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/*
* E-table-sorted.c: Implements a table that sorts another table
*
* Author:
* Miguel de Icaza (miguel@gnu.org)
*
* (C) 1999 Helix Code, Inc.
*/
#include <config.h>
#include <stdlib.h>
#include "e-util.h"
#include "e-table-sorted.h"
#define PARENT_TYPE E_TABLE_SUBSET_TYPE
static ETableModelClass *ets_parent_class;
static void
ets_class_init (GtkObjectClass *klass)
{
ets_parent_class = gtk_type_class (PARENT_TYPE);
}
E_MAKE_TYPE(e_table_sorted, "ETableSorted", ETableSorted, ets_class_init, NULL, PARENT_TYPE);
static ETableSorted *sort_ets;
static int
my_sort (const void *a, const void *b)
{
ETableModel *source = E_TABLE_SUBSET (sort_ets)->source;
const int *ia = (const int *) a;
const int *ib = (const int *) b;
void *va, *vb;
va = e_table_model_value_at (source, sort_ets->sort_col, *ia);
vb = e_table_model_value_at (source, sort_ets->sort_col, *ib);
return (*sort_ets->compare) (va, vb);
}
static void
do_sort (ETableSorted *ets)
{
ETableSubset *etss = E_TABLE_SUBSET (ets);
g_assert (sort_ets == NULL);
sort_ets = ets;
qsort (etss->map_table, etss->n_map, sizeof (unsigned int), my_sort);
sort_ets = NULL;
}
ETableModel *
e_table_sorted_new (ETableModel *source, int col, GCompareFunc compare)
{
ETableSorted *ets = gtk_type_new (E_TABLE_SORTED_TYPE);
ETableSubset *etss = E_TABLE_SUBSET (ets);
const int nvals = e_table_model_row_count (source);
int i;
if (e_table_subset_construct (etss, source, nvals) == NULL){
gtk_object_destroy (GTK_OBJECT (ets));
return NULL;
}
ets->compare = compare;
ets->sort_col = col;
/* Init */
for (i = 0; i < nvals; i++)
etss->map_table [i] = i;
do_sort (ets);
return (ETableModel *) ets;
}
void
e_table_sorted_resort (ETableSorted *ets, int col, GCompareFunc compare)
{
if (col == -1 || compare == NULL)
do_sort (ets);
else {
ets->sort_col = col;
ets->compare = compare;
do_sort (ets);
}
}
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