Method dispose

lib/selection-manager.ts:374–406

* Cleanup resources

()

   * Cleanup resources
   */
  dispose(): void {
    this.selectionChangedEmitter.dispose();

    // Stop auto-scroll if active
    this.stopAutoScroll();

    // Clean up document event listener
    if (this.boundMouseUpHandler) {
      document.removeEventListener('mouseup', this.boundMouseUpHandler);
      this.boundMouseUpHandler = null;
    }

    // Clean up document mousemove listener
    if (this.boundDocumentMouseMoveHandler) {
      document.removeEventListener('mousemove', this.boundDocumentMouseMoveHandler);
      this.boundDocumentMouseMoveHandler = null;
    }

    // Clean up context menu event listener
    if (this.boundContextMenuHandler) {
      const canvas = this.renderer.getCanvas();
      canvas.removeEventListener('contextmenu', this.boundContextMenuHandler);
      this.boundContextMenuHandler = null;
    }

    // Clean up document click listener
    if (this.boundClickHandler) {
      document.removeEventListener('click', this.boundClickHandler);
      this.boundClickHandler = null;
    }

    // Canvas event listeners will be cleaned up when canvas is removed from DOM
  }

  // ==========================================================================
  // Private Methods