support multiple handles at same timewip/muktupavels/wnck-handle

12 files changed, 267 insertions, 132 deletions

diff --git a/libwnck/application.c b/libwnck/application.c
index dc1e1c0..60aa764 100644
--- a/libwnck/application.c
+++ b/libwnck/application.c
@@ -50,8 +50,6 @@
 
 #define FALLBACK_NAME _("Untitled application")
 
-static GHashTable *app_hash = NULL;
-
 struct _WnckApplicationPrivate
 {
   Window xwindow; /* group leader */
@@ -97,16 +95,6 @@ static void wnck_application_finalize    (GObject        *object);
 
 static guint signals[LAST_SIGNAL] = { 0 };
 
-void
-_wnck_application_shutdown_all (void)
-{
-  if (app_hash != NULL)
-    {
-      g_hash_table_destroy (app_hash);
-      app_hash = NULL;
-    }
-}
-
 static void
 wnck_application_init (WnckApplication *application)
 {
@@ -204,10 +192,7 @@ wnck_application_finalize (GObject *object)
 WnckApplication*
 wnck_application_get (gulong xwindow)
 {
-  if (app_hash == NULL)
-    return NULL;
-  else
-    return g_hash_table_lookup (app_hash, &xwindow);
+  return wnck_handle_get_application (_wnck_get_handle (), xwindow);
 }
 
 /**
@@ -518,15 +503,12 @@ WnckApplication*
 _wnck_application_create (Window      xwindow,
                           WnckScreen *screen)
 {
+  WnckHandle      *handle;
   WnckApplication *application;
   Screen          *xscreen;
 
-  if (app_hash == NULL)
-    app_hash = g_hash_table_new_full (_wnck_xid_hash, _wnck_xid_equal,
-                                      NULL, g_object_unref);
-
-  g_return_val_if_fail (g_hash_table_lookup (app_hash, &xwindow) == NULL,
-                        NULL);
+  handle = wnck_screen_get_handle (screen);
+  g_return_val_if_fail (wnck_handle_get_application (handle, xwindow) == NULL, NULL);
 
   xscreen = WNCK_SCREEN_XSCREEN (screen);
 
@@ -549,7 +531,7 @@ _wnck_application_create (Window      xwindow,
                                                            application->priv->xwindow,
                                                            _wnck_atom_get ("_NET_STARTUP_ID"));
 
-  g_hash_table_insert (app_hash, &application->priv->xwindow, application);
+  wnck_handle_insert_application (handle, &application->priv->xwindow, application);
 
   /* Hash now owns one ref, caller gets none */
 
@@ -567,15 +549,18 @@ _wnck_application_create (Window      xwindow,
 void
 _wnck_application_destroy (WnckApplication *application)
 {
+  WnckHandle *handle;
   Window xwindow = application->priv->xwindow;
 
-  g_return_if_fail (wnck_application_get (xwindow) == application);
+  handle = wnck_screen_get_handle (application->priv->screen);
+
+  g_return_if_fail (wnck_handle_get_application (handle, xwindow) == application);
 
-  g_hash_table_remove (app_hash, &xwindow);
+  wnck_handle_remove_application (handle, &xwindow);
 
   /* Removing from hash also removes the only ref WnckApplication had */
 
-  g_return_if_fail (wnck_application_get (xwindow) == NULL);
+  g_return_if_fail (wnck_handle_get_application (handle, xwindow) == NULL);
 }
 
 static void
diff --git a/libwnck/application.h b/libwnck/application.h
index 7966a81..40fe4c6 100644
--- a/libwnck/application.h
+++ b/libwnck/application.h
@@ -74,6 +74,7 @@ struct _WnckApplicationClass
 
 GType wnck_application_get_type (void) G_GNUC_CONST;
 
+G_DEPRECATED_FOR(wnck_handle_get_application)
 WnckApplication* wnck_application_get (gulong xwindow);
 
 gulong wnck_application_get_xid (WnckApplication *app);
diff --git a/libwnck/class-group.c b/libwnck/class-group.c
index 5a1aec2..41d7e9b 100644
--- a/libwnck/class-group.c
+++ b/libwnck/class-group.c
@@ -65,9 +65,6 @@ struct _WnckClassGroupPrivate {
 
 G_DEFINE_TYPE_WITH_PRIVATE (WnckClassGroup, wnck_class_group, G_TYPE_OBJECT);
 
-/* Hash table that maps res_class strings -> WnckClassGroup instances */
-static GHashTable *class_group_hash = NULL;
-
 static void wnck_class_group_finalize    (GObject             *object);
 
 enum {
@@ -78,16 +75,6 @@ enum {
 
 static guint signals[LAST_SIGNAL] = { 0 };
 
-void
-_wnck_class_group_shutdown_all (void)
-{
-  if (class_group_hash != NULL)
-    {
-      g_hash_table_destroy (class_group_hash);
-      class_group_hash = NULL;
-    }
-}
-
 static void
 wnck_class_group_class_init (WnckClassGroupClass *class)
 {
@@ -215,10 +202,7 @@ wnck_class_group_finalize (GObject *object)
 WnckClassGroup *
 wnck_class_group_get (const char *id)
 {
-  if (!class_group_hash)
-    return NULL;
-  else
-    return g_hash_table_lookup (class_group_hash, id ? id : "");
+  return wnck_handle_get_class_group (_wnck_get_handle (), id);
 }
 
 /**
@@ -237,22 +221,18 @@ WnckClassGroup *
 _wnck_class_group_create (WnckScreen *screen,
                           const char *res_class)
 {
+  WnckHandle *handle;
   WnckClassGroup *class_group;
 
-  if (class_group_hash == NULL)
-    class_group_hash = g_hash_table_new_full (g_str_hash, g_str_equal,
-                                              NULL, g_object_unref);
-
-  g_return_val_if_fail (g_hash_table_lookup (class_group_hash, res_class ? res_class : "") == NULL,
-			NULL);
+  handle = wnck_screen_get_handle (screen);
+  g_return_val_if_fail (wnck_handle_get_class_group (handle, res_class) == NULL, NULL);
 
   class_group = g_object_new (WNCK_TYPE_CLASS_GROUP, NULL);
   class_group->priv->screen = screen;
 
   class_group->priv->res_class = g_strdup (res_class ? res_class : "");
 
-  g_hash_table_insert (class_group_hash,
-                       class_group->priv->res_class, class_group);
+  wnck_handle_insert_class_group (handle, class_group->priv->res_class, class_group);
   /* Hash now owns one ref, caller gets none */
 
   return class_group;
@@ -267,9 +247,12 @@ _wnck_class_group_create (WnckScreen *screen,
 void
 _wnck_class_group_destroy (WnckClassGroup *class_group)
 {
+  WnckHandle *handle;
+
   g_return_if_fail (WNCK_IS_CLASS_GROUP (class_group));
 
-  g_hash_table_remove (class_group_hash, class_group->priv->res_class);
+  handle = wnck_screen_get_handle (class_group->priv->screen);
+  wnck_handle_remove_class_group (handle, class_group->priv->res_class);
 
   /* Removing from hash also removes the only ref WnckClassGroup had */
 }
diff --git a/libwnck/class-group.h b/libwnck/class-group.h
index ce084c3..581cd22 100644
--- a/libwnck/class-group.h
+++ b/libwnck/class-group.h
@@ -72,6 +72,7 @@ struct _WnckClassGroupClass
 
 GType wnck_class_group_get_type (void) G_GNUC_CONST;
 
+G_DEPRECATED_FOR(wnck_handle_get_class_group)
 WnckClassGroup *wnck_class_group_get (const char *id);
 
 GList *wnck_class_group_get_windows (WnckClassGroup *class_group);
diff --git a/libwnck/private.h b/libwnck/private.h
index 887455b..3c03658 100644
--- a/libwnck/private.h
+++ b/libwnck/private.h
@@ -65,8 +65,6 @@ const char* _wnck_window_get_startup_id (WnckWindow *window);
 time_t      _wnck_window_get_needs_attention_time (WnckWindow *window);
 time_t      _wnck_window_or_transient_get_needs_attention_time (WnckWindow *window);
 
-void        _wnck_window_shutdown_all (void);
-
 WnckWorkspace* _wnck_workspace_create  (int            number, 
                                         WnckScreen    *screen);
 void           _wnck_workspace_destroy (WnckWorkspace *space);
@@ -91,7 +89,6 @@ WnckApplication* _wnck_application_create  (Window           xwindow,
                                             WnckScreen      *screen);
 void             _wnck_application_destroy (WnckApplication *app);
 void             _wnck_application_load_icons (WnckApplication *app);
-void             _wnck_application_shutdown_all (void);
 
 WnckClassGroup  *_wnck_class_group_create        (WnckScreen     *screen,
                                                   const char     *res_class);
@@ -100,7 +97,6 @@ void             _wnck_class_group_add_window    (WnckClassGroup *class_group,
                                                   WnckWindow     *window);
 void             _wnck_class_group_remove_window (WnckClassGroup *class_group,
                                                   WnckWindow     *window);
-void             _wnck_class_group_shutdown_all  (void);
 
 void _wnck_workspace_update_name (WnckWorkspace *workspace,
                                   const char    *name);
diff --git a/libwnck/screen.c b/libwnck/screen.c
index f12e065..ce78cc6 100644
--- a/libwnck/screen.c
+++ b/libwnck/screen.c
@@ -1412,7 +1412,7 @@ update_client_list (WnckScreen *screen)
     {
       WnckWindow *window;
 
-      window = wnck_window_get (mapping[i]);
+      window = wnck_handle_get_window (screen->priv->handle, mapping[i]);
 
       if (window == NULL)
         {
@@ -1431,7 +1431,7 @@ update_client_list (WnckScreen *screen)
 
           leader = wnck_window_get_group_leader (window);
 
-          app = wnck_application_get (leader);
+          app = wnck_handle_get_application (screen->priv->handle, leader);
           if (app == NULL)
             {
               app = _wnck_application_create (leader, screen);
@@ -1444,7 +1444,7 @@ update_client_list (WnckScreen *screen)
 
 	  res_class = wnck_window_get_class_group_name (window);
 
-	  class_group = wnck_class_group_get (res_class);
+	  class_group = wnck_handle_get_class_group (screen->priv->handle, res_class);
 	  if (class_group == NULL)
 	    {
 	      class_group = _wnck_class_group_create (screen, res_class);
@@ -1508,7 +1508,7 @@ update_client_list (WnckScreen *screen)
     {
       WnckWindow *window;
 
-      window = wnck_window_get (stack[i]);
+      window = wnck_handle_get_window (screen->priv->handle, stack[i]);
 
       g_assert (window != NULL);
 
@@ -1922,7 +1922,7 @@ update_active_window (WnckScreen *screen)
                     _wnck_atom_get ("_NET_ACTIVE_WINDOW"),
                     &xwindow);
 
-  window = wnck_window_get (xwindow);
+  window = wnck_handle_get_window (screen->priv->handle, xwindow);
 
   if (window == screen->priv->active_window)
     return;
diff --git a/libwnck/window.c b/libwnck/window.c
index 3098339..85a8745 100644
--- a/libwnck/window.c
+++ b/libwnck/window.c
@@ -49,8 +49,6 @@
 #define FALLBACK_NAME _("Untitled window")
 #define ALL_WORKSPACES ((int) 0xFFFFFFFF)
 
-static GHashTable *window_hash = NULL;
-
 /* Keep 0-7 in sync with the numbers in the WindowState enum. Yeah I'm
  * a loser.
  */
@@ -220,16 +218,6 @@ static WnckWindow* find_last_transient_for (GList *windows,
 
 static guint signals[LAST_SIGNAL] = { 0 };
 
-void
-_wnck_window_shutdown_all (void)
-{
-  if (window_hash != NULL)
-    {
-      g_hash_table_destroy (window_hash);
-      window_hash = NULL;
-    }
-}
-
 static void
 wnck_window_init (WnckWindow *window)
 {
@@ -461,10 +449,7 @@ wnck_window_finalize (GObject *object)
 WnckWindow*
 wnck_window_get (gulong xwindow)
 {
-  if (window_hash == NULL)
-    return NULL;
-  else
-    return g_hash_table_lookup (window_hash, &xwindow);
+  return wnck_handle_get_window (_wnck_get_handle (), xwindow);
 }
 
 /**
@@ -489,15 +474,12 @@ _wnck_window_create (Window      xwindow,
                      WnckScreen *screen,
                      gint        sort_order)
 {
+  WnckHandle *handle;
   WnckWindow *window;
   Screen     *xscreen;
 
-  if (window_hash == NULL)
-    window_hash = g_hash_table_new_full (_wnck_xid_hash, _wnck_xid_equal,
-                                         NULL, g_object_unref);
-
-  g_return_val_if_fail (g_hash_table_lookup (window_hash, &xwindow) == NULL,
-                        NULL);
+  handle = wnck_screen_get_handle (screen);
+  g_return_val_if_fail (wnck_handle_get_window (handle, xwindow) == NULL, NULL);
 
   xscreen = WNCK_SCREEN_XSCREEN (screen);
 
@@ -505,7 +487,7 @@ _wnck_window_create (Window      xwindow,
   window->priv->xwindow = xwindow;
   window->priv->screen = screen;
 
-  g_hash_table_insert (window_hash, &window->priv->xwindow, window);
+  wnck_handle_insert_window (handle, &window->priv->xwindow, window);
 
   /* Hash now owns one ref, caller gets none */
 
@@ -568,17 +550,20 @@ _wnck_window_create (Window      xwindow,
 void
 _wnck_window_destroy (WnckWindow *window)
 {
+  WnckHandle *handle;
   Window xwindow = window->priv->xwindow;
 
   g_return_if_fail (WNCK_IS_WINDOW (window));
 
-  g_return_if_fail (wnck_window_get (xwindow) == window);
+  handle = wnck_screen_get_handle (window->priv->screen);
 
-  g_hash_table_remove (window_hash, &xwindow);
+  g_return_if_fail (wnck_handle_get_window (handle, xwindow) == window);
+
+  wnck_handle_remove_window (handle, &xwindow);
 
   /* Removing from hash also removes the only ref WnckWindow had */
 
-  g_return_if_fail (wnck_window_get (xwindow) == NULL);
+  g_return_if_fail (wnck_handle_get_window (handle, xwindow) == NULL);
 }
 
 static Display *
@@ -754,9 +739,13 @@ wnck_window_get_application  (WnckWindow *window)
 WnckWindow*
 wnck_window_get_transient (WnckWindow *window)
 {
+  WnckHandle *handle;
+
   g_return_val_if_fail (WNCK_IS_WINDOW (window), NULL);
 
-  return wnck_window_get (window->priv->transient_for);
+  handle = wnck_screen_get_handle (window->priv->screen);
+
+  return wnck_handle_get_window (handle, window->priv->transient_for);
 }
 
 /**
@@ -1175,11 +1164,13 @@ _wnck_window_get_startup_id (WnckWindow *window)
   if (window->priv->startup_id == NULL &&
       window->priv->group_leader != None)
     {
+      WnckHandle *handle;
       WnckApplication *app;
 
       /* Fall back to group leader property */
 
-      app = wnck_application_get (window->priv->group_leader);
+      handle = wnck_screen_get_handle (window->priv->screen);
+      app = wnck_handle_get_application (handle, window->priv->group_leader);
 
       if (app != NULL)
         return wnck_application_get_startup_id (app);
diff --git a/libwnck/window.h b/libwnck/window.h
index 72545aa..47c6543 100644
--- a/libwnck/window.h
+++ b/libwnck/window.h
@@ -288,6 +288,7 @@ struct _WnckWindowClass
 
 GType wnck_window_get_type (void) G_GNUC_CONST;
 
+G_DEPRECATED_FOR(wnck_handle_get_window)
 WnckWindow* wnck_window_get (gulong xwindow);
 
 WnckScreen* wnck_window_get_screen    (WnckWindow *window);
diff --git a/libwnck/wnck-handle-private.h b/libwnck/wnck-handle-private.h
index c791560..31c4b01 100644
--- a/libwnck/wnck-handle-private.h
+++ b/libwnck/wnck-handle-private.h
@@ -32,6 +32,29 @@ gsize           _wnck_handle_get_default_icon_size      (WnckHandle *self);
 
 gsize           _wnck_handle_get_default_mini_icon_size (WnckHandle *self);
 
+void            wnck_handle_insert_class_group         (WnckHandle      *self,
+                                                        const char      *id,
+                                                        WnckClassGroup  *class_group);
+
+
+void            wnck_handle_remove_class_group         (WnckHandle      *self,
+                                                        const char      *id);
+
+void            wnck_handle_insert_application         (WnckHandle      *self,
+                                                        gpointer         xwindow,
+                                                        WnckApplication *app);
+
+
+void            wnck_handle_remove_application         (WnckHandle      *self,
+                                                        gpointer         xwindow);
+
+void            wnck_handle_insert_window              (WnckHandle      *self,
+                                                        gpointer         xwindow,
+                                                        WnckWindow      *window);
+
+void            wnck_handle_remove_window              (WnckHandle      *self,
+                                                        gpointer         xwindow);
+
 G_END_DECLS
 
 #endif
diff --git a/libwnck/wnck-handle.c b/libwnck/wnck-handle.c
index 9a7f565..16a0b83 100644
--- a/libwnck/wnck-handle.c
+++ b/libwnck/wnck-handle.c
@@ -70,6 +70,10 @@ struct _WnckHandle
   gsize              default_icon_size;
   gsize              default_mini_icon_size;
 
+  GHashTable        *class_group_hash;
+  GHashTable        *app_hash;
+  GHashTable        *window_hash;
+
   xresclient_state   xres_state;
   guint              xres_idleid;
   GHashTable        *xres_hashtable;
@@ -467,8 +471,8 @@ filter_func (GdkXEvent *gdkxevent,
             WnckWindow *window;
             WnckApplication *app;
 
-            window = wnck_window_get (xevent->xany.window);
-            app = wnck_application_get (xevent->xany.window);
+            window = wnck_handle_get_window (self, xevent->xany.window);
+            app = wnck_handle_get_application (self, xevent->xany.window);
 
             if (app)
               _wnck_application_process_property_notify (app, xevent);
@@ -483,7 +487,7 @@ filter_func (GdkXEvent *gdkxevent,
       {
         WnckWindow *window;
 
-        window = wnck_window_get (xevent->xconfigure.window);
+        window = wnck_handle_get_window (self, xevent->xconfigure.window);
 
         if (window)
           _wnck_window_process_configure_notify (window, xevent);
@@ -548,9 +552,23 @@ wnck_handle_finalize (GObject *object)
    * actually be done before shutting down global WnckWindow structures
    * (because the WnckScreen has a list of WnckWindow that will get mis-used
    * otherwise). */
-  _wnck_class_group_shutdown_all ();
-  _wnck_application_shutdown_all ();
-  _wnck_window_shutdown_all ();
+  if (self->class_group_hash != NULL)
+    {
+      g_hash_table_destroy (self->class_group_hash);
+      self->class_group_hash = NULL;
+    }
+
+  if (self->app_hash != NULL)
+    {
+      g_hash_table_destroy (self->app_hash);
+      self->app_hash = NULL;
+    }
+
+  if (self->window_hash != NULL)
+    {
+      g_hash_table_destroy (self->window_hash);
+      self->window_hash = NULL;
+    }
 
   if (self->screens != NULL)
     {
@@ -657,6 +675,15 @@ wnck_handle_init (WnckHandle *self)
   self->default_icon_size = WNCK_DEFAULT_ICON_SIZE;
   self->default_mini_icon_size = WNCK_DEFAULT_MINI_ICON_SIZE;
 
+  self->class_group_hash = g_hash_table_new_full (g_str_hash, g_str_equal,
+                                                  NULL, g_object_unref);
+
+  self->app_hash = g_hash_table_new_full (_wnck_xid_hash, _wnck_xid_equal,
+                                          NULL, g_object_unref);
+
+  self->window_hash = g_hash_table_new_full (_wnck_xid_hash, _wnck_xid_equal,
+                                             NULL, g_object_unref);
+
   self->xres_state = (xresclient_state) { self, NULL, 0, -1, NULL, NULL };
 
   gdk_window_add_filter (NULL, filter_func, self);
@@ -1028,3 +1055,114 @@ wnck_handle_read_resource_usage_pid (WnckHandle        *self,
     wnck_pid_read_resource_usage_no_cache (self, gdk_display, pid, usage);
 #endif /* HAVE_XRES */
 }
+
+void
+wnck_handle_insert_class_group (WnckHandle     *self,
+                                const char     *id,
+                                WnckClassGroup *class_group)
+{
+  g_return_if_fail (id != NULL);
+
+  g_hash_table_insert (self->class_group_hash, (gpointer) id, class_group);
+}
+
+void
+wnck_handle_remove_class_group (WnckHandle *self,
+                                const char *id)
+{
+  g_hash_table_remove (self->class_group_hash, id);
+}
+
+/**
+ * wnck_handle_get_class_group:
+ * @self: a #WnckHandle
+ * @id: identifier name of the sought resource class.
+ *
+ * Gets the #WnckClassGroup corresponding to @id.
+ *
+ * Returns: (transfer none): the #WnckClassGroup corresponding to
+ * @id, or %NULL if there is no #WnckClassGroup with the specified
+ * @id. The returned #WnckClassGroup is owned by libwnck and must not be
+ * referenced or unreferenced.
+ */
+WnckClassGroup *
+wnck_handle_get_class_group (WnckHandle *self,
+                             const char *id)
+{
+  g_return_val_if_fail (WNCK_IS_HANDLE (self), NULL);
+
+  return g_hash_table_lookup (self->class_group_hash, id ? id : "");
+}
+
+void
+wnck_handle_insert_application (WnckHandle      *self,
+                                gpointer         xwindow,
+                                WnckApplication *app)
+{
+  g_hash_table_insert (self->app_hash, xwindow, app);
+}
+
+void
+wnck_handle_remove_application (WnckHandle *self,
+                                gpointer    xwindow)
+{
+  g_hash_table_remove (self->app_hash, xwindow);
+}
+
+/**
+ * wnck_handle_get_application:
+ * @self: a #WnckHandle
+ * @xwindow: the X window ID of a group leader.
+ *
+ * Gets the #WnckApplication corresponding to the group leader with @xwindow
+ * as X window ID.
+ *
+ * Returns: (transfer none): the #WnckApplication corresponding to
+ * @xwindow, or %NULL if there no such #WnckApplication could be found. The
+ * returned #WnckApplication is owned by libwnck and must not be referenced or
+ * unreferenced.
+ */
+WnckApplication *
+wnck_handle_get_application (WnckHandle *self,
+                             gulong      xwindow)
+{
+  g_return_val_if_fail (WNCK_IS_HANDLE (self), NULL);
+
+  return g_hash_table_lookup (self->app_hash, &xwindow);
+}
+
+void
+wnck_handle_insert_window (WnckHandle *self,
+                           gpointer    xwindow,
+                           WnckWindow *window)
+{
+  g_hash_table_insert (self->window_hash, xwindow, window);
+}
+
+void
+wnck_handle_remove_window (WnckHandle *self,
+                           gpointer    xwindow)
+{
+  g_hash_table_remove (self->window_hash, xwindow);
+}
+
+/**
+ * wnck_handle_get_window:
+ * @self: a #WnckHandle
+ * @xwindow: an X window ID.
+ *
+ * Gets a preexisting #WnckWindow for the X window @xwindow. This will not
+ * create a #WnckWindow if none exists. The function is robust against bogus
+ * window IDs.
+ *
+ * Returns: (transfer none): the #WnckWindow for @xwindow. The returned
+ * #WnckWindow is owned by libwnck and must not be referenced or unreferenced.
+ */
+WnckWindow *
+wnck_handle_get_window (WnckHandle *self,
+                        gulong      xwindow)
+{
+  g_return_val_if_fail (WNCK_IS_HANDLE (self), NULL);
+
+  return g_hash_table_lookup (self->window_hash, &xwindow);
+}
diff --git a/libwnck/wnck-handle.h b/libwnck/wnck-handle.h
index 0c76ab1..5183b2a 100644
--- a/libwnck/wnck-handle.h
+++ b/libwnck/wnck-handle.h
@@ -31,31 +31,40 @@ G_BEGIN_DECLS
 #define WNCK_TYPE_HANDLE (wnck_handle_get_type ())
 G_DECLARE_FINAL_TYPE (WnckHandle, wnck_handle, WNCK, HANDLE, GObject)
 
-WnckHandle *wnck_handle_new                        (WnckClientType     client_type);
+WnckHandle      *wnck_handle_new                        (WnckClientType     client_type);
 
-WnckScreen *wnck_handle_get_default_screen         (WnckHandle        *self);
+WnckScreen      *wnck_handle_get_default_screen         (WnckHandle        *self);
 
-WnckScreen *wnck_handle_get_screen                 (WnckHandle        *self,
-                                                    int                index);
+WnckScreen      *wnck_handle_get_screen                 (WnckHandle        *self,
+                                                         int                index);
 
-WnckScreen *wnck_handle_get_screen_for_root        (WnckHandle        *self,
-                                                    gulong             root_window_id);
+WnckScreen      *wnck_handle_get_screen_for_root        (WnckHandle        *self,
+                                                         gulong             root_window_id);
 
-void        wnck_handle_set_default_icon_size      (WnckHandle        *self,
-                                                    gsize              icon_size);
+void             wnck_handle_set_default_icon_size      (WnckHandle        *self,
+                                                         gsize              icon_size);
 
-void        wnck_handle_set_default_mini_icon_size (WnckHandle        *self,
-                                                    gsize              icon_size);
+void             wnck_handle_set_default_mini_icon_size (WnckHandle        *self,
+                                                         gsize              icon_size);
 
-void        wnck_handle_read_resource_usage_xid    (WnckHandle        *self,
-                                                    GdkDisplay        *gdk_display,
-                                                    gulong             xid,
-                                                    WnckResourceUsage *usage);
+void             wnck_handle_read_resource_usage_xid    (WnckHandle        *self,
+                                                         GdkDisplay        *gdk_display,
+                                                         gulong             xid,
+                                                         WnckResourceUsage *usage);
 
-void        wnck_handle_read_resource_usage_pid    (WnckHandle        *self,
-                                                    GdkDisplay        *gdk_display,
-                                                    gulong             pid,
-                                                    WnckResourceUsage *usage);
+void             wnck_handle_read_resource_usage_pid    (WnckHandle        *self,
+                                                         GdkDisplay        *gdk_display,
+                                                         gulong             pid,
+                                                         WnckResourceUsage *usage);
+
+WnckClassGroup  *wnck_handle_get_class_group            (WnckHandle        *self,
+                                                         const char        *id);
+
+WnckApplication *wnck_handle_get_application            (WnckHandle        *self,
+                                                         gulong             xwindow);
+
+WnckWindow      *wnck_handle_get_window                 (WnckHandle        *self,
+                                                         gulong             xwindow);
 
 G_END_DECLS
 
diff --git a/libwnck/wnckprop.c b/libwnck/wnckprop.c
index fa4844a..a6622b5 100644
--- a/libwnck/wnckprop.c
+++ b/libwnck/wnckprop.c
@@ -291,7 +291,7 @@ static GOptionEntry space_entries[] = {
 	{ NULL }
 };
 
-static void clean_up (void);
+static void clean_up (WnckHandle *handle);
 
 /* this part is mostly stolen from xutils.c */
 typedef struct
@@ -1708,8 +1708,9 @@ wm_state_set (Display *display,
 }
 
 static WnckWindow *
-find_managed_window (Display *display,
-                     Window   window)
+find_managed_window (WnckHandle *handle,
+                     Display    *display,
+                     Window      window)
 {
   GdkDisplay *gdk_display;
   Window      root;
@@ -1720,7 +1721,7 @@ find_managed_window (Display *display,
   int         result;
 
   if (wm_state_set (display, window))
-    return wnck_window_get (window);
+    return wnck_handle_get_window (handle, window);
 
   gdk_display = gdk_x11_lookup_xdisplay (display);
   g_assert (gdk_display != NULL);
@@ -1736,11 +1737,11 @@ find_managed_window (Display *display,
     {
       if (wm_state_set (display, kids [i]))
         {
-          retval = wnck_window_get (kids [i]);
+          retval = wnck_handle_get_window (handle, kids [i]);
           break;
         }
 
-      retval = find_managed_window (display, kids [i]);
+      retval = find_managed_window (handle, display, kids [i]);
       if (retval != NULL)
         break;
     }
@@ -1752,12 +1753,14 @@ find_managed_window (Display *display,
 }
 
 static void
-handle_button_press_event (Display *dpy, XIDeviceEvent *event)
+handle_button_press_event (WnckHandle    *handle,
+                           Display       *dpy,
+                           XIDeviceEvent *event)
 {
   if (event->child == None)
     return;
 
-  got_from_user = find_managed_window (dpy, event->child);
+  got_from_user = find_managed_window (handle, dpy, event->child);
 }
 
 static GdkFilterReturn
@@ -1765,6 +1768,7 @@ target_filter (GdkXEvent *gdk_xevent,
                GdkEvent  *gdk_event,
                gpointer   data)
 {
+  WnckHandle *handle = data;
   XEvent *xevent = (XEvent *) gdk_xevent;
   XGenericEventCookie *cookie = &xevent->xcookie;
 
@@ -1779,13 +1783,13 @@ target_filter (GdkXEvent *gdk_xevent,
       switch (event->evtype)
         {
           case XI_ButtonPress:
-            handle_button_press_event (cookie->display, event);
-            clean_up ();
+            handle_button_press_event (handle, cookie->display, event);
+            clean_up (handle);
             return GDK_FILTER_REMOVE;
           case XI_KeyPress:
             if (event->detail == XKeysymToKeycode (cookie->display, XK_Escape))
               {
-                clean_up ();
+                clean_up (handle);
                 return GDK_FILTER_REMOVE;
               }
             break;
@@ -1808,6 +1812,7 @@ prepare (GdkSeat   *seat,
 static gboolean
 get_target (gpointer data)
 {
+  WnckHandle *handle;
   GdkWindow *root;
   GdkDisplay *display;
   GdkSeat *seat;
@@ -1815,13 +1820,15 @@ get_target (gpointer data)
   GdkSeatCapabilities caps;
   GdkGrabStatus status;
 
+  handle = data;
+
   root = gdk_get_default_root_window ();
   display = gdk_display_get_default ();
   seat = gdk_display_get_default_seat (display);
   cross = gdk_cursor_new_for_display (display, GDK_CROSS);
   caps = GDK_SEAT_CAPABILITY_POINTER | GDK_SEAT_CAPABILITY_KEYBOARD;
 
-  gdk_window_add_filter (root, (GdkFilterFunc) target_filter, NULL);
+  gdk_window_add_filter (root, (GdkFilterFunc) target_filter, handle);
 
   status = gdk_seat_grab (seat, root, caps, TRUE, cross, NULL, prepare, NULL);
   g_object_unref (cross);
@@ -1829,7 +1836,7 @@ get_target (gpointer data)
   if (status != GDK_GRAB_SUCCESS)
     {
       g_warning ("Seat grab failed.");
-      clean_up ();
+      clean_up (handle);
       return FALSE;
     }
 
@@ -1839,7 +1846,7 @@ get_target (gpointer data)
 }
 
 static void
-clean_up (void)
+clean_up (WnckHandle *handle)
 {
   GdkWindow *root;
   GdkDisplay *display;
@@ -1849,7 +1856,7 @@ clean_up (void)
   display = gdk_display_get_default ();
   seat = gdk_display_get_default_seat (display);
 
-  gdk_window_remove_filter (root, (GdkFilterFunc) target_filter, NULL);
+  gdk_window_remove_filter (root, (GdkFilterFunc) target_filter, handle);
   gdk_seat_ungrab (seat);
 
   gtk_main_quit ();
@@ -1966,7 +1973,7 @@ main (int argc, char **argv)
 
   if (get_from_user)
     {
-      g_idle_add (get_target, NULL);
+      g_idle_add (get_target, handle);
 
       gtk_main ();
 
@@ -2014,7 +2021,7 @@ main (int argc, char **argv)
       if (got_from_user)
         class_group = wnck_window_get_class_group (got_from_user);
       else
-        class_group = wnck_class_group_get (interact_class_group);
+        class_group = wnck_handle_get_class_group (handle, interact_class_group);
 
       if (class_group)
         {
@@ -2039,7 +2046,7 @@ main (int argc, char **argv)
       if (got_from_user)
         app = wnck_window_get_application (got_from_user);
       else
-        app = wnck_application_get (interact_app_xid);
+        app = wnck_handle_get_application (handle, interact_app_xid);
 
       if (app)
         {
@@ -2062,7 +2069,7 @@ main (int argc, char **argv)
       if (got_from_user)
         window = got_from_user;
       else
-        window = wnck_window_get (xid);
+        window = wnck_handle_get_window (handle, xid);
 
       if (window)
         {