MODULE test_expr ;

(*
   m2-GTK4 test - expressions and the expression-based sorters/filters.

   Builds a property expression over GtkStringObjects, uses it in a
   GtkStringSorter and a GtkStringFilter, and checks sorting/filtering
   through the list models.  Requires GTK initialised (and so a display).
*)

FROM Gtk IMPORT gtk_init;
FROM GtkExpression IMPORT gtk_property_expression_new;
FROM GtkStringSorter IMPORT gtk_string_sorter_new,
   gtk_string_sorter_set_ignore_case, gtk_string_sorter_get_ignore_case,
   gtk_string_sorter_set_collation, gtk_string_sorter_get_collation;
FROM GtkNumericSorter IMPORT gtk_numeric_sorter_new,
   gtk_numeric_sorter_set_sort_order, gtk_numeric_sorter_get_sort_order,
   GtkSortDescending;
FROM GtkStringFilter IMPORT gtk_string_filter_new,
   gtk_string_filter_set_match_mode, gtk_string_filter_get_match_mode,
   gtk_string_filter_set_search, GtkStringFilterSubstring;
FROM GtkBoolFilter IMPORT gtk_bool_filter_new, gtk_bool_filter_set_invert,
   gtk_bool_filter_get_invert;
FROM GtkStringList IMPORT gtk_string_list_new, gtk_string_list_append;
FROM GtkStringObject IMPORT gtk_string_object_get_type,
   gtk_string_object_get_string;
FROM GtkSortListModel IMPORT gtk_sort_list_model_new;
FROM GtkFilterListModel IMPORT gtk_filter_list_model_new;
FROM GListModel IMPORT g_list_model_get_n_items, g_list_model_get_item;
FROM GObject IMPORT g_object_ref, g_object_unref;
FROM GtkUtils IMPORT CStrToM2;
FROM SYSTEM IMPORT ADDRESS, ADR;
FROM libc IMPORT printf;

VAR
   failed: BOOLEAN;

PROCEDURE Check (condition: BOOLEAN; what: ARRAY OF CHAR);
BEGIN
   IF NOT condition THEN
      printf("FAIL: %s\n", what);
      failed := TRUE
   END
END Check;

VAR
   expr, sorter, nsorter, filter, boolf, list, sortModel, filterModel,
   item: ADDRESS;
   buf: ARRAY [0..31] OF CHAR;
BEGIN
   failed := FALSE;
   gtk_init();

   expr := gtk_property_expression_new(gtk_string_object_get_type(), NIL,
                                       "string", NIL);
   Check(expr # NIL, "property expression");

   sorter := gtk_string_sorter_new(expr);
   gtk_string_sorter_set_ignore_case(sorter, 1);
   Check(gtk_string_sorter_get_ignore_case(sorter) # 0, "sorter ignore case");
   gtk_string_sorter_set_collation(sorter, 0);
   Check(gtk_string_sorter_get_collation(sorter) = 0, "sorter collation");

   nsorter := gtk_numeric_sorter_new(NIL);
   gtk_numeric_sorter_set_sort_order(nsorter, GtkSortDescending);
   Check(gtk_numeric_sorter_get_sort_order(nsorter) = GtkSortDescending,
         "numeric sort order");

   filter := gtk_string_filter_new(expr);
   gtk_string_filter_set_match_mode(filter, GtkStringFilterSubstring);
   Check(gtk_string_filter_get_match_mode(filter) = GtkStringFilterSubstring,
         "filter match mode");

   boolf := gtk_bool_filter_new(NIL);
   gtk_bool_filter_set_invert(boolf, 1);
   Check(gtk_bool_filter_get_invert(boolf) # 0, "bool filter invert");

   list := gtk_string_list_new(NIL);
   gtk_string_list_append(list, "banana");
   gtk_string_list_append(list, "apple");
   gtk_string_list_append(list, "cherry");

   (* sorting: apple < banana < cherry *)
   sortModel := gtk_sort_list_model_new(g_object_ref(list), sorter);
   Check(g_list_model_get_n_items(sortModel) = 3, "sorted count");
   item := g_list_model_get_item(sortModel, 0);
   CStrToM2(gtk_string_object_get_string(item), buf);
   Check(buf[0] = 'a', "sorted first is apple");
   g_object_unref(item);

   (* filtering: only "banana" contains "an" *)
   gtk_string_filter_set_search(filter, "an");
   filterModel := gtk_filter_list_model_new(g_object_ref(list), filter);
   Check(g_list_model_get_n_items(filterModel) = 1, "filtered count");

   IF failed THEN
      printf("test_expr: FAIL\n");
      HALT(1)
   ELSE
      printf("test_expr: PASS\n");
      HALT(0)
   END
END test_expr.