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/*
* glade-template.c:
*
* Copyright (C) 2017-2018 Juan Pablo Ugarte.
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Authors:
* Juan Pablo Ugarte <juanpablougarte@gmail.com>
*/
#include "glade-private.h"
#include "glade-utils.h"
#if HAVE_GTK_TEMPLATE_UNSET
extern void
_gtk_widget_class_template_unset_only_for_glade (GtkWidgetClass *widget_class);
#else
#define _gtk_widget_class_template_unset_only_for_glade(void)
#endif
static GHashTable *templates = NULL;
static void
glade_template_instance_init (GTypeInstance *instance, gpointer g_class)
{
/* Reset class template */
_gtk_widget_class_template_unset_only_for_glade (GTK_WIDGET_GET_CLASS (instance));
gtk_widget_class_set_template (GTK_WIDGET_GET_CLASS (instance),
g_hash_table_lookup (templates,
G_OBJECT_TYPE_NAME (instance)));
/* Regular template initialization*/
gtk_widget_init_template ((GtkWidget *)instance);
}
typedef struct {
gchar *class;
gchar *parent;
} ParserData;
static void
start_element (GMarkupParseContext *context,
const gchar *element_name,
const gchar **attribute_names,
const gchar **attribute_values,
gpointer user_data,
GError **error)
{
ParserData *data = user_data;
gint i;
if (!g_str_equal (element_name, "template"))
return;
for (i = 0; attribute_names[i]; i++)
if (g_str_equal (attribute_names[i], "class"))
data->class = g_strdup (attribute_values[i]);
else if (g_str_equal (attribute_names[i], "parent"))
data->parent = g_strdup (attribute_values[i]);
}
GType
_glade_template_generate_type_from_file (GladeCatalog *catalog,
const gchar *name,
const gchar *filename)
{
GMarkupParser parser = { start_element, NULL, };
GMarkupParseContext *context;
ParserData data = { 0, };
GType parent_type;
GTypeQuery query;
GTypeInfo *info;
gchar *template = NULL;
gsize len = 0;
GError *error = NULL;
g_return_val_if_fail (name != NULL, 0);
g_return_val_if_fail (filename != NULL, 0);
if (g_path_is_absolute (filename))
g_file_get_contents (filename, &template, &len, &error);
else
{
gchar *fullpath = g_build_filename (glade_catalog_get_prefix (catalog),
filename, NULL);
g_file_get_contents (fullpath, &template, &len, &error);
g_free (fullpath);
}
if (error)
{
g_warning ("Error loading template file %s for %s class - %s", filename, name, error->message);
return G_TYPE_INVALID;
}
context = g_markup_parse_context_new (&parser, 0, &data, NULL);
g_markup_parse_context_parse (context, template, -1, NULL);
g_markup_parse_context_end_parse (context, NULL);
if (!g_str_equal (name, data.class))
{
g_warning ("Template %s is for class %s, not %s", filename, data.class, name);
return G_TYPE_INVALID;
}
parent_type = glade_util_get_type_from_name (data.parent, FALSE);
g_return_val_if_fail (parent_type != 0, 0);
g_type_query (parent_type, &query);
g_return_val_if_fail (query.type != 0, 0);
if (g_once_init_enter (&templates))
{
GHashTable *table = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_bytes_unref);
g_once_init_leave (&templates, table);
}
/* Add template to global hash table */
g_hash_table_insert (templates, g_strdup (name), g_bytes_new_take (template, len));
info = g_new0 (GTypeInfo, 1);
info->class_size = query.class_size;
info->instance_size = query.instance_size;
info->instance_init = glade_template_instance_init;
g_free (data.class);
g_free (data.parent);
return g_type_register_static (parent_type, name, info, 0);
}
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