1 files changed, 139 insertions, 0 deletions
diff --git a/app/core/gimpitemundo.c b/app/core/gimpitemundo.c
new file mode 100644
index 0000000..0a50d43
--- /dev/null
+++ b/app/core/gimpitemundo.c
@@ -0,0 +1,139 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * 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/>.
+ */
+
+#include "config.h"
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "core-types.h"
+
+#include "gimpimage.h"
+#include "gimpitem.h"
+#include "gimpitemundo.h"
+
+
+enum
+{
+  PROP_0,
+  PROP_ITEM
+};
+
+
+static void   gimp_item_undo_constructed  (GObject      *object);
+static void   gimp_item_undo_set_property (GObject      *object,
+                                           guint         property_id,
+                                           const GValue *value,
+                                           GParamSpec   *pspec);
+static void   gimp_item_undo_get_property (GObject      *object,
+                                           guint         property_id,
+                                           GValue       *value,
+                                           GParamSpec   *pspec);
+
+static void   gimp_item_undo_free         (GimpUndo     *undo,
+                                           GimpUndoMode  undo_mode);
+
+
+G_DEFINE_TYPE (GimpItemUndo, gimp_item_undo, GIMP_TYPE_UNDO)
+
+#define parent_class gimp_item_undo_parent_class
+
+
+static void
+gimp_item_undo_class_init (GimpItemUndoClass *klass)
+{
+  GObjectClass  *object_class = G_OBJECT_CLASS (klass);
+  GimpUndoClass *undo_class   = GIMP_UNDO_CLASS (klass);
+
+  object_class->constructed  = gimp_item_undo_constructed;
+  object_class->set_property = gimp_item_undo_set_property;
+  object_class->get_property = gimp_item_undo_get_property;
+
+  undo_class->free           = gimp_item_undo_free;
+
+  g_object_class_install_property (object_class, PROP_ITEM,
+                                   g_param_spec_object ("item", NULL, NULL,
+                                                        GIMP_TYPE_ITEM,
+                                                        GIMP_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT_ONLY));
+}
+
+static void
+gimp_item_undo_init (GimpItemUndo *undo)
+{
+}
+
+static void
+gimp_item_undo_constructed (GObject *object)
+{
+  GimpItemUndo *item_undo = GIMP_ITEM_UNDO (object);
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+
+  gimp_assert (GIMP_IS_ITEM (item_undo->item));
+}
+
+static void
+gimp_item_undo_set_property (GObject      *object,
+                             guint         property_id,
+                             const GValue *value,
+                             GParamSpec   *pspec)
+{
+  GimpItemUndo *item_undo = GIMP_ITEM_UNDO (object);
+
+  switch (property_id)
+    {
+    case PROP_ITEM:
+      item_undo->item = g_value_dup_object (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_item_undo_get_property (GObject    *object,
+                             guint       property_id,
+                             GValue     *value,
+                             GParamSpec *pspec)
+{
+  GimpItemUndo *item_undo = GIMP_ITEM_UNDO (object);
+
+  switch (property_id)
+    {
+    case PROP_ITEM:
+      g_value_set_object (value, item_undo->item);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_item_undo_free (GimpUndo     *undo,
+                     GimpUndoMode  undo_mode)
+{
+  GimpItemUndo *item_undo = GIMP_ITEM_UNDO (undo);
+
+  g_clear_object (&item_undo->item);
+
+  GIMP_UNDO_CLASS (parent_class)->free (undo, undo_mode);
+}