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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-table-sorted-variable.c
* Copyright 2000, 2001, Ximian, Inc.
*
* Authors:
* Chris Lahey <clahey@ximian.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License, version 2, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include "gal/util/e-util.h"
#include "e-table-sorted-variable.h"
#include "e-table-sorting-utils.h"
#define d(x)
#define INCREMENT_AMOUNT 100
/* maximum insertions between an idle event that we will do without scheduling an idle sort */
#define ETSV_INSERT_MAX (4)
static ETableSubsetVariableClass *etsv_parent_class;
static void etsv_sort_info_changed (ETableSortInfo *info, ETableSortedVariable *etsv);
static void etsv_sort (ETableSortedVariable *etsv);
static void etsv_add (ETableSubsetVariable *etssv, gint row);
static void etsv_add_all (ETableSubsetVariable *etssv);
static void
etsv_dispose (GObject *object)
{
ETableSortedVariable *etsv = E_TABLE_SORTED_VARIABLE (object);
if (etsv->sort_info_changed_id)
g_signal_handler_disconnect (G_OBJECT (etsv->sort_info),
etsv->sort_info_changed_id);
etsv->sort_info_changed_id = 0;
if (etsv->sort_idle_id) {
g_source_remove(etsv->sort_idle_id);
etsv->sort_idle_id = 0;
}
if (etsv->insert_idle_id) {
g_source_remove(etsv->insert_idle_id);
etsv->insert_idle_id = 0;
}
if (etsv->sort_info)
g_object_unref(etsv->sort_info);
etsv->sort_info = NULL;
if (etsv->full_header)
g_object_unref(etsv->full_header);
etsv->full_header = NULL;
G_OBJECT_CLASS (etsv_parent_class)->dispose (object);
}
static void
etsv_class_init (GObjectClass *object_class)
{
ETableSubsetVariableClass *etssv_class = E_TABLE_SUBSET_VARIABLE_CLASS(object_class);
etsv_parent_class = g_type_class_peek_parent (object_class);
object_class->dispose = etsv_dispose;
etssv_class->add = etsv_add;
etssv_class->add_all = etsv_add_all;
}
static void
etsv_init (ETableSortedVariable *etsv)
{
etsv->full_header = NULL;
etsv->sort_info = NULL;
etsv->sort_info_changed_id = 0;
etsv->sort_idle_id = 0;
etsv->insert_count = 0;
}
E_MAKE_TYPE(e_table_sorted_variable, "ETableSortedVariable", ETableSortedVariable, etsv_class_init, etsv_init, E_TABLE_SUBSET_VARIABLE_TYPE)
static gboolean
etsv_sort_idle(ETableSortedVariable *etsv)
{
g_object_ref(etsv);
etsv_sort(etsv);
etsv->sort_idle_id = 0;
etsv->insert_count = 0;
g_object_unref(etsv);
return FALSE;
}
static gboolean
etsv_insert_idle(ETableSortedVariable *etsv)
{
etsv->insert_count = 0;
etsv->insert_idle_id = 0;
return FALSE;
}
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;
e_table_model_pre_change (etm);
if (etss->n_map + 1 > etssv->n_vals_allocated) {
etssv->n_vals_allocated += INCREMENT_AMOUNT;
etss->map_table = g_realloc (etss->map_table, (etssv->n_vals_allocated) * sizeof(int));
}
i = etss->n_map;
if (etsv->sort_idle_id == 0) {
/* this is to see if we're inserting a lot of things between idle loops.
If we are, we're busy, its faster to just append and perform a full sort later */
etsv->insert_count++;
if (etsv->insert_count > ETSV_INSERT_MAX) {
/* schedule a sort, and append instead */
etsv->sort_idle_id = g_idle_add_full(50, (GSourceFunc) etsv_sort_idle, etsv, NULL);
} else {
/* make sure we have an idle handler to reset the count every now and then */
if (etsv->insert_idle_id == 0) {
etsv->insert_idle_id = g_idle_add_full(40, (GSourceFunc) etsv_insert_idle, etsv, NULL);
}
i = e_table_sorting_utils_insert(etss->source, etsv->sort_info, etsv->full_header, etss->map_table, etss->n_map, row);
memmove(etss->map_table + i + 1, etss->map_table + i, (etss->n_map - i) * sizeof(int));
}
}
etss->map_table[i] = row;
etss->n_map++;
e_table_model_row_inserted (etm, i);
}
static void
etsv_add_all (ETableSubsetVariable *etssv)
{
ETableModel *etm = E_TABLE_MODEL(etssv);
ETableSubset *etss = E_TABLE_SUBSET(etssv);
ETableSortedVariable *etsv = E_TABLE_SORTED_VARIABLE (etssv);
int rows;
int i;
e_table_model_pre_change(etm);
rows = e_table_model_row_count(etss->source);
if (etss->n_map + rows > etssv->n_vals_allocated){
etssv->n_vals_allocated += MAX(INCREMENT_AMOUNT, rows);
etss->map_table = g_realloc (etss->map_table, etssv->n_vals_allocated * sizeof(int));
}
for (i = 0; i < rows; i++)
etss->map_table[etss->n_map++] = i;
if (etsv->sort_idle_id == 0) {
etsv->sort_idle_id = g_idle_add_full(50, (GSourceFunc) etsv_sort_idle, etsv, NULL);
}
e_table_model_changed (etm);
}
ETableModel *
e_table_sorted_variable_new (ETableModel *source, ETableHeader *full_header, ETableSortInfo *sort_info)
{
ETableSortedVariable *etsv = g_object_new (E_TABLE_SORTED_VARIABLE_TYPE, NULL);
ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE (etsv);
if (e_table_subset_variable_construct (etssv, source) == NULL){
g_object_unref (etsv);
return NULL;
}
etsv->sort_info = sort_info;
g_object_ref(etsv->sort_info);
etsv->full_header = full_header;
g_object_ref(etsv->full_header);
etsv->sort_info_changed_id = g_signal_connect (G_OBJECT (sort_info), "sort_info_changed",
G_CALLBACK (etsv_sort_info_changed), etsv);
return E_TABLE_MODEL(etsv);
}
static void
etsv_sort_info_changed (ETableSortInfo *info, ETableSortedVariable *etsv)
{
etsv_sort(etsv);
}
static void
etsv_sort(ETableSortedVariable *etsv)
{
ETableSubset *etss = E_TABLE_SUBSET(etsv);
static int reentering = 0;
if (reentering)
return;
reentering = 1;
e_table_model_pre_change(E_TABLE_MODEL(etsv));
e_table_sorting_utils_sort(etss->source, etsv->sort_info, etsv->full_header, etss->map_table, etss->n_map);
e_table_model_changed (E_TABLE_MODEL(etsv));
reentering = 0;
}
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