iceye-angular-cesium-fork/esm2015/lib/angular-cesium/services/map-events-mananger/event-observers/cesium-long-press-observer.js

Angular library for working with Cesium.

import { of as observableOf } from 'rxjs';
import { delay, mergeMap, publish, takeUntil } from 'rxjs/operators';
import { CesiumPureEventObserver } from './cesium-pure-event-observer';
import { CesiumEvent } from '../consts/cesium-event.enum';
export class CesiumLongPressObserver extends CesiumPureEventObserver {
    constructor(event, modifier, eventFactory) {
        super(event, modifier);
        this.event = event;
        this.modifier = modifier;
        this.eventFactory = eventFactory;
    }
    init() {
        let startEvent;
        let stopEvent;
        if (this.event === CesiumEvent.LONG_LEFT_PRESS) {
            startEvent = CesiumEvent.LEFT_DOWN;
            stopEvent = CesiumEvent.LEFT_UP;
        }
        else if (this.event === CesiumEvent.LONG_RIGHT_PRESS) {
            startEvent = CesiumEvent.RIGHT_DOWN;
            stopEvent = CesiumEvent.RIGHT_UP;
        }
        else if (this.event === CesiumEvent.LONG_MIDDLE_PRESS) {
            startEvent = CesiumEvent.MIDDLE_DOWN;
            stopEvent = CesiumEvent.MIDDLE_UP;
        }
        const startEventObservable = this.eventFactory.get(startEvent, this.modifier);
        const stopEventObservable = this.eventFactory.get(stopEvent, this.modifier);
        // publish for preventing side effect
        const longPressObservable = publish()(startEventObservable.pipe(mergeMap((e) => observableOf(e).pipe(delay(CesiumLongPressObserver.LONG_PRESS_EVENTS_DURATION), takeUntil(stopEventObservable)))));
        return longPressObservable;
    }
}
CesiumLongPressObserver.LONG_PRESS_EVENTS_DURATION = 250;
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