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diff --git a/content/textsearch.h b/content/textsearch.h
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+++ b/content/textsearch.h
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+/*
+ * Copyright 2009 Mark Benjamin <netsurf-browser.org.MarkBenjamin@dfgh.net>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * \file
+ * Interface to HTML searching.
+ */
+
+#ifndef NETSURF_CONTENT_SEARCH_H
+#define NETSURF_CONTENT_SEARCH_H
+
+#include <ctype.h>
+#include <string.h>
+
+#include "desktop/search.h"
+
+struct textsearch_context;
+struct content;
+
+/**
+ * create a search_context
+ *
+ * \param c The content the search_context is connected to
+ * \param context A context pointer passed to the provider routines.
+ * \param search_out A pointer to recive the new text search context
+ * \return NSERROR_OK on success and \a search_out updated else error code
+ */
+nserror content_textsearch_create(struct content *c, void *context, struct textsearch_context **textsearch_out);
+
+/**
+ * Begins/continues the search process
+ *
+ * \note that this may be called many times for a single search.
+ *
+ * \param context The search context in use.
+ * \param flags   The flags forward/back etc
+ * \param string  The string to match
+ */
+nserror content_textsearch_step(struct textsearch_context *textsearch, search_flags_t flags, const char *string);
+
+/**
+ * Ends the search process, invalidating all state freeing the list of
+ * found boxes.
+ */
+nserror content_textsearch_destroy(struct textsearch_context *textsearch);
+
+/**
+ * Determines whether any portion of the given text box should be
+ * selected because it matches the current search string.
+ *
+ * \param textsearch The search context to hilight entries from.
+ * \param c The content to highlight within.
+ * \param start_offset byte offset within text of string to be checked
+ * \param end_offset   byte offset within text
+ * \param start_idx    byte offset within string of highlight start
+ * \param end_idx      byte offset of highlight end
+ * \return true iff part of the box should be highlighted
+ */
+bool content_textsearch_ishighlighted(struct textsearch_context *textsearch,
+				      unsigned start_offset,
+				      unsigned end_offset,
+				      unsigned *start_idx,
+				      unsigned *end_idx);
+
+#endif