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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_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);
etsv->table_model_changed_id = 0;
etsv->table_model_row_changed_id = 0;
etsv->table_model_cell_changed_id = 0;
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;
int col = etsv->sort_col;
GCompareFunc comp = etsv->compare;
gint ascending = etsv->ascending;
void *val = e_table_model_value_at(etss->source, col, row);
/* FIXME: binary search anyone? */
for ( i = 0; i < etss->n_map; i++ ) {
int comp_val = (*comp)(val, e_table_model_value_at(etss->source, col, etss->map_table[i]));
if ( (ascending && comp_val < 0) || ((!ascending) && comp_val > 0) )
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, int col, int ascending, GCompareFunc compare)
{
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_col = col;
etsv->ascending = ascending;
etsv->compare = compare;
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);
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 ( col == etsv->sort_col ) {
if(e_table_subset_variable_remove(etssv, row))
e_table_subset_variable_add(etssv, row);
}
}
}
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