1 files changed, 93 insertions, 0 deletions
diff --git a/dom/html/ValidityState.h b/dom/html/ValidityState.h
new file mode 100644
index 0000000000..b9cf7cf464
--- /dev/null
+++ b/dom/html/ValidityState.h
@@ -0,0 +1,93 @@
+/* -*- 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_ValidityState_h
+#define mozilla_dom_ValidityState_h
+
+#include "nsCOMPtr.h"
+#include "nsIConstraintValidation.h"
+#include "nsWrapperCache.h"
+#include "js/TypeDecls.h"
+
+namespace mozilla::dom {
+
+class ValidityState final : public nsISupports, public nsWrapperCache {
+  ~ValidityState() = default;
+
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(ValidityState)
+
+  friend class ::nsIConstraintValidation;
+
+  nsIConstraintValidation* GetParentObject() const {
+    return mConstraintValidation;
+  }
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  // Web IDL methods
+  bool ValueMissing() const {
+    return GetValidityState(
+        nsIConstraintValidation::VALIDITY_STATE_VALUE_MISSING);
+  }
+  bool TypeMismatch() const {
+    return GetValidityState(
+        nsIConstraintValidation::VALIDITY_STATE_TYPE_MISMATCH);
+  }
+  bool PatternMismatch() const {
+    return GetValidityState(
+        nsIConstraintValidation::VALIDITY_STATE_PATTERN_MISMATCH);
+  }
+  bool TooLong() const {
+    return GetValidityState(nsIConstraintValidation::VALIDITY_STATE_TOO_LONG);
+  }
+  bool TooShort() const {
+    return GetValidityState(nsIConstraintValidation::VALIDITY_STATE_TOO_SHORT);
+  }
+  bool RangeUnderflow() const {
+    return GetValidityState(
+        nsIConstraintValidation::VALIDITY_STATE_RANGE_UNDERFLOW);
+  }
+  bool RangeOverflow() const {
+    return GetValidityState(
+        nsIConstraintValidation::VALIDITY_STATE_RANGE_OVERFLOW);
+  }
+  bool StepMismatch() const {
+    return GetValidityState(
+        nsIConstraintValidation::VALIDITY_STATE_STEP_MISMATCH);
+  }
+  bool BadInput() const {
+    return GetValidityState(nsIConstraintValidation::VALIDITY_STATE_BAD_INPUT);
+  }
+  bool CustomError() const {
+    return GetValidityState(
+        nsIConstraintValidation::VALIDITY_STATE_CUSTOM_ERROR);
+  }
+  bool Valid() const {
+    return !mConstraintValidation || mConstraintValidation->IsValid();
+  }
+
+ protected:
+  explicit ValidityState(nsIConstraintValidation* aConstraintValidation);
+
+  /**
+   * Helper function to get a validity state from constraint validation
+   * instance.
+   */
+  inline bool GetValidityState(
+      nsIConstraintValidation::ValidityStateType aState) const {
+    return mConstraintValidation &&
+           mConstraintValidation->GetValidityState(aState);
+  }
+
+  nsCOMPtr<nsIConstraintValidation> mConstraintValidation;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_ValidityState_h