refactor: Pages folder structure

lib/pages/new_group/new_group.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+
+import 'package:future_loading_dialog/future_loading_dialog.dart';
+import 'package:matrix/matrix.dart' as sdk;
+import 'package:vrouter/vrouter.dart';
+
+import 'package:fluffychat/pages/new_group/new_group_view.dart';
+import 'package:fluffychat/widgets/matrix.dart';
+
+class NewGroup extends StatefulWidget {
+  const NewGroup({Key key}) : super(key: key);
+
+  @override
+  NewGroupController createState() => NewGroupController();
+}
+
+class NewGroupController extends State<NewGroup> {
+  TextEditingController controller = TextEditingController();
+  bool publicGroup = false;
+
+  void setPublicGroup(bool b) => setState(() => publicGroup = b);
+
+  void submitAction([_]) async {
+    final client = Matrix.of(context).client;
+    final roomID = await showFutureLoadingDialog(
+      context: context,
+      future: () async {
+        final roomId = await client.createRoom(
+          preset: publicGroup
+              ? sdk.CreateRoomPreset.publicChat
+              : sdk.CreateRoomPreset.privateChat,
+          visibility: publicGroup ? sdk.Visibility.public : null,
+          roomAliasName: publicGroup && controller.text.isNotEmpty
+              ? controller.text.trim().toLowerCase().replaceAll(' ', '_')
+              : null,
+          name: controller.text.isNotEmpty ? controller.text : null,
+        );
+        if (client.getRoomById(roomId) == null) {
+          await client.onSync.stream.firstWhere(
+              (sync) => sync.rooms?.join?.containsKey(roomId) ?? false);
+        }
+        if (!publicGroup && client.encryptionEnabled) {
+          await client.getRoomById(roomId).enableEncryption();
+        }
+        return roomId;
+      },
+    );
+    if (roomID.error == null) {
+      VRouter.of(context).toSegments(['rooms', roomID.result, 'invite']);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) => NewGroupView(this);
+}

lib/pages/new_group/new_group_view.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+
+import 'package:fluffychat/pages/new_group/new_group.dart';
+import 'package:fluffychat/widgets/layouts/max_width_body.dart';
+
+class NewGroupView extends StatelessWidget {
+  final NewGroupController controller;
+
+  const NewGroupView(this.controller, {Key key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        leading: const BackButton(),
+        title: Text(L10n.of(context).createNewGroup),
+        elevation: 0,
+      ),
+      body: MaxWidthBody(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: <Widget>[
+            Padding(
+              padding: const EdgeInsets.all(12.0),
+              child: TextField(
+                controller: controller.controller,
+                autofocus: true,
+                autocorrect: false,
+                textInputAction: TextInputAction.go,
+                onSubmitted: controller.submitAction,
+                decoration: InputDecoration(
+                    labelText: L10n.of(context).optionalGroupName,
+                    prefixIcon: const Icon(Icons.people_outlined),
+                    hintText: L10n.of(context).enterAGroupName),
+              ),
+            ),
+            SwitchListTile(
+              title: Text(L10n.of(context).groupIsPublic),
+              value: controller.publicGroup,
+              onChanged: controller.setPublicGroup,
+            ),
+            Expanded(
+              child: Image.asset('assets/private_chat_wallpaper.png'),
+            ),
+          ],
+        ),
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: controller.submitAction,
+        child: const Icon(Icons.arrow_forward_outlined),
+      ),
+    );
+  }
+}