Created comments form

lib/utils/ui_utils.dart

@@ -118,3 +118,36 @@ Future<String> askUserString({
 
   return controller.text;
 }
+
+/// Show an alert dialog to get user confirmation for something
+///
+/// Return value of this function is never null
+Future<bool> askUserConfirmation({
+  @required BuildContext context,
+  String title,
+  @required String message,
+}) async {
+  if (title == null) title = tr("Confirm operation");
+
+  final result = await showDialog<bool>(
+      context: context,
+      builder: (c) => AlertDialog(
+            title: Text(title),
+            content: Text(message),
+            actions: <Widget>[
+              FlatButton(
+                onPressed: () => Navigator.pop(context, false),
+                child: Text(tr("Cancel").toUpperCase()),
+              ),
+              FlatButton(
+                onPressed: () => Navigator.pop(context, true),
+                child: Text(
+                  tr("Confirm").toUpperCase(),
+                  style: TextStyle(color: Colors.red),
+                ),
+              ),
+            ],
+          ));
+
+  return result != null && result;
+}