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gimp/app/widgets/gimppdbdialog.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimppdbdialog.c
* Copyright (C) 2004 Michael Natterer <mitch@gimp.org>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "pdb/gimppdb.h"
#include "gimpmenufactory.h"
#include "gimppdbdialog.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_PDB,
PROP_CONTEXT,
PROP_SELECT_TYPE,
PROP_INITIAL_OBJECT,
PROP_CALLBACK_NAME,
PROP_MENU_FACTORY
};
static void gimp_pdb_dialog_class_init (GimpPdbDialogClass *klass);
static void gimp_pdb_dialog_init (GimpPdbDialog *dialog,
GimpPdbDialogClass *klass);
static GObject * gimp_pdb_dialog_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_pdb_dialog_dispose (GObject *object);
static void gimp_pdb_dialog_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_pdb_dialog_destroy (GtkObject *object);
static void gimp_pdb_dialog_response (GtkDialog *dialog,
gint response_id);
static void gimp_pdb_dialog_context_changed (GimpContext *context,
GimpObject *object,
GimpPdbDialog *dialog);
static void gimp_pdb_dialog_plug_in_closed (GimpPlugInManager *manager,
GimpPlugIn *plug_in,
GimpPdbDialog *dialog);
static GimpDialogClass *parent_class = NULL;
GType
gimp_pdb_dialog_get_type (void)
{
static GType dialog_type = 0;
if (! dialog_type)
{
const GTypeInfo dialog_info =
{
sizeof (GimpPdbDialogClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_pdb_dialog_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpPdbDialog),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_pdb_dialog_init,
};
dialog_type = g_type_register_static (GIMP_TYPE_DIALOG,
"GimpPdbDialog",
&dialog_info,
G_TYPE_FLAG_ABSTRACT);
}
return dialog_type;
}
static void
gimp_pdb_dialog_class_init (GimpPdbDialogClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (klass);
GtkDialogClass *dialog_class = GTK_DIALOG_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->constructor = gimp_pdb_dialog_constructor;
object_class->dispose = gimp_pdb_dialog_dispose;
object_class->set_property = gimp_pdb_dialog_set_property;
object_class->set_property = gimp_pdb_dialog_set_property;
gtk_object_class->destroy = gimp_pdb_dialog_destroy;
dialog_class->response = gimp_pdb_dialog_response;
klass->run_callback = NULL;
g_object_class_install_property (object_class, PROP_CONTEXT,
g_param_spec_object ("context", NULL, NULL,
GIMP_TYPE_CONTEXT,
GIMP_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_PDB,
g_param_spec_object ("pdb", NULL, NULL,
GIMP_TYPE_PDB,
GIMP_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_SELECT_TYPE,
g_param_spec_gtype ("select-type",
NULL, NULL,
GIMP_TYPE_OBJECT,
GIMP_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_INITIAL_OBJECT,
g_param_spec_object ("initial-object",
NULL, NULL,
GIMP_TYPE_OBJECT,
GIMP_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_CALLBACK_NAME,
g_param_spec_string ("callback-name",
NULL, NULL,
NULL,
GIMP_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_MENU_FACTORY,
g_param_spec_object ("menu-factory",
NULL, NULL,
GIMP_TYPE_MENU_FACTORY,
GIMP_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_pdb_dialog_init (GimpPdbDialog *dialog,
GimpPdbDialogClass *klass)
{
klass->dialogs = g_list_prepend (klass->dialogs, dialog);
gtk_dialog_add_button (GTK_DIALOG (dialog),
GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE);
}
static GObject *
gimp_pdb_dialog_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpPdbDialog *dialog;
const gchar *signal_name;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
dialog = GIMP_PDB_DIALOG (object);
g_assert (GIMP_IS_PDB (dialog->pdb));
g_assert (GIMP_IS_CONTEXT (dialog->caller_context));
g_assert (g_type_is_a (dialog->select_type, GIMP_TYPE_OBJECT));
dialog->context = gimp_context_new (dialog->caller_context->gimp,
g_type_name (type),
NULL);
gimp_context_set_by_type (dialog->context, dialog->select_type,
dialog->initial_object);
dialog->initial_object = NULL;
signal_name = gimp_context_type_to_signal_name (dialog->select_type);
g_signal_connect_object (dialog->context, signal_name,
G_CALLBACK (gimp_pdb_dialog_context_changed),
dialog, 0);
g_signal_connect_object (dialog->context->gimp->plug_in_manager,
"plug-in-closed",
G_CALLBACK (gimp_pdb_dialog_plug_in_closed),
dialog, 0);
return object;
}
static void
gimp_pdb_dialog_dispose (GObject *object)
{
GimpPdbDialogClass *klass = GIMP_PDB_DIALOG_GET_CLASS (object);
klass->dialogs = g_list_remove (klass->dialogs, object);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_pdb_dialog_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpPdbDialog *dialog = GIMP_PDB_DIALOG (object);
switch (property_id)
{
case PROP_PDB:
dialog->pdb = g_value_dup_object (value);
break;
case PROP_CONTEXT:
dialog->caller_context = g_value_dup_object (value);
break;
case PROP_SELECT_TYPE:
dialog->select_type = g_value_get_gtype (value);
break;
case PROP_INITIAL_OBJECT:
/* don't ref, see constructor */
dialog->initial_object = g_value_get_object (value);
break;
case PROP_CALLBACK_NAME:
if (dialog->callback_name)
g_free (dialog->callback_name);
dialog->callback_name = g_value_dup_string (value);
break;
case PROP_MENU_FACTORY:
dialog->menu_factory = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_pdb_dialog_destroy (GtkObject *object)
{
GimpPdbDialog *dialog = GIMP_PDB_DIALOG (object);
if (dialog->pdb)
{
g_object_unref (dialog->pdb);
dialog->pdb = NULL;
}
if (dialog->caller_context)
{
g_object_unref (dialog->caller_context);
dialog->caller_context = NULL;
}
if (dialog->context)
{
g_object_unref (dialog->context);
dialog->context = NULL;
}
if (dialog->callback_name)
{
g_free (dialog->callback_name);
dialog->callback_name = NULL;
}
if (dialog->menu_factory)
{
g_object_unref (dialog->menu_factory);
dialog->menu_factory = NULL;
}
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gimp_pdb_dialog_response (GtkDialog *gtk_dialog,
gint response_id)
{
GimpPdbDialog *dialog = GIMP_PDB_DIALOG (gtk_dialog);
gimp_pdb_dialog_run_callback (dialog, TRUE);
gtk_widget_destroy (GTK_WIDGET (dialog));
}
void
gimp_pdb_dialog_run_callback (GimpPdbDialog *dialog,
gboolean closing)
{
GimpPdbDialogClass *klass = GIMP_PDB_DIALOG_GET_CLASS (dialog);
GimpObject *object;
object = gimp_context_get_by_type (dialog->context, dialog->select_type);
if (object &&
klass->run_callback &&
dialog->callback_name &&
! dialog->callback_busy)
{
dialog->callback_busy = TRUE;
if (gimp_pdb_lookup_procedure (dialog->pdb, dialog->callback_name))
{
GValueArray *return_vals;
GError *error = NULL;
return_vals = klass->run_callback (dialog, object, closing, &error);
if (g_value_get_enum (&return_vals->values[0]) != GIMP_PDB_SUCCESS)
{
gimp_message (dialog->context->gimp, G_OBJECT (dialog),
GIMP_MESSAGE_ERROR,
_("Unable to run %s callback. "
"The corresponding plug-in may have "
"crashed."),
g_type_name (G_TYPE_FROM_INSTANCE (dialog)));
}
else if (error)
{
gimp_message_literal (dialog->context->gimp, G_OBJECT (dialog),
GIMP_MESSAGE_ERROR,
error->message);
g_error_free (error);
}
g_value_array_free (return_vals);
}
dialog->callback_busy = FALSE;
}
}
GimpPdbDialog *
gimp_pdb_dialog_get_by_callback (GimpPdbDialogClass *klass,
const gchar *callback_name)
{
GList *list;
g_return_val_if_fail (GIMP_IS_PDB_DIALOG_CLASS (klass), NULL);
g_return_val_if_fail (callback_name != NULL, NULL);
for (list = klass->dialogs; list; list = g_list_next (list))
{
GimpPdbDialog *dialog = list->data;
if (dialog->callback_name &&
! strcmp (callback_name, dialog->callback_name))
return dialog;
}
return NULL;
}
/* private functions */
static void
gimp_pdb_dialog_context_changed (GimpContext *context,
GimpObject *object,
GimpPdbDialog *dialog)
{
if (object)
gimp_pdb_dialog_run_callback (dialog, FALSE);
}
static void
gimp_pdb_dialog_plug_in_closed (GimpPlugInManager *manager,
GimpPlugIn *plug_in,
GimpPdbDialog *dialog)
{
if (dialog->caller_context && dialog->callback_name)
{
if (! gimp_pdb_lookup_procedure (dialog->pdb, dialog->callback_name))
{
gtk_dialog_response (GTK_DIALOG (dialog), GTK_RESPONSE_CLOSE);
}
}
}
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