@taiga-ui/kit
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Taiga UI Angular main components kit
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{"version":3,"file":"taiga-ui-kit-directives-data-list-dropdown-manager.mjs","sources":["../../../projects/kit/directives/data-list-dropdown-manager/data-list-dropdown-manager.directive.ts","../../../projects/kit/directives/data-list-dropdown-manager/taiga-ui-kit-directives-data-list-dropdown-manager.ts"],"sourcesContent":["import {\n type AfterViewInit,\n contentChildren,\n DestroyRef,\n Directive,\n ElementRef,\n inject,\n} from '@angular/core';\nimport {takeUntilDestroyed, toObservable} from '@angular/core/rxjs-interop';\nimport {tuiPreventDefault, tuiTypedFromEvent} from '@taiga-ui/cdk/observables';\nimport {tuiGetClosestFocusable} from '@taiga-ui/cdk/utils/focus';\nimport {TuiDropdownDirective} from '@taiga-ui/core/portals/dropdown';\nimport {\n debounceTime,\n EMPTY,\n filter,\n map,\n merge,\n shareReplay,\n switchMap,\n take,\n tap,\n} from 'rxjs';\n\n@Directive({selector: 'tui-data-list[tuiDataListDropdownManager]'})\nexport class TuiDataListDropdownManager implements AfterViewInit {\n private readonly destroyRef = inject(DestroyRef);\n\n private readonly dropdowns = contentChildren(TuiDropdownDirective, {\n descendants: true,\n });\n\n private readonly els = contentChildren(TuiDropdownDirective, {\n read: ElementRef,\n descendants: true,\n });\n\n private readonly elements$ = toObservable(this.els).pipe(\n map((array) => array.map(({nativeElement}) => nativeElement)),\n shareReplay({bufferSize: 1, refCount: true}),\n );\n\n private readonly right$ = this.elements$.pipe(\n switchMap((elements) =>\n merge(\n ...elements.map((element, index) =>\n tuiTypedFromEvent(element, 'keydown').pipe(\n filter(({key}) => key === 'ArrowRight'),\n tuiPreventDefault(),\n map(() => index),\n ),\n ),\n ),\n ),\n );\n\n private readonly immediate$ = this.elements$.pipe(\n switchMap((elements) =>\n merge(\n ...elements.map((element, index) =>\n tuiTypedFromEvent(element, 'click').pipe(map(() => index)),\n ),\n ),\n ),\n );\n\n private readonly debounce$ = this.elements$.pipe(\n switchMap((elements) =>\n merge(\n ...elements.map((element, index) =>\n merge(\n tuiTypedFromEvent(element, 'focus'),\n tuiTypedFromEvent(element, 'blur'),\n ).pipe(\n filter(({relatedTarget}) =>\n this.notInDropdown(relatedTarget, index),\n ),\n map(({type}) => (type === 'focus' ? index : Number.NaN)),\n ),\n ),\n ),\n ),\n debounceTime(300),\n );\n\n public ngAfterViewInit(): void {\n this.right$.pipe(takeUntilDestroyed(this.destroyRef)).subscribe((index) => {\n this.tryToFocus(index);\n });\n\n merge(this.immediate$, this.debounce$)\n .pipe(\n switchMap((active) => {\n this.dropdowns().forEach((dropdown, index) => {\n dropdown.toggle(index === active);\n });\n\n const element = this.els()[active];\n const dropdown = this.dropdowns()[active];\n const ref = dropdown?.ref();\n\n if (!element || !dropdown || !ref) {\n return EMPTY;\n }\n\n const {nativeElement} = ref.location;\n\n const mouseEnter$ = tuiTypedFromEvent(\n nativeElement,\n 'mouseenter',\n ).pipe(take(1));\n\n const esc$ = merge(\n tuiTypedFromEvent(element.nativeElement, 'keydown'),\n tuiTypedFromEvent(nativeElement, 'keydown'),\n ).pipe(filter(({key}) => key === 'Escape'));\n\n return merge(mouseEnter$, esc$).pipe(\n tap((event) => {\n if (dropdown.ref()) {\n event.stopPropagation();\n }\n\n element.nativeElement.focus();\n dropdown.toggle('offsetX' in event);\n }),\n );\n }),\n takeUntilDestroyed(this.destroyRef),\n )\n .subscribe();\n }\n\n private notInDropdown(element: EventTarget | null, index: number): boolean {\n return !this.dropdowns()[index]?.ref()?.location.nativeElement.contains(element);\n }\n\n private tryToFocus(index: number): void {\n const content = this.dropdowns()[index]?.ref()?.location.nativeElement;\n\n if (!content) {\n return;\n }\n\n // First item is focus trap\n const focusTrap = tuiGetClosestFocusable({initial: content, root: content});\n\n const item = tuiGetClosestFocusable({\n initial: focusTrap || content,\n root: content,\n });\n\n item?.focus();\n }\n}\n","/**\n * Generated bundle index. 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