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diff --git a/app/core/gimpdataloaderfactory.h b/app/core/gimpdataloaderfactory.h
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+++ b/app/core/gimpdataloaderfactory.h
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpdataloaderfactory.h
+ * Copyright (C) 2001-2018 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 3 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_DATA_LOADER_FACTORY_H__
+#define __GIMP_DATA_LOADER_FACTORY_H__
+
+
+#include "gimpdatafactory.h"
+
+
+typedef GList * (* GimpDataLoadFunc) (GimpContext   *context,
+                                      GFile         *file,
+                                      GInputStream  *input,
+                                      GError       **error);
+
+
+#define GIMP_TYPE_DATA_LOADER_FACTORY            (gimp_data_loader_factory_get_type ())
+#define GIMP_DATA_LOADER_FACTORY(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_DATA_LOADER_FACTORY, GimpDataLoaderFactory))
+#define GIMP_DATA_LOADER_FACTORY_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_DATA_LOADER_FACTORY, GimpDataLoaderFactoryClass))
+#define GIMP_IS_DATA_LOADER_FACTORY(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_DATA_LOADER_FACTORY))
+#define GIMP_IS_DATA_LOADER_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_DATA_LOADER_FACTORY))
+#define GIMP_DATA_LOADER_FACTORY_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_DATA_LOADER_FACTORY, GimpDataLoaderFactoryClass))
+
+
+typedef struct _GimpDataLoaderFactoryPrivate GimpDataLoaderFactoryPrivate;
+typedef struct _GimpDataLoaderFactoryClass   GimpDataLoaderFactoryClass;
+
+struct _GimpDataLoaderFactory
+{
+  GimpDataFactory               parent_instance;
+
+  GimpDataLoaderFactoryPrivate *priv;
+};
+
+struct _GimpDataLoaderFactoryClass
+{
+  GimpDataFactoryClass  parent_class;
+};
+
+
+GType             gimp_data_loader_factory_get_type     (void) G_GNUC_CONST;
+
+GimpDataFactory * gimp_data_loader_factory_new          (Gimp                   *gimp,
+                                                         GType                   data_type,
+                                                         const gchar            *path_property_name,
+                                                         const gchar            *writable_property_name,
+                                                         GimpDataNewFunc         new_func,
+                                                         GimpDataGetStandardFunc  get_standard_func);
+
+void              gimp_data_loader_factory_add_loader   (GimpDataFactory         *factory,
+                                                         const gchar             *name,
+                                                         GimpDataLoadFunc         load_func,
+                                                         const gchar             *extension,
+                                                         gboolean                 writable);
+void              gimp_data_loader_factory_add_fallback (GimpDataFactory         *factory,
+                                                         const gchar             *name,
+                                                         GimpDataLoadFunc         load_func);
+
+
+#endif  /*  __GIMP_DATA_LOADER_FACTORY_H__  */