angular/modules/benchmarks/src/hydration/table.ts

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.dev/license
 */

import {Component, Input} from '@angular/core';
import {DomSanitizer, SafeStyle} from '@angular/platform-browser';

import {TableCell} from './util';

let trustedEmptyColor: SafeStyle;
let trustedGreyColor: SafeStyle;

@Component({
  standalone: true,
  selector: 'app',
  template: ``,
})
export class AppComponent {
  constructor(sanitizer: DomSanitizer) {
    trustedEmptyColor = sanitizer.bypassSecurityTrustStyle('white');
    trustedGreyColor = sanitizer.bypassSecurityTrustStyle('grey');
  }
}

@Component({
  standalone: true,
  selector: 'table-cmp',
  template: `
    <table>
      <tbody>
        @for (row of data; track $index) {
        <tr>
          @for (cell of row; track $index) {
          <td [style.backgroundColor]="getColor(cell.row)">
            {{ cell.value + '!' }}
          </td>
          }
        </tr>
        }
      </tbody>
    </table>
  `,
})
export class TableComponent {
  @Input() data: TableCell[][] = [];

  getColor(row: number) {
    return row % 2 ? trustedEmptyColor : trustedGreyColor;
  }
}

export function setupTransferState(cols: string, rows: string) {
  const script = document.createElement('script');
  script.id = 'ng-state';
  script.type = 'application/json';
  // This script contains hydration annotation for the `TableComponent` component.
  // Note: if you change the `TableComponent` template, make sure to update this
  // annotation as well.
  script.textContent = `{"__nghData__":[{"t":{"3":"t0"},"c":{"3":[{"i":"t0","r":1,"t":{"2":"t1"},"c":{"2":[{"i":"t1","r":1,"x":${cols}}]},"x":${rows}}]}}]}`;
  document.body.insertBefore(script, document.body.firstChild);
}