ngx-owl-carousel-o
Version:
Angular powered owl-carousel
59 lines • 8.66 kB
JavaScript
import * as tslib_1 from "tslib";
import { Injectable } from '@angular/core';
import { merge } from 'rxjs';
import { CarouselService } from './carousel.service';
import { tap } from 'rxjs/operators';
let AutoHeightService = class AutoHeightService {
constructor(carouselService) {
this.carouselService = carouselService;
this.spyDataStreams();
}
ngOnDestroy() {
this.autoHeightSubscription.unsubscribe();
}
/**
* Defines Observables which service must observe
*/
spyDataStreams() {
const initializedCarousel$ = this.carouselService.getInitializedState().pipe(tap(data => {
if (this.carouselService.settings.autoHeight) {
this.update();
}
else {
this.carouselService.slidesData.forEach(slide => slide.heightState = 'full');
}
}));
const changedSettings$ = this.carouselService.getChangedState().pipe(tap(data => {
if (this.carouselService.settings.autoHeight && data.property.name === 'position') {
this.update();
}
}));
const refreshedCarousel$ = this.carouselService.getRefreshedState().pipe(tap(data => {
if (this.carouselService.settings.autoHeight) {
this.update();
}
}));
const autoHeight$ = merge(initializedCarousel$, changedSettings$, refreshedCarousel$);
this.autoHeightSubscription = autoHeight$.subscribe(() => { });
}
/**
* Updates the prop 'heightState' of slides
*/
update() {
const items = this.carouselService.settings.items;
let start = this.carouselService.current(), end = start + items;
if (this.carouselService.settings.center) {
start = items % 2 === 1 ? start - (items - 1) / 2 : start - items / 2;
end = items % 2 === 1 ? start + items : start + items + 1;
}
this.carouselService.slidesData.forEach((slide, i) => {
slide.heightState = (i >= start && i < end) ? 'full' : 'nulled';
});
}
};
AutoHeightService = tslib_1.__decorate([
Injectable(),
tslib_1.__metadata("design:paramtypes", [CarouselService])
], AutoHeightService);
export { AutoHeightService };
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