introduce AvatarOptions for simplifying APIs

lib/src/models/avatar_options.dart

@@ -0,0 +1,9 @@
+import 'package:acter_avatar/acter_avatar.dart';
+
+/// Abstract class representing the set of avatars.
+abstract class AvatarOptions {
+  AvatarInfo? get avatar;
+  List<AvatarInfo>? get parentAvatars;
+  double? get size;
+  double? get parentSize;
+}

lib/src/models/dm_avatar_options.dart

@@ -0,0 +1,21 @@
+import 'package:acter_avatar/src/models/avatar_info.dart';
+import 'package:acter_avatar/src/models/avatar_options.dart';
+
+/// Class representing avatar for Direct Message/Private Chat (DM).
+class DMAvatarOptions extends AvatarOptions {
+  DMAvatarOptions({required this.dmAvatar, this.avatarSize});
+  @override
+  AvatarInfo get avatar => dmAvatar;
+
+  @override
+  List<AvatarInfo>? get parentAvatars => null;
+
+  @override
+  double? get size => avatarSize ?? 24.0;
+
+  @override
+  double? get parentSize => null;
+
+  final AvatarInfo dmAvatar;
+  final double? avatarSize;
+}

lib/src/models/group_chat_avatar_option.dart

@@ -0,0 +1,29 @@
+import 'package:acter_avatar/src/models/avatar_info.dart';
+import 'package:acter_avatar/src/models/avatar_options.dart';
+
+/// Class representing set of avatars for group chat/room.
+class GroupChatAvatarOptions extends AvatarOptions {
+  GroupChatAvatarOptions({
+    required this.groupAvatar,
+    required this.parentGroupAvatars,
+    this.avatarSize,
+    this.parentAvatarSize,
+  });
+
+  @override
+  AvatarInfo? get avatar => groupAvatar;
+
+  @override
+  List<AvatarInfo>? get parentAvatars => parentGroupAvatars;
+
+  @override
+  double? get size => avatarSize ?? 48.0;
+
+  @override
+  double? get parentSize => parentAvatarSize ?? 24.0;
+
+  final AvatarInfo groupAvatar;
+  final List<AvatarInfo> parentGroupAvatars;
+  final double? avatarSize;
+  final double? parentAvatarSize;
+}

lib/src/models/group_dm_avatar_options.dart

@@ -0,0 +1,27 @@
+import 'package:acter_avatar/src/models/avatar_info.dart';
+import 'package:acter_avatar/src/models/avatar_options.dart';
+
+/// Class representing set of avatars for a group DM.
+class GroupDMAvatarOptions extends AvatarOptions {
+  GroupDMAvatarOptions({
+    required this.groupAvatars,
+    this.avatarSize,
+    this.parentAvatarSize,
+  });
+
+  @override
+  AvatarInfo? get avatar => null;
+
+  @override
+  List<AvatarInfo> get parentAvatars => groupAvatars;
+
+  @override
+  double? get size => avatarSize ?? 48.0;
+
+  @override
+  double? get parentSize => parentAvatarSize ?? 24.0;
+
+  final List<AvatarInfo> groupAvatars;
+  final double? avatarSize;
+  final double? parentAvatarSize;
+}

lib/src/models/space_avatar_options.dart

@@ -0,0 +1,25 @@
+import 'package:acter_avatar/src/models/avatar_info.dart';
+import 'package:acter_avatar/src/models/avatar_options.dart';
+
+/// Class representing set of avatars for a space.
+class SpaceAvatarOptions extends AvatarOptions {
+  SpaceAvatarOptions(this.avatarSize, this.parentAvatarSize,
+      {required this.spaceAvatar, this.parentSpaceAvatars});
+
+  @override
+  AvatarInfo get avatar => spaceAvatar;
+
+  @override
+  List<AvatarInfo>? get parentAvatars => parentSpaceAvatars;
+
+  @override
+  double? get size => avatarSize ?? 48.0;
+
+  @override
+  double? get parentSize => parentAvatarSize ?? 24.0;
+
+  final AvatarInfo spaceAvatar;
+  final List<AvatarInfo>? parentSpaceAvatars;
+  final double? avatarSize;
+  final double? parentAvatarSize;
+}