ABAP_to_the_Future

10
ALV SALV Reporting Framework
RETURN.
ENDIF.
lo_alv->get_frontend_fieldcatalog(
IMPORTING
et_fieldcatalog = lt_fcat ).
make_column_editable( :
EXPORTING id_column_name = 'MONSTER_HATS’
CHANGING ct_fcat = lt_fcat ),
EXPORTING id_column_name = 'MONSTER_HEADS'
CHANGING ct_fcat = lt_fcat ),
lo_alv->set_frontend_fieldcatalog( lt_fcat ).
ls_layout-stylefname = 'CELLTAB'.
lo_alv->set_frontend_layout( ls_layout ).
lo_alv->refresh_table_display( ).
cl_gui_cfw=>flush( ).
WHEN etc etc
Listing 10.32 User Command to Make a SALV Grid Editable
Naturally, now you need to code the custom methods called by Listing 10.32.
First, code the GET_ALV_GRID method in the ZCL_BC_VIEW_SALV_TABLE class (Listing
10.33), which has a single returnin g parameter typed as an instance of CL_
GUI_ALV_GRID. The method gets this instance by calling the equivalently named
method GET_ALV_GRID of the custom ZCL_SALV_MODEL class that was defined in
Section 10.3.3.
METHOD get_alv_grid.
* We have a container, so
* then the grid needs to be retrieved via the adapter
ro_alv_grid = mo_salv_model->get_alv_grid( ).
ENDMETHOD.
Listing 10.33 GET_ALV_GRID of ZCL_BC_VIEW_SALV_TABLE Method
Next, back in the co ntroller, define the MAKE_COLUMN_EDITABLE method, which
does the dirty work of changing the field catalog so that cells can be edited. This
code can be seen in Listing 10.34. Here , you need to loop through the internal
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