Method focus

lib/selection-manager.ts:336–341

* Focus the terminal (make it receive keyboard input)

()

   * Focus the terminal (make it receive keyboard input)
   */
  focus(): void {
    const canvas = this.renderer.getCanvas();
    if (canvas.parentElement) {
      canvas.parentElement.focus();
    }
  }

  /**
   * Get current selection coordinates (for rendering)