Drop down values for table in a view not getting populated dynamically

Question

Hi Experts,
The problem which i am facing is as follows
In an existing web dynpro component , i already have a view and it consists of table which has 3 columns.All the three columns are non editable
MATERIAL     MAT_DESC     MAT_DEL_FLAG
ABC          
EFG          
HIJ
Now i need to add 2 more columns after the MAT_DEL_FLAG.These two PLANt and STORAGE LOCATION columns must have drop down values
The context refers to a standard Database ZTABLE to which these two fields are added.
MATERIAL     MAT_DESC     MAT_DEL_FLAG     PLANT     STORAGE_LOCATION
ABC                    
EFG                    
HIJ                    
The Plant column must have the drop down values based on Material .
If we select some value for Plant , then based on the value of plant the storage location drop down values must be populated.
So as per this logic , the drop down values for plant for each row must be different.
Please let me know how to achieve this.
This is a normal table and not an ALV table.
Also please let me know whether the drop down field must be drop down by key or drop down by index.
This is very urgent.
Thanks in advance
Sindhu

Answer 1

Refreshing things again for you -
1. As I have already pointed, create 2 context attributes for VALUESETS for both plant and St.loc.
2. Create dropdown by indexes for both of them, assign valusets to respective attributes using node information.
3. Go to the plant dropdown and create the action for it ONSELECT event - when you chagne the dropdown of plant then populate the respective storage loc.
4.Now, As you are selecting a row (leadselect) you have populated the plant and loc details....write the code for lead selection event of the table
You will get the lead selection index right using node interface (IF_WD_CONTEXT_NODE)
LOOP AT ITAB INTO WA_ITAB.
if sy-tabix eq lv_lead_index.
clear wa_valuset.
wa_valueset-key = 'X'.   "plant
wa_valueset-value = 'X'.
append wa_valueset to it_valueset1.
* popultae the storage location valuset based on the plant selected (bydefault it is 1 right in dropdown)
clear wa_valuset.
wa_valueset-key = 'XX'.   "storage loc
wa_valueset-value = 'XY'.
append wa_valueset to it_valueset2.
else.
* Fill the valusets for all other rows as different or as per your requirement.
endif.
wa_itab-valuset1 = lt_valueset1.
wa_itab-valuset2 = lt_valueset2.
modify itab from wa_itab transporting valuset1 valuset2.
clear wa_itab.
ENDLOOP.
lo_node->bind_table ( it_tab).
Now for that Row, if a plant value is changed, respective storgae loc has to be filled right...then in that ONSELECT of plnat drodpwon again you need to write a piece of code...using the same code with a little modifications.
Hope this is clear.
Check this article on the same - but here ALV is used...the concept is same  use it for your table -
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/d0cbdde3-fe58-2c10-fcbc-8db18e693877?QuickLink=index&overridelayout=true
the above code you hvae pasted  - i think it fills only for the 1st time....
Regards,
Lekha.
Edited by: Lekha on Dec 20, 2011 12:00 PM