1 files changed, 111 insertions, 0 deletions
diff --git a/dom/html/nsIConstraintValidation.h b/dom/html/nsIConstraintValidation.h
new file mode 100644
index 0000000000..14f7cee77f
--- /dev/null
+++ b/dom/html/nsIConstraintValidation.h
@@ -0,0 +1,111 @@
+/* -*- 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 nsIConstraintValidition_h___
+#define nsIConstraintValidition_h___
+
+#include "nsISupports.h"
+
+class nsIContent;
+
+namespace mozilla::dom {
+class ValidityState;
+}  // namespace mozilla::dom
+
+#define NS_ICONSTRAINTVALIDATION_IID                 \
+  {                                                  \
+    0x983829da, 0x1aaf, 0x449c, {                    \
+      0xa3, 0x06, 0x85, 0xd4, 0xf0, 0x31, 0x1c, 0xf6 \
+    }                                                \
+  }
+
+/**
+ * This interface is for form elements implementing the validity constraint API.
+ * See: http://dev.w3.org/html5/spec/forms.html#the-constraint-validation-api
+ *
+ * This interface has to be implemented by all elements implementing the API
+ * and only them.
+ */
+class nsIConstraintValidation : public nsISupports {
+ public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICONSTRAINTVALIDATION_IID);
+
+  friend class mozilla::dom::ValidityState;
+
+  static const uint16_t sContentSpecifiedMaxLengthMessage;
+
+  virtual ~nsIConstraintValidation();
+
+  bool IsValid() const { return mValidityBitField == 0; }
+
+  bool IsCandidateForConstraintValidation() const {
+    return !mBarredFromConstraintValidation;
+  }
+
+  enum ValidityStateType {
+    VALIDITY_STATE_VALUE_MISSING = 0x1 << 0,
+    VALIDITY_STATE_TYPE_MISMATCH = 0x1 << 1,
+    VALIDITY_STATE_PATTERN_MISMATCH = 0x1 << 2,
+    VALIDITY_STATE_TOO_LONG = 0x1 << 3,
+    VALIDITY_STATE_TOO_SHORT = 0x1 << 4,
+    VALIDITY_STATE_RANGE_UNDERFLOW = 0x1 << 5,
+    VALIDITY_STATE_RANGE_OVERFLOW = 0x1 << 6,
+    VALIDITY_STATE_STEP_MISMATCH = 0x1 << 7,
+    VALIDITY_STATE_BAD_INPUT = 0x1 << 8,
+    VALIDITY_STATE_CUSTOM_ERROR = 0x1 << 9,
+  };
+
+  void SetValidityState(ValidityStateType aState, bool aValue);
+
+  /**
+   * Check the validity of this object. If it is not valid, file a "invalid"
+   * event on the aEventTarget.
+   *
+   * @param aEventTarget   The target of the event.
+   * @param aDefaultAction Set to true if default action should be taken,
+   *                       see EventTarget::DispatchEvent.
+   * @return whether it's valid.
+   */
+  bool CheckValidity(nsIContent& aEventTarget,
+                     bool* aEventDefaultAction = nullptr) const;
+
+  // Web IDL binding methods
+  bool WillValidate() const { return IsCandidateForConstraintValidation(); }
+  mozilla::dom::ValidityState* Validity();
+  bool ReportValidity();
+
+ protected:
+  // You can't instantiate an object from that class.
+  nsIConstraintValidation();
+
+  bool GetValidityState(ValidityStateType aState) const {
+    return mValidityBitField & aState;
+  }
+
+  void SetBarredFromConstraintValidation(bool aBarred);
+
+  /**
+   * A pointer to the ValidityState object.
+   */
+  RefPtr<mozilla::dom::ValidityState> mValidity;
+
+ private:
+  /**
+   * A bitfield representing the current validity state of the element.
+   * Each bit represent an error. All bits to zero means the element is valid.
+   */
+  int16_t mValidityBitField;
+
+  /**
+   * Keeps track whether the element is barred from constraint validation.
+   */
+  bool mBarredFromConstraintValidation;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsIConstraintValidation,
+                              NS_ICONSTRAINTVALIDATION_IID)
+
+#endif  // nsIConstraintValidation_h___