Moved displaying markdown to separate widget

lib/widgets/markdown_text.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_markdown/flutter_markdown.dart';
+import 'package:markdown/markdown.dart' as md;
+
+import '../url_launcher.dart';
+
+Widget MarkdownText(String text, BuildContext context) {
+  return MarkdownBody(
+    data: text,
+    extensionSet: md.ExtensionSet.gitHubWeb,
+    onTapLink: (href) {
+      urlLauncher(href)
+          .catchError((e) => Scaffold.of(context).showSnackBar(SnackBar(
+                content: Row(
+                  children: [
+                    Icon(Icons.warning),
+                    Text('couldn\'t open link'),
+                  ],
+                ),
+              )));
+    },
+  );
+}

lib/widgets/post.dart

@@ -2,13 +2,11 @@ import 'package:cached_network_image/cached_network_image.dart';
 import 'package:esys_flutter_share/esys_flutter_share.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter_markdown/flutter_markdown.dart';
 import 'package:intl/intl.dart';
 import 'package:lemmy_api_client/lemmy_api_client.dart';
-import 'package:markdown/markdown.dart' as md;
 import 'package:timeago/timeago.dart' as timeago;
 
-import '../url_launcher.dart';
+import 'markdown_text.dart';
 
 enum MediaType {
   image,
@@ -329,16 +327,7 @@ class PostWidget extends StatelessWidget {
   Widget _textBody() {
     return Padding(
       padding: const EdgeInsets.all(10),
-      child: MarkdownBody(
-        data: post.body,
-        extensionSet: md.ExtensionSet.gitHubWeb,
-        onTapLink: (href) {
-          urlLauncher(href)
-              .catchError((e) => Scaffold.of(_context).showSnackBar(SnackBar(
-                    content: Text('couldn\'t open link'),
-                  )));
-        },
-      ),
+      child: MarkdownText(post.body, _context),
     );
   }