@taiga-ui/cdk
Version:
Base library for creating Angular components and applications using Taiga UI principles regarding of actual visual appearance
54 lines • 13.3 kB
JavaScript
import { DOCUMENT } from '@angular/common';
import { inject, NgZone } from '@angular/core';
import { WA_WINDOW } from '@ng-web-apis/common';
import { tuiTypedFromEvent, tuiZonefreeScheduler } from '@taiga-ui/cdk/observables';
import { tuiCreateTokenFromFactory, tuiGetActualTarget, tuiGetDocumentOrShadowRoot, tuiIsNativeMouseFocusable, } from '@taiga-ui/cdk/utils';
import { distinctUntilChanged, filter, map, merge, of, repeat, share, startWith, switchMap, take, takeUntil, timer, withLatestFrom, } from 'rxjs';
import { TUI_REMOVED_ELEMENT } from './removed-element';
// Checks if focusout event should be considered leaving active zone
function isValidFocusout(target, removedElement = null) {
return (
// Not due to switching tabs/going to DevTools
tuiGetDocumentOrShadowRoot(target).activeElement !== target &&
// Not due to button/input becoming disabled or under disabled fieldset
!target.matches(':disabled') &&
// Not due to element being removed from DOM
!removedElement?.contains(target) &&
// Not due to scrollable element became non-scrollable
tuiIsNativeMouseFocusable(target));
}
function shadowRootActiveElement(root) {
return merge(tuiTypedFromEvent(root, 'focusin').pipe(map(({ target }) => target)), tuiTypedFromEvent(root, 'focusout').pipe(filter(({ target, relatedTarget }) => !!relatedTarget && isValidFocusout(target)), map(({ relatedTarget }) => relatedTarget)));
}
/**
* Active element on the document for ActiveZone
*/
export const TUI_ACTIVE_ELEMENT = tuiCreateTokenFromFactory(() => {
const removedElement$ = inject(TUI_REMOVED_ELEMENT);
const win = inject(WA_WINDOW);
const doc = inject(DOCUMENT);
const zone = inject(NgZone);
const focusout$ = tuiTypedFromEvent(win, 'focusout', { capture: true });
const focusin$ = tuiTypedFromEvent(win, 'focusin', { capture: true });
const blur$ = tuiTypedFromEvent(win, 'blur');
const mousedown$ = tuiTypedFromEvent(win, 'mousedown');
const mouseup$ = tuiTypedFromEvent(win, 'mouseup');
return merge(focusout$.pipe(takeUntil(mousedown$), repeat({ delay: () => mouseup$ }), withLatestFrom(removedElement$), filter(([event, removedElement]) => isValidFocusout(tuiGetActualTarget(event), removedElement)), map(([{ relatedTarget }]) => relatedTarget)), blur$.pipe(map(() => doc.activeElement), filter((element) => !!element?.matches('iframe'))), focusin$.pipe(switchMap((event) => {
const target = tuiGetActualTarget(event);
const root = tuiGetDocumentOrShadowRoot(target) || doc;
return root === doc
? of(target)
: shadowRootActiveElement(root).pipe(startWith(target));
})), mousedown$.pipe(switchMap((event) => {
const actualTargetInCurrentTime = tuiGetActualTarget(event);
return !doc.activeElement || doc.activeElement === doc.body
? of(actualTargetInCurrentTime)
: focusout$.pipe(take(1), map(
/**
* Do not use `map(() => tuiGetActualTarget(event))`
* because we have different result in runtime
*/
() => actualTargetInCurrentTime), takeUntil(timer(0, tuiZonefreeScheduler(zone))));
}))).pipe(distinctUntilChanged(), share());
});
//# 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{DOCUMENT} from '@angular/common';\nimport {inject, NgZone} from '@angular/core';\nimport {WA_WINDOW} from '@ng-web-apis/common';\nimport {tuiTypedFromEvent, tuiZonefreeScheduler} from '@taiga-ui/cdk/observables';\nimport {\n    tuiCreateTokenFromFactory,\n    tuiGetActualTarget,\n    tuiGetDocumentOrShadowRoot,\n    tuiIsNativeMouseFocusable,\n} from '@taiga-ui/cdk/utils';\nimport type {Observable} from 'rxjs';\nimport {\n    distinctUntilChanged,\n    filter,\n    map,\n    merge,\n    of,\n    repeat,\n    share,\n    startWith,\n    switchMap,\n    take,\n    takeUntil,\n    timer,\n    withLatestFrom,\n} from 'rxjs';\n\nimport {TUI_REMOVED_ELEMENT} from './removed-element';\n\n// Checks if focusout event should be considered leaving active zone\nfunction isValidFocusout(target: any, removedElement: Element | null = null): boolean {\n    return (\n        // Not due to switching tabs/going to DevTools\n        tuiGetDocumentOrShadowRoot(target).activeElement !== target &&\n        // Not due to button/input becoming disabled or under disabled fieldset\n        !target.matches(':disabled') &&\n        // Not due to element being removed from DOM\n        !removedElement?.contains(target) &&\n        // Not due to scrollable element became non-scrollable\n        tuiIsNativeMouseFocusable(target)\n    );\n}\n\nfunction shadowRootActiveElement(root: Document): Observable<EventTarget | null> {\n    return merge(\n        tuiTypedFromEvent(root, 'focusin').pipe(map(({target}) => target)),\n        tuiTypedFromEvent(root, 'focusout').pipe(\n            filter(\n                ({target, relatedTarget}) => !!relatedTarget && isValidFocusout(target),\n            ),\n            map(({relatedTarget}) => relatedTarget),\n        ),\n    );\n}\n\n/**\n * Active element on the document for ActiveZone\n */\nexport const TUI_ACTIVE_ELEMENT = tuiCreateTokenFromFactory<\n    Observable<EventTarget | null>\n>(() => {\n    const removedElement$ = inject(TUI_REMOVED_ELEMENT);\n    const win = inject(WA_WINDOW);\n    const doc = inject(DOCUMENT);\n    const zone = inject(NgZone);\n    const focusout$ = tuiTypedFromEvent(win, 'focusout', {capture: true});\n    const focusin$ = tuiTypedFromEvent(win, 'focusin', {capture: true});\n    const blur$ = tuiTypedFromEvent(win, 'blur');\n    const mousedown$ = tuiTypedFromEvent(win, 'mousedown');\n    const mouseup$ = tuiTypedFromEvent(win, 'mouseup');\n\n    return merge(\n        focusout$.pipe(\n            takeUntil(mousedown$),\n            repeat({delay: () => mouseup$}),\n            withLatestFrom(removedElement$),\n            filter(([event, removedElement]) =>\n                isValidFocusout(tuiGetActualTarget(event), removedElement),\n            ),\n            map(([{relatedTarget}]) => relatedTarget),\n        ),\n        blur$.pipe(\n            map(() => doc.activeElement),\n            filter((element) => !!element?.matches('iframe')),\n        ),\n        focusin$.pipe(\n            switchMap((event) => {\n                const target = tuiGetActualTarget(event);\n                const root = tuiGetDocumentOrShadowRoot(target) || doc;\n\n                return root === doc\n                    ? of(target)\n                    : shadowRootActiveElement(root as Document).pipe(startWith(target));\n            }),\n        ),\n        mousedown$.pipe(\n            switchMap((event) => {\n                const actualTargetInCurrentTime = tuiGetActualTarget(event);\n\n                return !doc.activeElement || doc.activeElement === doc.body\n                    ? of(actualTargetInCurrentTime)\n                    : focusout$.pipe(\n                          take(1),\n                          map(\n                              /**\n                               * Do not use `map(() => tuiGetActualTarget(event))`\n                               * because we have different result in runtime\n                               */\n                              () => actualTargetInCurrentTime,\n                          ),\n                          takeUntil(timer(0, tuiZonefreeScheduler(zone))),\n                      );\n            }),\n        ),\n    ).pipe(distinctUntilChanged(), share());\n});\n"]}