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/*
* Copyright © 2011 Red Hat Inc.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkcssshorthandpropertyprivate.h"
#include "gtkcssarrayvalueprivate.h"
#include "gtkcssinheritvalueprivate.h"
#include "gtkcssinitialvalueprivate.h"
#include "gtkcssunsetvalueprivate.h"
enum {
PROP_0,
PROP_SUBPROPERTIES,
};
G_DEFINE_TYPE (GtkCssShorthandProperty, _gtk_css_shorthand_property, GTK_TYPE_STYLE_PROPERTY)
static void
gtk_css_shorthand_property_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCssShorthandProperty *property = GTK_CSS_SHORTHAND_PROPERTY (object);
const char **subproperties;
guint i;
switch (prop_id)
{
case PROP_SUBPROPERTIES:
subproperties = g_value_get_boxed (value);
g_assert (subproperties);
for (i = 0; subproperties[i] != NULL; i++)
{
GtkStyleProperty *subproperty = _gtk_style_property_lookup (subproperties[i]);
g_assert (GTK_IS_CSS_STYLE_PROPERTY (subproperty));
g_ptr_array_add (property->subproperties, subproperty);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GtkCssValue *
gtk_css_shorthand_property_parse_value (GtkStyleProperty *property,
GtkCssParser *parser)
{
GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
const guint n_props = shorthand->subproperties->len;
GtkCssValue **data;
GtkCssValue *result;
guint i;
data = g_newa (GtkCssValue *, n_props);
memset (data, 0, sizeof (GtkCssValue *) * n_props);
if (gtk_css_parser_try_ident (parser, "initial"))
{
/* the initial value can be explicitly specified with the
* ‘initial’ keyword which all properties accept.
*/
return _gtk_css_initial_value_new ();
}
else if (gtk_css_parser_try_ident (parser, "inherit"))
{
/* All properties accept the ‘inherit’ value which
* explicitly specifies that the value will be determined
* by inheritance. The ‘inherit’ value can be used to
* strengthen inherited values in the cascade, and it can
* also be used on properties that are not normally inherited.
*/
return _gtk_css_inherit_value_new ();
}
else if (gtk_css_parser_try_ident (parser, "unset"))
{
/* If the cascaded value of a property is the unset keyword,
* then if it is an inherited property, this is treated as
* inherit, and if it is not, this is treated as initial.
*/
return _gtk_css_unset_value_new ();
}
else if (!shorthand->parse (shorthand, data, parser))
{
for (i = 0; i < n_props; i++)
{
if (data[i] != NULL)
_gtk_css_value_unref (data[i]);
}
return NULL;
}
/* All values that aren't set by the parse func are set to their
* default values here.
* XXX: Is the default always initial or can it be inherit? */
for (i = 0; i < n_props; i++)
{
if (data[i] == NULL)
data[i] = _gtk_css_initial_value_new ();
}
result = _gtk_css_array_value_new_from_array (data, n_props);
return result;
}
static void
_gtk_css_shorthand_property_class_init (GtkCssShorthandPropertyClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkStylePropertyClass *property_class = GTK_STYLE_PROPERTY_CLASS (klass);
object_class->set_property = gtk_css_shorthand_property_set_property;
g_object_class_install_property (object_class,
PROP_SUBPROPERTIES,
g_param_spec_boxed ("subproperties", NULL, NULL,
G_TYPE_STRV,
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
property_class->parse_value = gtk_css_shorthand_property_parse_value;
}
static void
_gtk_css_shorthand_property_init (GtkCssShorthandProperty *shorthand)
{
shorthand->subproperties = g_ptr_array_new_with_free_func (g_object_unref);
}
GtkCssStyleProperty *
_gtk_css_shorthand_property_get_subproperty (GtkCssShorthandProperty *shorthand,
guint property)
{
g_return_val_if_fail (GTK_IS_CSS_SHORTHAND_PROPERTY (shorthand), NULL);
g_return_val_if_fail (property < shorthand->subproperties->len, NULL);
return g_ptr_array_index (shorthand->subproperties, property);
}
guint
_gtk_css_shorthand_property_get_n_subproperties (GtkCssShorthandProperty *shorthand)
{
g_return_val_if_fail (GTK_IS_CSS_SHORTHAND_PROPERTY (shorthand), 0);
return shorthand->subproperties->len;
}
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