1 files changed, 48 insertions, 0 deletions
diff --git a/dom/html/ConstraintValidation.h b/dom/html/ConstraintValidation.h
new file mode 100644
index 0000000000..5bd6c89dcb
--- /dev/null
+++ b/dom/html/ConstraintValidation.h
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_ConstraintValidition_h___
+#define mozilla_dom_ConstraintValidition_h___
+
+#include "nsIConstraintValidation.h"
+#include "nsString.h"
+
+namespace mozilla {
+class ErrorResult;
+
+namespace dom {
+
+class ConstraintValidation : public nsIConstraintValidation {
+ public:
+  // Web IDL binding methods
+  void GetValidationMessage(nsAString& aValidationMessage,
+                            mozilla::ErrorResult& aError);
+  bool CheckValidity();
+
+ protected:
+  // You can't instantiate an object from that class.
+  ConstraintValidation();
+
+  virtual ~ConstraintValidation() = default;
+
+  void SetCustomValidity(const nsAString& aError);
+
+  virtual nsresult GetValidationMessage(nsAString& aValidationMessage,
+                                        ValidityStateType aType) {
+    return NS_OK;
+  }
+
+ private:
+  /**
+   * The string representing the custom error.
+   */
+  nsString mCustomValidity;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_ConstraintValidition_h___