Method _watchDrawerMode

src/material/sidenav/drawer.ts:990–997

Subscribes to changes in drawer mode so we can run change detection.

(drawer: MatDrawer)

  /** Subscribes to changes in drawer mode so we can run change detection. */
  private _watchDrawerMode(drawer: MatDrawer): void {
    drawer._modeChanged
      .pipe(takeUntil(merge(this._drawers.changes, this._destroyed)))
      .subscribe(() => {
        this.updateContentMargins();
        this._changeDetectorRef.markForCheck();
      });
  }

  /** Toggles the 'mat-drawer-opened' class on the main 'mat-drawer-container' element. */
  private _setContainerClass(isAdd: boolean): void {