1 files changed, 94 insertions, 1 deletions
diff --git a/desktop/browser_private.h b/desktop/browser_private.h
index 5a53e2f0b..8bbc573eb 100644
--- a/desktop/browser_private.h
+++ b/desktop/browser_private.h
@@ -35,8 +35,48 @@
 struct box;
 struct hlcache_handle;
 struct gui_window;
-struct history;
 struct selection;
+struct nsurl;
+
+/**
+ * history entry page information
+ */
+struct history_page {
+	struct nsurl *url;    /**< Page URL, never NULL. */
+	lwc_string *frag_id; /** Fragment identifier, or NULL. */
+	char *title;  /**< Page title, never NULL. */
+};
+
+/**
+ * A node in the history tree.
+ */
+struct history_entry {
+	struct history_page page;
+	struct history_entry *back;  /**< Parent. */
+	struct history_entry *next;  /**< Next sibling. */
+	struct history_entry *forward;  /**< First child. */
+	struct history_entry *forward_pref;  /**< Child in direction of
+						  current entry. */
+	struct history_entry *forward_last;  /**< Last child. */
+	unsigned int children;  /**< Number of children. */
+	int x;  /**< Position of node. */
+	int y;  /**< Position of node. */
+	struct bitmap *bitmap;  /**< Thumbnail bitmap, or 0. */
+};
+
+/**
+ * History tree for a window.
+ */
+struct history {
+	/** First page in tree (page that window opened with). */
+	struct history_entry *start;
+	/** Current position in tree. */
+	struct history_entry *current;
+	/** Width of layout. */
+	int width;
+	/** Height of layout. */
+	int height;
+};
 
 /**
  * Browser window data.
@@ -249,4 +289,57 @@ void browser_window_set_status(struct browser_window *bw, const char *text);
  */
 struct browser_window * browser_window_get_root(struct browser_window *bw);
 
+
+/**
+ * Create a new history tree for a browser window window.
+ *
+ * \param bw browser window to create history for.
+ *
+ * \return NSERROR_OK or appropriate error otherwise
+ */
+nserror browser_window_history_create(struct browser_window *bw);
+
+/**
+ * Clone a bw's history tree for new bw
+ *
+ * \param  existing	browser window with history to clone.
+ * \param  clone	browser window to make cloned history for.
+ *
+ * \return  NSERROR_OK or appropriate error otherwise
+ */
+nserror browser_window_history_clone(const struct browser_window *existing,
+		struct browser_window *clone);
+
+
+/**
+ * Insert a url into the history tree.
+ *
+ * \param  bw       browser window with history object
+ * \param  content  content to add to history
+ * \param  frag_id  fragment identifier, or NULL.
+ * \return NSERROR_OK or error code on faliure.
+ *
+ * The page is added after the current entry and becomes current.
+ */
+nserror browser_window_history_add(struct browser_window *bw,
+		struct hlcache_handle *content, lwc_string *frag_id);
+
+/**
+ * Update the thumbnail for the current entry.
+ *
+ * \param bw The browser window to update the history within.
+ * \param content content for current entry
+ * \return NSERROR_OK or error code on faliure.
+ */
+nserror browser_window_history_update(struct browser_window *bw,
+		struct hlcache_handle *content);
+
+/**
+ * Free a history structure.
+ *
+ * \param bw The browser window to destroy the history within.
+ */
+void browser_window_history_destroy(struct browser_window *bw);
+
+
 #endif