In webdynpro for ABAP alv table issue

Question

hello gurus,
                  i am new for webdynpro for ABAP.i strucked at one point at designing time.anybody  could you suggest me on this.
thanks in advance.
let me explain my scenario first.
in my webdynpro for ABAP developement i have one alv table having ten fields.i am featching the data for eight fields from one Ztabale and updating , for rest of two fields we need to fill after displaying output using the respective F4 help. Right now these two fields are in input editable mode.now i am getting the values successfully from F4 help and at the same time it is allowing MANUAL ENTRIES also but as per my requirement it  should not allow  any manual entries . for this i have made these two fields are in readonly mode as like as rest of fields to avoid the MANUAL ENTRIES  but at this time i didnot get any F4 helpfor those two fields.
so how can i achive my goal in this thing could any one suggest me.
my final conclusion is we need to get only F4 help values into those two fields . it should not allow any manual values at any point of time.
best regards,
babu

Answer 1

ya hi  harshit,
      my self also used same code in my action part . here i have one table with four fields  carrid , connid , fldate , price.
for carrid i have created freely programmed search help.but if it is in display mode there is no F4 help in enable mode.
in context for attribute carrid
DATA lo_nd_flight TYPE REF TO if_wd_context_node.
  DATA lo_el_flight TYPE REF TO if_wd_context_element.
  DATA ls_flight TYPE wd_this->element_flight.
  DATA lt_flight TYPE wd_this->elements_flight.
navigate from <CONTEXT> to <FLIGHT> via lead selection
  lo_nd_flight = wd_context->get_child_node( name = wd_this->wdctx_flight ).
  select connid fldate price from sflight into CORRESPONDING FIELDS OF TABLE
    lt_flight UP TO 20 ROWS.
@TODO handle non existant child
IF lo_nd_flight IS INITIAL.
ENDIF.
get element via lead selection
lo_el_flight = lo_nd_flight->get_element( ).
alternative access  via index
lo_el_flight = lo_nd_flight->get_element( index = 1 ).
@TODO handle not set lead selection
IF lo_el_flight IS INITIAL.
ENDIF.
get all declared attributes
lo_el_flight->get_static_attributes(
   IMPORTING
     static_attributes = ls_flight ).
CALL METHOD lo_nd_flight->bind_table
  EXPORTING
    new_items            = lt_flight
   set_initial_elements = ABAP_TRUE
   index                =
DATA: lo_cmp_usage TYPE REF TO if_wd_component_usage.
DATA: lo_interfacecontroller TYPE REF TO iwci_salv_wd_table.
    instantiate ALV component usage if necessary
  lo_cmp_usage = wd_this->wd_cpuse_alv( ).
  IF lo_cmp_usage->has_active_component( ) IS INITIAL.
    lo_cmp_usage->create_component( ).
  ENDIF.
    pass reference to data node to instance of ALV usage
  lo_interfacecontroller = wd_this->wd_cpifc_alv( ).
  lo_interfacecontroller->set_data( r_node_data = lo_nd_flight ).
Configure ALV
  DATA lr_config TYPE REF TO cl_salv_wd_config_table.
  lr_config = lo_interfacecontroller->get_model( ).
**declerations
  DATA: lt_columns TYPE salv_wd_t_column_ref,
        ls_columns TYPE salv_wd_s_column_ref,
        lr_input TYPE REF TO cl_salv_wd_uie_input_field,
        name TYPE string,
        lt_node_info TYPE wdr_context_attr_info_map,
        ls_node_info TYPE wdr_context_attribute_info,
        lv_tabix TYPE sy-tabix,
        lr_info TYPE REF TO if_wd_context_node_info.
  TYPES: BEGIN OF ty_name,
          name TYPE string,
         END OF ty_name.
  DATA: lt_name TYPE TABLE OF ty_name,
        ls_name TYPE ty_name.
**for getting node info
*Get the context node information
  lr_info = lo_nd_flight->get_node_info( ).
  lt_node_info = lr_info->get_attributes( ).
  LOOP AT lt_node_info INTO ls_node_info.
    CASE ls_node_info-name.
      WHEN 'CARRID'.
        ls_name-name = ls_node_info-name.
        APPEND ls_name TO lt_name.
     WHEN 'REGIONALOFFICER'.
       ls_name-name = ls_node_info-name.
       APPEND ls_name TO lt_name.
     WHEN 'INSPECTORNAME'.
       ls_name-name = ls_node_info-name.
       APPEND ls_name TO lt_name.
    ENDCASE.
  ENDLOOP.
*Logic for  Table Horizontal Scrolling
  lr_config->if_salv_wd_table_settings~set_visible_row_count( 13 ).
  "  lr_config->if_salv_wd_table_settings~set_width( '1085' ).
  lr_config->if_salv_wd_table_settings~set_width( '100%' ).
  lr_config->if_salv_wd_table_settings~set_scrollable_col_count( 8 ).
  "  lr_config->if_salv_wd_table_settings~set_fixed_table_layout( abap_true ).
  lr_config->if_salv_wd_table_settings~set_first_visible_scroll_col( 'CARRID' ).
  lr_config->if_salv_wd_table_settings~set_cell_action_event_enabled( abap_true ).
Set the table editable .
  DATA: lr_table_settings TYPE REF TO if_salv_wd_table_settings.
  lr_table_settings ?= lr_config.
  lr_table_settings->set_read_only( abap_false ).
  lr_table_settings->set_read_only( abap_true ).
  DATA: lr_column_settings TYPE REF TO if_salv_wd_column_settings,
        lr_column TYPE REF TO cl_salv_wd_column.
DATA: lt_string TYPE STANDARD TABLE OF string,
        ld_string TYPE string,
        ld_int TYPE i,
        lv_index TYPE i.
Make few columns editable and attach inputfield, if permitted.
    DATA lr_input_field TYPE REF TO cl_salv_wd_uie_input_field.
    CLEAR lt_string.
    APPEND 'CARRID' TO lt_string.
    LOOP AT lt_string INTO ld_string.
      lr_column_settings ?= lr_config.
      lr_column = lr_column_settings->get_column( ld_string ).
      CREATE OBJECT lr_input_field
        EXPORTING
          value_fieldname = ld_string.
      lr_input_field->set_read_only( abap_true ).
      lr_column->set_cell_editor( lr_input_field ).
    ENDLOOP.
    CLEAR lt_string.