angular-calendar-timeline/esm2022/lib/zooms-handler/zooms-handler.mjs

A timeline for angular that shows events on a timeline board in different modes: days, weeks, and months.

import { BehaviorSubject } from "rxjs";
export class ZoomsHandler {
    get activeZoom() {
        return this._activeZoom$.value;
    }
    get zooms() {
        return this._zooms;
    }
    constructor(zooms) {
        this._activeZoom$ = new BehaviorSubject(null);
        this.activeZoom$ = this._activeZoom$.asObservable();
        this.setZooms(zooms);
    }
    setZooms(zooms) {
        this._zooms = (zooms ?? []).map((item, index) => ({ ...item, index }));
        this._activeZoom$.next(this.getLastZoom());
    }
    getFirstZoom() {
        return this._zooms[0];
    }
    getLastZoom() {
        return this._zooms[this._zooms.length - 1];
    }
    zoomIn() {
        let newZoomIndex = this.activeZoom.index + 1;
        const lastZoomIndex = this.getLastZoom().index;
        if (newZoomIndex > lastZoomIndex) {
            newZoomIndex = lastZoomIndex;
        }
        this.changeActiveZoom(this._zooms[newZoomIndex]);
    }
    zoomOut() {
        let newZoomIndex = this.activeZoom.index - 1;
        const firstZoomIndex = this.getFirstZoom().index;
        if (newZoomIndex < firstZoomIndex) {
            newZoomIndex = firstZoomIndex;
        }
        this.changeActiveZoom(this._zooms[newZoomIndex]);
    }
    changeActiveZoom(zoom) {
        if (zoom) {
            this._activeZoom$.next(this._zooms[this._findZoomIndex(zoom)]);
        }
    }
    isZoomActive(zoom) {
        return this._findZoomIndex(zoom) === this.activeZoom.index;
    }
    _findZoomIndex(zoom) {
        return this._zooms.findIndex(i => i.columnWidth === zoom.columnWidth && i.viewMode === zoom.viewMode);
    }
}
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