/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-table-sort-info.c
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <config.h>
#include <string.h>
#include "e-util/e-util.h"
#include "e-util/e-xml-utils.h"
#include "e-table-sort-info.h"
#define ETM_CLASS(e) (E_TABLE_SORT_INFO_GET_CLASS (e))
G_DEFINE_TYPE (ETableSortInfo , e_table_sort_info, G_TYPE_OBJECT)
enum {
SORT_INFO_CHANGED,
GROUP_INFO_CHANGED,
LAST_SIGNAL
};
static guint e_table_sort_info_signals [LAST_SIGNAL] = { 0, };
static void
etsi_finalize (GObject *object)
{
ETableSortInfo *etsi = E_TABLE_SORT_INFO (object);
if (etsi->groupings)
g_free(etsi->groupings);
etsi->groupings = NULL;
if (etsi->sortings)
g_free(etsi->sortings);
etsi->sortings = NULL;
G_OBJECT_CLASS (e_table_sort_info_parent_class)->finalize (object);
}
static void
e_table_sort_info_init (ETableSortInfo *info)
{
info->group_count = 0;
info->groupings = NULL;
info->sort_count = 0;
info->sortings = NULL;
info->frozen = 0;
info->sort_info_changed = 0;
info->group_info_changed = 0;
info->can_group = 1;
}
static void
e_table_sort_info_class_init (ETableSortInfoClass *klass)
{
GObjectClass * object_class = G_OBJECT_CLASS (klass);
e_table_sort_info_parent_class = g_type_class_peek_parent (klass);
object_class->finalize = etsi_finalize;
e_table_sort_info_signals [SORT_INFO_CHANGED] =
g_signal_new ("sort_info_changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ETableSortInfoClass, sort_info_changed),
(GSignalAccumulator) NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
e_table_sort_info_signals [GROUP_INFO_CHANGED] =
g_signal_new ("group_info_changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ETableSortInfoClass, group_info_changed),
(GSignalAccumulator) NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
klass->sort_info_changed = NULL;
klass->group_info_changed = NULL;
}
static void
e_table_sort_info_sort_info_changed (ETableSortInfo *info)
{
g_return_if_fail (info != NULL);
g_return_if_fail (E_IS_TABLE_SORT_INFO (info));
if (info->frozen) {
info->sort_info_changed = 1;
} else {
g_signal_emit (G_OBJECT (info), e_table_sort_info_signals [SORT_INFO_CHANGED], 0);
}
}
static void
e_table_sort_info_group_info_changed (ETableSortInfo *info)
{
g_return_if_fail (info != NULL);
g_return_if_fail (E_IS_TABLE_SORT_INFO (info));
if (info->frozen) {
info->group_info_changed = 1;
} else {
g_signal_emit (G_OBJECT (info), e_table_sort_info_signals [GROUP_INFO_CHANGED], 0);
}
}
/**
* e_table_sort_info_freeze:
* @info: The ETableSortInfo object
*
* This functions allows the programmer to cluster various changes to the
* ETableSortInfo (grouping and sorting) without having the object emit
* "group_info_changed" or "sort_info_changed" signals on each change.
*
* To thaw, invoke the e_table_sort_info_thaw() function, which will
* trigger any signals that might have been queued.
*/
void
e_table_sort_info_freeze (ETableSortInfo *info)
{
info->frozen++;
}
/**
* e_table_sort_info_thaw:
* @info: The ETableSortInfo object
*
* This functions allows the programmer to cluster various changes to the
* ETableSortInfo (grouping and sorting) without having the object emit
* "group_info_changed" or "sort_info_changed" signals on each change.
*
* This function will flush any pending signals that might be emited by
* this object.
*/
void
e_table_sort_info_thaw (ETableSortInfo *info)
{
info->frozen--;
if (info->frozen != 0)
return;
if (info->sort_info_changed) {
info->sort_info_changed = 0;
e_table_sort_info_sort_info_changed(info);
}
if (info->group_info_changed) {
info->group_info_changed = 0;
e_table_sort_info_group_info_changed(info);
}
}
/**
* e_table_sort_info_grouping_get_count:
* @info: The ETableSortInfo object
*
* Returns: the number of grouping criteria in the object.
*/
guint
e_table_sort_info_grouping_get_count (ETableSortInfo *info)
{
if (info->can_group)
return info->group_count;
else
return 0;
}
static void
e_table_sort_info_grouping_real_truncate (ETableSortInfo *info, int length)
{
if (length < info->group_count) {
info->group_count = length;
}
if (length > info->group_count) {
info->groupings = g_realloc(info->groupings, length * sizeof(ETableSortColumn));
info->group_count = length;
}
}
/**
* e_table_sort_info_grouping_truncate:
* @info: The ETableSortInfo object
* @lenght: position where the truncation happens.
*
* This routine can be used to reduce or grow the number of grouping
* criteria in the object.
*/
void
e_table_sort_info_grouping_truncate (ETableSortInfo *info, int length)
{
e_table_sort_info_grouping_real_truncate(info, length);
e_table_sort_info_group_info_changed(info);
}
/**
* e_table_sort_info_grouping_get_nth:
* @info: The ETableSortInfo object
* @n: Item information to fetch.
*
* Returns: the description of the @n-th grouping criteria in the @info object.
*/
ETableSortColumn
e_table_sort_info_grouping_get_nth (ETableSortInfo *info, int n)
{
if (info->can_group && n < info->group_count) {
return info->groupings[n];
} else {
ETableSortColumn fake = {0, 0};
return fake;
}
}
/**
* e_table_sort_info_grouping_set_nth:
* @info: The ETableSortInfo object
* @n: Item information to fetch.
* @column: new values for the grouping
*
* Sets the grouping criteria for index @n to be given by @column (a column number and
* whether it is ascending or descending).
*/
void
e_table_sort_info_grouping_set_nth (ETableSortInfo *info, int n, ETableSortColumn column)
{
if (n >= info->group_count) {
e_table_sort_info_grouping_real_truncate(info, n + 1);
}
info->groupings[n] = column;
e_table_sort_info_group_info_changed(info);
}
/**
* e_table_sort_info_get_count:
* @info: The ETableSortInfo object
*
* Returns: the number of sorting criteria in the object.
*/
guint
e_table_sort_info_sorting_get_count (ETableSortInfo *info)
{
return info->sort_count;
}
static void
e_table_sort_info_sorting_real_truncate (ETableSortInfo *info, int length)
{
if (length < info->sort_count) {
info->sort_count = length;
}
if (length > info->sort_count) {
info->sortings = g_realloc(info->sortings, length * sizeof(ETableSortColumn));
info->sort_count = length;
}
}
/**
* e_table_sort_info_sorting_truncate:
* @info: The ETableSortInfo object
* @lenght: position where the truncation happens.
*
* This routine can be used to reduce or grow the number of sort
* criteria in the object.
*/
void
e_table_sort_info_sorting_truncate (ETableSortInfo *info, int length)
{
e_table_sort_info_sorting_real_truncate (info, length);
e_table_sort_info_sort_info_changed(info);
}
/**
* e_table_sort_info_sorting_get_nth:
* @info: The ETableSortInfo object
* @n: Item information to fetch.
*
* Returns: the description of the @n-th grouping criteria in the @info object.
*/
ETableSortColumn
e_table_sort_info_sorting_get_nth (ETableSortInfo *info, int n)
{
if (n < info->sort_count) {
return info->sortings[n];
} else {
ETableSortColumn fake = {0, 0};
return fake;
}
}
/**
* e_table_sort_info_sorting_get_nth:
* @info: The ETableSortInfo object
* @n: Item information to fetch.
* @column: new values for the sorting
*
* Sets the sorting criteria for index @n to be given by @column (a
* column number and whether it is ascending or descending).
*/
void
e_table_sort_info_sorting_set_nth (ETableSortInfo *info, int n, ETableSortColumn column)
{
if (n >= info->sort_count) {
e_table_sort_info_sorting_real_truncate(info, n + 1);
}
info->sortings[n] = column;
e_table_sort_info_sort_info_changed(info);
}
/**
* e_table_sort_info_new:
*
* This creates a new e_table_sort_info object that contains no
* grouping and no sorting defined as of yet. This object is used
* to keep track of multi-level sorting and multi-level grouping of
* the ETable.
*
* Returns: A new %ETableSortInfo object
*/
ETableSortInfo *
e_table_sort_info_new (void)
{
return g_object_new (E_TABLE_SORT_INFO_TYPE, NULL);
}
/**
* e_table_sort_info_load_from_node:
* @info: The ETableSortInfo object
* @node: pointer to the xmlNode that describes the sorting and grouping information
* @state_version:
*
* This loads the state for the %ETableSortInfo object @info from the
* xml node @node.
*/
void
e_table_sort_info_load_from_node (ETableSortInfo *info,
xmlNode *node,
gdouble state_version)
{
int i;
xmlNode *grouping;
if (state_version <= 0.05) {
i = 0;
for (grouping = node->xmlChildrenNode; grouping && !strcmp ((char *)grouping->name, "group"); grouping = grouping->xmlChildrenNode) {
ETableSortColumn column;
column.column = e_xml_get_integer_prop_by_name (grouping, (const unsigned char *)"column");
column.ascending = e_xml_get_bool_prop_by_name (grouping, (const unsigned char *)"ascending");
e_table_sort_info_grouping_set_nth(info, i++, column);
}
i = 0;
for (; grouping && !strcmp ((char *)grouping->name, "leaf"); grouping = grouping->xmlChildrenNode) {
ETableSortColumn column;
column.column = e_xml_get_integer_prop_by_name (grouping, (const unsigned char *)"column");
column.ascending = e_xml_get_bool_prop_by_name (grouping, (const unsigned char *)"ascending");
e_table_sort_info_sorting_set_nth(info, i++, column);
}
} else {
gint gcnt = 0;
gint scnt = 0;
for (grouping = node->children; grouping; grouping = grouping->next) {
ETableSortColumn column;
if (grouping->type != XML_ELEMENT_NODE)
continue;
if (!strcmp ((char *)grouping->name, "group")) {
column.column = e_xml_get_integer_prop_by_name (grouping, (const unsigned char *)"column");
column.ascending = e_xml_get_bool_prop_by_name (grouping, (const unsigned char *)"ascending");
e_table_sort_info_grouping_set_nth(info, gcnt++, column);
} else if (!strcmp ((char *)grouping->name, "leaf")) {
column.column = e_xml_get_integer_prop_by_name (grouping, (const unsigned char *)"column");
column.ascending = e_xml_get_bool_prop_by_name (grouping, (const unsigned char *)"ascending");
e_table_sort_info_sorting_set_nth(info, scnt++, column);
}
}
}
g_signal_emit (G_OBJECT (info), e_table_sort_info_signals [SORT_INFO_CHANGED], 0);
}
/**
* e_table_sort_info_save_to_node:
* @info: The ETableSortInfo object
* @parent: xmlNode that will be hosting the saved state of the @info object.
*
* This function is used
*
* Returns: the node that has been appended to @parent as a child containing
* the sorting and grouping information for this ETableSortInfo object.
*/
xmlNode *
e_table_sort_info_save_to_node (ETableSortInfo *info,
xmlNode *parent)
{
xmlNode *grouping;
int i;
const int sort_count = e_table_sort_info_sorting_get_count (info);
const int group_count = e_table_sort_info_grouping_get_count (info);
grouping = xmlNewChild (parent, NULL, (const unsigned char *)"grouping", NULL);
for (i = 0; i < group_count; i++) {
ETableSortColumn column = e_table_sort_info_grouping_get_nth(info, i);
xmlNode *new_node = xmlNewChild(grouping, NULL, (const unsigned char *)"group", NULL);
e_xml_set_integer_prop_by_name (new_node, (const unsigned char *)"column", column.column);
e_xml_set_bool_prop_by_name (new_node, (const unsigned char *)"ascending", column.ascending);
}
for (i = 0; i < sort_count; i++) {
ETableSortColumn column = e_table_sort_info_sorting_get_nth(info, i);
xmlNode *new_node = xmlNewChild(grouping, NULL, (const unsigned char *)"leaf", NULL);
e_xml_set_integer_prop_by_name (new_node, (const unsigned char *)"column", column.column);
e_xml_set_bool_prop_by_name (new_node, (const unsigned char *)"ascending", column.ascending);
}
return grouping;
}
ETableSortInfo *
e_table_sort_info_duplicate (ETableSortInfo *info)
{
ETableSortInfo *new_info;
new_info = e_table_sort_info_new();
new_info->group_count = info->group_count;
new_info->groupings = g_new(ETableSortColumn, new_info->group_count);
memmove(new_info->groupings, info->groupings, sizeof (ETableSortColumn) * new_info->group_count);
new_info->sort_count = info->sort_count;
new_info->sortings = g_new(ETableSortColumn, new_info->sort_count);
memmove(new_info->sortings, info->sortings, sizeof (ETableSortColumn) * new_info->sort_count);
new_info->can_group = info->can_group;
return new_info;
}
void
e_table_sort_info_set_can_group (ETableSortInfo *info,
gboolean can_group)
{
info->can_group = can_group;
}
gboolean
e_table_sort_info_get_can_group (ETableSortInfo *info)
{
return info->can_group;
}
