/*
 * Copyright (C) 2012 - Juan Ferrer Toribio
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "vn-model.h"

static void vn_model_buildable_init (GtkBuildableIface * iface);

G_DEFINE_TYPE_WITH_CODE (VnModel, vn_model, DB_TYPE_MODEL,
	G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
		vn_model_buildable_init)
);

/* GtkBuildable custom tag implementation
 *
 * <links>
 *   <link field="db.table.field" param="param-id"/>
 *   ...
 * </links>
 */

typedef struct
{
	GtkBuilder * builder;
	DbModel * model;
	GSList * fields;
	GSList * params;
}
VnModelData;

//+++++++++++++++++++++++++++++++++++++++++++++++++++ GtkBuildable

static void vn_model_start_element (GMarkupParseContext * context,
	const gchar * element, const gchar ** names,
	const gchar ** values, gpointer data, GError ** err)
{
	guint i;
	VnModelData * d = data;

	for (i = 0; names[i]; i++)
	if (!g_strcmp0 (names[i], "field"))
		d->fields = g_slist_prepend (d->fields, g_strdup (values[i]));
	else if (!g_strcmp0 (names[i], "param"))
		d->params = g_slist_prepend (d->params, g_strdup (values[i]));
}

static void vn_model_end_element (GMarkupParseContext * context,
	const gchar * element, gpointer data, GError ** error)
{
	GSList * f, * p;
	VnModelData * d = data;

	g_return_if_fail (d->builder);

	if (g_strcmp0 (element, "links"))
		return;

	d->fields = g_slist_reverse (d->fields);
	d->params = g_slist_reverse (d->params);

	for (f = d->fields, p = d->params; f && p; f = f->next, p = p->next)
	{
		gchar * field = f->data;
		GvnParam * param = GVN_PARAM (gtk_builder_get_object (d->builder, p->data));

		db_model_set_default_value_from_param (d->model, field, param);

		g_free (f->data);
		g_free (p->data);
	}

	g_slist_free (d->fields);
	g_slist_free (d->params);
	g_slice_free (VnModelData, d);
}

static const GMarkupParser vn_model_parser =
{
	 vn_model_start_element
	,vn_model_end_element
};
//FIXME: se pone la propiedad "sql" dos veces en el modelo (entre custom_tag_end y custom_finished)
static gboolean vn_model_buildable_custom_tag_start (GtkBuildable * buildable,
	GtkBuilder * builder, GObject * child, const gchar * tag,
	GMarkupParser * parser, gpointer * data)
{
	if (child)
		return FALSE;

	if (!g_strcmp0 (tag, "links"))
	{
		VnModelData * data_ptr = g_slice_new (VnModelData);
		data_ptr->builder = builder;
		data_ptr->model = DB_MODEL (buildable);
		data_ptr->fields = NULL;
		data_ptr->params = NULL;
		*data = data_ptr;
		*parser = vn_model_parser;

		return TRUE;
	}
	else
		g_warning ("Unknown custom model tag: %s", tag);

	return FALSE;
}
/*XXX TEST
static void vn_model_buildable_set_buildable_property (GtkBuildable  *buildable,
	GtkBuilder * builder, const gchar * name, const GValue * value)
{
	g_message ("set buildable property");
}*/
//+++++++++++++++++++++++++++++++++++++++++++++++++++ Class

static void vn_model_finalize (VnModel * obj)
{
	G_OBJECT_CLASS (vn_model_parent_class)->finalize (G_OBJECT (obj));
}

static void vn_model_class_init (VnModelClass * klass)
{
	GObjectClass * k = G_OBJECT_CLASS (klass);
	k->finalize = (GObjectFinalizeFunc) vn_model_finalize;
}

static void vn_model_buildable_init (GtkBuildableIface * iface)
{
	iface->custom_tag_start = vn_model_buildable_custom_tag_start;
//	iface->set_buildable_property = vn_model_buildable_set_buildable_property;
}

static void vn_model_init (VnModel * obj)
{}