rt-tab-carousel
Version:
Angular tab carousel component
157 lines • 24.9 kB
JavaScript
import { Directive, Input, } from '@angular/core';
import { combineLatest, fromEvent, Observable, Subscription } from 'rxjs';
import { debounceTime, filter, first, startWith } from 'rxjs/operators';
import * as i0 from "@angular/core";
import * as i1 from "../services/rt-carousel.service";
class RtCarouselContainerDirective {
el;
renderer;
service;
cd;
scrollStep = 1;
uuidCarousel;
activeClass;
antiBounce = 5;
subscription = new Subscription();
firstDebounce = 1500;
constructor(el, renderer, service, cd) {
this.el = el;
this.renderer = renderer;
this.service = service;
this.cd = cd;
}
_selectedTab;
set selectedTab(value) {
this._selectedTab = value;
this.service.amountTabs(this.uuidCarousel).pipe(debounceTime(this.firstDebounce), first()).subscribe({
next: () => {
this.firstDebounce = 0;
this.service.selectTab(this.uuidCarousel, value);
},
});
}
ngOnInit() {
this.renderer.setStyle(this.el.nativeElement, 'display', 'flex');
this.renderer.setStyle(this.el.nativeElement, 'overflow', 'auto');
this.renderer.setStyle(this.el.nativeElement, 'z-index', '10');
this.renderer.setStyle(this.el.nativeElement, 'padding', '0 2px');
this.renderer.setStyle(this.el.nativeElement, 'align-items', 'center');
this.renderer.setStyle(this.el.nativeElement, 'gap', '6px');
this.renderer.setStyle(this.el.nativeElement, 'scrollbar-width', 'none');
this.renderer.addClass(this.el.nativeElement, 'rt-tab-carousel-container');
this.subscription.add(this.service.amountTabs(this.uuidCarousel)
.pipe(debounceTime(10))
.subscribe({
next: () => this.cd.detectChanges(),
}));
}
ngAfterViewInit() {
if (this.activeClass) {
this.service.setActiveClassTab(this.uuidCarousel, this.activeClass);
}
this.service.setScrollStep(this.uuidCarousel, this.scrollStep);
const style = this.renderer.createElement('style');
this.renderer.appendChild(this.el.nativeElement, style);
style.innerHTML = `::-webkit-scrollbar { width: 0; height: 0 }`;
this.service.amountTabs(this.uuidCarousel).pipe(debounceTime(1000), first()).subscribe({
next: () => {
this.initIndexes();
},
});
const resize$ = fromEvent(window, 'resize').pipe(startWith(null));
const scroll$ = fromEvent(this.el.nativeElement, 'scroll').pipe(startWith(null));
const mutationObserver$ = this.createMutationObserverObservable(this.el.nativeElement).pipe(startWith(null));
this.subscription.add(combineLatest([resize$, scroll$, mutationObserver$]).subscribe({
next: () => {
const currentItems = document.querySelectorAll(`.rt-carousel-tab-${this.uuidCarousel}`);
const scrollLeft = this.el.nativeElement.scrollLeft;
for (let i = 0; i < currentItems.length; i++) {
const child = currentItems[i];
if (child.offsetLeft - scrollLeft - this.el.nativeElement.offsetLeft + this.antiBounce >= 0) {
this.service.setLastVisibleIndex(this.uuidCarousel, i);
break;
}
}
for (let i = currentItems.length - 1; i >= 0; i--) {
const child = currentItems[i];
if (this.el.nativeElement.offsetLeft + this.el.nativeElement.offsetWidth >=
child.offsetLeft + child.offsetWidth - this.el.nativeElement.scrollLeft - this.antiBounce) {
this.service.setLastVisibleIndexEnd(this.uuidCarousel, i);
break;
}
}
},
}));
this.cd.detectChanges();
}
initIndexes() {
this.service
.tabs(this.uuidCarousel)
.pipe(filter(items => items && !!items.length), first())
.subscribe({
next: tabs => {
const currentItems = document.querySelectorAll(`.rt-carousel-tab-${this.uuidCarousel}`);
const scrollLeft = this.el.nativeElement.scrollLeft;
const firstTab = tabs[0].nativeElement;
const offsetLeft = firstTab.offsetLeft;
if (offsetLeft >= scrollLeft) {
this.service.setLastVisibleIndex(this.uuidCarousel, 0);
}
for (let i = currentItems.length - 1; i >= 0; i--) {
const child = currentItems[i];
if (this.el.nativeElement.offsetLeft + this.el.nativeElement.offsetWidth >=
child.offsetLeft + child.offsetWidth - this.el.nativeElement.scrollLeft - this.antiBounce) {
this.service.setLastVisibleIndexEnd(this.uuidCarousel, i);
break;
}
}
},
});
}
ngOnDestroy() {
const tabs = document.querySelectorAll(`.rt-carousel-tab-${this.uuidCarousel}`);
tabs.forEach(tab => {
tab.removeEventListener('scroll', () => {
});
tab.removeEventListener('click', () => {
});
});
this.service.destroyCarousel(this.uuidCarousel);
this.subscription.unsubscribe();
}
createMutationObserverObservable(target) {
return new Observable(observer => {
const observerInstance = new MutationObserver(mutationsList => {
observer.next(mutationsList);
});
observerInstance.observe(target, {
childList: true,
subtree: true,
});
return () => {
observerInstance.disconnect();
};
});
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.2", ngImport: i0, type: RtCarouselContainerDirective, deps: [{ token: i0.ElementRef }, { token: i0.Renderer2 }, { token: i1.RtCarouselService }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Directive });
static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.2", type: RtCarouselContainerDirective, selector: "[rtCarouselContainer]", inputs: { scrollStep: "scrollStep", uuidCarousel: "uuidCarousel", activeClass: "activeClass", antiBounce: "antiBounce", selectedTab: "selectedTab" }, ngImport: i0 });
}
export { RtCarouselContainerDirective };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.2", ngImport: i0, type: RtCarouselContainerDirective, decorators: [{
type: Directive,
args: [{
selector: '[rtCarouselContainer]',
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.Renderer2 }, { type: i1.RtCarouselService }, { type: i0.ChangeDetectorRef }]; }, propDecorators: { scrollStep: [{
type: Input
}], uuidCarousel: [{
type: Input,
args: [{ required: true }]
}], activeClass: [{
type: Input
}], antiBounce: [{
type: Input
}], selectedTab: [{
type: Input
}] } });
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{\n    AfterViewInit,\n    ChangeDetectorRef,\n    Directive,\n    ElementRef,\n    Input,\n    OnDestroy,\n    OnInit,\n    Renderer2,\n} from '@angular/core';\nimport {combineLatest, fromEvent, Observable, Subscription} from 'rxjs';\nimport {debounceTime, filter, first, startWith} from 'rxjs/operators';\nimport {RtCarouselService} from '../services/rt-carousel.service';\n\n@Directive({\n    selector: '[rtCarouselContainer]',\n})\nexport class RtCarouselContainerDirective implements OnInit, AfterViewInit, OnDestroy {\n    @Input() scrollStep = 1;\n    @Input({required: true}) uuidCarousel!: string;\n    @Input() activeClass?: string;\n    @Input() antiBounce = 5;\n\n    private readonly subscription = new Subscription();\n    private firstDebounce = 1500;\n\n    constructor(private el: ElementRef, private renderer: Renderer2, private service: RtCarouselService, private cd: ChangeDetectorRef) {\n    }\n\n    private _selectedTab?: number;\n\n    @Input() set selectedTab(value: number) {\n        this._selectedTab = value;\n\n        this.service.amountTabs(this.uuidCarousel).pipe(debounceTime(this.firstDebounce), first()).subscribe({\n            next: () => {\n                this.firstDebounce = 0;\n                this.service.selectTab(this.uuidCarousel, value);\n            },\n        });\n    }\n\n    ngOnInit(): void {\n        this.renderer.setStyle(this.el.nativeElement, 'display', 'flex');\n        this.renderer.setStyle(this.el.nativeElement, 'overflow', 'auto');\n        this.renderer.setStyle(this.el.nativeElement, 'z-index', '10');\n        this.renderer.setStyle(this.el.nativeElement, 'padding', '0 2px');\n        this.renderer.setStyle(this.el.nativeElement, 'align-items', 'center');\n        this.renderer.setStyle(this.el.nativeElement, 'gap', '6px');\n        this.renderer.setStyle(this.el.nativeElement, 'scrollbar-width', 'none');\n        this.renderer.addClass(this.el.nativeElement, 'rt-tab-carousel-container');\n\n\n        this.subscription.add(\n            this.service.amountTabs(this.uuidCarousel)\n                .pipe(debounceTime(10))\n                .subscribe({\n                    next: () => this.cd.detectChanges(),\n                }),\n        );\n    }\n\n    ngAfterViewInit(): void {\n        if (this.activeClass) {\n            this.service.setActiveClassTab(this.uuidCarousel, this.activeClass);\n        }\n        this.service.setScrollStep(this.uuidCarousel, this.scrollStep);\n        const style = this.renderer.createElement('style');\n        this.renderer.appendChild(this.el.nativeElement, style);\n        style.innerHTML = `::-webkit-scrollbar { width: 0; height: 0 }`;\n\n\n        this.service.amountTabs(this.uuidCarousel).pipe(debounceTime(1000), first()).subscribe({\n            next: () => {\n                this.initIndexes();\n            },\n        });\n\n\n        const resize$ = fromEvent(window, 'resize').pipe(startWith(null));\n        const scroll$ = fromEvent(this.el.nativeElement, 'scroll').pipe(startWith(null));\n\n\n        const mutationObserver$ = this.createMutationObserverObservable(this.el.nativeElement).pipe(startWith(null));\n\n\n        this.subscription.add(combineLatest([resize$, scroll$, mutationObserver$]).subscribe({\n            next: () => {\n                const currentItems = document.querySelectorAll(`.rt-carousel-tab-${this.uuidCarousel}`);\n                const scrollLeft = this.el.nativeElement.scrollLeft;\n\n                for (let i = 0; i < currentItems.length; i++) {\n                    const child = currentItems[i] as HTMLElement;\n                    if (child.offsetLeft - scrollLeft - this.el.nativeElement.offsetLeft + this.antiBounce >= 0) {\n                        this.service.setLastVisibleIndex(this.uuidCarousel, i);\n                        break;\n                    }\n                }\n\n                for (let i = currentItems.length - 1; i >= 0; i--) {\n                    const child = currentItems[i] as HTMLElement;\n                    if (\n                        this.el.nativeElement.offsetLeft + this.el.nativeElement.offsetWidth >=\n                        child.offsetLeft + child.offsetWidth - this.el.nativeElement.scrollLeft - this.antiBounce\n                    ) {\n                        this.service.setLastVisibleIndexEnd(this.uuidCarousel, i);\n                        break;\n                    }\n                }\n            },\n        }));\n\n\n        this.cd.detectChanges();\n    }\n\n    initIndexes(): void {\n        this.service\n            .tabs(this.uuidCarousel)\n            .pipe(\n                filter(items => items && !!items.length),\n                first(),\n            )\n            .subscribe({\n                next: tabs => {\n                    const currentItems = document.querySelectorAll(`.rt-carousel-tab-${this.uuidCarousel}`);\n                    const scrollLeft = this.el.nativeElement.scrollLeft;\n                    const firstTab = tabs[0].nativeElement as HTMLElement;\n                    const offsetLeft = firstTab.offsetLeft;\n                    if (offsetLeft >= scrollLeft) {\n                        this.service.setLastVisibleIndex(this.uuidCarousel, 0);\n                    }\n\n                    for (let i = currentItems.length - 1; i >= 0; i--) {\n                        const child = currentItems[i] as HTMLElement;\n                        if (\n                            this.el.nativeElement.offsetLeft + this.el.nativeElement.offsetWidth >=\n                            child.offsetLeft + child.offsetWidth - this.el.nativeElement.scrollLeft - this.antiBounce\n                        ) {\n                            this.service.setLastVisibleIndexEnd(this.uuidCarousel, i);\n                            break;\n                        }\n                    }\n                },\n            });\n    }\n\n    ngOnDestroy(): void {\n        const tabs = document.querySelectorAll(`.rt-carousel-tab-${this.uuidCarousel}`);\n        tabs.forEach(tab => {\n            tab.removeEventListener('scroll', () => {\n            });\n            tab.removeEventListener('click', () => {\n            });\n        });\n\n        this.service.destroyCarousel(this.uuidCarousel);\n        this.subscription.unsubscribe();\n    }\n\n    private createMutationObserverObservable(target: HTMLElement): Observable<MutationRecord[]> {\n        return new Observable(observer => {\n            const observerInstance = new MutationObserver(mutationsList => {\n                observer.next(mutationsList);\n            });\n            observerInstance.observe(target, {\n                childList: true,\n                subtree: true,\n            });\n            return () => {\n                observerInstance.disconnect();\n            };\n        });\n    }\n}\n"]}