attachment lint

packages/stream_chat_flutter/lib/src/attachment/attachment_widget.dart

@@ -1,13 +1,17 @@
 import 'package:flutter/material.dart';
+import 'package:stream_chat_flutter/stream_chat_flutter.dart';
 import 'package:stream_chat_flutter_core/stream_chat_flutter_core.dart';
 
-import '../stream_chat_theme.dart';
-
+/// Enum for identifying type of attachment
 enum AttachmentSource {
+  /// Attachment is attached
   local,
+
+  /// Attachment is uploaded
   network,
 }
 
+/// Extension for identifying type of attachment
 extension AttachmentSourceX on AttachmentSource {
   /// The [when] method is the equivalent to pattern matching.
   /// Its prototype depends on the AttachmentSource defined.
@@ -25,18 +29,9 @@ extension AttachmentSourceX on AttachmentSource {
   }
 }
 
+/// Abstract class for deriving attachment types
 abstract class AttachmentWidget extends StatelessWidget {
-  final Size? size;
-  final AttachmentSource? _source;
-  final Message message;
-  final Attachment attachment;
-
-  AttachmentSource get source =>
-      _source ??
-      (attachment.file != null
-          ? AttachmentSource.local
-          : AttachmentSource.network);
-
+  /// Constructor for creating attachment widget
   const AttachmentWidget({
     Key? key,
     required this.message,
@@ -45,30 +40,48 @@ abstract class AttachmentWidget extends StatelessWidget {
     AttachmentSource? source,
   })  : _source = source,
         super(key: key);
+
+  /// Size of attachments
+  final Size? size;
+  final AttachmentSource? _source;
+
+  /// Message which attachment is attached to
+  final Message message;
+
+  /// Attachment to display
+  final Attachment attachment;
+
+  /// Getter for source of attachment
+  AttachmentSource get source =>
+      _source ??
+      (attachment.file != null
+          ? AttachmentSource.local
+          : AttachmentSource.network);
 }
 
+/// Widget for building in case of error
 class AttachmentError extends StatelessWidget {
-  final Size? size;
-
+  /// Constructor for creating AttachmentError
   const AttachmentError({
     Key? key,
     this.size,
   }) : super(key: key);
 
+  final Size? size;
+
   @override
-  Widget build(BuildContext context) {
-    return Center(
-      child: Container(
-        width: size?.width,
-        height: size?.height,
-        color: StreamChatTheme.of(context).colorTheme.accentRed.withOpacity(.1),
-        child: Center(
-          child: Icon(
-            Icons.error_outline,
-            color: StreamChatTheme.of(context).colorTheme.black,
+  Widget build(BuildContext context) => Center(
+        child: Container(
+          width: size?.width,
+          height: size?.height,
+          color:
+              StreamChatTheme.of(context).colorTheme.accentRed.withOpacity(.1),
+          child: Center(
+            child: Icon(
+              Icons.error_outline,
+              color: StreamChatTheme.of(context).colorTheme.black,
+            ),
           ),
         ),
-      ),
-    );
-  }
+      );
 }