]> Pileus Git - ~andy/gtk/blobdiff - gtk/gtkcontainer.c
Replace a lot of idle and timeout calls by the new gdk_threads api.
[~andy/gtk] / gtk / gtkcontainer.c
index efab0a70230748aecc3da3f3c4f95956dbf3ba78..b7ced4e359d5ef5d8ee482e529b1781d7e43b07c 100644 (file)
  * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
  */
 
+#include <config.h>
 #include <stdarg.h>
 #include <string.h>
 #include <stdlib.h>
 
 #include "gtkcontainer.h"
 #include "gtkprivate.h"
-#include "gtksignal.h"
 #include "gtkmain.h"
 #include "gtkmarshalers.h"
 #include "gtkwindow.h"
 #include "gtkintl.h"
+#include "gtktoolbar.h"
 #include <gobject/gobjectnotifyqueue.c>
 #include <gobject/gvaluecollector.h>
+#include "gtkalias.h"
 
 
 enum {
@@ -51,7 +53,7 @@ enum {
   PROP_0,
   PROP_BORDER_WIDTH,
   PROP_RESIZE_MODE,
-  PROP_CHILD,
+  PROP_CHILD
 };
 
 #define PARAM_SPEC_PARAM_ID(pspec)              ((pspec)->param_id)
@@ -81,9 +83,6 @@ static gboolean gtk_container_focus                (GtkWidget         *widget,
                                                    GtkDirectionType   direction);
 static void     gtk_container_real_set_focus_child (GtkContainer      *container,
                                                    GtkWidget         *widget);
-static GList *  gtk_container_focus_sort           (GtkContainer      *container,
-                                                   GList             *children,
-                                                   GtkDirectionType   direction);
 
 static gboolean gtk_container_focus_move           (GtkContainer      *container,
                                                    GList             *children,
@@ -102,9 +101,9 @@ static gchar* gtk_container_child_default_composite_name (GtkContainer *containe
 
 
 /* --- variables --- */
-static const gchar          *vadjustment_key = "gtk-vadjustment";
+static const gchar           vadjustment_key[] = "gtk-vadjustment";
 static guint                 vadjustment_key_id = 0;
-static const gchar          *hadjustment_key = "gtk-hadjustment";
+static const gchar           hadjustment_key[] = "gtk-hadjustment";
 static guint                 hadjustment_key_id = 0;
 static GSList              *container_resize_queue = NULL;
 static guint                 container_signals[LAST_SIGNAL] = { 0 };
@@ -114,19 +113,20 @@ extern GObjectNotifyContext *_gtk_widget_child_property_notify_context;
 
 
 /* --- functions --- */
-GtkType
+GType
 gtk_container_get_type (void)
 {
-  static GtkType container_type = 0;
+  static GType container_type = 0;
 
   if (!container_type)
     {
-      static GTypeInfo container_info = {
+      const GTypeInfo container_info =
+      {
        sizeof (GtkContainerClass),
        (GBaseInitFunc) gtk_container_base_class_init,
        (GBaseFinalizeFunc) gtk_container_base_class_finalize,
        (GClassInitFunc) gtk_container_class_init,
-       NULL        /* class_destroy */,
+       NULL        /* class_finalize */,
        NULL        /* class_data */,
        sizeof (GtkContainer),
        0           /* n_preallocs */,
@@ -134,7 +134,9 @@ gtk_container_get_type (void)
        NULL,       /* value_table */
       };
 
-      container_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkContainer", &container_info, 0);
+      container_type =
+       g_type_register_static (GTK_TYPE_WIDGET, I_("GtkContainer"), 
+                               &container_info, G_TYPE_FLAG_ABSTRACT);
     }
 
   return container_type;
@@ -199,65 +201,81 @@ gtk_container_class_init (GtkContainerClass *class)
 
   g_object_class_install_property (gobject_class,
                                    PROP_RESIZE_MODE,
-                                   g_param_spec_enum ("resize_mode",
-                                                      _("Resize mode"),
-                                                      _("Specify how resize events are handled"),
+                                   g_param_spec_enum ("resize-mode",
+                                                      P_("Resize mode"),
+                                                      P_("Specify how resize events are handled"),
                                                       GTK_TYPE_RESIZE_MODE,
                                                       GTK_RESIZE_PARENT,
-                                                      G_PARAM_READWRITE));
+                                                      GTK_PARAM_READWRITE));
   g_object_class_install_property (gobject_class,
                                    PROP_BORDER_WIDTH,
-                                   g_param_spec_uint ("border_width",
-                                                      _("Border width"),
-                                                      _("The width of the empty border outside the containers children."),
+                                   g_param_spec_uint ("border-width",
+                                                      P_("Border width"),
+                                                      P_("The width of the empty border outside the containers children"),
                                                      0,
                                                      G_MAXINT,
                                                      0,
-                                                      G_PARAM_READWRITE));
+                                                      GTK_PARAM_READWRITE));
   g_object_class_install_property (gobject_class,
                                    PROP_CHILD,
                                    g_param_spec_object ("child",
-                                                      _("Child"),
-                                                      _("Can be used to add a new child to the container."),
+                                                      P_("Child"),
+                                                      P_("Can be used to add a new child to the container"),
                                                       GTK_TYPE_WIDGET,
-                                                     G_PARAM_WRITABLE));
+                                                     GTK_PARAM_WRITABLE));
   container_signals[ADD] =
-    gtk_signal_new ("add",
-                    GTK_RUN_FIRST,
-                    GTK_CLASS_TYPE (object_class),
-                    GTK_SIGNAL_OFFSET (GtkContainerClass, add),
-                    _gtk_marshal_VOID__OBJECT,
-                   GTK_TYPE_NONE, 1,
-                    GTK_TYPE_WIDGET);
+    g_signal_new (I_("add"),
+                 G_OBJECT_CLASS_TYPE (object_class),
+                 G_SIGNAL_RUN_FIRST,
+                 G_STRUCT_OFFSET (GtkContainerClass, add),
+                 NULL, NULL,
+                 _gtk_marshal_VOID__OBJECT,
+                 G_TYPE_NONE, 1,
+                 GTK_TYPE_WIDGET);
   container_signals[REMOVE] =
-    gtk_signal_new ("remove",
-                    GTK_RUN_FIRST,
-                    GTK_CLASS_TYPE (object_class),
-                    GTK_SIGNAL_OFFSET (GtkContainerClass, remove),
-                    _gtk_marshal_VOID__OBJECT,
-                   GTK_TYPE_NONE, 1,
-                    GTK_TYPE_WIDGET);
+    g_signal_new (I_("remove"),
+                 G_OBJECT_CLASS_TYPE (object_class),
+                 G_SIGNAL_RUN_FIRST,
+                 G_STRUCT_OFFSET (GtkContainerClass, remove),
+                 NULL, NULL,
+                 _gtk_marshal_VOID__OBJECT,
+                 G_TYPE_NONE, 1,
+                 GTK_TYPE_WIDGET);
   container_signals[CHECK_RESIZE] =
-    gtk_signal_new ("check_resize",
-                    GTK_RUN_LAST,
-                    GTK_CLASS_TYPE (object_class),
-                    GTK_SIGNAL_OFFSET (GtkContainerClass, check_resize),
-                   _gtk_marshal_VOID__VOID,
-                   GTK_TYPE_NONE, 0);
+    g_signal_new (I_("check_resize"),
+                 G_OBJECT_CLASS_TYPE (object_class),
+                 G_SIGNAL_RUN_LAST,
+                 G_STRUCT_OFFSET (GtkContainerClass, check_resize),
+                 NULL, NULL,
+                 _gtk_marshal_VOID__VOID,
+                 G_TYPE_NONE, 0);
   container_signals[SET_FOCUS_CHILD] =
-    gtk_signal_new ("set-focus-child",
-                    GTK_RUN_FIRST,
-                    GTK_CLASS_TYPE (object_class),
-                    GTK_SIGNAL_OFFSET (GtkContainerClass, set_focus_child),
-                    _gtk_marshal_VOID__OBJECT,
-                   GTK_TYPE_NONE, 1,
-                    GTK_TYPE_WIDGET);
+    g_signal_new (I_("set-focus-child"),
+                 G_OBJECT_CLASS_TYPE (object_class),
+                 G_SIGNAL_RUN_FIRST,
+                 G_STRUCT_OFFSET (GtkContainerClass, set_focus_child),
+                 NULL, NULL,
+                 _gtk_marshal_VOID__OBJECT,
+                 G_TYPE_NONE, 1,
+                 GTK_TYPE_WIDGET);
 }
 
-GtkType
+/**
+ * gtk_container_child_type: 
+ * @container: a #GtkContainer.
+ *
+ * Returns the type of the children supported by the container.
+ *
+ * Note that this may return %G_TYPE_NONE to indicate that no more
+ * children can be added, e.g. for a #GtkPaned which already has two 
+ * children.
+ *
+ * Return value: a #GType.
+ **/
+GType
 gtk_container_child_type (GtkContainer *container)
 {
-  GtkType slot;
+  GType slot;
   GtkContainerClass *class;
 
   g_return_val_if_fail (GTK_IS_CONTAINER (container), 0);
@@ -266,7 +284,7 @@ gtk_container_child_type (GtkContainer *container)
   if (class->child_type)
     slot = class->child_type (container);
   else
-    slot = GTK_TYPE_NONE;
+    slot = G_TYPE_NONE;
 
   return slot;
 }
@@ -319,6 +337,16 @@ container_set_child_property (GtkContainer       *container,
   g_value_unset (&tmp_value);
 }
 
+/**
+ * gtk_container_child_get_valist:
+ * @container: a #GtkContainer
+ * @child: a widget which is a child of @container
+ * @first_property_name: the name of the first property to get
+ * @var_args: a %NULL-terminated list of property names and #GValue*, 
+ *           starting with @first_prop_name.
+ * 
+ * Gets the values of one or more child properties for @child and @container.
+ **/
 void
 gtk_container_child_get_valist (GtkContainer *container,
                                GtkWidget    *child,
@@ -379,6 +407,15 @@ gtk_container_child_get_valist (GtkContainer *container,
   g_object_unref (container);
 }
 
+/**
+ * gtk_container_child_get_property:
+ * @container: a #GtkContainer
+ * @child: a widget which is a child of @container
+ * @property_name: the name of the property to get
+ * @value: a location to return the value
+ * 
+ * Gets the value of a child property for @child and @container.
+ **/
 void
 gtk_container_child_get_property (GtkContainer *container,
                                  GtkWidget    *child,
@@ -444,13 +481,22 @@ gtk_container_child_get_property (GtkContainer *container,
   g_object_unref (container);
 }
 
+/**
+ * gtk_container_child_set_valist:
+ * @container: a #GtkContainer
+ * @child: a widget which is a child of @container
+ * @first_property_name: the name of the first property to set
+ * @var_args: a %NULL-terminated list of property names and values, starting
+ *           with @first_prop_name.
+ * 
+ * Sets one or more child properties for @child and @container.
+ **/
 void
 gtk_container_child_set_valist (GtkContainer *container,
                                GtkWidget    *child,
                                const gchar  *first_property_name,
                                va_list       var_args)
 {
-  GObject *object;
   GObjectNotifyQueue *nqueue;
   const gchar *name;
 
@@ -461,7 +507,6 @@ gtk_container_child_set_valist (GtkContainer *container,
   g_object_ref (container);
   g_object_ref (child);
 
-  object = G_OBJECT (container);
   nqueue = g_object_notify_queue_freeze (G_OBJECT (child), _gtk_widget_child_property_notify_context);
   name = first_property_name;
   while (name)
@@ -510,13 +555,21 @@ gtk_container_child_set_valist (GtkContainer *container,
   g_object_unref (child);
 }
 
+/**
+ * gtk_container_child_set_property:
+ * @container: a #GtkContainer
+ * @child: a widget which is a child of @container
+ * @property_name: the name of the property to set
+ * @value: the value to set the property to
+ * 
+ * Sets a child property for @child and @container.
+ **/
 void
 gtk_container_child_set_property (GtkContainer *container,
                                  GtkWidget    *child,
                                  const gchar  *property_name,
                                  const GValue *value)
 {
-  GObject *object;
   GObjectNotifyQueue *nqueue;
   GParamSpec *pspec;
 
@@ -529,7 +582,6 @@ gtk_container_child_set_property (GtkContainer *container,
   g_object_ref (container);
   g_object_ref (child);
 
-  object = G_OBJECT (container);
   nqueue = g_object_notify_queue_freeze (G_OBJECT (child), _gtk_widget_child_property_notify_context);
   pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool, property_name,
                                    G_OBJECT_TYPE (container), TRUE);
@@ -552,6 +604,17 @@ gtk_container_child_set_property (GtkContainer *container,
   g_object_unref (child);
 }
 
+/**
+ * gtk_container_add_with_properties:
+ * @container: a #GtkContainer 
+ * @widget: a widget to be placed inside @container 
+ * @first_prop_name: the name of the first child property to set 
+ * @Varargs: a %NULL-terminated list of property names and values, starting
+ *           with @first_prop_name.
+ * 
+ * Adds @widget to @container, setting child properties at the same time.
+ * See gtk_container_add() and gtk_container_child_set() for more details.
+ **/
 void
 gtk_container_add_with_properties (GtkContainer *container,
                                   GtkWidget    *widget,
@@ -562,11 +625,11 @@ gtk_container_add_with_properties (GtkContainer *container,
   g_return_if_fail (GTK_IS_WIDGET (widget));
   g_return_if_fail (widget->parent == NULL);
 
-  gtk_widget_ref (GTK_WIDGET (container));
-  gtk_widget_ref (widget);
+  g_object_ref (container);
+  g_object_ref (widget);
   gtk_widget_freeze_child_notify (widget);
 
-  gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget);
+  g_signal_emit (container, container_signals[ADD], 0, widget);
   if (widget->parent)
     {
       va_list var_args;
@@ -577,10 +640,20 @@ gtk_container_add_with_properties (GtkContainer *container,
     }
 
   gtk_widget_thaw_child_notify (widget);
-  gtk_widget_unref (widget);
-  gtk_widget_unref (GTK_WIDGET (container));
+  g_object_unref (widget);
+  g_object_unref (container);
 }
 
+/**
+ * gtk_container_child_set:
+ * @container: a #GtkContainer
+ * @child: a widget which is a child of @container
+ * @first_prop_name: the name of the first property to set
+ * @Varargs: a %NULL-terminated list of property names and values, starting
+ *           with @first_prop_name.
+ * 
+ * Sets one or more child properties for @child and @container.
+ **/
 void
 gtk_container_child_set (GtkContainer      *container,
                         GtkWidget         *child,
@@ -598,6 +671,16 @@ gtk_container_child_set (GtkContainer      *container,
   va_end (var_args);
 }
 
+/**
+ * gtk_container_child_get:
+ * @container: a #GtkContainer
+ * @child: a widget which is a child of @container
+ * @first_prop_name: the name of the first property to get
+ * @Varargs: a %NULL-terminated list of property names and #GValue*, 
+ *           starting with @first_prop_name.
+ * 
+ * Gets the values of one or more child properties for @child and @container.
+ **/
 void
 gtk_container_child_get (GtkContainer      *container,
                         GtkWidget         *child,
@@ -606,9 +689,7 @@ gtk_container_child_get (GtkContainer      *container,
 {
   va_list var_args;
   
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
-  g_return_if_fail (child != NULL);
   g_return_if_fail (GTK_IS_WIDGET (child));
   g_return_if_fail (child->parent == GTK_WIDGET (container));
 
@@ -617,59 +698,85 @@ gtk_container_child_get (GtkContainer      *container,
   va_end (var_args);
 }
 
+/**
+ * gtk_container_class_install_child_property:
+ * @cclass: a #GtkContainerClass
+ * @property_id: the id for the property
+ * @pspec: the #GParamSpec for the property
+ * 
+ * Installs a child property on a container class. 
+ **/
 void
-gtk_container_class_install_child_property (GtkContainerClass *class,
+gtk_container_class_install_child_property (GtkContainerClass *cclass,
                                            guint              property_id,
                                            GParamSpec        *pspec)
 {
-  g_return_if_fail (GTK_IS_CONTAINER_CLASS (class));
+  g_return_if_fail (GTK_IS_CONTAINER_CLASS (cclass));
   g_return_if_fail (G_IS_PARAM_SPEC (pspec));
   if (pspec->flags & G_PARAM_WRITABLE)
-    g_return_if_fail (class->set_child_property != NULL);
+    g_return_if_fail (cclass->set_child_property != NULL);
   if (pspec->flags & G_PARAM_READABLE)
-    g_return_if_fail (class->get_child_property != NULL);
+    g_return_if_fail (cclass->get_child_property != NULL);
   g_return_if_fail (property_id > 0);
   g_return_if_fail (PARAM_SPEC_PARAM_ID (pspec) == 0);  /* paranoid */
   if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
     g_return_if_fail ((pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY)) == 0);
 
-  if (g_param_spec_pool_lookup (_gtk_widget_child_property_pool, pspec->name, G_OBJECT_CLASS_TYPE (class), FALSE))
+  if (g_param_spec_pool_lookup (_gtk_widget_child_property_pool, pspec->name, G_OBJECT_CLASS_TYPE (cclass), FALSE))
     {
-      g_warning (G_STRLOC ": class `%s' already contains a property named `%s'",
-                G_OBJECT_CLASS_NAME (class),
+      g_warning (G_STRLOC ": class `%s' already contains a child property named `%s'",
+                G_OBJECT_CLASS_NAME (cclass),
                 pspec->name);
       return;
     }
   g_param_spec_ref (pspec);
   g_param_spec_sink (pspec);
   PARAM_SPEC_SET_PARAM_ID (pspec, property_id);
-  g_param_spec_pool_insert (_gtk_widget_child_property_pool, pspec, G_OBJECT_CLASS_TYPE (class));
+  g_param_spec_pool_insert (_gtk_widget_child_property_pool, pspec, G_OBJECT_CLASS_TYPE (cclass));
 }
 
+/**
+ * gtk_container_class_find_child_property:
+ * @cclass: a #GtkContainerClass
+ * @property_name: the name of the child property to find
+ * @returns: the #GParamSpec of the child property or %NULL if @class has no
+ *   child property with that name.
+ *
+ * Finds a child property of a container class by name.
+ */
 GParamSpec*
-gtk_container_class_find_child_property (GObjectClass *class,
+gtk_container_class_find_child_property (GObjectClass *cclass,
                                         const gchar  *property_name)
 {
-  g_return_val_if_fail (GTK_IS_CONTAINER_CLASS (class), NULL);
+  g_return_val_if_fail (GTK_IS_CONTAINER_CLASS (cclass), NULL);
   g_return_val_if_fail (property_name != NULL, NULL);
 
   return g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
                                   property_name,
-                                  G_OBJECT_CLASS_TYPE (class),
+                                  G_OBJECT_CLASS_TYPE (cclass),
                                   TRUE);
 }
 
-GParamSpec** /* free result */
-gtk_container_class_list_child_properties (GObjectClass *class,
+/**
+ * gtk_container_class_list_child_properties:
+ * @cclass: a #GtkContainerClass
+ * @n_properties: location to return the number of child properties found
+ * @returns: a newly allocated array of #GParamSpec*. The array must be 
+ *           freed with g_free().
+ *
+ * Returns all child properties of a container class.
+ */
+GParamSpec**
+gtk_container_class_list_child_properties (GObjectClass *cclass,
                                           guint        *n_properties)
 {
   GParamSpec **pspecs;
   guint n;
 
-  g_return_val_if_fail (GTK_IS_CONTAINER_CLASS (class), NULL);
+  g_return_val_if_fail (GTK_IS_CONTAINER_CLASS (cclass), NULL);
 
   pspecs = g_param_spec_pool_list (_gtk_widget_child_property_pool,
-                                  G_OBJECT_CLASS_TYPE (class),
+                                  G_OBJECT_CLASS_TYPE (cclass),
                                   &n);
   if (n_properties)
     *n_properties = n;
@@ -681,14 +788,14 @@ static void
 gtk_container_add_unimplemented (GtkContainer     *container,
                                 GtkWidget        *widget)
 {
-  g_warning ("GtkContainerClass::add not implemented for `%s'", gtk_type_name (GTK_OBJECT_TYPE (container)));
+  g_warning ("GtkContainerClass::add not implemented for `%s'", g_type_name (G_TYPE_FROM_INSTANCE (container)));
 }
 
 static void
 gtk_container_remove_unimplemented (GtkContainer     *container,
                                    GtkWidget        *widget)
 {
-  g_warning ("GtkContainerClass::remove not implemented for `%s'", gtk_type_name (GTK_OBJECT_TYPE (container)));
+  g_warning ("GtkContainerClass::remove not implemented for `%s'", g_type_name (G_TYPE_FROM_INSTANCE (container)));
 }
 
 static void
@@ -704,12 +811,7 @@ gtk_container_init (GtkContainer *container)
 static void
 gtk_container_destroy (GtkObject *object)
 {
-  GtkContainer *container;
-
-  g_return_if_fail (object != NULL);
-  g_return_if_fail (GTK_IS_CONTAINER (object));
-
-  container = GTK_CONTAINER (object);
+  GtkContainer *container = GTK_CONTAINER (object);
   
   if (GTK_CONTAINER_RESIZE_PENDING (container))
     _gtk_container_dequeue_resize_handler (container);
@@ -732,9 +834,7 @@ gtk_container_set_property (GObject         *object,
                            const GValue    *value,
                            GParamSpec      *pspec)
 {
-  GtkContainer *container;
-
-  container = GTK_CONTAINER (object);
+  GtkContainer *container = GTK_CONTAINER (object);
 
   switch (prop_id)
     {
@@ -759,9 +859,7 @@ gtk_container_get_property (GObject         *object,
                            GValue          *value,
                            GParamSpec      *pspec)
 {
-  GtkContainer *container;
-
-  container = GTK_CONTAINER (object);
+  GtkContainer *container = GTK_CONTAINER (object);
   
   switch (prop_id)
     {
@@ -783,6 +881,8 @@ gtk_container_get_property (GObject         *object,
  * @border_width: amount of blank space to leave <emphasis>outside</emphasis> the container.
  *   Valid values are in the range 0-65535 pixels.
  *
+ * Sets the border width of the container.
+ *
  * The border width of a container is the amount of space to leave
  * around the outside of the container. The only exception to this is
  * #GtkWindow; because toplevel windows can't leave space outside,
@@ -795,13 +895,12 @@ void
 gtk_container_set_border_width (GtkContainer *container,
                                guint         border_width)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
 
   if (container->border_width != border_width)
     {
       container->border_width = border_width;
-      g_object_notify (G_OBJECT (container), "border_width");
+      g_object_notify (G_OBJECT (container), "border-width");
       
       if (GTK_WIDGET_REALIZED (container))
        gtk_widget_queue_resize (GTK_WIDGET (container));
@@ -843,9 +942,7 @@ void
 gtk_container_add (GtkContainer *container,
                   GtkWidget    *widget)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
-  g_return_if_fail (widget != NULL);
   g_return_if_fail (GTK_IS_WIDGET (widget));
 
   if (widget->parent != NULL)
@@ -859,7 +956,7 @@ gtk_container_add (GtkContainer *container,
       return;
     }
 
-  gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget);
+  g_signal_emit (container, container_signals[ADD], 0, widget);
 }
 
 /**
@@ -872,19 +969,26 @@ gtk_container_add (GtkContainer *container,
  * may be the last reference held; so removing a widget from its
  * container can destroy that widget. If you want to use @widget
  * again, you need to add a reference to it while it's not inside
- * a container, using g_object_ref().
+ * a container, using g_object_ref(). If you don't want to use @widget
+ * again it's usually more efficient to simply destroy it directly
+ * using gtk_widget_destroy() since this will remove it from the
+ * container and help break any circular reference count cycles.
  **/
 void
 gtk_container_remove (GtkContainer *container,
                      GtkWidget    *widget)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
-  g_return_if_fail (widget != NULL);
   g_return_if_fail (GTK_IS_WIDGET (widget));
-  g_return_if_fail (widget->parent == GTK_WIDGET (container));
+
+  /* When using the deprecated API of the toolbar, it is possible
+   * to legitimately call this function with a widget that is not
+   * a direct child of the container.
+   */
+  g_return_if_fail (GTK_IS_TOOLBAR (container) ||
+                   widget->parent == GTK_WIDGET (container));
   
-  gtk_signal_emit (GTK_OBJECT (container), container_signals[REMOVE], widget);
+  g_signal_emit (container, container_signals[REMOVE], 0, widget);
 }
 
 void
@@ -897,11 +1001,21 @@ _gtk_container_dequeue_resize_handler (GtkContainer *container)
   GTK_PRIVATE_UNSET_FLAG (container, GTK_RESIZE_PENDING);
 }
 
+/**
+ * gtk_container_set_resize_mode:
+ * @container: a #GtkContainer.
+ * @resize_mode: the new resize mode.
+ * 
+ * Sets the resize mode for the container.
+ *
+ * The resize mode of a container determines whether a resize request 
+ * will be passed to the container's parent, queued for later execution
+ * or executed immediately.
+ **/
 void
 gtk_container_set_resize_mode (GtkContainer  *container,
                               GtkResizeMode  resize_mode)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
   g_return_if_fail (resize_mode <= GTK_RESIZE_IMMEDIATE);
   
@@ -909,7 +1023,6 @@ gtk_container_set_resize_mode (GtkContainer  *container,
       resize_mode == GTK_RESIZE_PARENT)
     {
       resize_mode = GTK_RESIZE_QUEUE;
-      g_object_notify (G_OBJECT (container), "resize_mode");
     }
   
   if (container->resize_mode != resize_mode)
@@ -917,7 +1030,7 @@ gtk_container_set_resize_mode (GtkContainer  *container,
       container->resize_mode = resize_mode;
       
       gtk_widget_queue_resize (GTK_WIDGET (container));
-      g_object_notify (G_OBJECT (container), "resize_mode");
+      g_object_notify (G_OBJECT (container), "resize-mode");
     }
 }
 
@@ -938,6 +1051,16 @@ gtk_container_get_resize_mode (GtkContainer *container)
   return container->resize_mode;
 }
 
+/**
+ * gtk_container_set_reallocate_redraws:
+ * @container: a #GtkContainer.
+ * @needs_redraws: the new value for the container's @reallocate_redraws flag.
+ *
+ * Sets the @reallocate_redraws flag of the container to the given value.
+ * 
+ * Containers requesting reallocation redraws get automatically
+ * redrawn if any of their children changed allocation. 
+ **/ 
 void
 gtk_container_set_reallocate_redraws (GtkContainer *container,
                                      gboolean      needs_redraws)
@@ -950,9 +1073,7 @@ gtk_container_set_reallocate_redraws (GtkContainer *container,
 static GtkContainer*
 gtk_container_get_resize_container (GtkContainer *container)
 {
-  GtkWidget *widget;
-
-  widget = GTK_WIDGET (container);
+  GtkWidget *widget = GTK_WIDGET (container);
 
   while (widget->parent)
     {
@@ -967,8 +1088,6 @@ gtk_container_get_resize_container (GtkContainer *container)
 static gboolean
 gtk_container_idle_sizer (gpointer data)
 {
-  GDK_THREADS_ENTER ();
-
   /* we may be invoked with a container_resize_queue of NULL, because
    * queue_resize could have been adding an extra idle function while
    * the queue still got processed. we better just ignore such case
@@ -991,8 +1110,6 @@ gtk_container_idle_sizer (gpointer data)
 
   gdk_window_process_all_updates ();
 
-  GDK_THREADS_LEAVE ();
-
   return FALSE;
 }
 
@@ -1000,28 +1117,28 @@ void
 _gtk_container_queue_resize (GtkContainer *container)
 {
   GtkContainer *resize_container;
+  GtkWidget *widget;
   
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
 
+  widget = GTK_WIDGET (container);
   resize_container = gtk_container_get_resize_container (container);
   
-  if (resize_container)
+  while (TRUE)
     {
-      GtkWidget *widget = GTK_WIDGET (container);
+      GTK_PRIVATE_SET_FLAG (widget, GTK_ALLOC_NEEDED);
+      GTK_PRIVATE_SET_FLAG (widget, GTK_REQUEST_NEEDED);
+      if ((resize_container && widget == GTK_WIDGET (resize_container)) ||
+         !widget->parent)
+       break;
       
-      while (!GTK_WIDGET_ALLOC_NEEDED (widget) || !GTK_WIDGET_REQUEST_NEEDED (widget))
-       {
-         GTK_PRIVATE_SET_FLAG (widget, GTK_ALLOC_NEEDED);
-         GTK_PRIVATE_SET_FLAG (widget, GTK_REQUEST_NEEDED);
-         if (widget == GTK_WIDGET (resize_container))
-           break;
-         
-         widget = widget->parent;
-       }
+      widget = widget->parent;
+    }
       
+  if (resize_container)
+    {
       if (GTK_WIDGET_VISIBLE (resize_container) &&
-         (GTK_WIDGET_TOPLEVEL (resize_container) || GTK_WIDGET_DRAWABLE (resize_container)))
+         (GTK_WIDGET_TOPLEVEL (resize_container) || GTK_WIDGET_REALIZED (resize_container)))
        {
          switch (resize_container->resize_mode)
            {
@@ -1030,9 +1147,9 @@ _gtk_container_queue_resize (GtkContainer *container)
                {
                  GTK_PRIVATE_SET_FLAG (resize_container, GTK_RESIZE_PENDING);
                  if (container_resize_queue == NULL)
-                   gtk_idle_add_priority (GTK_PRIORITY_RESIZE,
-                                          gtk_container_idle_sizer,
-                                          NULL);
+                   gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE,
+                                    gtk_container_idle_sizer,
+                                    NULL, NULL);
                  container_resize_queue = g_slist_prepend (container_resize_queue, resize_container);
                }
              break;
@@ -1042,7 +1159,7 @@ _gtk_container_queue_resize (GtkContainer *container)
              break;
 
            case GTK_RESIZE_PARENT:
-             /* Ignore, should not be reached */
+             g_assert_not_reached ();
              break;
            }
        }
@@ -1060,23 +1177,17 @@ _gtk_container_queue_resize (GtkContainer *container)
 void
 gtk_container_check_resize (GtkContainer *container)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
   
-  gtk_signal_emit (GTK_OBJECT (container), container_signals[CHECK_RESIZE]);
+  g_signal_emit (container, container_signals[CHECK_RESIZE], 0);
 }
 
 static void
 gtk_container_real_check_resize (GtkContainer *container)
 {
-  GtkWidget *widget;
+  GtkWidget *widget = GTK_WIDGET (container);
   GtkRequisition requisition;
   
-  g_return_if_fail (container != NULL);
-  g_return_if_fail (GTK_IS_CONTAINER (container));
-  
-  widget = GTK_WIDGET (container);
-  
   gtk_widget_size_request (widget, &requisition);
   
   if (requisition.width > widget->allocation.width ||
@@ -1111,7 +1222,6 @@ gtk_container_resize_children (GtkContainer *container)
    * containers that have an idle sizer pending must be flagged with
    * RESIZE_PENDING.
    */
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
 
   widget = GTK_WIDGET (container);
@@ -1138,7 +1248,6 @@ gtk_container_forall (GtkContainer *container,
 {
   GtkContainerClass *class;
 
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
   g_return_if_fail (callback != NULL);
 
@@ -1166,7 +1275,6 @@ gtk_container_foreach (GtkContainer *container,
 {
   GtkContainerClass *class;
   
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
   g_return_if_fail (callback != NULL);
 
@@ -1193,12 +1301,12 @@ gtk_container_foreach_unmarshal (GtkWidget *child,
   
   /* first argument */
   args[0].name = NULL;
-  args[0].type = GTK_OBJECT_TYPE (child);
+  args[0].type = G_TYPE_FROM_INSTANCE (child);
   GTK_VALUE_OBJECT (args[0]) = GTK_OBJECT (child);
   
   /* location for return value */
   args[1].name = NULL;
-  args[1].type = GTK_TYPE_NONE;
+  args[1].type = G_TYPE_NONE;
   
   fdata->callback (fdata->container, fdata->callback_data, 1, args);
 }
@@ -1210,7 +1318,6 @@ gtk_container_foreach_full (GtkContainer       *container,
                            gpointer            callback_data,
                            GtkDestroyNotify    notify)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
 
   if (marshal)
@@ -1238,20 +1345,26 @@ void
 gtk_container_set_focus_child (GtkContainer *container,
                               GtkWidget    *widget)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
   if (widget)
     g_return_if_fail (GTK_IS_WIDGET (widget));
 
-  gtk_signal_emit (GTK_OBJECT (container), container_signals[SET_FOCUS_CHILD], widget);
+  g_signal_emit (container, container_signals[SET_FOCUS_CHILD], 0, widget);
 }
 
+/**
+ * gtk_container_get_children:
+ * @container: a #GtkContainer.
+ * 
+ * Returns the container's non-internal children. See
+ * gtk_container_forall() for details on what constitutes an "internal" child. 
+ *
+ * Return value: a newly-allocated list of the container's non-internal children.
+ **/
 GList*
 gtk_container_get_children (GtkContainer *container)
 {
-  GList *children;
-
-  children = NULL;
+  GList *children = NULL;
 
   gtk_container_foreach (container,
                         gtk_container_children_callback,
@@ -1295,7 +1408,7 @@ gtk_container_child_default_composite_name (GtkContainer *container,
                        &data);
   
   name = g_strdup_printf ("%s-%u",
-                         gtk_type_name (GTK_OBJECT_TYPE (child)),
+                         g_type_name (G_TYPE_FROM_INSTANCE (child)),
                          data.index);
 
   return name;
@@ -1305,9 +1418,7 @@ gchar*
 _gtk_container_child_composite_name (GtkContainer *container,
                                    GtkWidget    *child)
 {
-  g_return_val_if_fail (container != NULL, NULL);
   g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
-  g_return_val_if_fail (child != NULL, NULL);
   g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
   g_return_val_if_fail (child->parent == GTK_WIDGET (container), NULL);
 
@@ -1319,7 +1430,7 @@ _gtk_container_child_composite_name (GtkContainer *container,
       if (!quark_composite_name)
        quark_composite_name = g_quark_from_static_string ("gtk-composite-name");
 
-      name = gtk_object_get_data_by_id (GTK_OBJECT (child), quark_composite_name);
+      name = g_object_get_qdata (G_OBJECT (child), quark_composite_name);
       if (!name)
        {
          GtkContainerClass *class;
@@ -1341,18 +1452,16 @@ static void
 gtk_container_real_set_focus_child (GtkContainer     *container,
                                    GtkWidget        *child)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
-  if (child)
-    g_return_if_fail (GTK_IS_WIDGET (child));
+  g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
 
   if (child != container->focus_child)
     {
       if (container->focus_child)
-       gtk_widget_unref (container->focus_child);
+       g_object_unref (container->focus_child);
       container->focus_child = child;
       if (container->focus_child)
-       gtk_widget_ref (container->focus_child);
+       g_object_ref (container->focus_child);
     }
 
 
@@ -1360,21 +1469,35 @@ gtk_container_real_set_focus_child (GtkContainer     *container,
    */
   if (container->focus_child)
     {
-      GtkAdjustment *adjustment;
-      
-      adjustment = gtk_object_get_data_by_id (GTK_OBJECT (container), vadjustment_key_id);
-      if (adjustment)
-       gtk_adjustment_clamp_page (adjustment,
-                                  container->focus_child->allocation.y,
-                                  (container->focus_child->allocation.y +
-                                   container->focus_child->allocation.height));
-
-      adjustment = gtk_object_get_data_by_id (GTK_OBJECT (container), hadjustment_key_id);
-      if (adjustment)
-       gtk_adjustment_clamp_page (adjustment,
-                                  container->focus_child->allocation.x,
-                                  (container->focus_child->allocation.x +
-                                   container->focus_child->allocation.width));
+      GtkAdjustment *hadj;
+      GtkAdjustment *vadj;
+      GtkWidget *focus_child;
+      gint x, y;
+
+      hadj = g_object_get_qdata (G_OBJECT (container), hadjustment_key_id);   
+      vadj = g_object_get_qdata (G_OBJECT (container), vadjustment_key_id);
+      if (hadj || vadj) 
+       {
+
+         focus_child = container->focus_child;
+         while (GTK_IS_CONTAINER (focus_child) && 
+                GTK_CONTAINER (focus_child)->focus_child)
+           {
+             focus_child = GTK_CONTAINER (focus_child)->focus_child;
+           }
+         
+         gtk_widget_translate_coordinates (focus_child, container->focus_child, 
+                                           0, 0, &x, &y);
+
+          x += container->focus_child->allocation.x;
+          y += container->focus_child->allocation.y;
+         
+         if (vadj)
+           gtk_adjustment_clamp_page (vadj, y, y + focus_child->allocation.height);
+         
+         if (hadj)
+           gtk_adjustment_clamp_page (hadj, x, x + focus_child->allocation.width);
+       }
     }
 }
 
@@ -1384,6 +1507,20 @@ get_focus_chain (GtkContainer *container)
   return g_object_get_data (G_OBJECT (container), "gtk-container-focus-chain");
 }
 
+/* same as gtk_container_get_children, except it includes internals
+ */
+static GList *
+gtk_container_get_all_children (GtkContainer *container)
+{
+  GList *children = NULL;
+
+  gtk_container_forall (container,
+                        gtk_container_children_callback,
+                        &children);
+
+  return children;
+}
+
 static gboolean
 gtk_container_focus (GtkWidget        *widget,
                      GtkDirectionType  direction)
@@ -1415,7 +1552,7 @@ gtk_container_focus (GtkWidget        *widget,
       if (container->has_focus_chain)
        children = g_list_copy (get_focus_chain (container));
       else
-       children = gtk_container_get_children (container);
+       children = gtk_container_get_all_children (container);
 
       if (container->has_focus_chain &&
          (direction == GTK_DIR_TAB_FORWARD ||
@@ -1427,7 +1564,7 @@ gtk_container_focus (GtkWidget        *widget,
            sorted_children = g_list_reverse (sorted_children);
        }
       else
-       sorted_children = gtk_container_focus_sort (container, children, direction);
+       sorted_children = _gtk_container_focus_sort (container, children, direction, NULL);
       
       return_val = gtk_container_focus_move (container, sorted_children, direction);
 
@@ -1440,10 +1577,12 @@ gtk_container_focus (GtkWidget        *widget,
 
 static gint
 tab_compare (gconstpointer a,
-            gconstpointer b)
+            gconstpointer b,
+            gpointer      data)
 {
   const GtkWidget *child1 = a;
   const GtkWidget *child2 = b;
+  GtkTextDirection text_direction = GPOINTER_TO_INT (data);
 
   gint y1 = child1->allocation.y + child1->allocation.height / 2;
   gint y2 = child2->allocation.y + child2->allocation.height / 2;
@@ -1453,7 +1592,10 @@ tab_compare (gconstpointer a,
       gint x1 = child1->allocation.x + child1->allocation.width / 2;
       gint x2 = child2->allocation.x + child2->allocation.width / 2;
       
-      return (x1 < x2) ? -1 : ((x1 == x2) ? 0 : 1);
+      if (text_direction == GTK_TEXT_DIR_RTL) 
+       return (x1 < x2) ? 1 : ((x1 == x2) ? 0 : -1);
+      else
+       return (x1 < x2) ? -1 : ((x1 == x2) ? 0 : 1);
     }
   else
     return (y1 < y2) ? -1 : 1;
@@ -1462,9 +1604,11 @@ tab_compare (gconstpointer a,
 static GList *
 gtk_container_focus_sort_tab (GtkContainer     *container,
                              GList            *children,
-                             GtkDirectionType  direction)
+                             GtkDirectionType  direction,
+                             GtkWidget        *old_focus)
 {
-  children = g_list_sort (children, tab_compare);
+  GtkTextDirection text_direction = gtk_widget_get_direction (GTK_WIDGET (container));
+  children = g_list_sort_with_data (children, tab_compare, GINT_TO_POINTER (text_direction));
 
   /* if we are going backwards then reverse the order
    *  of the children.
@@ -1581,27 +1725,27 @@ up_down_compare (gconstpointer a,
 static GList *
 gtk_container_focus_sort_up_down (GtkContainer     *container,
                                  GList            *children,
-                                 GtkDirectionType  direction)
+                                 GtkDirectionType  direction,
+                                 GtkWidget        *old_focus)
 {
   CompareInfo compare;
   GList *tmp_list;
-  GtkWidget *old_focus;
+  GdkRectangle old_allocation;
 
   compare.container = container;
   compare.reverse = (direction == GTK_DIR_UP);
 
-  old_focus = find_old_focus (container, children);
-  if (old_focus)
+  if (!old_focus)
+      old_focus = find_old_focus (container, children);
+  
+  if (old_focus && get_allocation_coords (container, old_focus, &old_allocation))
     {
-      GdkRectangle old_allocation;
       gint compare_x1;
       gint compare_x2;
       gint compare_y;
 
       /* Delete widgets from list that don't match minimum criteria */
 
-      get_allocation_coords (container, old_focus, &old_allocation);
-
       compare_x1 = old_allocation.x;
       compare_x2 = old_allocation.x + old_allocation.width;
 
@@ -1620,17 +1764,20 @@ gtk_container_focus_sort_up_down (GtkContainer     *container,
          
          if (child != old_focus)
            {
-             get_allocation_coords (container, child, &child_allocation);
-             
-             child_x1 = child_allocation.x;
-             child_x2 = child_allocation.x + child_allocation.width;
-             
-             if ((child_x2 <= compare_x1 || child_x1 >= compare_x2) /* No horizontal overlap */ ||
-                 (direction == GTK_DIR_DOWN && child_allocation.y + child_allocation.height < compare_y) || /* Not below */
-                 (direction == GTK_DIR_UP && child_allocation.y > compare_y)) /* Not above */
+             if (get_allocation_coords (container, child, &child_allocation))
                {
-                 children = g_list_delete_link (children, tmp_list);
+                 child_x1 = child_allocation.x;
+                 child_x2 = child_allocation.x + child_allocation.width;
+                 
+                 if ((child_x2 <= compare_x1 || child_x1 >= compare_x2) /* No horizontal overlap */ ||
+                     (direction == GTK_DIR_DOWN && child_allocation.y + child_allocation.height < compare_y) || /* Not below */
+                     (direction == GTK_DIR_UP && child_allocation.y > compare_y)) /* Not above */
+                   {
+                     children = g_list_delete_link (children, tmp_list);
+                   }
                }
+             else
+               children = g_list_delete_link (children, tmp_list);
            }
          
          tmp_list = next;
@@ -1705,28 +1852,27 @@ left_right_compare (gconstpointer a,
 static GList *
 gtk_container_focus_sort_left_right (GtkContainer     *container,
                                     GList            *children,
-                                    GtkDirectionType  direction)
+                                    GtkDirectionType  direction,
+                                    GtkWidget        *old_focus)
 {
   CompareInfo compare;
   GList *tmp_list;
-  GtkWidget *old_focus;
+  GdkRectangle old_allocation;
 
   compare.container = container;
   compare.reverse = (direction == GTK_DIR_LEFT);
+
+  if (!old_focus)
+    old_focus = find_old_focus (container, children);
   
-  old_focus = find_old_focus (container, children);
-  if (old_focus)
+  if (old_focus && get_allocation_coords (container, old_focus, &old_allocation))
     {
-      GdkRectangle old_allocation;
-
       gint compare_y1;
       gint compare_y2;
       gint compare_x;
       
       /* Delete widgets from list that don't match minimum criteria */
 
-      get_allocation_coords (container, old_focus, &old_allocation);
-
       compare_y1 = old_allocation.y;
       compare_y2 = old_allocation.y + old_allocation.height;
 
@@ -1745,17 +1891,20 @@ gtk_container_focus_sort_left_right (GtkContainer     *container,
          
          if (child != old_focus)
            {
-             get_allocation_coords (container, child, &child_allocation);
-             
-             child_y1 = child_allocation.y;
-             child_y2 = child_allocation.y + child_allocation.height;
-             
-             if ((child_y2 <= compare_y1 || child_y1 >= compare_y2) /* No vertical overlap */ ||
-                 (direction == GTK_DIR_RIGHT && child_allocation.x + child_allocation.width < compare_x) || /* Not to left */
-                 (direction == GTK_DIR_LEFT && child_allocation.x > compare_x)) /* Not to right */
+             if (get_allocation_coords (container, child, &child_allocation))
                {
-                 children = g_list_delete_link (children, tmp_list);
+                 child_y1 = child_allocation.y;
+                 child_y2 = child_allocation.y + child_allocation.height;
+                 
+                 if ((child_y2 <= compare_y1 || child_y1 >= compare_y2) /* No vertical overlap */ ||
+                     (direction == GTK_DIR_RIGHT && child_allocation.x + child_allocation.width < compare_x) || /* Not to left */
+                     (direction == GTK_DIR_LEFT && child_allocation.x > compare_x)) /* Not to right */
+                   {
+                     children = g_list_delete_link (children, tmp_list);
+                   }
                }
+             else
+               children = g_list_delete_link (children, tmp_list);
            }
          
          tmp_list = next;
@@ -1803,6 +1952,11 @@ gtk_container_focus_sort_left_right (GtkContainer     *container,
  * @children:  a list of descendents of @container (they don't
  *             have to be direct children.
  * @direction: focus direction
+ * @old_focus: widget to use for the starting position, or %NULL
+ *             to determine this automatically.
+ *             [ Note, this argument isn't used for GTK_DIR_TAB_*,
+ *               which is the only @direction we use currently,
+ *               so perhaps this argument should be removed ]
  * 
  * Sorts @children in the correct order for focusing with
  * direction type @direction.
@@ -1811,24 +1965,32 @@ gtk_container_focus_sort_left_right (GtkContainer     *container,
  *   with children that aren't suitable for focusing in this direction
  *   removed.
  **/
-static GList *
-gtk_container_focus_sort (GtkContainer     *container,
-                         GList            *children,
-                         GtkDirectionType  direction)
+GList *
+_gtk_container_focus_sort (GtkContainer     *container,
+                          GList            *children,
+                          GtkDirectionType  direction,
+                          GtkWidget        *old_focus)
 {
-  children = g_list_copy (children);
+  GList *visible_children = NULL;
+
+  while (children)
+    {
+      if (GTK_WIDGET_REALIZED (children->data))
+       visible_children = g_list_prepend (visible_children, children->data);
+      children = children->next;
+    }
   
   switch (direction)
     {
     case GTK_DIR_TAB_FORWARD:
     case GTK_DIR_TAB_BACKWARD:
-      return gtk_container_focus_sort_tab (container, children, direction);
+      return gtk_container_focus_sort_tab (container, visible_children, direction, old_focus);
     case GTK_DIR_UP:
     case GTK_DIR_DOWN:
-      return gtk_container_focus_sort_up_down (container, children, direction);
+      return gtk_container_focus_sort_up_down (container, visible_children, direction, old_focus);
     case GTK_DIR_LEFT:
     case GTK_DIR_RIGHT:
-      return gtk_container_focus_sort_left_right (container, children, direction);
+      return gtk_container_focus_sort_left_right (container, visible_children, direction, old_focus);
     }
 
   g_assert_not_reached ();
@@ -1900,15 +2062,28 @@ chain_widget_destroyed (GtkWidget *widget,
 
   chain = g_list_remove (chain, widget);
 
-  g_signal_handlers_disconnect_by_func (G_OBJECT (widget),
+  g_signal_handlers_disconnect_by_func (widget,
                                         chain_widget_destroyed,
                                         user_data);
   
   g_object_set_data (G_OBJECT (container),
-                     "gtk-container-focus-chain",
+                     I_("gtk-container-focus-chain"),
                      chain);  
 }
 
+/**
+ * gtk_container_set_focus_chain: 
+ * @container: a #GtkContainer.
+ * @focusable_widgets: the new focus chain.
+ *
+ * Sets a focus chain, overriding the one computed automatically by GTK+.
+ * 
+ * In principle each widget in the chain should be a descendant of the 
+ * container, but this is not enforced by this method, since it's allowed 
+ * to set the focus chain before you pack the widgets, or have a widget 
+ * in the chain that isn't always packed. The necessary checks are done 
+ * when the focus chain is actually traversed.
+ **/
 void
 gtk_container_set_focus_chain (GtkContainer *container,
                                GList        *focusable_widgets)
@@ -1938,10 +2113,10 @@ gtk_container_set_focus_chain (GtkContainer *container,
 
       chain = g_list_prepend (chain, tmp_list->data);
 
-      gtk_signal_connect (GTK_OBJECT (tmp_list->data),
-                          "destroy",
-                          GTK_SIGNAL_FUNC (chain_widget_destroyed),
-                          container);
+      g_signal_connect (tmp_list->data,
+                        "destroy",
+                        G_CALLBACK (chain_widget_destroyed),
+                        container);
       
       tmp_list = g_list_next (tmp_list);
     }
@@ -1949,7 +2124,7 @@ gtk_container_set_focus_chain (GtkContainer *container,
   chain = g_list_reverse (chain);
   
   g_object_set_data (G_OBJECT (container),
-                     "gtk-container-focus-chain",
+                     I_("gtk-container-focus-chain"),
                      chain);
 }
 
@@ -1962,14 +2137,14 @@ gtk_container_set_focus_chain (GtkContainer *container,
  *                     no additional reference count is added to the
  *                     individual widgets in the focus chain.
  * 
- * Retrieve the focus chain of the container, if one has been
- * set explicitely. If no focus chain has been explicitely
+ * Retrieves the focus chain of the container, if one has been
+ * set explicitly. If no focus chain has been explicitly
  * set, GTK+ computes the focus chain based on the positions
  * of the children. In that case, GTK+ stores %NULL in
  * @focusable_widgets and returns %FALSE.
  *
- * Return value: %TRUE if the focus chain of the container,
- *   has been set explicitely.
+ * Return value: %TRUE if the focus chain of the container 
+ * has been set explicitly.
  **/
 gboolean
 gtk_container_get_focus_chain (GtkContainer *container,
@@ -1988,6 +2163,12 @@ gtk_container_get_focus_chain (GtkContainer *container,
   return container->has_focus_chain;
 }
 
+/**
+ * gtk_container_unset_focus_chain:
+ * @container: a #GtkContainer.
+ * 
+ * Removes a focus chain explicitly set with gtk_container_set_focus_chain().
+ **/
 void
 gtk_container_unset_focus_chain (GtkContainer  *container)
 {  
@@ -2002,13 +2183,14 @@ gtk_container_unset_focus_chain (GtkContainer  *container)
       
       container->has_focus_chain = FALSE;
       
-      g_object_set_data (G_OBJECT (container), "gtk-container-focus-chain",
+      g_object_set_data (G_OBJECT (container), 
+                         I_("gtk-container-focus-chain"),
                          NULL);
 
       tmp_list = chain;
       while (tmp_list != NULL)
         {
-          g_signal_handlers_disconnect_by_func (G_OBJECT (tmp_list->data),
+          g_signal_handlers_disconnect_by_func (tmp_list->data,
                                                 chain_widget_destroyed,
                                                 container);
           
@@ -2019,22 +2201,36 @@ gtk_container_unset_focus_chain (GtkContainer  *container)
     }
 }
 
+/**
+ * gtk_container_set_focus_vadjustment:
+ * @container: a #GtkContainer
+ * @adjustment: an adjustment which should be adjusted when the focus is moved among the
+ *   descendents of @container
+ * 
+ * Hooks up an adjustment to focus handling in a container, so when a child of the 
+ * container is focused, the adjustment is scrolled to show that widget. This function
+ * sets the vertical alignment. See gtk_scrolled_window_get_vadjustment() for a typical
+ * way of obtaining the adjustment and gtk_container_set_focus_hadjustment() for setting
+ * the horizontal adjustment.
+ *
+ * The adjustments have to be in pixel units and in the same coordinate system as the 
+ * allocation for immediate children of the container. 
+ */
 void
 gtk_container_set_focus_vadjustment (GtkContainer  *container,
                                     GtkAdjustment *adjustment)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
   if (adjustment)
     g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
 
   if (adjustment)
-    gtk_object_ref (GTK_OBJECT(adjustment));
+    g_object_ref (adjustment);
 
-  gtk_object_set_data_by_id_full (GTK_OBJECT (container),
-                                 vadjustment_key_id,
-                                 adjustment,
-                                 (GtkDestroyNotify) gtk_object_unref);
+  g_object_set_qdata_full (G_OBJECT (container),
+                          vadjustment_key_id,
+                          adjustment,
+                          g_object_unref);
 }
 
 /**
@@ -2054,28 +2250,41 @@ gtk_container_get_focus_vadjustment (GtkContainer *container)
     
   g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
 
-  vadjustment = gtk_object_get_data_by_id (GTK_OBJECT (container),
-                                          vadjustment_key_id);
+  vadjustment = g_object_get_qdata (G_OBJECT (container), vadjustment_key_id);
 
   return vadjustment;
 }
 
+/**
+ * gtk_container_set_focus_hadjustment:
+ * @container: a #GtkContainer
+ * @adjustment: an adjustment which should be adjusted when the focus is moved among the
+ *   descendents of @container
+ * 
+ * Hooks up an adjustment to focus handling in a container, so when a child of the 
+ * container is focused, the adjustment is scrolled to show that widget. This function
+ * sets the horizontal alignment. See gtk_scrolled_window_get_hadjustment() for a typical
+ * way of obtaining the adjustment and gtk_container_set_focus_vadjustment() for setting
+ * the vertical adjustment.
+ *
+ * The adjustments have to be in pixel units and in the same coordinate system as the 
+ * allocation for immediate children of the container. 
+ */
 void
 gtk_container_set_focus_hadjustment (GtkContainer  *container,
                                     GtkAdjustment *adjustment)
 {
-  g_return_if_fail (container != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (container));
   if (adjustment)
     g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
 
   if (adjustment)
-    gtk_object_ref (GTK_OBJECT (adjustment));
+    g_object_ref (adjustment);
 
-  gtk_object_set_data_by_id_full (GTK_OBJECT (container),
-                                 hadjustment_key_id,
-                                 adjustment,
-                                 (GtkDestroyNotify) gtk_object_unref);
+  g_object_set_qdata_full (G_OBJECT (container),
+                          hadjustment_key_id,
+                          adjustment,
+                          g_object_unref);
 }
 
 /**
@@ -2085,7 +2294,7 @@ gtk_container_set_focus_hadjustment (GtkContainer  *container,
  * Retrieves the horizontal focus adjustment for the container. See
  * gtk_container_set_focus_hadjustment ().
  *
- * Return value: the horizontal focus adjustment, or %NULL if none
+ * Return value: the horizontal focus adjustment, or %NULL if
  *   none has been set.
  **/
 GtkAdjustment *
@@ -2095,8 +2304,7 @@ gtk_container_get_focus_hadjustment (GtkContainer *container)
 
   g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
 
-  hadjustment = gtk_object_get_data_by_id (GTK_OBJECT (container),
-                                          hadjustment_key_id);
+  hadjustment = g_object_get_qdata (G_OBJECT (container), hadjustment_key_id);
 
   return hadjustment;
 }
@@ -2105,7 +2313,6 @@ gtk_container_get_focus_hadjustment (GtkContainer *container)
 static void
 gtk_container_show_all (GtkWidget *widget)
 {
-  g_return_if_fail (widget != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (widget));
 
   gtk_container_foreach (GTK_CONTAINER (widget),
@@ -2117,7 +2324,6 @@ gtk_container_show_all (GtkWidget *widget)
 static void
 gtk_container_hide_all (GtkWidget *widget)
 {
-  g_return_if_fail (widget != NULL);
   g_return_if_fail (GTK_IS_CONTAINER (widget));
 
   gtk_widget_hide (widget);
@@ -2150,7 +2356,6 @@ gtk_container_expose (GtkWidget      *widget,
     GdkEventExpose *event;
   } data;
 
-  g_return_val_if_fail (widget != NULL, FALSE);
   g_return_val_if_fail (GTK_IS_CONTAINER (widget), FALSE);
   g_return_val_if_fail (event != NULL, FALSE);
 
@@ -2165,7 +2370,7 @@ gtk_container_expose (GtkWidget      *widget,
                            &data);
     }   
   
-  return TRUE;
+  return FALSE;
 }
 
 static void
@@ -2210,26 +2415,26 @@ gtk_container_unmap (GtkWidget *widget)
  * @child: a child of @container
  * @event: a expose event sent to container
  *
- *  When a container receives an expose event, it must send synthetic
- * expose events to all children that don't have their own GdkWindows.
+ * When a container receives an expose event, it must send synthetic
+ * expose events to all children that don't have their own #GdkWindows.
  * This function provides a convenient way of doing this. A container,
- * when it receives an expose event, gtk_container_propagate_expose() 
+ * when it receives an expose event, calls gtk_container_propagate_expose() 
  * once for each child, passing in the event the container received.
  *
- * gtk_container_propagate expose() takes care of deciding whether
+ * gtk_container_propagate_expose() takes care of deciding whether
  * an expose event needs to be sent to the child, intersecting
  * the event's area with the child area, and sending the event.
  * 
  * In most cases, a container can simply either simply inherit the
- * ::expose implementation from GtkContainer, or, do some drawing 
- * and then chain to the ::expose implementation from GtkContainer.
+ * ::expose implementation from #GtkContainer, or, do some drawing 
+ * and then chain to the ::expose implementation from #GtkContainer.
  **/
 void
 gtk_container_propagate_expose (GtkContainer   *container,
                                GtkWidget      *child,
                                GdkEventExpose *event)
 {
-  GdkEventExpose child_event;
+  GdkEvent *child_event;
 
   g_return_if_fail (GTK_IS_CONTAINER (container));
   g_return_if_fail (GTK_IS_WIDGET (child));
@@ -2241,14 +2446,19 @@ gtk_container_propagate_expose (GtkContainer   *container,
       GTK_WIDGET_NO_WINDOW (child) &&
       (child->window == event->window))
     {
-      child_event = *event;
+      child_event = gdk_event_new (GDK_EXPOSE);
+      child_event->expose = *event;
+      g_object_ref (child_event->expose.window);
 
-      child_event.region = gtk_widget_region_intersect (child, event->region);
-      if (!gdk_region_empty (child_event.region))
+      child_event->expose.region = gtk_widget_region_intersect (child, event->region);
+      if (!gdk_region_empty (child_event->expose.region))
        {
-         gdk_region_get_clipbox (child_event.region, &child_event.area);
-         gtk_widget_send_expose (child, (GdkEvent *)&child_event);
+         gdk_region_get_clipbox (child_event->expose.region, &child_event->expose.area);
+         gtk_widget_send_expose (child, child_event);
        }
-      gdk_region_destroy (child_event.region);
+      gdk_event_free (child_event);
     }
 }
+
+#define __GTK_CONTAINER_C__
+#include "gtkaliasdef.c"