update

Author: oblomov-dev

docs/development/barcodes.md

@@ -43,4 +43,55 @@ Please note that this feature is only available when bootstrapping with the UI5
 :::
 
 #### Device
-Most scanner devices have an integrated scanning function. In such cases, you can simply create an input field and ensure the focus is correctly set. The scanned data will populate the input field as if it were typed via a keyboard.
+Most scanner devices have an integrated scanning function. In such cases, you can simply create an input field and ensure the focus is correctly set. The scanned data will populate the input field as if it were typed via a keyboard. 
+
+Below is an example showing how to handle input focus and manage transitions between input fields after scanning and triggering ENTER:
+
+```abap
+CLASS z2ui5_cl_sample_focus DEFINITION PUBLIC FINAL CREATE PUBLIC .
+
+  PUBLIC SECTION.
+    INTERFACES z2ui5_if_app.
+    DATA one      TYPE string.
+    DATA two      TYPE string.
+    DATA focus_id TYPE string.
+
+ENDCLASS.
+
+CLASS z2ui5_cl_sample_focus IMPLEMENTATION.
+  METHOD z2ui5_if_app~main.
+
+    IF client->check_on_init( ).
+      focus_id = 'id1'.
+
+      DATA(page) = z2ui5_cl_xml_view=>factory( )->page( ).
+      page->simple_form(
+         )->content( ns = 'form'
+         )->label( 'One'
+         )->input(
+              id = 'id1'
+              value = client->_bind_edit( one )
+              submit = client->_event( 'one_enter' )
+         )->label( 'Two'
+         )->input(
+              id = 'id2'
+              value = client->_bind_edit( two )
+              submit = client->_event( 'two_enter' ) ).
+
+      page->_z2ui5( )->focus( focusid = client->_bind( focus_id ) ).
+      client->view_display( page->stringify( ) ).
+
+    ENDIF.
+
+    CASE client->get( )-event.
+      WHEN 'one_enter'.
+        focus_id = 'id2'.
+        client->view_model_update( ).
+      WHEN 'two_enter'.
+        focus_id = 'id1'.
+        client->view_model_update( ).
+    ENDCASE.
+
+  ENDMETHOD.
+ENDCLASS.
+```