将扩展面板添加到角材料表内的行

Posted 2023-03-13

【中文标题】将扩展面板添加到角材料表内的行

【英文标题】：Adding expansion panel to the row inside angular material table

【发布时间】：2018-06-26 21:15:54

【问题描述】：

我正在尝试添加一个类似于 mat-accordion 的扩展面板（可能是一个新组件），以便在单击时显示 mat-table 行内的详细视图。我附上了一个 plunker 来证明这个要求。 http://plnkr.co/edit/mBGT3D1JV5rXXRiEwCAc?p=info

这是我尝试添加扩展列的演示角度材料表，我在 html 数据表上添加了 plunker

<mat-table #table [dataSource]="dataSource">

  <!-- Position Column -->
  <ng-container matColumnDef="position">
    <mat-header-cell *matHeaderCellDef> No. </mat-header-cell>
    <mat-cell *matCellDef="let element"> element.position </mat-cell>
  </ng-container>


  <!-- Name Column -->
  <ng-container matColumnDef="name">
    <mat-header-cell *matHeaderCellDef> Name </mat-header-cell>
    <mat-cell *matCellDef="let element"> element.name </mat-cell>
  </ng-container>

  <!-- Weight Column -->
  <ng-container matColumnDef="weight">
    <mat-header-cell *matHeaderCellDef> Weight </mat-header-cell>
    <mat-cell *matCellDef="let element"> element.weight </mat-cell>
  </ng-container>

  <!-- Symbol Column -->
  <ng-container matColumnDef="symbol">
    <mat-header-cell *matHeaderCellDef> Symbol </mat-header-cell>
    <mat-cell *matCellDef="let element"> element.symbol </mat-cell>
  </ng-container>

  <mat-header-row *matHeaderRowDef="displayedColumns"></mat-header-row>
  <mat-row *matRowDef="let row; columns: displayedColumns;"></mat-row>
</mat-table>

【问题讨论】：

您可以使用这种方法 - ***.com/a/47867948/3055401

更新：stackblitz.com/angular/… 旧方法：找到了我正在寻找的答案，即使该方法不是最好的方法，但它仍然有效。任何其他方法都值得赞赏。 stackblitz.com/edit/…

您提供的代码无法正常工作，会出现一些区域问题

已修复，您的代码可以正常运行，但无法按预期运行！扩展面板应在另一个打开后关闭

@Asif Karim Bherani，我的回答能回答你的问题吗？

【参考方案1】：

在 angular2 材质文档中，现在有一个带有可扩展行的表格的示例： https://material.angular.io/components/table/examples

这是Stackblitz example 但我还包含了下面 Angular Material 文档中的 sn-ps

import Component from '@angular/core';
import animate, state, style, transition, trigger from '@angular/animations';

/**
 * @title Table with expandable rows
 */
@Component(
  selector: 'table-expandable-rows-example',
  styleUrls: ['table-expandable-rows-example.css'],
  templateUrl: 'table-expandable-rows-example.html',
  animations: [
    trigger('detailExpand', [
      state('collapsed', style(height: '0px', minHeight: '0')),
      state('expanded', style(height: '*')),
      transition('expanded <=> collapsed', animate('225ms cubic-bezier(0.4, 0.0, 0.2, 1)')),
    ]),
  ],
)
export class TableExpandableRowsExample 
  dataSource = ELEMENT_DATA;
  columnsToDisplay = ['name', 'weight', 'symbol', 'position'];
  expandedElement: PeriodicElement | null;


export interface PeriodicElement 
  name: string;
  position: number;
  weight: number;
  symbol: string;
  description: string;


const ELEMENT_DATA: PeriodicElement[] = [
  
    position: 1,
    name: 'Hydrogen',
    weight: 1.0079,
    symbol: 'H',
    description: `Hydrogen is a chemical element with symbol H and atomic number 1. With a standard
        atomic weight of 1.008, hydrogen is the lightest element on the periodic table.`
  , 
    position: 2,
    name: 'Helium',
    weight: 4.0026,
    symbol: 'He',
    description: `Helium is a chemical element with symbol He and atomic number 2. It is a
        colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas
        group in the periodic table. Its boiling point is the lowest among all the elements.`
  , 
    position: 3,
    name: 'Lithium',
    weight: 6.941,
    symbol: 'Li',
    description: `Lithium is a chemical element with symbol Li and atomic number 3. It is a soft,
        silvery-white alkali metal. Under standard conditions, it is the lightest metal and the
        lightest solid element.`
  , 
    position: 4,
    name: 'Beryllium',
    weight: 9.0122,
    symbol: 'Be',
    description: `Beryllium is a chemical element with symbol Be and atomic number 4. It is a
        relatively rare element in the universe, usually occurring as a product of the spallation of
        larger atomic nuclei that have collided with cosmic rays.`
  , 
    position: 5,
    name: 'Boron',
    weight: 10.811,
    symbol: 'B',
    description: `Boron is a chemical element with symbol B and atomic number 5. Produced entirely
        by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a
        low-abundance element in the Solar system and in the Earth's crust.`
  , 
    position: 6,
    name: 'Carbon',
    weight: 12.0107,
    symbol: 'C',
    description: `Carbon is a chemical element with symbol C and atomic number 6. It is nonmetallic
        and tetravalent—making four electrons available to form covalent chemical bonds. It belongs
        to group 14 of the periodic table.`
  , 
    position: 7,
    name: 'Nitrogen',
    weight: 14.0067,
    symbol: 'N',
    description: `Nitrogen is a chemical element with symbol N and atomic number 7. It was first
        discovered and isolated by Scottish physician Daniel Rutherford in 1772.`
  , 
    position: 8,
    name: 'Oxygen',
    weight: 15.9994,
    symbol: 'O',
    description: `Oxygen is a chemical element with symbol O and atomic number 8. It is a member of
         the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing
         agent that readily forms oxides with most elements as well as with other compounds.`
  , 
    position: 9,
    name: 'Fluorine',
    weight: 18.9984,
    symbol: 'F',
    description: `Fluorine is a chemical element with symbol F and atomic number 9. It is the
        lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard
        conditions.`
  , 
    position: 10,
    name: 'Neon',
    weight: 20.1797,
    symbol: 'Ne',
    description: `Neon is a chemical element with symbol Ne and atomic number 10. It is a noble gas.
        Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about
        two-thirds the density of air.`
  ,
];

table 
  width: 100%;


tr.example-detail-row 
  height: 0;


tr.example-element-row:not(.example-expanded-row):hover 
  background: whitesmoke;


tr.example-element-row:not(.example-expanded-row):active 
  background: #efefef;


.example-element-row td 
  border-bottom-width: 0;


.example-element-detail 
  overflow: hidden;
  display: flex;


.example-element-diagram 
  min-width: 80px;
  border: 2px solid black;
  padding: 8px;
  font-weight: lighter;
  margin: 8px 0;
  height: 104px;


.example-element-symbol 
  font-weight: bold;
  font-size: 40px;
  line-height: normal;


.example-element-description 
  padding: 16px;


.example-element-description-attribution 
  opacity: 0.5;

<table mat-table
       [dataSource]="dataSource" multiTemplateDataRows
       class="mat-elevation-z8">
  <ng-container matColumnDef="column" *ngFor="let column of columnsToDisplay">
    <th mat-header-cell *matHeaderCellDef> column </th>
    <td mat-cell *matCellDef="let element"> element[column] </td>
  </ng-container>

  <!-- Expanded Content Column - The detail row is made up of this one column that spans across all columns -->
  <ng-container matColumnDef="expandedDetail">
    <td mat-cell *matCellDef="let element" [attr.colspan]="columnsToDisplay.length">
      <div class="example-element-detail"
           [@detailExpand]="element == expandedElement ? 'expanded' : 'collapsed'">
        <div class="example-element-diagram">
          <div class="example-element-position"> element.position </div>
          <div class="example-element-symbol"> element.symbol </div>
          <div class="example-element-name"> element.name </div>
          <div class="example-element-weight"> element.weight </div>
        </div>
        <div class="example-element-description">
          element.description
          <span class="example-element-description-attribution"> -- Wikipedia </span>
        </div>
      </div>
    </td>
  </ng-container>

  <tr mat-header-row *matHeaderRowDef="columnsToDisplay"></tr>
  <tr mat-row *matRowDef="let element; columns: columnsToDisplay;"
      class="example-element-row"
      [class.example-expanded-row]="expandedElement === element"
      (click)="expandedElement = expandedElement === element ? null : element">
  </tr>
  <tr mat-row *matRowDef="let row; columns: ['expandedDetail']" class="example-detail-row"></tr>
</table>

您需要的关键位是：

component.html / 标记 multiTemplateDataRows 上的 mat-table 指令 扩展行的专用列（在提供的示例中为matColumnDef="expandedDetail"）。请注意 colspan 属性，它使这个跨越整个表。 扩展行的专用行。这将包含扩展列 ^ div 上的detailExpand 指令包含展开行[@detailExpand]="element == expandedElement ? 'expanded' : 'collapsed'" 中的详细信息 component.ts @Component 装饰器中的动画。这些在 UI 中切换展开/折叠状态 一个属性（在本例中为expandedElement），用于跟踪展开的行 component.scss

隐藏展开行溢出的样式

.example-element-detail  overflow: hidden; 

【讨论】：

这是 OP 预期方法的替代方案。

@stefan 可以回答这个问题：***.com/questions/65497251/…