internalSelectAnnotation method

Implementation

void internalSelectAnnotation(String annotationId, {bool toggle = false}) {
  runInAction(() {
    if (toggle) {
      if (_selectedAnnotationIds.contains(annotationId)) {
        _selectedAnnotationIds.remove(annotationId);
        final annotation = _annotations[annotationId];
        if (annotation != null) {
          annotation.setSelected(false);
        }
      } else {
        _selectedAnnotationIds.add(annotationId);
        final annotation = _annotations[annotationId];
        if (annotation != null) {
          annotation.setSelected(true);
        }
        // Note: Removed auto-bring-to-front to allow manual z-index management
      }
    } else {
      // Clear previous annotation selections
      for (final id in _selectedAnnotationIds) {
        final annotation = _annotations[id];
        if (annotation != null) {
          annotation.setSelected(false);
        }
      }

      _selectedAnnotationIds.clear();
      _selectedAnnotationIds.add(annotationId);

      final annotation = _annotations[annotationId];
      if (annotation != null) {
        annotation.setSelected(true);
      }

      // IMPORTANT: Clear nodes and connections when selecting annotation (unified selection)
      _clearNodeAndConnectionSelections();

      // NOTE: Auto-bring-to-front removed to preserve manual z-index management
      // Previously would set annotation.setZIndex(_annotations.length) here
    }
  });
}