src/components-examples/material/table/table-wrapped/table-wrapped-example.ts - main - githubmirror/components

src/components-examples/material/table/table-wrapped/table-wrapped-example.ts
104 строки3 KB
Kristiyan Kostadinov
docs: fix strict property initialization errors
17 дек 2025, 15:53
17 дек 2025, 15:53b4fe00f
import {DataSource} from '@angular/cdk/collections';
import {
  AfterContentInit,
  Component,
  ContentChildren,
  AfterViewInit,
  QueryList,
  ViewChild,
  ContentChild,
  forwardRef,
  input,
} from '@angular/core';
import {MatSort, MatSortModule} from '@angular/material/sort';
import {
  MatColumnDef,
  MatHeaderRowDef,
  MatNoDataRow,
  MatRowDef,
  MatTable,
  MatTableDataSource,
  MatTableModule,
} from '@angular/material/table';
import {MatButtonModule} from '@angular/material/button';

export interface PeriodicElement {
  name: string;
  position: number;
  weight: number;
  symbol: string;
}

const ELEMENT_DATA: PeriodicElement[] = [
  {position: 1, name: 'Hydrogen', weight: 1.0079, symbol: 'H'},
  {position: 2, name: 'Helium', weight: 4.0026, symbol: 'He'},
  {position: 3, name: 'Lithium', weight: 6.941, symbol: 'Li'},
  {position: 4, name: 'Beryllium', weight: 9.0122, symbol: 'Be'},
  {position: 5, name: 'Boron', weight: 10.811, symbol: 'B'},
  {position: 6, name: 'Carbon', weight: 12.0107, symbol: 'C'},
  {position: 7, name: 'Nitrogen', weight: 14.0067, symbol: 'N'},
  {position: 8, name: 'Oxygen', weight: 15.9994, symbol: 'O'},
  {position: 9, name: 'Fluorine', weight: 18.9984, symbol: 'F'},
  {position: 10, name: 'Neon', weight: 20.1797, symbol: 'Ne'},
];

/**
 * @title Table example that shows how to wrap a table component for definition and behavior reuse.
 */
@Component({
  selector: 'table-wrapped-example',
  styleUrl: 'table-wrapped-example.css',
  templateUrl: 'table-wrapped-example.html',
  imports: [MatButtonModule, forwardRef(() => WrapperTable), MatSortModule, MatTableModule],
})
export class TableWrappedExample implements AfterViewInit {
  displayedColumns: string[] = ['position', 'name', 'weight', 'symbol'];
  dataSource = new MatTableDataSource<PeriodicElement>(ELEMENT_DATA);

  @ViewChild('sort') sort!: MatSort;

  ngAfterViewInit() {
    this.dataSource.sort = this.sort;
  }

  clearTable() {
    this.dataSource.data = [];
  }

  addData() {
    this.dataSource.data = ELEMENT_DATA;
  }
}

/**
 * Table component that accepts column and row definitions in its content to be registered to the
 * table.
 */
@Component({
  selector: 'wrapper-table',
  templateUrl: 'wrapper-table.html',
  styles: `
    table {
      width: 100%;
    }
  `,
  imports: [MatTableModule, MatSortModule],
})
export class WrapperTable<T> implements AfterContentInit {
  @ContentChildren(MatHeaderRowDef) headerRowDefs!: QueryList<MatHeaderRowDef>;
  @ContentChildren(MatRowDef) rowDefs!: QueryList<MatRowDef<T>>;
  @ContentChildren(MatColumnDef) columnDefs!: QueryList<MatColumnDef>;
  @ContentChild(MatNoDataRow) noDataRow!: MatNoDataRow;

  @ViewChild(MatTable, {static: true}) table!: MatTable<T>;

  readonly columns = input.required<string[]>();
  readonly dataSource = input.required<DataSource<T>>();

  ngAfterContentInit() {
    this.columnDefs.forEach(columnDef => this.table.addColumnDef(columnDef));
    this.rowDefs.forEach(rowDef => this.table.addRowDef(rowDef));
    this.headerRowDefs.forEach(headerRowDef => this.table.addHeaderRowDef(headerRowDef));
    this.table.setNoDataRow(this.noDataRow);
  }
}