inspect static method

Map<String, dynamic> inspect()

Walks the entire tree and returns a JSON with all widgets that contain data relevant for testing.

The JSON includes:

• timestamp: when the snapshot was taken
• widget_count: number of widgets found
• widgets: list of entries, each with type, depth, and data depending on the type (value, label, enabled, key, x, y, w, h)

Implementation

static Map<String, dynamic> inspect() {
  final root = WidgetsBinding.instance.rootElement;
  if (root == null) {
    return {
      'timestamp': DateTime.now().toUtc().toIso8601String(),
      'widget_count': 0,
      'widgets': <Map<String, dynamic>>[],
      'error': 'rootElement not available',
    };
  }

  final result = <Map<String, dynamic>>[];
  _walk(root, 0, result);

  // Sanitize the entire result before returning: any NaN or Infinite double
  // (from positions, Slider.value/min/max, etc.) is converted to null
  // so that jsonEncode never fails due to non-serializable values.
  final sanitized = sanitizeList(result);

  return {
    'timestamp': DateTime.now().toUtc().toIso8601String(),
    'widget_count': sanitized.length,
    'widgets': sanitized,
  };
}