From 175248e06ed88fb4d4be8c275bcea0e9afa1439f Mon Sep 17 00:00:00 2001
From: krawieck <fil.krawczyk@gmail.com>
Date: Mon, 28 Sep 2020 22:12:40 +0200
Subject: [PATCH] moved infinite post list to a separate widget

---
 lib/pages/community.dart            | 56 ++++++-----------------------
 lib/widgets/infinite_post_list.dart | 44 +++++++++++++++++++++++
 2 files changed, 54 insertions(+), 46 deletions(-)
 create mode 100644 lib/widgets/infinite_post_list.dart

diff --git a/lib/pages/community.dart b/lib/pages/community.dart
index 855f208..2d795bb 100644
--- a/lib/pages/community.dart
+++ b/lib/pages/community.dart
@@ -8,7 +8,6 @@ import 'package:lemmy_api_client/lemmy_api_client.dart';
 import 'package:url_launcher/url_launcher.dart' as ul;
 
 import '../hooks/delayed_loading.dart';
-import '../hooks/infinite_scroll.dart';
 import '../hooks/logged_in_action.dart';
 import '../hooks/memo_future.dart';
 import '../hooks/stores.dart';
@@ -19,10 +18,8 @@ import '../util/text_color.dart';
 import '../widgets/badge.dart';
 import '../widgets/bottom_modal.dart';
 import '../widgets/fullscreenable_image.dart';
-import '../widgets/infinite_scroll.dart';
+import '../widgets/infinite_post_list.dart';
 import '../widgets/markdown_text.dart';
-import '../widgets/post.dart';
-import '../widgets/post_list_options.dart';
 
 class CommunityPage extends HookWidget {
   final CommunityView _community;
@@ -211,7 +208,15 @@ class CommunityPage extends HookWidget {
           ],
           body: TabBarView(
             children: [
-              _PostsTab(community),
+              InfinitePostList(
+                  fetcher: (page, batchSize, sort) =>
+                      LemmyApi(community.instanceUrl).v1.getPosts(
+                            type: PostListingType.community,
+                            sort: sort,
+                            communityId: community.id,
+                            page: page,
+                            // limit: 10,
+                          )),
               ListView(
                 children: [
                   Center(child: Text('comments go here')),
@@ -494,47 +499,6 @@ class _AboutTab extends StatelessWidget {
   }
 }
 
-class _PostsTab extends HookWidget {
-  final CommunityView community;
-
-  _PostsTab(this.community);
-
-  @override
-  Widget build(BuildContext context) {
-    final isc = useInfiniteScrollController();
-    final sort = useState(SortType.active);
-
-    void changeSorting(SortType newSort) {
-      sort.value = newSort;
-      isc.clear();
-    }
-
-    return InfiniteScroll<PostView>(
-      prepend: PostListOptions(
-        onChange: changeSorting,
-        defaultSort: SortType.active,
-      ),
-      builder: (post) => Column(
-        children: [
-          Post(post),
-          SizedBox(height: 20),
-        ],
-      ),
-      padding: EdgeInsets.zero,
-      fetchMore: (page, batchSize) =>
-          LemmyApi(community.instanceUrl).v1.getPosts(
-                type: PostListingType.community,
-                sort: sort.value,
-                communityId: community.id,
-                page: page,
-                // limit: 10,
-              ),
-      controller: isc,
-      // batchSize: 20,
-    );
-  }
-}
-
 class _Badge extends StatelessWidget {
   final String text;
   final bool noPad;
diff --git a/lib/widgets/infinite_post_list.dart b/lib/widgets/infinite_post_list.dart
new file mode 100644
index 0000000..94e098d
--- /dev/null
+++ b/lib/widgets/infinite_post_list.dart
@@ -0,0 +1,44 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+import 'package:lemmy_api_client/lemmy_api_client.dart';
+
+import '../hooks/infinite_scroll.dart';
+import 'infinite_scroll.dart';
+import 'post.dart';
+import 'post_list_options.dart';
+
+/// Infinite list of posts
+class InfinitePostList extends HookWidget {
+  final Future<List<PostView>> Function(
+      int page, int batchSize, SortType sortType) fetcher;
+
+  InfinitePostList({@required this.fetcher}) : assert(fetcher != null);
+
+  @override
+  Widget build(BuildContext context) {
+    final isc = useInfiniteScrollController();
+    final sort = useState(SortType.active);
+
+    void changeSorting(SortType newSort) {
+      sort.value = newSort;
+      isc.clear();
+    }
+
+    return InfiniteScroll<PostView>(
+      prepend: PostListOptions(
+        onChange: changeSorting,
+        defaultSort: SortType.active,
+      ),
+      builder: (post) => Column(
+        children: [
+          Post(post),
+          SizedBox(height: 20),
+        ],
+      ),
+      padding: EdgeInsets.zero,
+      fetchMore: (page, batchSize) => fetcher(page, batchSize, sort.value),
+      controller: isc,
+      // batchSize: 20,
+    );
+  }
+}