diff -r 42506e19eb6b -r 25e5390cce41 ui/motif/container.c
--- a/ui/motif/container.c	Fri Jun 13 10:39:54 2014 +0200
+++ b/ui/motif/container.c	Tue Jul 22 09:51:17 2014 +0200
@@ -81,3 +81,143 @@
     
     return sidebar;
 }
+
+UiTabbedPane* ui_tabbed_document_view(UiObject *obj) {
+    int n = 0;
+    Arg args[16];
+    
+    UiContainer *ct = uic_get_current_container(obj);
+    Widget parent = ct->add(ct, args, &n);
+    
+    Widget tabview = XmCreateForm(parent, "tabview_form", args, n);
+    XtManageChild(tabview);
+    
+    XtSetArg(args[0], XmNorientation, XmHORIZONTAL);
+    XtSetArg(args[1], XmNpacking, XmPACK_TIGHT);
+    XtSetArg(args[2], XmNspacing, 1);
+    XtSetArg(args[3], XmNleftAttachment, XmATTACH_FORM);
+    XtSetArg(args[4], XmNrightAttachment, XmATTACH_FORM);
+    XtSetArg(args[5], XmNtopAttachment, XmATTACH_FORM);
+    Widget tabbar = XmCreateRowColumn(tabview, "toolbar", args, 6);
+    XtManageChild(tabbar);
+    
+    XtSetArg(args[0], XmNleftAttachment, XmATTACH_FORM);
+    XtSetArg(args[1], XmNrightAttachment, XmATTACH_FORM);
+    XtSetArg(args[2], XmNtopAttachment, XmATTACH_WIDGET);
+    XtSetArg(args[3], XmNtopWidget, tabbar);
+    XtSetArg(args[4], XmNbottomAttachment, XmATTACH_FORM);
+    XtSetArg(args[5], XmNshadowThickness, 0);
+    Widget tabct = XmCreateForm(tabview, "tabview", args, 6);
+    XtManageChild(tabct);
+    
+    MotifTabbedPane *tabbedpane = ui_malloc(obj->ctx, sizeof(MotifTabbedPane));
+    tabbedpane->view.ctx = uic_current_obj(obj)->ctx;
+    tabbedpane->view.widget = tabct;
+    tabbedpane->view.document = NULL;
+    tabbedpane->tabbar = tabbar;
+    //tabbedpane->form = tabview;
+    tabbedpane->tabs = NULL;
+    tabbedpane->current = NULL;
+    
+    return &tabbedpane->view;
+}
+
+UiObject* ui_document_tab(UiTabbedPane *view) {
+    MotifTabbedPane *v = (MotifTabbedPane*)view;
+    int n = 0;
+    Arg args[16];
+    
+    // hide the current tab content
+    if(v->current) {
+        XtUnmanageChild(v->current->content->widget);
+    }
+    
+    UiTab *tab = ui_malloc(view->ctx, sizeof(UiTab));
+    
+    // create the new tab content
+    XtSetArg(args[0], XmNshadowThickness, 0);
+    XtSetArg(args[1], XmNleftAttachment, XmATTACH_FORM);
+    XtSetArg(args[2], XmNrightAttachment, XmATTACH_FORM);
+    XtSetArg(args[3], XmNtopAttachment, XmATTACH_FORM);
+    XtSetArg(args[4], XmNbottomAttachment, XmATTACH_FORM);
+    XtSetArg(args[5], XmNuserData, tab);
+    Widget frame = XmCreateFrame(view->widget, "tab", args, 6);
+    XtManageChild(frame);
+    
+    UiObject *content = ui_malloc(view->ctx, sizeof(UiObject));
+    content->widget = NULL; // initialization for uic_context()
+    content->ctx = uic_context(content, view->ctx->mempool);
+    content->ctx->parent = view->ctx;
+    content->ctx->set_document = ui_tab_set_document;
+    content->ctx->detach_document = ui_tab_detach_document;
+    content->widget = frame;
+    content->window = view->ctx->obj->window;
+    content->container = ui_frame_container(content, frame);
+    content->next = NULL;
+    
+    // add tab button 
+    XmString label = XmStringCreateLocalized("tab");
+    XtSetArg(args[0], XmNlabelString, label);
+    XtSetArg(args[1], XmNshadowThickness, 1);
+    XtSetArg(args[2], XmNtraversalOn, FALSE);
+    Widget button = XmCreatePushButton(v->tabbar, "tab_button", args, 3);
+    XtManageChild(button);
+    XtAddCallback(
+        button,
+        XmNactivateCallback,
+        (XtCallbackProc)ui_tab_button_callback,
+        tab);
+    
+    tab->tabbedpane = v;
+    tab->content = content;
+    tab->tab_button = button;
+    
+    v->tabs = ucx_list_append_a(view->ctx->mempool->allocator, v->tabs, tab);
+    v->current = tab;
+    ui_change_tab(v, tab);
+    
+    return content;
+}
+
+void ui_tab_button_callback(Widget widget, UiTab *tab, XtPointer d) {
+    MotifTabbedPane *t = tab->tabbedpane;
+    if(t->current) {
+        XtUnmanageChild(t->current->content->widget);
+    }
+    XtManageChild(tab->content->widget);
+    
+    t->current = tab;
+    ui_change_tab(t, tab);
+}
+
+void ui_change_tab(MotifTabbedPane *pane, UiTab *tab) {
+    UiContext *ctx = tab->content->ctx;
+    ctx->parent->set_document(ctx->parent, ctx->document);
+}
+
+void ui_tab_set_document(UiContext *ctx, void *document) {
+    if(ctx->parent->document) {
+        //ctx->parent->detach_document(ctx->parent, ctx->parent->document);
+    }
+    uic_context_set_document(ctx, document);
+    //uic_context_set_document(ctx->parent, document);
+    //ctx->parent->document = document;
+    
+    UiTab *tab = NULL;
+    XtVaGetValues(
+            ctx->obj->widget,
+            XmNuserData,
+            &tab,
+            NULL);
+    if(tab) {
+        if(tab->tabbedpane->current == tab) {
+            ctx->parent->set_document(ctx->parent, ctx->document);
+        }
+    } else {
+        fprintf(stderr, "UiError: ui_bar_set_document: Cannot set document");
+    }
+}
+
+void ui_tab_detach_document(UiContext *ctx, void *document) {
+    uic_context_detach_document(ctx->parent, document);
+}