import { Component, OnInit } from '@angular/core'
import { of } from 'rxjs'

@Component({
    selector: 'combo-demo',
    templateUrl: 'combo-demo.component.html'
})
export class ComboDemoComponent implements OnInit {
    displayText = 'null'
    constructor() {}

    ngOnInit() {}

    beforeOpen = () => {
        console.log('打开前')
        return of(true)
    }

    beforeHide = () => {
        console.log('关闭前')
        return of(true)
    }
}