Apply Clean ABAP string syntax: Use backticks for literals, pipes for templates

Following Clean ABAP guidelines, replaced pipe delimiters |...| with backticks `...`
for simple string literals, while keeping |...| only for string templates with variables.

Changes:
- Simple literals: `POST`, `BUTTON_POST`, `close`, etc. (was: |...|)
- String templates: |Your name is { name }| (unchanged, contains variable)
- UI5 bindings: '{SALESORDER}' (unchanged, UI5 syntax)

This follows Clean ABAP recommendations:
- Use ` for defining literals
- Use | only to assemble text with variables
- Avoids needless overhead from pipe syntax for fixed values

16 files updated with consistent Clean ABAP string syntax.

Author: claude

docs/advanced/extensibility/custom_js.md

@@ -20,11 +20,11 @@ METHOD z2ui5_if_app~main.
         ).
       view->page(
         )->button( text  = `call custom JS`
-                   press = client->_event( |CUSTOM_JS| ) ).
+                   press = client->_event( `CUSTOM_JS` ) ).
       client->view_display( view->stringify( ) ).
   ENDIF.
 
-  IF client->get( )-event = |CUSTOM_JS|.
+  IF client->get( )-event = `CUSTOM_JS`.
       client->follow_up_action( `myFunction()` ).
   ENDIF.
 

docs/development/events.md

@@ -16,12 +16,12 @@ METHOD z2ui5_if_app~main.
  
     client->view_display( z2ui5_cl_xml_view=>factory(
         )->button(
-            text  = |post|
-            press = client->_event( |BUTTON_POST| )
+            text  = `post`
+            press = client->_event( `BUTTON_POST` )
         )->stringify( ) ).
 
     CASE client->get( )-event.
-        WHEN |BUTTON_POST|.
+        WHEN `BUTTON_POST`.
             client->message_box_display( |Your name is { name }| ).
     ENDCASE.
  
@@ -41,7 +41,7 @@ METHOD z2ui5_if_app~main.
         )->stringify( ) ).
  
     CASE client->get( )-event.
-      WHEN |BUTTON_POST|.
+      WHEN `BUTTON_POST`.
           client->message_box_display( |The button text is { client->get_event_arg( ) }| ).
     ENDCASE.
  
@@ -60,7 +60,7 @@ METHOD z2ui5_if_app~main.
         )->stringify( ) ).
  
     CASE client->get( )-event.
-        WHEN |BUTTON_POST|.
+        WHEN `BUTTON_POST`.
             "mainView--button_id
             client->message_box_display( |The button id is { client->get_event_arg( ) }| ).
     ENDCASE.
@@ -80,7 +80,7 @@ METHOD z2ui5_if_app~main.
         )->stringify( ) ).
  
     CASE client->get( )-event.
-        WHEN |BUTTON_POST|.
+        WHEN `BUTTON_POST`.
             "press
             client->message_box_display( |The evend id is { client->get_event_arg( ) }| ).
     ENDCASE.
@@ -112,7 +112,7 @@ METHOD z2ui5_if_app~main.
         )->stringify( ) ).
  
     CASE client->get( )-event.
-        WHEN |BUTTON_POST|.
+        WHEN `BUTTON_POST`.
             client->message_box_display( |The name is { client->get_event_arg( ) }| ).
     ENDCASE.
 

docs/development/general.md

@@ -31,10 +31,10 @@ CLASS z2ui5_cl_app IMPLEMENTATION.
 
         "handle events after frontend
         CASE client->get( )-event.
-          WHEN |OK|.
+          WHEN `OK`.
             DATA(lt_arg) = client->get_event_arg( ).
             "event handling
-          WHEN |CANCEL|.
+          WHEN `CANCEL`.
             "...
         ENDCASE.
 

docs/development/messages.md

@@ -36,8 +36,8 @@ For error messages, simply change the type:
 METHOD z2ui5_if_app~main.
 
   client->message_box_display(
-    text = |This is an error message|
-    type = |error| ).
+    text = `This is an error message`
+    type = `error` ).
 
 ENDMETHOD.
 ```
@@ -89,8 +89,8 @@ The message box provides basic output. For a more detailed output, use the popup
 METHOD z2ui5_if_app~main.
 
   data(lt_msg) = value bapirettab(
-    ( type = |E| id = |MSG1| number = |001| message = |An empty Report field causes an empty XML Message to be sent| )
-    ( type = |I| id = |MSG2| number = |002| message = |Product already in use| ) ).
+    ( type = `E` id = `MSG1` number = `001` message = `An empty Report field causes an empty XML Message to be sent` )
+    ( type = `I` id = `MSG2` number = `002` message = `Product already in use` ) ).
 
   client->nav_app_call( z2ui5_cl_pop_messages=>factory( lt_msg ) ).
 

docs/development/model/model.md

@@ -21,7 +21,7 @@ CLASS z2ui5_cl_app_hello_world IMPLEMENTATION.
   METHOD z2ui5_if_app~main.
 
     client->view_display( z2ui5_cl_xml_view=>factory(
-      )->page( |abap2UI5 - Hello World|
+      )->page( `abap2UI5 - Hello World`
           )->text( `My Text`
           )->text( client->_bind( name )
       )->stringify( ) ).
@@ -47,14 +47,14 @@ CLASS z2ui5_cl_app_hello_world IMPLEMENTATION.
   METHOD z2ui5_if_app~main.
 
     client->view_display( z2ui5_cl_xml_view=>factory(
-      )->page( |abap2UI5 - Hello World|
+      )->page( `abap2UI5 - Hello World`
           )->text( `Enter your name`
           )->input( client->_bind_edit( name )
-          )->button( text = |post| press = client->_event( |POST| )
+          )->button( text = `post` press = client->_event( `POST` )
       )->stringify( ) ).
 
     CASE client->get( )-event.
-      WHEN |POST|.
+      WHEN `POST`.
         client->message_box_display( |Your name is { name }.| ).
         RETURN.
     ENDCASE.

docs/development/navigation/app_state.md

@@ -26,8 +26,8 @@ CLASS z2ui5_cl_sample_app_state IMPLEMENTATION.
         view->label( 'quantity'
             )->input( client->_bind_edit( mv_quantity )
             )->button(
-                text  = |post with state|
-                press = client->_event( val = |BUTTON_POST| )
+                text  = `post with state`
+                press = client->_event( val = `BUTTON_POST` )
               )->stringify( ) ).
     ENDIF.
  

docs/development/navigation/share.md

@@ -22,8 +22,8 @@ CLASS z2ui5_cl_sample_share IMPLEMENTATION.
                          )->label( 'quantity'
                          )->input( client->_bind_edit( mv_quantity )
                          )->button(
-                             text  = |share|
-                             press = client->_event( val = |BUTTON_POST| )
+                             text  = `share`
+                             press = client->_event( val = `BUTTON_POST` )
               )->stringify( ) ).
     ENDIF.
  

docs/development/popups.md

@@ -14,8 +14,8 @@ To display a popup, use the method `client->popup_display` instead of `client->v
 METHOD z2ui5_if_app~main.
 
     DATA(lo_popup) = z2ui5_cl_xml_view=>factory_popup(
-        )->dialog( |Popup - Info|
-            )->text( |this is an information shown in a popup| ).
+        )->dialog( `Popup - Info`
+            )->text( `this is an information shown in a popup` ).
     client->popup_display( lo_popup->stringify( ) ).
 
 ENDMETHOD.
@@ -28,26 +28,26 @@ METHOD Z2UI5_if_app~main.
 
     IF client->check_on_init( ).
         DATA(lo_view) = z2ui5_cl_xml_view=>factory(
-            )->page( |abap2UI5 - Popups|
+            )->page( `abap2UI5 - Popups`
                 )->button(
-                    text  = |popup rendering, no background rendering|
-                    press = client->_event( |POPUP_OPEN| ) ).
+                    text  = `popup rendering, no background rendering`
+                    press = client->_event( `POPUP_OPEN` ) ).
         client->view_display( lo_view->stringify( ) ).
 
     ENDIF.
 
     CASE client->get( )-event.
 
-      WHEN |POPUP_OPEN|.
+      WHEN `POPUP_OPEN`.
         DATA(lo_popup) = Z2UI5_cl_xml_view=>factory_popup(
-            )->dialog( |Popup|
-                )->text( |this is a text in a popup|
+            )->dialog( `Popup`
+                )->text( `this is a text in a popup`
                 )->button(
-                    text  = |close|
-                    press = client->_event( |POPUP_CLOSE| ) ).
+                    text  = `close`
+                    press = client->_event( `POPUP_CLOSE` ) ).
         client->popup_display( lo_popup->stringify( ) ).
 
-      WHEN |POPUP_CLOSE|.
+      WHEN `POPUP_CLOSE`.
         client->popup_destroy( ).
         
     ENDCASE.
@@ -86,20 +86,20 @@ METHOD Z2UI5_if_app~main.
     IF client->check_on_init( ).
       DATA(view) = z2ui5_cl_xml_view=>factory(
         )->shell(
-            )->page( |Popover Example|
+            )->page( `Popover Example`
                 )->button(
-                    text  = |display popover|
-                    press = client->_event( |POPOVER_OPEN| )
-                    id    = |TEST| ).
+                    text  = `display popover`
+                    press = client->_event( `POPOVER_OPEN` )
+                    id    = `TEST` ).
       client->view_display( view->stringify( ) ).
 
     ENDIF.
 
     CASE client->get( )-event.
 
-      WHEN |POPOVER_OPEN|.
+      WHEN `POPOVER_OPEN`.
         DATA(popover) = Z2UI5_cl_xml_view=>factory_popup(
-            )->popover( placement = |Left|
+            )->popover( placement = `Left`
                 )->text( `this is a popover`
                 )->button(
                     id    = `my_id`
@@ -109,7 +109,7 @@ METHOD Z2UI5_if_app~main.
             xml   = view->stringify( )
             by_id = `my_id` ).
 
-      WHEN |POPOVER_CLOSE|.
+      WHEN `POPOVER_CLOSE`.
         client->popover_destroy( ).
     ENDCASE.
 

docs/development/specific/barcodes.md

@@ -23,14 +23,14 @@ METHOD z2ui5_if_app~main.
             )->barcode_scanner_button(
                 dialogtitle = `Barcode Scanner`
                 scansuccess = client->_event(
-                    val   = |SCAN_SUCCESS| 
-                    t_arg = VALUE #( 
+                    val   = `SCAN_SUCCESS`
+                    t_arg = VALUE #(
                         ( `${$parameters>/text}`   )
                         ( `${$parameters>/format}` ) ) ) ).
 
     client->view_display( lo_view->stringify( ) ).
 
-    IF client->get( )-event = |SCAN_SUCCESS|.
+    IF client->get( )-event = `SCAN_SUCCESS`.
 
         DATA(lv_input)  = client->get_event_arg( 1 ).
         DATA(lv_format) = client->get_event_arg( 2 ).
@@ -88,10 +88,10 @@ CLASS z2ui5_cl_sample_focus IMPLEMENTATION.
     ENDIF.
 
     CASE client->get( )-event.
-      WHEN |one_enter|.
+      WHEN `one_enter`.
         focus_id = 'id2'.
         client->view_model_update( ).
-      WHEN |two_enter|.
+      WHEN `two_enter`.
         focus_id = 'id1'.
         client->view_model_update( ).
     ENDCASE.
@@ -128,17 +128,17 @@ CLASS z2ui5_cl_sample_sound IMPLEMENTATION.
                    value       = client->_bind_edit( company_code )
                    type        = `Number`
                    placeholder = `Company Code`
-                   submit      = client->_event( |CUSTOM_JS_FROM_EB| ) ).
+                   submit      = client->_event( `CUSTOM_JS_FROM_EB` ) ).
       vbox->button( text  = `call custom JS from EB`
-                    press = client->_event( |CUSTOM_JS_FROM_EB| ) ).
+                    press = client->_event( `CUSTOM_JS_FROM_EB` ) ).
 
       client->view_display( view->stringify( ) ).
     ENDIF.
 
-    IF client->get( )-event = |CUSTOM_JS_FROM_EB|.
+    IF client->get( )-event = `CUSTOM_JS_FROM_EB`.
       IF company_code IS INITIAL.
         client->follow_up_action( val = `playSound()` ).
-        client->message_box_display( type = |error| text = |Input is empty!| ).
+        client->message_box_display( type = `error` text = `Input is empty!` ).
       ELSE.
         CLEAR company_code.
       ENDIF.

docs/development/specific/camera.md

@@ -18,10 +18,10 @@ CLASS z2ui5_cl_demo_app_306 IMPLEMENTATION.
   METHOD z2ui5_if_app~main.
 
     IF client->check_on_init( ).
-      DATA(page) = z2ui5_cl_xml_view=>factory( )->shell( )->page( |abap2UI5 - Device Camera Picture|
+      DATA(page) = z2ui5_cl_xml_view=>factory( )->shell( )->page( `abap2UI5 - Device Camera Picture`
                 )->_z2ui5( )->camera_picture(
                     value    = client->_bind_edit( mv_picture_base )
-                    onphoto  = client->_event( |CAPTURE| )  ).
+                    onphoto  = client->_event( `CAPTURE` )  ).
       client->view_display( page->stringify( ) ).
     ENDIF.