angular - 在组件之间展开/折叠功能

Question

我有 2 个不同的组件，我在其中使用 Angular - Expansion Panel 来实现可扩展的摘要 View 。
我可以集成 <mat-expansion-panel>到单个组件成功。
我需要帮助制作 Component2.html作为 Component1.html 的父级(在展开中展开 - 请参见下图)

组件 1 应该能够独立展开和折叠以显示数据

组件 2 应该将组件 1 嵌入到自身中，所以当 Component 1 is expanded it can show its data and display remaining Child components

注意 - 两个组件都有 兄弟关系 , no parent child或 child - parent组件1.html

  <div class="row">
    <div class>
      <dl class="row property_set" data-property-set-name="data">
        <mat-accordion>
          <mat-expansion-panel (opened)="doExpand = true"
                             (closed)="doExpand = false">
          <mat-expansion-panel-header>
            <mat-panel-title>
        <dt class="col-sm-4 record_property">data</dt>
      </mat-panel-title>
      <mat-panel-description>
        <dd class="col-sm-8 record_property_value data_name" id="{{genId(data.name)}}">
          <inline-misal-edit 
                        [(field)]="data.name" [elementType]="a.bName" (fieldChange)="dataModified(data)"
                        cols="30" rows="1"></inline-misal-edit>
          </dd>
      </mat-panel-description>
    </mat-expansion-panel-header>

        <dt class="col-sm-4 record_property">news</dt>
        <dd class="col-sm-8 record_property_value">{{data.news?.created | news}}</dd>
      </mat-expansion-panel>
    </mat-accordion>
      </dl>
    </div>

组件2.html

  <dl class="row property_set" data-property-set-name="misal">
    <mat-accordion>
        <mat-expansion-panel (opened)="doExpand = true"
                             (closed)="doExpand = false">
          <mat-expansion-panel-header>
            <mat-panel-title>
              misal Id
            </mat-panel-title>
            <mat-panel-description>
              <dd class="col-sm-10 record_property_value" data-property-type="select">{{misal.id || 'new'}}</dd>
            </mat-panel-description>
          </mat-expansion-panel-header>
          <dd class="col-sm-10 record_property_value misal_name">{{misal.data[0].name}}</dd>
          <dt class="col-sm-2 record_property">Country Pass</dt>
          <dt class="col-sm-2 record_property">Plugins Program</dt>
          <dd class="col-sm-10 record_property_value">
            <north-dhamma[(misal)]="misal" [editMode]="editMode" (misalChange)="recordModified.emit()"></registry-number>
          </dd>
          <dt *ngIf="misal.value === 'hovered'" class="col-sm-2 record_property">Related Plugins Program</dt>
          <dd *ngIf="misal.value === 'hovered'" class="col-sm-10 record_property_value">
            <land-hole></land-hole>
          </dd>
                </mat-expansion-panel>
      </mat-accordion>
  </dl>

.ts 文件

  panelOpenState = true;                 

更新
Robbie 下面给出的答案适用于 parent - child component relation 但不适用于 sibling component

Answer 1

一种方法是使用共享服务 - https://angular.io/guide/component-interaction#parent-and-children-communicate-via-a-service
但是我发现以下解决方案更简单，它允许在 2 个 sibling 之间共享数据。
app-sibling2.component.ts

import { AppSibling1Component } from '../app-sibling1/app-sibling1.component';

export class AppSibling2Component {
   @Input() data: AppSibling1Component;
   ...
}

在您的父组件模板中:

<!-- Assigns "AppSibling1Component" instance to variable "data" -->
<app-sibling1 #data></app-sibling1>
<!-- Passes the variable "data" to AppSibling2Component instance -->
<app-sibling2 [data]="data"></app-sibling2> 

我相信这就是你正在寻找的。如果您有任何问题，请告诉我