1 files changed, 62 insertions, 0 deletions
diff --git a/toolkit/components/find/nsFind.h b/toolkit/components/find/nsFind.h
new file mode 100644
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+++ b/toolkit/components/find/nsFind.h
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+/* -*- 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 nsFind_h__
+#define nsFind_h__
+
+#include "nsIFind.h"
+
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsINode.h"
+
+#define NS_FIND_CONTRACTID "@mozilla.org/embedcomp/rangefind;1"
+
+#define NS_FIND_CID                                  \
+  {                                                  \
+    0x471f4944, 0x1dd2, 0x11b2, {                    \
+      0x87, 0xac, 0x90, 0xbe, 0x0a, 0x51, 0xd6, 0x09 \
+    }                                                \
+  }
+
+class nsFind : public nsIFind {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_NSIFIND
+  NS_DECL_CYCLE_COLLECTION_CLASS(nsFind)
+
+ protected:
+  virtual ~nsFind() = default;
+
+  // Parameters set from the interface:
+  bool mFindBackward = false;
+  bool mCaseSensitive = false;
+  bool mMatchDiacritics = false;
+
+  // Use "find entire words" mode by setting mEntireWord to true; or false to
+  // disable "entire words" mode.
+  bool mEntireWord = false;
+
+  struct State;
+  class StateRestorer;
+
+  // Extract a character from a string, handling surrogate pairs and
+  // incrementing the index if a surrogate pair is encountered
+  char32_t DecodeChar(const char16_t* t2b, int32_t* index) const;
+
+  // Determine if a line break can occur between two characters
+  //
+  // This could be improved because some languages require more context than two
+  // characters to determine where line breaks can occur
+  bool BreakInBetween(char32_t x, char32_t y) const;
+
+  // Get the first character from the next node (last if mFindBackward).
+  //
+  // This will mutate the state, but then restore it afterwards.
+  char32_t PeekNextChar(State&, bool aAlreadyMatching) const;
+};
+
+#endif  // nsFind_h__