Method _updateFocusTrapState

src/material/sidenav/drawer.ts:636–642

Updates the enabled state of the focus trap.

()

  /** Updates the enabled state of the focus trap. */
  private _updateFocusTrapState() {
    if (this._focusTrap) {
      // Trap focus only if the backdrop is enabled. Otherwise, allow end user to interact with the
      // sidenav content.
      this._focusTrap.enabled = this.opened && !!this._container?._isShowingBackdrop();
    }
  }

  /**
   * Updates the position of the drawer in the DOM. We need to move the element around ourselves