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/*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Chris Lahey <clahey@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "e-table-memory-callbacks.h"
G_DEFINE_TYPE (ETableMemoryCallbacks, e_table_memory_callbacks, E_TYPE_TABLE_MEMORY)
static gint
etmc_column_count (ETableModel *etm)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->col_count)
return etmc->col_count (etm, etmc->data);
else
return 0;
}
static gpointer
etmc_value_at (ETableModel *etm,
gint col,
gint row)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->value_at)
return etmc->value_at (etm, col, row, etmc->data);
else
return NULL;
}
static void
etmc_set_value_at (ETableModel *etm,
gint col,
gint row,
gconstpointer val)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->set_value_at)
etmc->set_value_at (etm, col, row, val, etmc->data);
}
static gboolean
etmc_is_cell_editable (ETableModel *etm,
gint col,
gint row)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->is_cell_editable)
return etmc->is_cell_editable (etm, col, row, etmc->data);
else
return FALSE;
}
/* The default for etmc_duplicate_value is to return the raw value. */
static gpointer
etmc_duplicate_value (ETableModel *etm,
gint col,
gconstpointer value)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->duplicate_value)
return etmc->duplicate_value (etm, col, value, etmc->data);
else
return (gpointer) value;
}
static void
etmc_free_value (ETableModel *etm,
gint col,
gpointer value)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->free_value)
etmc->free_value (etm, col, value, etmc->data);
}
static gpointer
etmc_initialize_value (ETableModel *etm,
gint col)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->initialize_value)
return etmc->initialize_value (etm, col, etmc->data);
else
return NULL;
}
static gboolean
etmc_value_is_empty (ETableModel *etm,
gint col,
gconstpointer value)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->value_is_empty)
return etmc->value_is_empty (etm, col, value, etmc->data);
else
return FALSE;
}
static gchar *
etmc_value_to_string (ETableModel *etm,
gint col,
gconstpointer value)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->value_to_string)
return etmc->value_to_string (etm, col, value, etmc->data);
else
return g_strdup ("");
}
static void
etmc_append_row (ETableModel *etm,
ETableModel *source,
gint row)
{
ETableMemoryCallbacks *etmc = E_TABLE_MEMORY_CALLBACKS (etm);
if (etmc->append_row)
etmc->append_row (etm, source, row, etmc->data);
}
static void
e_table_memory_callbacks_class_init (ETableMemoryCallbacksClass *class)
{
ETableModelClass *model_class = E_TABLE_MODEL_CLASS (class);
model_class->column_count = etmc_column_count;
model_class->value_at = etmc_value_at;
model_class->set_value_at = etmc_set_value_at;
model_class->is_cell_editable = etmc_is_cell_editable;
model_class->duplicate_value = etmc_duplicate_value;
model_class->free_value = etmc_free_value;
model_class->initialize_value = etmc_initialize_value;
model_class->value_is_empty = etmc_value_is_empty;
model_class->value_to_string = etmc_value_to_string;
model_class->append_row = etmc_append_row;
}
static void
e_table_memory_callbacks_init (ETableMemoryCallbacks *etmc)
{
/* nothing to do */
}
/**
* e_table_memory_callbacks_new:
* @col_count:
* @value_at:
* @set_value_at:
* @is_cell_editable:
* @duplicate_value:
* @free_value:
* @initialize_value:
* @value_is_empty:
* @value_to_string:
* @data: closure pointer.
*
* This initializes a new ETableMemoryCallbacksModel object.
* ETableMemoryCallbacksModel is an implementaiton of the abstract class
* ETableModel. The ETableMemoryCallbacksModel is designed to allow people
* to easily create ETableModels without having to create a new GType
* derived from ETableModel every time they need one.
*
* Instead, ETableMemoryCallbacksModel uses a setup based in callback
* functions, every callback function signature mimics the signature of
* each ETableModel method and passes the extra @data pointer to each one
* of the method to provide them with any context they might want to use.
*
* Returns: An ETableMemoryCallbacksModel object (which is also an ETableModel
* object).
*/
ETableModel *
e_table_memory_callbacks_new (ETableMemoryCallbacksColumnCountFn col_count,
ETableMemoryCallbacksValueAtFn value_at,
ETableMemoryCallbacksSetValueAtFn set_value_at,
ETableMemoryCallbacksIsCellEditableFn is_cell_editable,
ETableMemoryCallbacksDuplicateValueFn duplicate_value,
ETableMemoryCallbacksFreeValueFn free_value,
ETableMemoryCallbacksInitializeValueFn initialize_value,
ETableMemoryCallbacksValueIsEmptyFn value_is_empty,
ETableMemoryCallbacksValueToStringFn value_to_string,
gpointer data)
{
ETableMemoryCallbacks *et;
et = g_object_new (E_TYPE_TABLE_MEMORY_CALLBACKS, NULL);
et->col_count = col_count;
et->value_at = value_at;
et->set_value_at = set_value_at;
et->is_cell_editable = is_cell_editable;
et->duplicate_value = duplicate_value;
et->free_value = free_value;
et->initialize_value = initialize_value;
et->value_is_empty = value_is_empty;
et->value_to_string = value_to_string;
et->data = data;
return (ETableModel *) et;
}
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