[gtk+] GtkImageAccessible: add a private struct

[Matthias Clasen <matthiasc src gnome org>]

commit 0bbfcc249191026a1ee822545398ec6e5e36f7f4
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Oct 14 19:38:08 2012 -0400

    GtkImageAccessible: add a private struct
    
    Move instance fields to a private struct, in preparation
    for installing a11y headers.

 gtk/a11y/gtkimageaccessible.c |   26 +++++++++++++++++---------
 gtk/a11y/gtkimageaccessible.h |    8 ++++----
 2 files changed, 21 insertions(+), 13 deletions(-)
---
diff --git a/gtk/a11y/gtkimageaccessible.c b/gtk/a11y/gtkimageaccessible.c
index 84c9607..14dffa3 100644
--- a/gtk/a11y/gtkimageaccessible.c
+++ b/gtk/a11y/gtkimageaccessible.c
@@ -21,6 +21,11 @@
 #include <gtk/gtk.h>
 #include "gtkimageaccessible.h"
 
+struct _GtkImageAccessiblePrivate
+{
+  gchar *image_description;
+  gchar *stock_name;
+};
 
 static void atk_image_interface_init (AtkImageIface  *iface);
 
@@ -41,8 +46,8 @@ gtk_image_accessible_finalize (GObject *object)
 {
   GtkImageAccessible *aimage = GTK_IMAGE_ACCESSIBLE (object);
 
-  g_free (aimage->image_description);
-  g_free (aimage->stock_name);
+  g_free (aimage->priv->image_description);
+  g_free (aimage->priv->stock_name);
 
   G_OBJECT_CLASS (_gtk_image_accessible_parent_class)->finalize (object);
 }
@@ -68,8 +73,8 @@ gtk_image_accessible_get_name (AtkObject *accessible)
   image = GTK_IMAGE (widget);
   image_accessible = GTK_IMAGE_ACCESSIBLE (accessible);
 
-  g_free (image_accessible->stock_name);
-  image_accessible->stock_name = NULL;
+  g_free (image_accessible->priv->stock_name);
+  image_accessible->priv->stock_name = NULL;
 
   if (gtk_image_get_storage_type (image) != GTK_IMAGE_STOCK)
     return NULL;
@@ -81,8 +86,8 @@ gtk_image_accessible_get_name (AtkObject *accessible)
   if (!gtk_stock_lookup (stock_id, &stock_item))
     return NULL;
 
-  image_accessible->stock_name = _gtk_toolbar_elide_underscores (stock_item.label);
-  return image_accessible->stock_name;
+  image_accessible->priv->stock_name = _gtk_toolbar_elide_underscores (stock_item.label);
+  return image_accessible->priv->stock_name;
 }
 
 static void
@@ -99,6 +104,9 @@ _gtk_image_accessible_class_init (GtkImageAccessibleClass *klass)
 static void
 _gtk_image_accessible_init (GtkImageAccessible *image)
 {
+  image->priv = G_TYPE_INSTANCE_GET_PRIVATE (image,
+                                             GTK_TYPE_IMAGE_ACCESSIBLE,
+                                             GtkImageAccessiblePrivate);
 }
 
 static const gchar *
@@ -106,7 +114,7 @@ gtk_image_accessible_get_image_description (AtkImage *image)
 {
   GtkImageAccessible *accessible = GTK_IMAGE_ACCESSIBLE (image);
 
-  return accessible->image_description;
+  return accessible->priv->image_description;
 }
 
 static void
@@ -187,8 +195,8 @@ gtk_image_accessible_set_image_description (AtkImage    *image,
 {
   GtkImageAccessible* accessible = GTK_IMAGE_ACCESSIBLE (image);
 
-  g_free (accessible->image_description);
-  accessible->image_description = g_strdup (description);
+  g_free (accessible->priv->image_description);
+  accessible->priv->image_description = g_strdup (description);
 
   return TRUE;
 }
diff --git a/gtk/a11y/gtkimageaccessible.h b/gtk/a11y/gtkimageaccessible.h
index 1fad120..7e481d7 100644
--- a/gtk/a11y/gtkimageaccessible.h
+++ b/gtk/a11y/gtkimageaccessible.h
@@ -29,15 +29,15 @@ G_BEGIN_DECLS
 #define GTK_IS_IMAGE_ACCESSIBLE_CLASS(klass)           (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_IMAGE_ACCESSIBLE))
 #define GTK_IMAGE_ACCESSIBLE_GET_CLASS(obj)            (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_IMAGE_ACCESSIBLE, GtkImageAccessibleClass))
 
-typedef struct _GtkImageAccessible      GtkImageAccessible;
-typedef struct _GtkImageAccessibleClass GtkImageAccessibleClass;
+typedef struct _GtkImageAccessible        GtkImageAccessible;
+typedef struct _GtkImageAccessibleClass   GtkImageAccessibleClass;
+typedef struct _GtkImageAccessiblePrivate GtkImageAccessiblePrivate;
 
 struct _GtkImageAccessible
 {
   GtkWidgetAccessible parent;
 
-  gchar*     image_description;
-  gchar*     stock_name;
+  GtkImageAccessiblePrivate *priv;
 };
 
 struct _GtkImageAccessibleClass