diff -r 9a5f47fbc5c3 -r 458831c574f4 ui/gtk/container.c
--- a/ui/gtk/container.c	Sat Apr 12 13:44:53 2014 +0200
+++ b/ui/gtk/container.c	Sat May 10 15:43:22 2014 +0200
@@ -31,6 +31,8 @@
 
 #include "container.h"
 #include "../common/context.h"
+#include "../common/object.h"
+
 
 UiContainer* ui_frame_container(UiObject *obj, GtkWidget *frame) {
     UiContainer *ct = ucx_mempool_malloc(
@@ -44,3 +46,58 @@
 void ui_frame_container_add(UiContainer *ct, GtkWidget *widget) {
     gtk_container_add(GTK_CONTAINER(ct->widget), widget);
 }
+
+
+UIWIDGET ui_sidebar(UiObject *obj) {
+#ifdef UI_GTK3
+    GtkWidget *paned = gtk_paned_new(GTK_ORIENTATION_HORIZONTAL);
+#else
+    GtkWidget *paned = gtk_hpaned_new();
+#endif
+    gtk_paned_set_position(GTK_PANED(paned), 200);
+    
+    GtkWidget *sidebar;
+#ifdef UI_GTK3
+    sidebar = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+#else
+    sidebar = gtk_vbox_new(FALSE, 0);
+#endif
+    gtk_paned_pack1(GTK_PANED(paned), sidebar, TRUE, FALSE);
+    
+    UiObject *left = uic_object_new(obj, sidebar);
+    UiContainer *ct1 = ucx_mempool_malloc(
+            obj->ctx->mempool,
+            sizeof(UiContainer));
+    ct1->widget = sidebar;
+    ct1->add = ui_box_add;
+    left->container = ct1;
+    
+    UiObject *right = uic_object_new(obj, sidebar);
+    UiContainer *ct2 = ucx_mempool_malloc(
+            obj->ctx->mempool,
+            sizeof(UiContainer));
+    ct2->widget = paned;
+    ct2->add = ui_split_container_add2;
+    right->container = ct2;
+    
+    UiContainer *ct = uic_get_current_container(obj);
+    ct->add(ct, paned);
+    
+    uic_obj_add(obj, right);
+    uic_obj_add(obj, left);
+    
+    return sidebar;
+}
+
+void ui_split_container_add1(UiContainer *ct, GtkWidget *widget) {
+    gtk_paned_pack1(GTK_PANED(ct->widget), widget, TRUE, FALSE);
+}
+
+void ui_split_container_add2(UiContainer *ct, GtkWidget *widget) {
+    gtk_paned_pack2(GTK_PANED(ct->widget), widget, TRUE, FALSE);
+}
+
+
+void ui_box_add(UiContainer *ct, GtkWidget *widget) {
+    gtk_box_pack_start(GTK_BOX(ct->widget), widget, TRUE, TRUE, 0);
+}