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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* 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 <gtk/gtksignal.h>
#include <string.h>
#include "e-util/e-util.h"
#include "e-table-sorted-variable.h"
#define PARENT_TYPE E_TABLE_SUBSET_VARIABLE_TYPE
#define INCREMENT_AMOUNT 10
static ETableSubsetVariableClass *etsv_parent_class;
static void etsv_proxy_model_changed (ETableModel *etm, ETableSortedVariable *etsv);
static void etsv_proxy_model_row_changed (ETableModel *etm, int row, ETableSortedVariable *etsv);
static void etsv_proxy_model_cell_changed (ETableModel *etm, int col, int row, ETableSortedVariable *etsv);
static void etsv_sort_info_changed (ETableSortInfo *info, ETableSortedVariable *etsv);
static void etsv_add (ETableSubsetVariable *etssv, gint row);
static void
etsv_destroy (GtkObject *object)
{
ETableSortedVariable *etsv = E_TABLE_SORTED_VARIABLE (object);
ETableSubset *etss = E_TABLE_SUBSET (object);
gtk_signal_disconnect (GTK_OBJECT (etss->source),
etsv->table_model_changed_id);
gtk_signal_disconnect (GTK_OBJECT (etss->source),
etsv->table_model_row_changed_id);
gtk_signal_disconnect (GTK_OBJECT (etss->source),
etsv->table_model_cell_changed_id);
gtk_signal_disconnect (GTK_OBJECT (etsv->sort_info),
etsv->sort_info_changed_id);
etsv->table_model_changed_id = 0;
etsv->table_model_row_changed_id = 0;
etsv->table_model_cell_changed_id = 0;
if (etsv->sort_info)
gtk_object_unref(GTK_OBJECT(etsv->sort_info));
if (etsv->full_header)
gtk_object_unref(GTK_OBJECT(etsv->full_header));
GTK_OBJECT_CLASS (etsv_parent_class)->destroy (object);
}
static void
etsv_class_init (GtkObjectClass *object_class)
{
ETableSubsetVariableClass *etssv_class = E_TABLE_SUBSET_VARIABLE_CLASS(object_class);
etsv_parent_class = gtk_type_class (PARENT_TYPE);
object_class->destroy = etsv_destroy;
etssv_class->add = etsv_add;
}
E_MAKE_TYPE(e_table_sorted_variable, "ETableSortedVariable", ETableSortedVariable, etsv_class_init, NULL, PARENT_TYPE);
static void
etsv_add (ETableSubsetVariable *etssv,
gint row)
{
ETableModel *etm = E_TABLE_MODEL(etssv);
ETableSubset *etss = E_TABLE_SUBSET(etssv);
ETableSortedVariable *etsv = E_TABLE_SORTED_VARIABLE(etssv);
int i;
ETableCol *last_col = NULL;
void *val = NULL;
/* FIXME: binary search anyone? */
for (i = 0; i < etss->n_map; i++){
int j;
int sort_count = e_table_sort_info_sorting_get_count(etsv->sort_info);
int comp_val = 0;
int ascending = 1;
for (j = 0; j < sort_count; j++) {
ETableSortColumn column = e_table_sort_info_sorting_get_nth(etsv->sort_info, j);
ETableCol *col;
if (column.column > e_table_header_count (etsv->full_header))
col = e_table_header_get_columns (etsv->full_header)[e_table_header_count (etsv->full_header) - 1];
else
col = e_table_header_get_columns (etsv->full_header)[column.column];
if (last_col != col)
val = e_table_model_value_at (etss->source, col->col_idx, row);
last_col = col;
comp_val = (*col->compare)(val, e_table_model_value_at (etss->source, col->col_idx, etss->map_table[i]));
ascending = column.ascending;
if (comp_val != 0)
break;
}
if (((ascending && comp_val < 0) || ((!ascending) && comp_val > 0)))
break;
if (comp_val == 0)
if ((ascending && row < etss->map_table[i]) || ((!ascending) && row > etss->map_table[i]))
break;
}
if (etss->n_map + 1 > etssv->n_vals_allocated){
etss->map_table = g_realloc (etss->map_table, (etssv->n_vals_allocated + INCREMENT_AMOUNT) * sizeof(int));
etssv->n_vals_allocated += INCREMENT_AMOUNT;
}
if (i < etss->n_map)
memmove (etss->map_table + i + 1, etss->map_table + i, (etss->n_map - i) * sizeof(int));
etss->map_table[i] = row;
etss->n_map++;
if (!etm->frozen)
e_table_model_changed (etm);
}
ETableModel *
e_table_sorted_variable_new (ETableModel *source, ETableHeader *full_header, ETableSortInfo *sort_info)
{
ETableSortedVariable *etsv = gtk_type_new (E_TABLE_SORTED_VARIABLE_TYPE);
ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE (etsv);
if (e_table_subset_variable_construct (etssv, source) == NULL){
gtk_object_destroy (GTK_OBJECT (etsv));
return NULL;
}
etsv->sort_info = sort_info;
gtk_object_ref(GTK_OBJECT(etsv->sort_info));
etsv->full_header = full_header;
gtk_object_ref(GTK_OBJECT(etsv->full_header));
etsv->table_model_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_changed",
GTK_SIGNAL_FUNC (etsv_proxy_model_changed), etsv);
etsv->table_model_row_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_row_changed",
GTK_SIGNAL_FUNC (etsv_proxy_model_row_changed), etsv);
etsv->table_model_cell_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_cell_changed",
GTK_SIGNAL_FUNC (etsv_proxy_model_cell_changed), etsv);
etsv->sort_info_changed_id = gtk_signal_connect (GTK_OBJECT (sort_info), "sort_info_changed",
GTK_SIGNAL_FUNC (etsv_sort_info_changed), etsv);
return E_TABLE_MODEL(etsv);
}
static void
etsv_proxy_model_changed (ETableModel *etm, ETableSortedVariable *etsv)
{
if (!E_TABLE_MODEL(etsv)->frozen){
/* FIXME: do_resort (); */
}
}
static void
etsv_proxy_model_row_changed (ETableModel *etm, int row, ETableSortedVariable *etsv)
{
ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE(etsv);
if (!E_TABLE_MODEL(etsv)->frozen){
if (e_table_subset_variable_remove(etssv, row))
e_table_subset_variable_add (etssv, row);
}
}
static void
etsv_proxy_model_cell_changed (ETableModel *etm, int col, int row, ETableSortedVariable *etsv)
{
ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE(etsv);
if (!E_TABLE_MODEL(etsv)->frozen){
if (e_table_subset_variable_remove(etssv, row))
e_table_subset_variable_add (etssv, row);
}
}
static ETableSortedVariable *etsv_closure;
static int
qsort_callback(const void *data1, const void *data2)
{
int j;
int comp_val = 0;
int ascending = 1;
int sort_count = e_table_sort_info_sorting_get_count(etsv_closure->sort_info);
int row1 = *(int *)data1;
int row2 = *(int *)data2;
while(gtk_events_pending())
gtk_main_iteration();
for (j = 0; j < sort_count; j++) {
ETableSortColumn column = e_table_sort_info_sorting_get_nth(etsv_closure->sort_info, j);
ETableCol *col;
void *val;
if (column.column > e_table_header_count (etsv_closure->full_header))
col = e_table_header_get_columns (etsv_closure->full_header)[e_table_header_count (etsv_closure->full_header) - 1];
else
col = e_table_header_get_columns (etsv_closure->full_header)[column.column];
val = e_table_model_value_at (E_TABLE_SUBSET(etsv_closure)->source, col->col_idx, row1);
comp_val = (*col->compare)(val, e_table_model_value_at (E_TABLE_SUBSET(etsv_closure)->source, col->col_idx, row2));
ascending = column.ascending;
if (comp_val != 0)
break;
}
if (((ascending && comp_val < 0) || ((!ascending) && comp_val > 0)))
return -1;
if (comp_val == 0)
if ((ascending && row1 < row2) || ((!ascending) && row1 > row2))
return -1;
return 1;
}
static void
etsv_sort_info_changed (ETableSortInfo *info, ETableSortedVariable *etsv)
{
etsv_closure = etsv;
qsort(E_TABLE_SUBSET(etsv)->map_table, E_TABLE_SUBSET(etsv)->n_map, sizeof(int), qsort_callback);
e_table_model_changed (E_TABLE_MODEL(etsv));
}
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