@taiga-ui/core
Version:
Core library for creating Angular components and applications using Taiga UI
70 lines • 14.1 kB
JavaScript
import { DOCUMENT } from '@angular/common';
import { ContentChild, Directive, ElementRef, inject, Input } from '@angular/core';
import { toObservable } from '@angular/core/rxjs-interop';
import { TuiActiveZone } from '@taiga-ui/cdk/directives/active-zone';
import { tuiTypedFromEvent, tuiZoneOptimized } from '@taiga-ui/cdk/observables';
import { tuiGetActualTarget, tuiInjectElement, tuiIsElement, } from '@taiga-ui/cdk/utils/dom';
import { tuiAsDriver, TuiDriver } from '@taiga-ui/core/classes';
import { delay, distinctUntilChanged, filter, fromEvent, map, merge, of, share, startWith, switchMap, takeUntil, tap, } from 'rxjs';
import { TuiDropdownDirective } from './dropdown.directive';
import { TUI_DROPDOWN_HOVER_OPTIONS } from './dropdown-hover.options';
import { TuiDropdownOpen } from './dropdown-open.directive';
import * as i0 from "@angular/core";
class TuiDropdownHover extends TuiDriver {
constructor() {
super((subscriber) => this.stream$.subscribe(subscriber));
this.el = tuiInjectElement();
this.doc = inject(DOCUMENT);
this.options = inject(TUI_DROPDOWN_HOVER_OPTIONS);
this.activeZone = inject(TuiActiveZone);
this.open = inject(TuiDropdownOpen, { optional: true });
/**
* Dropdown can be removed not only via click/touch –
* swipe on mobile devices removes dropdown sheet without triggering new mouseover / mouseout events.
*/
this.dropdownExternalRemoval$ = toObservable(inject(TuiDropdownDirective).ref).pipe(filter((x) => !x && this.hovered));
this.stream$ = merge(this.dropdownExternalRemoval$.pipe(switchMap(() => tuiTypedFromEvent(this.doc, 'pointerdown').pipe(map(tuiGetActualTarget), delay(this.hideDelay), startWith(null), takeUntil(fromEvent(this.doc, 'mouseover'))))), tuiTypedFromEvent(this.doc, 'mouseover').pipe(map(tuiGetActualTarget)), tuiTypedFromEvent(this.doc, 'mouseout').pipe(map((e) => e.relatedTarget))).pipe(map((element) => tuiIsElement(element) && this.isHovered(element)), distinctUntilChanged(), switchMap((v) => of(v).pipe(delay(v ? this.showDelay : this.hideDelay))), tuiZoneOptimized(), tap((hovered) => {
this.hovered = hovered;
this.open?.toggle(hovered);
}), share());
this.showDelay = this.options.showDelay;
this.hideDelay = this.options.hideDelay;
this.hovered = false;
this.type = 'dropdown';
}
onClick(event) {
if (this.hovered && this.open) {
event.preventDefault();
}
}
isHovered(element) {
const host = this.dropdownHost?.nativeElement || this.el;
const hovered = host.contains(element);
const child = !this.el.contains(element) && this.activeZone.contains(element);
return hovered || child;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TuiDropdownHover, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.2.12", type: TuiDropdownHover, isStandalone: true, selector: "[tuiDropdownHover]", inputs: { showDelay: ["tuiDropdownShowDelay", "showDelay"], hideDelay: ["tuiDropdownHideDelay", "hideDelay"] }, host: { listeners: { "click.capture": "onClick($event)" } }, providers: [TuiActiveZone, tuiAsDriver(TuiDropdownHover)], queries: [{ propertyName: "dropdownHost", first: true, predicate: ["tuiDropdownHost"], descendants: true, read: ElementRef }], usesInheritance: true, ngImport: i0 }); }
}
export { TuiDropdownHover };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TuiDropdownHover, decorators: [{
type: Directive,
args: [{
standalone: true,
selector: '[tuiDropdownHover]',
providers: [TuiActiveZone, tuiAsDriver(TuiDropdownHover)],
host: {
'(click.capture)': 'onClick($event)',
},
}]
}], ctorParameters: function () { return []; }, propDecorators: { dropdownHost: [{
type: ContentChild,
args: ['tuiDropdownHost', { descendants: true, read: ElementRef }]
}], showDelay: [{
type: Input,
args: ['tuiDropdownShowDelay']
}], hideDelay: [{
type: Input,
args: ['tuiDropdownHideDelay']
}] } });
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{DOCUMENT} from '@angular/common';\nimport {ContentChild, Directive, ElementRef, inject, Input} from '@angular/core';\nimport {toObservable} from '@angular/core/rxjs-interop';\nimport {TuiActiveZone} from '@taiga-ui/cdk/directives/active-zone';\nimport {tuiTypedFromEvent, tuiZoneOptimized} from '@taiga-ui/cdk/observables';\nimport {\n    tuiGetActualTarget,\n    tuiInjectElement,\n    tuiIsElement,\n} from '@taiga-ui/cdk/utils/dom';\nimport {tuiAsDriver, TuiDriver} from '@taiga-ui/core/classes';\nimport {\n    delay,\n    distinctUntilChanged,\n    filter,\n    fromEvent,\n    map,\n    merge,\n    of,\n    share,\n    startWith,\n    switchMap,\n    takeUntil,\n    tap,\n} from 'rxjs';\n\nimport {TuiDropdownDirective} from './dropdown.directive';\nimport {TUI_DROPDOWN_HOVER_OPTIONS} from './dropdown-hover.options';\nimport {TuiDropdownOpen} from './dropdown-open.directive';\n\n@Directive({\n    standalone: true,\n    selector: '[tuiDropdownHover]',\n    providers: [TuiActiveZone, tuiAsDriver(TuiDropdownHover)],\n    host: {\n        '(click.capture)': 'onClick($event)',\n    },\n})\nexport class TuiDropdownHover extends TuiDriver {\n    @ContentChild('tuiDropdownHost', {descendants: true, read: ElementRef})\n    private readonly dropdownHost?: ElementRef<HTMLElement>;\n\n    private readonly el = tuiInjectElement();\n    private readonly doc = inject(DOCUMENT);\n    private readonly options = inject(TUI_DROPDOWN_HOVER_OPTIONS);\n    private readonly activeZone = inject(TuiActiveZone);\n    private readonly open = inject(TuiDropdownOpen, {optional: true});\n    /**\n     * Dropdown can be removed not only via click/touch –\n     * swipe on mobile devices removes dropdown sheet without triggering new mouseover / mouseout events.\n     */\n    private readonly dropdownExternalRemoval$ = toObservable(\n        inject(TuiDropdownDirective).ref,\n    ).pipe(filter((x) => !x && this.hovered));\n\n    private readonly stream$ = merge(\n        this.dropdownExternalRemoval$.pipe(\n            switchMap(() =>\n                tuiTypedFromEvent(this.doc, 'pointerdown').pipe(\n                    map(tuiGetActualTarget),\n                    delay(this.hideDelay),\n                    startWith(null),\n                    takeUntil(fromEvent(this.doc, 'mouseover')),\n                ),\n            ),\n        ),\n        tuiTypedFromEvent(this.doc, 'mouseover').pipe(map(tuiGetActualTarget)),\n        tuiTypedFromEvent(this.doc, 'mouseout').pipe(map((e) => e.relatedTarget)),\n    ).pipe(\n        map((element) => tuiIsElement(element) && this.isHovered(element)),\n        distinctUntilChanged(),\n        switchMap((v) => of(v).pipe(delay(v ? this.showDelay : this.hideDelay))),\n        tuiZoneOptimized(),\n        tap((hovered) => {\n            this.hovered = hovered;\n            this.open?.toggle(hovered);\n        }),\n        share(),\n    );\n\n    @Input('tuiDropdownShowDelay')\n    public showDelay = this.options.showDelay;\n\n    @Input('tuiDropdownHideDelay')\n    public hideDelay = this.options.hideDelay;\n\n    public hovered = false;\n\n    public readonly type = 'dropdown';\n\n    constructor() {\n        super((subscriber) => this.stream$.subscribe(subscriber));\n    }\n\n    protected onClick(event: MouseEvent): void {\n        if (this.hovered && this.open) {\n            event.preventDefault();\n        }\n    }\n\n    private isHovered(element: Element): boolean {\n        const host = this.dropdownHost?.nativeElement || this.el;\n        const hovered = host.contains(element);\n        const child = !this.el.contains(element) && this.activeZone.contains(element);\n\n        return hovered || child;\n    }\n}\n"]}