如何在Angular中注册全局模型状态下的页面元素？

ng generate service state

import { Injectable } from '@angular/core';
import { BehaviorSubject } from 'rxjs';

@Injectable({
  providedIn: 'root'
})
export class StateService {
  private globalState = new BehaviorSubject<any>(null);

  constructor() { }

  setGlobalState(state: any) {
    this.globalState.next(state);
  }

  getGlobalState() {
    return this.globalState.asObservable();
  }
}

import { Component, OnInit } from '@angular/core';
import { StateService } from 'path/to/state.service';

@Component({
  selector: 'app-my-component',
  templateUrl: './my-component.component.html',
  styleUrls: ['./my-component.component.css']
})
export class MyComponentComponent implements OnInit {
  globalState: any;

  constructor(private stateService: StateService) { }

  ngOnInit() {
    this.stateService.getGlobalState().subscribe(state => {
      this.globalState = state;
    });
  }
}

import { Component, OnInit } from '@angular/core';
import { StateService } from 'path/to/state.service';

@Component({
  selector: 'app-another-component',
  templateUrl: './another-component.component.html',
  styleUrls: ['./another-component.component.css']
})
export class AnotherComponentComponent implements OnInit {
  constructor(private stateService: StateService) { }

  updateGlobalState() {
    const newState = { /* 新的全局状态 */ };
    this.stateService.setGlobalState(newState);
  }
}