/*

 * Copyright (C) 2013 Collabora Ltd.

 *

 * Authors: Marco Barisione <marco.barisione@collabora.co.uk>

 *          Guillaume Desmottes <guillaume.desmottes@collabora.co.uk>

 *          Xavier Claessens <xavier.claessens@collabora.co.uk>

 *          Mikael Hallendal <micke@imendio.com>

 *          Richard Hult <richard@imendio.com>

 *          Martyn Russell <martyn@imendio.com>

 *

 * 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, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include "config.h"

#include "tpaw-builder.h"

#define DEBUG_FLAG TPAW_DEBUG_OTHER

#include "tpaw-debug.h"

enum _BuilderSource

{

  BUILDER_SOURCE_FILE,

  BUILDER_SOURCE_RESOURCE

};

static GtkBuilder *

builder_get_valist (const gchar *sourcename,

    enum _BuilderSource source,

    const gchar *translation_domain,

    const gchar *first_object,

    va_list args)

{

  GtkBuilder *gui;

  const gchar *name;

  GObject **object_ptr;

  GError *error = NULL;

  gboolean success;

  DEBUG ("Loading %s '%s'", source == BUILDER_SOURCE_FILE ? "file" : "resource", sourcename);

  gui = gtk_builder_new ();

  gtk_builder_set_translation_domain (gui, translation_domain);

  switch (source)

    {

    case BUILDER_SOURCE_FILE:

      success = gtk_builder_add_from_file (gui, sourcename, &error);

      break;

    case BUILDER_SOURCE_RESOURCE:

      success = gtk_builder_add_from_resource (gui, sourcename, &error);

      break;

    default:

      g_assert_not_reached ();

    }

  if (!success)

    {

      g_critical ("GtkBuilder Error (%s): %s",

          sourcename, error->message);

      g_clear_error (&error);

      g_object_unref (gui);

      /* we need to iterate and set all of the pointers to NULL */

      for (name = first_object; name; name = va_arg (args, const gchar *))

        {

          object_ptr = va_arg (args, GObject**);

          *object_ptr = NULL;

        }

      return NULL;

    }

  for (name = first_object; name; name = va_arg (args, const gchar *))

    {

      object_ptr = va_arg (args, GObject**);

      *object_ptr = gtk_builder_get_object (gui, name);

      if (!*object_ptr)

        {

          g_warning ("File is missing object '%s'.", name);

          continue;

        }

    }

  return gui;

}

GtkBuilder *

tpaw_builder_get_file_with_domain (const gchar *filename,

    const gchar *translation_domain,

    const gchar *first_object,

    ...)

{

  GtkBuilder *gui;

  va_list args;

  va_start (args, first_object);

  gui = builder_get_valist (filename, BUILDER_SOURCE_FILE,

      translation_domain, first_object, args);

  va_end (args);

  return gui;

}

GtkBuilder *

tpaw_builder_get_resource_with_domain (const gchar *resourcename,

    const gchar *translation_domain,

    const gchar *first_object,

    ...)

{

  GtkBuilder *gui;

  va_list args;

  va_start (args, first_object);

  gui = builder_get_valist (resourcename, BUILDER_SOURCE_RESOURCE,

      translation_domain, first_object, args);

  va_end (args);

  return gui;

}

void

tpaw_builder_connect (GtkBuilder *gui,

    gpointer user_data,

    const gchar *first_object,

    ...)

{

  va_list args;

  const gchar *name;

  const gchar *sig;

  GObject *object;

  GCallback callback;

  va_start (args, first_object);

  for (name = first_object; name; name = va_arg (args, const gchar *))

    {

      sig = va_arg (args, const gchar *);

      callback = va_arg (args, GCallback);

      object = gtk_builder_get_object (gui, name);

      if (!object)

        {

          g_warning ("File is missing object '%s'.", name);

          continue;

        }

      g_signal_connect (object, sig, callback, user_data);

    }

  va_end (args);

}

GtkWidget *

tpaw_builder_unref_and_keep_widget (GtkBuilder *gui,

    GtkWidget *widget)

{

  /* On construction gui sinks the initial reference to widget. When gui

   * is finalized it will drop its ref to widget. We take our own ref to

   * prevent widget being finalised. The widget is forced to have a

   * floating reference, like when it was initially unowned so that it can

   * be used like any other GtkWidget. */

  g_object_ref (widget);

  g_object_force_floating (G_OBJECT (widget));

  g_object_unref (gui);

  return widget;

}