Reg:how disaplay selection range for date field

Question

hi all
can you please  let me know how to write  the code in wdabap  to display a date field with range option.i mean in abap we use at selection screen  ,but coming to wdabap can you  help how to write the code in wdabap.
Thanks in advance
Deepika

Answer 1

To simplify the requirement, let me consider the followign understanding:
1. You need few fields in the selection screen. They need to be select options and some parameter fields.
2. The user clicks the button. You need to read teh user entered data.
Once, you have teh data in your code, assign it to the context node - attributes. later, you need to decide what you shoudl do with that data.
Sol: 1. To obtain fields into selection screen, use the component "wdr_select_options" and *** the interface view into your window. Make the view as default.
Now,  you need to build the select options. Firstly create a method or insert the code in init().
DATA: lr_componentcontroller TYPE REF TO ig_componentcontroller,
        l_ref_cmp_usage TYPE REF TO if_wd_component_usage.
create the used component
  l_ref_cmp_usage = wd_this->wd_cpuse_select_options( ).
  IF l_ref_cmp_usage->has_active_component( ) IS INITIAL.
    l_ref_cmp_usage->create_component( ).
  ENDIF.
  wd_this->m_wd_select_options = wd_this->wd_cpifc_select_options( ).
init the select screen
  wd_this->m_handler = wd_this->m_wd_select_options->init_selection_screen( ).
  wd_this->m_handler->set_global_options(
                              i_display_btn_cancel  = abap_false
                              i_display_btn_check   = abap_false
                              i_display_btn_reset   = abap_true
                              i_display_btn_execute = abap_false ).
Adding a block (type Tray) to the select-options
  wd_this->m_handler->add_block(
    i_id         = `BSC01`
    i_block_type = if_wd_select_options=>mc_block_type_tray
    i_title      = `Selection Screen` ).
Adding a parameter field to the created block
Create a reference to the type of customer number KUNNR
  CREATE DATA lr_field TYPE kunnr.
Sets the airline code initial value
  ASSIGN lr_field->* TO <fs_field>.
Add the parameter to the group
  wd_this->m_handler->add_parameter_field(
    i_id           = `KUNNR`
    i_within_block = `BSC01`
    i_obligatory   = abap_true
    i_value        = lr_field ).
FREE lr_field.
Adding a select-options field to the created block
Create a reference to the material number range table
  lr_field = wd_this->m_handler->create_range_table( `MATNR` ).
Add the select-option to the group
  wd_this->m_handler->add_selection_field(
    i_id           = `MATNR`
    i_within_block = `BSC01`
    it_result      = lr_field ).
  FREE lr_field.
The code with method "set_global_options" is used to make the buttons visible or disappear.
Its convinient to create your own button with an action instead or subscribing to the action of exceute button.
Sol. 2: Read the data.
  FIELD-SYMBOLS:
    <fs_sel_item> LIKE LINE OF lt_sel_item,
    <fs_kunnr>   TYPE kunnr,
    <fs_matnr>   TYPE ranges_matnr.
    wd_this->m_handler->get_value_of_parameter_field(
      EXPORTING i_id = 'KUNNR'
      RECEIVING r_value = p_kunnr ).
Get the selection-screen items
      wd_this->m_handler->get_selection_fields(
        IMPORTING et_fields = lt_sel_item ).
Retrieve the values from the select-options items
      LOOP AT lt_sel_item ASSIGNING <fs_sel_item>.
        CASE <fs_sel_item>-m_id.
          WHEN `MATNR`.
            ASSIGN <fs_sel_item>-mt_range_table->* TO <fs_matnr>.
         WHEN < Other sel-option'
       ENDCASE.
     ENDLOOP.
Obtain a reference to your context node and assign the field symbols to the attributes.
Finally, you would have the data in your nodes. Now, you need to handle the coe as per your req.
Regards,
Sharath
Edited by: Sharath M G on Aug 27, 2010 9:45 AM