refactor: Pages folder structure

lib/pages/archive/archive.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+
+import 'package:adaptive_dialog/adaptive_dialog.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+import 'package:future_loading_dialog/future_loading_dialog.dart';
+import 'package:matrix/matrix.dart';
+
+import 'package:fluffychat/pages/archive/archive_view.dart';
+import 'package:fluffychat/widgets/matrix.dart';
+
+class Archive extends StatefulWidget {
+  const Archive({Key key}) : super(key: key);
+
+  @override
+  ArchiveController createState() => ArchiveController();
+}
+
+class ArchiveController extends State<Archive> {
+  List<Room> archive;
+
+  Future<List<Room>> getArchive(BuildContext context) async {
+    if (archive != null) return archive;
+    return await Matrix.of(context).client.loadArchive();
+  }
+
+  void forgetAction(int i) => setState(() => archive.removeAt(i));
+
+  void forgetAllAction() async {
+    if (await showOkCancelAlertDialog(
+          useRootNavigator: false,
+          context: context,
+          title: L10n.of(context).areYouSure,
+          okLabel: L10n.of(context).yes,
+          cancelLabel: L10n.of(context).cancel,
+          message: L10n.of(context).clearArchive,
+        ) !=
+        OkCancelResult.ok) {
+      return;
+    }
+    await showFutureLoadingDialog(
+      context: context,
+      future: () async {
+        while (archive.isNotEmpty) {
+          Logs().v('Forget room ${archive.last.displayname}');
+          await archive.last.forget();
+          archive.removeLast();
+        }
+      },
+    );
+    setState(() => null);
+  }
+
+  @override
+  Widget build(BuildContext context) => ArchiveView(this);
+}

lib/pages/archive/archive_view.dart

@@ -0,0 +1,63 @@
+import 'package:flutter/material.dart';
+
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+import 'package:matrix/matrix.dart';
+
+import 'package:fluffychat/pages/archive/archive.dart';
+import 'package:fluffychat/pages/chat_list/chat_list_item.dart';
+
+class ArchiveView extends StatelessWidget {
+  final ArchiveController controller;
+
+  const ArchiveView(this.controller, {Key key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return FutureBuilder<List<Room>>(
+      future: controller.getArchive(context),
+      builder: (BuildContext context, snapshot) => Scaffold(
+        appBar: AppBar(
+          leading: const BackButton(),
+          title: Text(L10n.of(context).archive),
+          actions: [
+            if (snapshot.hasData &&
+                controller.archive != null &&
+                controller.archive.isNotEmpty)
+              TextButton(
+                onPressed: controller.forgetAllAction,
+                child: Text(L10n.of(context).clearArchive),
+              )
+          ],
+        ),
+        body: Builder(
+          builder: (BuildContext context) {
+            if (snapshot.hasError) {
+              return Center(
+                  child: Text(
+                L10n.of(context).oopsSomethingWentWrong,
+                textAlign: TextAlign.center,
+              ));
+            }
+            if (!snapshot.hasData) {
+              return const Center(
+                  child: CircularProgressIndicator.adaptive(strokeWidth: 2));
+            } else {
+              controller.archive = snapshot.data;
+              if (controller.archive.isEmpty) {
+                return const Center(
+                    child: Icon(Icons.archive_outlined, size: 80));
+              }
+              return ListView.builder(
+                itemCount: controller.archive.length,
+                itemBuilder: (BuildContext context, int i) => ChatListItem(
+                  controller.archive[i],
+                  onForget: controller.forgetAction,
+                ),
+              );
+            }
+          },
+        ),
+      ),
+    );
+  }
+}