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/*
* Copyright (c) 2022. Deutsche Telekom AG
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*/
import { Injectable } from '@angular/core';
import { BehaviorSubject, Observable } from 'rxjs';
import { debounceTime } from 'rxjs/operators';
@Injectable()
export class LoadingIndicatorService {
private isVisible$ = new BehaviorSubject<boolean>(false);
private timeDelay = 500;
private counter = 0;
show(): void {
this.counter++;
if (this.counter > 0) {
setTimeout(() => this.isVisible$.next(true), 0);
}
}
hide(): void {
this.counter--;
if (this.counter === 0) {
setTimeout(() => this.isVisible$.next(false), 0);
}
}
isVisible(): Observable<boolean> {
return this.isVisible$.pipe(debounceTime(this.timeDelay));
}
}
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