refactor: Widget file structure and MVC user bottom sheet

lib/views/user_bottom_sheet.dart

@@ -0,0 +1,92 @@
+import 'package:adaptive_dialog/adaptive_dialog.dart';
+import 'package:adaptive_page_layout/adaptive_page_layout.dart';
+import 'package:famedlysdk/famedlysdk.dart';
+import 'package:fluffychat/views/permission_slider_dialog.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+
+import 'package:future_loading_dialog/future_loading_dialog.dart';
+
+import 'ui/user_bottom_sheet_ui.dart';
+
+class UserBottomSheet extends StatefulWidget {
+  final User user;
+  final Function onMention;
+
+  const UserBottomSheet({
+    Key key,
+    @required this.user,
+    this.onMention,
+  }) : super(key: key);
+
+  @override
+  UserBottomSheetController createState() => UserBottomSheetController();
+}
+
+class UserBottomSheetController extends State<UserBottomSheet> {
+  void participantAction(String action) async {
+    final Function _askConfirmation =
+        () async => (await showOkCancelAlertDialog(
+              context: context,
+              useRootNavigator: false,
+              title: L10n.of(context).areYouSure,
+              okLabel: L10n.of(context).yes,
+              cancelLabel: L10n.of(context).no,
+            ) ==
+            OkCancelResult.ok);
+    switch (action) {
+      case 'mention':
+        Navigator.of(context, rootNavigator: false).pop();
+        widget.onMention();
+        break;
+      case 'ban':
+        if (await _askConfirmation()) {
+          await showFutureLoadingDialog(
+            context: context,
+            future: () => widget.user.ban(),
+          );
+          Navigator.of(context, rootNavigator: false).pop();
+        }
+        break;
+      case 'unban':
+        if (await _askConfirmation()) {
+          await showFutureLoadingDialog(
+            context: context,
+            future: () => widget.user.unban(),
+          );
+          Navigator.of(context, rootNavigator: false).pop();
+        }
+        break;
+      case 'kick':
+        if (await _askConfirmation()) {
+          await showFutureLoadingDialog(
+            context: context,
+            future: () => widget.user.kick(),
+          );
+          Navigator.of(context, rootNavigator: false).pop();
+        }
+        break;
+      case 'permission':
+        final newPermission = await PermissionSliderDialog(
+                initialPermission: widget.user.powerLevel)
+            .show(context);
+        if (newPermission != null) {
+          if (newPermission == 100 && await _askConfirmation() == false) break;
+          await showFutureLoadingDialog(
+            context: context,
+            future: () => widget.user.setPower(newPermission),
+          );
+          Navigator.of(context, rootNavigator: false).pop();
+        }
+        break;
+      case 'message':
+        final roomId = await widget.user.startDirectChat();
+        await AdaptivePageLayout.of(context)
+            .pushNamedAndRemoveUntilIsFirst('/rooms/$roomId');
+        break;
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) => UserBottomSheetUI(this);
+}