ngx-echarts/esm2022/lib/change-filter-v2.mjs

import { ReplaySubject, Subscription } from 'rxjs';
export class ChangeFilterV2 {
    constructor() {
        this.subject = new ReplaySubject(1);
        this.subscriptions = new Subscription();
    }
    doFilter(changes) {
        this.subject.next(changes);
    }
    dispose() {
        this.subscriptions.unsubscribe();
    }
    notEmpty(key, handler) {
        this.subscriptions.add(this.subject.subscribe(changes => {
            if (changes[key]) {
                const value = changes[key].currentValue;
                if (value !== undefined && value !== null) {
                    handler(value);
                }
            }
        }));
    }
    has(key, handler) {
        this.subscriptions.add(this.subject.subscribe(changes => {
            if (changes[key]) {
                const value = changes[key].currentValue;
                handler(value);
            }
        }));
    }
    notFirst(key, handler) {
        this.subscriptions.add(this.subject.subscribe(changes => {
            if (changes[key] && !changes[key].isFirstChange()) {
                const value = changes[key].currentValue;
                handler(value);
            }
        }));
    }
    notFirstAndEmpty(key, handler) {
        this.subscriptions.add(this.subject.subscribe(changes => {
            if (changes[key] && !changes[key].isFirstChange()) {
                const value = changes[key].currentValue;
                if (value !== undefined && value !== null) {
                    handler(value);
                }
            }
        }));
    }
}
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