+class DocIterator;
+class FuncRequest;
+class Text;
+
+/** Encode the parameters needed to find \c search as a string
+ * that can be dispatched to the LyX core in a FuncRequest wrapper.
+ */
+docstring const find2string(docstring const & search,
+ bool casesensitive,
+ bool matchword,
+ bool forward);
+
+/** Encode the parameters needed to replace \c search with \c replace
+ * as a string that can be dispatched to the LyX core in a FuncRequest
+ * wrapper.
+ */
+docstring const replace2string(docstring const & replace,
+ docstring const & search,
+ bool casesensitive,
+ bool matchword,
+ bool all,
+ bool forward);
+
+/** Parse the string encoding of the find request that is found in
+ * \c ev.argument and act on it.
+ * The string is encoded by \c find2string.
+ * \return true if the string was found.
+ */
+bool find(BufferView * bv, FuncRequest const & ev);
+
+/** Parse the string encoding of the replace request that is found in
+ * \c ev.argument and act on it.
+ * The string is encoded by \c replace2string.
+ */
+void replace(BufferView * bv, FuncRequest const &, bool has_deleted = false);
+
+/// find the next change in the buffer
+bool findNextChange(BufferView * bv);
+
+/// find the previous change in the buffer
+bool findPreviousChange(BufferView * bv);
+
+/// find the change in the buffer
+/// \param next true to find the next change, otherwise the previous
+bool findChange(BufferView * bv, bool next);
+
+// Hopefully, nobody will ever replace with something like this
+#define LYX_FR_NULL_STRING "__LYX__F&R__NULL__STRING__"
+
+class FindAndReplaceOptions {
+public:
+ typedef enum {
+ S_BUFFER,
+ S_DOCUMENT,
+ S_OPEN_BUFFERS,
+ /*S_ALL_MANUALS*/
+ } SearchScope;
+ FindAndReplaceOptions(
+ docstring const & search,
+ bool casesensitive,
+ bool matchword,
+ bool forward,
+ bool expandmacros,
+ bool ignoreformat,
+ bool regexp,
+ docstring const & replace,
+ bool keep_case,
+ SearchScope scope = S_BUFFER
+ );
+ FindAndReplaceOptions() { }
+ docstring search;
+ bool casesensitive;
+ bool matchword;
+ bool forward;
+ bool expandmacros;
+ bool ignoreformat;
+ bool regexp;
+ docstring replace;
+ bool keep_case;
+ SearchScope scope;
+};
+
+/// Write a FindAdvOptions instance to a stringstream
+std::ostringstream & operator<<(std::ostringstream & os, lyx::FindAndReplaceOptions const & opt);
+
+/// Read a FindAdvOptions instance from a stringstream
+std::istringstream & operator>>(std::istringstream & is, lyx::FindAndReplaceOptions & opt);