Method _setOpen

core/src/components/menu/menu.tsx:468–492

(shouldOpen: boolean, animated = true, role?: string)

  }

  async _setOpen(shouldOpen: boolean, animated = true, role?: string): Promise<boolean> {
    // If the menu is disabled or it is currently being animated, let's do nothing
    if (!this._isActive() || this.isAnimating || shouldOpen === this._isOpen) {
      return false;
    }

    this.beforeAnimation(shouldOpen, role);

    await this.loadAnimation();
    await this.startAnimation(shouldOpen, animated);

    /**
     * If the animation was cancelled then
     * return false because the operation
     * did not succeed.
     */
    if (this.operationCancelled) {
      this.operationCancelled = false;
      return false;
    }

    this.afterAnimation(shouldOpen, role);

    return true;
  }

  private async loadAnimation(): Promise<void> {
    // Menu swipe animation takes the menu's inner width as parameter,