in.\n if (this._pendingAutoselectedOption) {\n this._updateNativeInputValue(this._valueBeforeAutoSelection ?? '');\n this._pendingAutoselectedOption = null;\n }\n this._closeKeyEventStream.next();\n this._resetActiveItem();\n // We need to stop propagation, otherwise the event will eventually\n // reach the input itself and cause the overlay to be reopened.\n event.stopPropagation();\n event.preventDefault();\n }\n };\n\n /** Updates the panel's visibility state and any trigger state tied to id. */\n private _updatePanelState() {\n this.autocomplete._setVisibility();\n\n // Note that here we subscribe and unsubscribe based on the panel's visiblity state,\n // because the act of subscribing will prevent events from reaching other overlays and\n // we don't want to block the events if there are no options.\n if (this.panelOpen) {\n const overlayRef = this._overlayRef!;\n\n if (!this._keydownSubscription) {\n // Use the `keydownEvents` in order to take advantage of\n // the overlay event targeting provided by the CDK overlay.\n this._keydownSubscription = overlayRef.keydownEvents().subscribe(this._handlePanelKeydown);\n }\n\n if (!this._outsideClickSubscription) {\n // Subscribe to the pointer events stream so that it doesn't get picked up by other overlays.\n // TODO(crisbeto): we should switch `_getOutsideClickStream` eventually to use this stream,\n // but the behvior isn't exactly the same and it ends up breaking some internal tests.\n this._outsideClickSubscription = overlayRef.outsidePointerEvents().subscribe();\n }\n } else {\n this._keydownSubscription?.unsubscribe();\n this._outsideClickSubscription?.unsubscribe();\n this._keydownSubscription = this._outsideClickSubscription = null;\n }\n }\n\n private _getOverlayConfig(): OverlayConfig {\n return new OverlayConfig({\n positionStrategy: this._getOverlayPosition(),\n scrollStrategy: this._scrollStrategy(),\n width: this._getPanelWidth(),\n panelClass: coerceStringArray(this._defaults?.overlayPanelClass).concat('sbb-overlay-panel'),\n minHeight: 0, // Enables scrolling\n });\n }\n\n private _getOverlayPosition(): PositionStrategy {\n const strategy = this._overlay\n .position()\n .flexibleConnectedTo(this._getConnectedElement())\n .withFlexibleDimensions(true)\n .withPush(false);\n\n this._setStrategyPositions(strategy);\n this._positionStrategy = strategy;\n return strategy;\n }\n\n /** Sets the positions on a position strategy based on the directive's input state. */\n private _setStrategyPositions(positionStrategy: FlexibleConnectedPositionStrategy) {\n // Note that we provide horizontal fallback positions, even though by default the dropdown\n // width matches the input, because consumers can override the width. See #18854.\n const belowPositions: ConnectedPosition[] = [\n { originX: 'start', originY: 'bottom', overlayX: 'start', overlayY: 'top' },\n { originX: 'end', originY: 'bottom', overlayX: 'end', overlayY: 'top' },\n ];\n\n // The overlay edge connected to the trigger should have squared corners, while\n // the opposite end has rounded corners. We apply a CSS class to swap the\n // border-radius based on the overlay position.\n const panelClass = this._aboveClass;\n const abovePositions: ConnectedPosition[] = [\n { originX: 'start', originY: 'top', overlayX: 'start', overlayY: 'bottom', panelClass },\n { originX: 'end', originY: 'top', overlayX: 'end', overlayY: 'bottom', panelClass },\n ];\n\n let positions: ConnectedPosition[];\n\n if (this.position === 'above') {\n positions = abovePositions;\n } else if (this.position === 'below') {\n positions = belowPositions;\n } else {\n positions = [...belowPositions, ...abovePositions];\n }\n\n positionStrategy.withPositions(positions);\n }\n\n private _getConnectedElement(): ElementRef {\n if (this.connectedTo) {\n return this.connectedTo.elementRef;\n }\n\n return this._formField ? this._formField.getConnectedOverlayOrigin() : this._element;\n }\n\n private _getPanelWidth(): number | string {\n return this.autocomplete.panelWidth || this._getHostWidth();\n }\n\n /** Returns the width of the input element, so the panel width can match it. */\n private _getHostWidth(): number {\n return this._getConnectedElement().nativeElement.getBoundingClientRect().width;\n }\n\n /**\n * Resets the active item to -1 so arrow events will activate the\n * correct options, or to 0 if the consumer opted into it.\n */\n private _resetActiveItem(): void {\n const autocomplete = this.autocomplete;\n\n if (autocomplete.autoActiveFirstOption) {\n // Note that we go through `setFirstItemActive`, rather than `setActiveItem(0)`, because\n // the former will find the next enabled option, if the first one is disabled.\n autocomplete._keyManager.setFirstItemActive();\n } else {\n autocomplete._keyManager.setActiveItem(-1);\n }\n }\n\n /** Determines whether the panel can be opened. */\n private _canOpen(): boolean {\n const element = this._element.nativeElement;\n return !element.readOnly && !element.disabled && !this.autocompleteDisabled;\n }\n\n /** Use defaultView of injected document if available or fallback to global window reference */\n private _getWindow(): Window {\n return this._document?.defaultView || window;\n }\n\n /** Scrolls to a particular option in the list. */\n private _scrollToOption(index: number): void {\n // Given that we are not actually focusing active options, we must manually adjust scroll\n // to reveal options below the fold. First, we find the offset of the option from the top\n // of the panel. If that offset is below the fold, the new scrollTop will be the offset -\n // the panel height + the option height, so the active option will be just visible at the\n // bottom of the panel. If that offset is above the top of the visible panel, the new scrollTop\n // will become the offset. If that offset is visible within the panel already, the scrollTop is\n // not adjusted.\n const autocomplete = this.autocomplete;\n const labelCount = countGroupLabelsBeforeOption(\n index,\n autocomplete.options,\n autocomplete.optionGroups,\n );\n\n if (index === 0 && labelCount === 1) {\n // If we've got one group label before the option and we're at the top option,\n // scroll the list to the top. This is better UX than scrolling the list to the\n // top of the option, because it allows the user to read the top group's label.\n autocomplete._setScrollTop(0);\n } else if (autocomplete.panel) {\n const option = autocomplete.options.toArray()[index];\n\n if (option) {\n const element = option._getHostElement();\n const newScrollPosition = getOptionScrollPosition(\n element.offsetTop,\n element.offsetHeight,\n autocomplete._getScrollTop(),\n autocomplete.panel.nativeElement.offsetHeight,\n );\n\n autocomplete._setScrollTop(newScrollPosition);\n }\n }\n }\n\n /**\n * Track which modal we have modified the `aria-owns` attribute of. When the combobox trigger is\n * inside an aria-modal, we apply aria-owns to the parent modal with the `id` of the options\n * panel. Track the modal we have changed so we can undo the changes on destroy.\n */\n private _trackedModal: Element | null = null;\n\n /**\n * If the autocomplete trigger is inside of an `aria-modal` element, connect\n * that modal to the options panel with `aria-owns`.\n *\n * For some browser + screen reader combinations, when navigation is inside\n * of an `aria-modal` element, the screen reader treats everything outside\n * of that modal as hidden or invisible.\n *\n * This causes a problem when the combobox trigger is _inside_ of a modal, because the\n * options panel is rendered _outside_ of that modal, preventing screen reader navigation\n * from reaching the panel.\n *\n * We can work around this issue by applying `aria-owns` to the modal with the `id` of\n * the options panel. This effectively communicates to assistive technology that the\n * options panel is part of the same interaction as the modal.\n *\n * At time of this writing, this issue is present in VoiceOver.\n * See https://github.com/angular/components/issues/20694\n */\n private _applyModalPanelOwnership() {\n // TODO(http://github.com/angular/components/issues/26853): consider de-duplicating this with\n // the `LiveAnnouncer` and any other usages.\n //\n // Note that the selector here is limited to CDK overlays at the moment in order to reduce the\n // section of the DOM we need to look through. This should cover all the cases we support, but\n // the selector can be expanded if it turns out to be too narrow.\n const modal = this._element.nativeElement.closest(\n 'body > .cdk-overlay-container [aria-modal=\"true\"]',\n );\n\n if (!modal) {\n // Most commonly, the autocomplete trigger is not inside a modal.\n return;\n }\n\n const panelId = this.autocomplete.id;\n\n if (this._trackedModal) {\n removeAriaReferencedId(this._trackedModal, 'aria-owns', panelId);\n }\n\n addAriaReferencedId(modal, 'aria-owns', panelId);\n this._trackedModal = modal;\n }\n\n /** Clears the references to the listbox overlay element from the modal it was added to. */\n private _clearFromModal() {\n if (this._trackedModal) {\n const panelId = this.autocomplete.id;\n\n removeAriaReferencedId(this._trackedModal, 'aria-owns', panelId);\n this._trackedModal = null;\n }\n }\n}\n","import { A11yModule } from '@angular/cdk/a11y';\nimport { OverlayModule } from '@angular/cdk/overlay';\nimport { NgModule } from '@angular/core';\nimport { SbbCommonModule, SbbOptionModule } from '@sbb-esta/angular/core';\n\nimport { SbbAutocomplete } from './autocomplete';\nimport { SbbAutocompleteOrigin } from './autocomplete-origin';\nimport { SbbAutocompleteTrigger } from './autocomplete-trigger';\n\n@NgModule({\n imports: [\n A11yModule,\n OverlayModule,\n SbbCommonModule,\n SbbOptionModule,\n SbbAutocomplete,\n SbbAutocompleteOrigin,\n SbbAutocompleteTrigger,\n ],\n exports: [\n SbbOptionModule,\n OverlayModule,\n SbbAutocomplete,\n SbbAutocompleteOrigin,\n SbbAutocompleteTrigger,\n ],\n})\nexport class SbbAutocompleteModule 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