1 files changed, 31 insertions, 0 deletions
diff --git a/src/sortlist_type.h b/src/sortlist_type.h
new file mode 100644
index 000000000..a3e428554
--- /dev/null
+++ b/src/sortlist_type.h
@@ -0,0 +1,31 @@
+/* $Id$ */
+
+/** @file sortlist_type.h Base types for having sorted lists in GUIs. */
+
+#ifndef SORTLIST_TYPE_H
+#define SORTLIST_TYPE_H
+
+enum SortListFlags {
+	VL_NONE    = 0,      ///< no sort
+	VL_DESC    = 1 << 0, ///< sort descending or ascending
+	VL_RESORT  = 1 << 1, ///< instruct the code to resort the list in the next loop
+	VL_REBUILD = 1 << 2, ///< create sort-listing to use for qsort and friends
+	VL_END     = 1 << 3,
+};
+DECLARE_ENUM_AS_BIT_SET(SortListFlags);
+
+struct Listing {
+	bool order;    ///< Ascending/descending
+	byte criteria; ///< Sorting criteria
+};
+
+template <typename T>
+struct GUIList {
+	T* sort_list;        ///< The items to sort.
+	SortListFlags flags; ///< used to control sorting/resorting/etc.
+	uint16 list_length;  ///< length of the list being sorted
+	uint16 resort_timer; ///< resort list after a given amount of ticks if set
+	byte sort_type;      ///< what criteria to sort on
+};
+
+#endif /* SORTLIST_TYPE_H */