Double click functionality in Webdynpro ABAP ALV

Question

Hello!
I have web dynpro application with ALV Table.
I need to reproduce the standard R/3 functionality: after the double clicking on the table row the new window with content of that row's fields should appear in the form layout .
For example, such functionality we have in the RSDMD transaction.
So I have two questions:
1. How to catch double click in the alv table of the  Web dynpro application;
2. How to represent information from the alv table row in the form layout?
Could you please help me?
Thanks,
Mariya

Answer 1

Hi Maria,
Say suppose I am displaying the information from SFLIGHT in an ALV format & when I click on any 1 row's CARRID I would like to fetch the corresponding BOOKING details for that particular combination of CARRID, CONNID & FLDATE then I can proceed as follows:
1) Make the CARRID cell of your ALV to appear as an LinkToAction
2) Create an event handler for the ON_CLICK event of the ALV & within this event handler fetch the information about the row's CARRID, CONNID & FLDATE. Call a popup window and display the corresponding information in this row.
Below is the code to make your CARRID field as an LinkToAction:
METHOD wddomodifyview .
  wd_this->build_alv( ).
ENDMETHOD.
METHOD build_alv .
  DATA:
    lr_alv_usage       TYPE REF TO if_wd_component_usage,
    lr_if_controller   TYPE REF TO iwci_salv_wd_table,
    lr_config          TYPE REF TO cl_salv_wd_config_table,
    lr_column_settings TYPE REF TO if_salv_wd_column_settings,
    lt_columns         TYPE        salv_wd_t_column_ref,
    lr_link            TYPE REF TO cl_salv_wd_uie_link_to_action,
    lr_checkbox        TYPE REF TO cl_salv_wd_uie_checkbox,
    lr_image           TYPE REF TO cl_salv_wd_uie_image.
  FIELD-SYMBOLS
    <fs_column> LIKE LINE OF lt_columns.
* Instantiate the ALV Component
  lr_alv_usage = wd_this->wd_cpuse_alv( ).
  IF lr_alv_usage->has_active_component( ) IS INITIAL.
    lr_alv_usage->create_component( ).
  ENDIF.
* Get reference to model
  lr_if_controller = wd_this->wd_cpifc_alv( ).
  lr_config        = lr_if_controller->get_model( ).
* Set the UI elements.
  lr_column_settings ?= lr_config.
  lt_columns = lr_column_settings->get_columns( ).
  LOOP AT lt_columns ASSIGNING <fs_column>.
    if <fs_column>-id = 'CARRID'.
      CREATE OBJECT lr_link.
      lr_link->set_text_fieldname( <fs_column>-id ).
      <fs_column>-r_column->set_cell_editor( lr_link ).
    ENDif.
  ENDLOOP.
ENDMETHOD.