Dismiss rooms in chat list with sliding

lib/components/dialogs/simple_dialogs.dart

@@ -0,0 +1,39 @@
+import 'package:fluffychat/i18n/i18n.dart';
+import 'package:flutter/material.dart';
+
+class SimpleDialogs {
+  final BuildContext context;
+
+  const SimpleDialogs(this.context);
+
+  Future<bool> askConfirmation({
+    String titleText,
+    String confirmText,
+    String cancelText,
+  }) async {
+    bool confirmed = false;
+    await showDialog(
+      context: context,
+      builder: (c) => AlertDialog(
+        title: Text(I18n.of(context).areYouSure ?? titleText),
+        actions: <Widget>[
+          FlatButton(
+            child: Text(cancelText ?? I18n.of(context).close.toUpperCase(),
+                style: TextStyle(color: Colors.blueGrey)),
+            onPressed: () => Navigator.of(context).pop(),
+          ),
+          FlatButton(
+            child: Text(
+              confirmText ?? I18n.of(context).confirm.toUpperCase(),
+            ),
+            onPressed: () {
+              confirmed = true;
+              Navigator.of(context).pop();
+            },
+          ),
+        ],
+      ),
+    );
+    return confirmed;
+  }
+}