car-interface-android/lib/data/models/slot_assignment.dart

import 'package:flutter/foundation.dart';

/// A persisted app choice for one shortcut slot.
@immutable
class SlotAssignment {
  const SlotAssignment({
    required this.packageName,
    required this.activityName,
    required this.label,
    this.iconPackageName,
    this.iconActivityName,
  });

  final String packageName;
  final String activityName;
  final String label;

  /// Optional app whose icon should be used for this Home button. Only pinned
  /// apps use this; slot assignments leave both fields null.
  final String? iconPackageName;
  final String? iconActivityName;

  bool get hasCustomIcon =>
      (iconPackageName?.isNotEmpty ?? false) &&
      (iconActivityName?.isNotEmpty ?? false);

  factory SlotAssignment.fromMap(Map<dynamic, dynamic> map) {
    return SlotAssignment(
      packageName: (map['package'] as String?) ?? '',
      activityName: (map['activity'] as String?) ?? '',
      label: (map['label'] as String?) ?? '',
      iconPackageName: map['iconPackage'] as String?,
      iconActivityName: map['iconActivity'] as String?,
    );
  }

  Map<String, Object?> toMap() {
    return {
      'package': packageName,
      'activity': activityName,
      'label': label,
      if (hasCustomIcon) 'iconPackage': iconPackageName,
      if (hasCustomIcon) 'iconActivity': iconActivityName,
    };
  }

  @override
  bool operator ==(Object other) {
    return other is SlotAssignment &&
        other.packageName == packageName &&
        other.activityName == activityName;
  }

  @override
  int get hashCode => Object.hash(packageName, activityName);

  @override
  String toString() => label.isEmpty ? packageName : label;
}