在Ag-grid Angular中，单击日期选择器后，如果将焦点从单元格编辑器移动，可能会导致日期选择器关闭。为了解决这个问题，可以使用以下代码示例：

import { Component } from '@angular/core';
import { GridOptions } from 'ag-grid-community';
import { DatepickerComponent } from './datepicker.component';
import { MatDialog } from '@angular/material';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {

  private gridOptions: GridOptions;
  private datePicker: DatepickerComponent;

  constructor(private dialog: MatDialog) {
    this.gridOptions = {};
    this.gridOptions.columnDefs = [
      {headerName: 'Date', field: 'date', editable: true, cellEditor: 'datePicker'}
    ];
    this.gridOptions.components = {
      datePicker: this.getDatePicker()
    };
  }

  private getDatePicker() {
    return {
      template: '',
      init: function(params) {
        this.params = params;
        this.value = this.params.value;
        this.inputElement = document.createElement('input');
        this.inputElement.value = this.value;
        this.inputElement.classList.add('ag-input');
        this.inputElement.style.width = '100%';
        this.inputElement.style.height = '100%';
        this.inputElement.style.boxSizing = 'border-box';
        this.inputElement.addEventListener('blur', () => {
          if (this.datePicker) {
            setTimeout(() => {
              if (!this.datePicker.opened) {
                this.params.api.stopEditing();
              }
            })
          }
        });
        this.inputElement.addEventListener('click', () => {
          if (this.datePicker) {
            this.datePicker.open();
          }
        });
      },
      getGui: function() {
        return this.inputElement;
      },
      afterGuiAttached: function() {
        this.inputElement.focus();
        this.inputElement.select();
      },
      getValue: function() {
        return this.inputElement.value;
      },
      isPopup: function() {
        return true;
      },
      onClick: function(event) {
        event.stopPropagation();
        if (!this.datePicker) {
          const dialogRef = this.dialog.open(DatepickerComponent, {
            data: {date: this.value},
            panelClass: 'ag-grid-datepicker-dialog'
          });
          this.datePicker = dialogRef.componentInstance;
          dialogRef.afterClosed().subscribe(result => {
            this.datePicker = null;
            if (result) {
              this.inputElement.value = result;
            }