1 files changed, 43 insertions, 0 deletions
diff --git a/dom/html/nsIRadioVisitor.h b/dom/html/nsIRadioVisitor.h
new file mode 100644
index 000000000..425a50692
--- /dev/null
+++ b/dom/html/nsIRadioVisitor.h
@@ -0,0 +1,43 @@
+/* -*- 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 nsIRadioVisitor_h___
+#define nsIRadioVisitor_h___
+
+#include "nsISupports.h"
+class nsIFormControl;
+
+// IID for the nsIRadioControl interface
+#define NS_IRADIOVISITOR_IID \
+{ 0xc6bed232, 0x1181, 0x4ab2, \
+  { 0xa1, 0xda, 0x55, 0xc2, 0x13, 0x6d, 0xea, 0x3d } }
+
+/**
+ * This interface is used for the text control frame to store its value away
+ * into the content.
+ */
+class nsIRadioVisitor : public nsISupports {
+public:
+
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IRADIOVISITOR_IID)
+
+  /**
+   * Visit a node in the tree.  This is meant to be called on all radios in a
+   * group, sequentially.  (Each radio group implementor may define
+   * sequentially in their own way, it just has to be the same every time.)
+   * Currently all radio groups are ordered in the order they appear in the
+   * document.  Radio group implementors should honor the return value of the
+   * method and stop iterating if the return value is false.
+   *
+   * @param aRadio the radio button in question (must be nullptr and QI'able to
+   *               nsIRadioControlElement)
+   */
+  virtual bool Visit(nsIFormControl* aRadio) = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsIRadioVisitor, NS_IRADIOVISITOR_IID)
+
+#endif // nsIRadioVisitor_h___