ABAP WebDynpro Fields Set Invisible Status

[Former Member]

Hi All,

I am new to this ABAP WebDynpro programming, i have requirement, based on IF conditions i need to set my fields In-Visible and Visible mode,

ex:

IF XXXXXX

THEN FIELD VISIBLE

ELSE XXXXXX

FIELD IN-VISIBLE

ENDIF.

Thanks in Advance.

Thanks and Regards,

Abhi.

[Former Member]

Is this the textview/Input field....

If it is Input field, then you can use follow Jagdish's post or if is text view then the type should be WDUI_VISIBILITY(01 as None,

02 as Visible)..

Regards,

Lekha

[Former Member]

Hi Abhi,

You can create a Attribute "F_visible" of type WDY_BOOLEAN in the Context Node.

Bind this Attribute to the 'Visible' Property of the Required field on View

And then in the Method you can Set the value of the attribute "F_visible" to 'X' (for visible ) or ' ' (Invisble) as per the requirement.

Regards,

Jagdish

[Former Member]

Hi Jagadish,

Thanks for your prompt response, based on your instructions i did like below

I created F_Visible in Context with type WDY_BOOLEAN and i given default value to X, then i bind this value to my input fields, after the using WebDynpro Code wizrd i called F_Visible attribute, the below one is my code, please correct me if any thing wrong.

IF(Condition)

DATA lo_el_context TYPE REF TO if_wd_context_element.

DATA ls_context TYPE wd_this->Element_context.

DATA lv_f_visible TYPE wd_this->Element_context-f_visible.

• get element via lead selection

lo_el_context = wd_context->get_element( ).

• @TODO handle not set lead selection

IF lo_el_context IS INITIAL.

ENDIF.

• @TODO fill attribute

• lv_f_visible = 1.

• set single attribute

lo_el_context->set_attribute(

name = `F_VISIBLE`

value = lv_f_visible ).

xxxxxxxx

ELSE

lv_f_visible = 'X'.

• set single attribute

lo_el_context->set_attribute(

name = `F_VISIBLE`

value = lv_f_visible ).

when i was testing my applicaiton i am getting Access via 'NULL' object reference not possible.

could you please help on this setting if i did any thing wrong.

Thanks in Advance.

Thanks and Regards,

Abhi Ram.

Edited by: Abhiram on Oct 30, 2009 3:18 PM

[Former Member]

Hi,

Check in ST22 for the error nad paste it....

Regards,

Lekha.

[Former Member]

Hi Lekha,

Nice to see your prompt response, The Below one is the error:

The following error text was processed in the system HT1 : Access via 'NULL' object reference not possible.

The error occurred on the application server ebsptst30a_HT1_11 and in the work process 0 .

The termination type was: RABAX_STATE

The ABAP call stack was:

Method: WDDOINIT of program /1BCWDY/PY788O20AL3MH2TLDHWN==CP

Method: IF_WDR_VIEW_DELEGATE~WD_DO_INIT of program /1BCWDY/PY788O20AL3MH2TLDHWN==CP

Method: DO_INIT of program CL_WDR_DELEGATING_VIEW========CP

Method: INIT_CONTROLLER of program CL_WDR_CONTROLLER=============CP

Method: INIT_CONTROLLER of program CL_WDR_VIEW===================CP

Method: INIT of program CL_WDR_CONTROLLER=============CP

Method: GET_VIEW of program CL_WDR_VIEW_MANAGER===========CP

Method: BIND_ROOT of program CL_WDR_VIEW_MANAGER===========CP

Method: INIT of program CL_WDR_VIEW_MANAGER===========CP

Method: INIT_CONTROLLER of program CL_WDR_INTERFACE_VIEW=========CP

Thanks and Regards,

Abhi Ram.

[Former Member]

Hi Abhi Ram,

Code seems to be perfect. Can you please Debug and check if any other part of the code is giving the abap dump?

Regards,

Jagdish

[Former Member]

Solved by Myself