Working shell bar with title mega menu sample

src/z2ui5_cl_demo_app_000.clas.abap

@@ -1268,7 +1268,7 @@ CLASS z2ui5_cl_demo_app_000 IMPLEMENTATION.
 
          panel->generic_tile(
             header    = 'Shell Bar'
-*            subheader = '7 Areas'
+            subheader = 'title mega menu'
             press     =  client->_event( 'Z2UI5_CL_DEMO_APP_269' )
             mode      = 'LineMode'
             class     = 'sapUiTinyMarginEnd sapUiTinyMarginBottom'

src/z2ui5_cl_demo_app_269.clas.abap

@@ -4,21 +4,42 @@
 
   PUBLIC SECTION.
     INTERFACES z2ui5_if_app.
+
+  PROTECTED SECTION.
+    DATA check_initialized TYPE abap_bool.
+
+    METHODS display_view.
+    METHODS on_event.
+
+    DATA client TYPE REF TO z2ui5_if_client.
 ENDCLASS.
 
 
 CLASS z2ui5_cl_demo_app_269 IMPLEMENTATION.
   METHOD z2ui5_if_app~main.
-    DATA(view) = z2ui5_cl_xml_view=>factory( ).
+    me->client = client.
+
+    IF check_initialized = abap_false.
+      check_initialized = abap_true.
+      display_view( ).
+    ENDIF.
+
+    on_event( ).
+  ENDMETHOD.
+
+  METHOD display_view.
+
+    DATA(view) = z2ui5_cl_xml_view=>factory(  ).
 
     view->shell_bar(
-        title               = `Application Title`
-        secondTitle         = `Short description`
+        title               = `Shell Bar`
+        secondTitle         = `with title mega menu`
         homeIcon            = `https://sapui5.hana.ondemand.com/sdk/resources/sap/ui/documentation/sdk/images/logo_sap.png`
-        showCopilot         = abap_true
+        shownavbutton       = xsdbool( client->get( )-s_draft-id_prev_app_stack IS NOT INITIAL )
         showSearch          = abap_true
         showNotifications   = abap_true
         notificationsNumber = `2`
+        navbuttonpressed    = client->_event( 'BACK' )
         )->_generic( name = `menu`
                      ns   = `f`
             )->_generic( name = `Menu`
@@ -30,10 +51,19 @@
             )->get_parent(
         )->_generic( name = `profile`
                      ns   = `f`
-            )->avatar( initials = 'UI' ).
+            )->avatar( ns       = `f`
+                       initials = 'UI' ).
 
     DATA(xml) = view->stringify( ).
 
     client->view_display( xml ).
+
+  ENDMETHOD.
+
+  METHOD on_event.
+    CASE client->get( )-event.
+      WHEN 'BACK'.
+        client->nav_app_leave( ).
+    ENDCASE.
   ENDMETHOD.
 ENDCLASS.