Citra-qt: Add multiplayer ui

src/citra_qt/multiplayer/validation.h

@@ -0,0 +1,28 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QRegExp>
+#include <QValidator>
+
+namespace Validation {
+/// room name can be alphanumeric and " " "_" "." and "-"
+static const QRegExp room_name_regex("^[a-zA-Z0-9._- ]+$");
+static const QValidator* room_name = new QRegExpValidator(room_name_regex);
+
+/// nickname can be alphanumeric and " " "_" "." and "-"
+static const QRegExp nickname_regex("^[a-zA-Z0-9._- ]+$");
+static const QValidator* nickname = new QRegExpValidator(nickname_regex);
+
+/// ipv4 address only
+// TODO remove this when we support hostnames in direct connect
+static const QRegExp ip_regex(
+    "(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|"
+    "2[0-4][0-9]|25[0-5])");
+static const QValidator* ip = new QRegExpValidator(ip_regex);
+
+/// port must be between 0 and 65535
+static const QValidator* port = new QIntValidator(0, 65535);
+}; // namespace Validation