/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
/* Copyright 2014 Endless Mobile, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#include <config.h>
#include <gtk/gtk.h>

#include "gjs-gtk-util.h"

void
gjs_gtk_container_child_set_property(GtkContainer* container,
                                     GtkWidget* child,
                                     const gchar* property,
                                     const GValue* value)
{
    GParamSpec* pspec;

    pspec
      = gtk_container_class_find_child_property(G_OBJECT_GET_CLASS(container),
                                                property);
    if (pspec == NULL) {
        g_warning("%s does not have a property called %s",
                  g_type_name(G_OBJECT_TYPE(container)), property);
        return;
    }

    if ((G_VALUE_TYPE(value) == G_TYPE_POINTER)
        && (g_value_get_pointer(value) == NULL)
        && !g_value_type_transformable(G_VALUE_TYPE(value),
                                       pspec->value_type)) {
        /* Set an empty value. This will happen when we set a NULL value from
         * JS.
         * Since GJS doesn't know the GParamSpec for this property, it
         * will just put NULL into a G_TYPE_POINTER GValue, which will later
         * fail when trying to transform it to the GParamSpec's GType.
         */
        GValue null_value = G_VALUE_INIT;
        g_value_init(&null_value, pspec->value_type);
        gtk_container_child_set_property(container, child, property,
                                         &null_value);
        g_value_unset(&null_value);
    } else {
        gtk_container_child_set_property(container, child, property, value);
    }
}
