How can i set default collapse instead of expanding all ?

[long20014]

No description provided.

[clement-lpr]

agreed, this would be a very useful feature

[tomaszs]

It would be great to have this feature. However, there is a really nice way to fix it. It clicks all collapse icons causing everything to fold :)

  ngAfterViewInit() {
    this.collapseRows();
  }

  collapseRows() {
    const collapsors = document.getElementsByTagName('mat-icon');
    // tslint:disable-next-line: prefer-for-of
    for (let i = 0; i < collapsors.length; i++) {
      const collapsor = collapsors[i] as HTMLElement;
      collapsor.click();
    }
  }