visibility

[Former Member]

Hi ,

I am using the following code for visibility of a container , have done with binding. Its comming up with an error saying as below :

*****************************************************

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

The error occurred on the application server HCCR3DEV2_RDU_00 and in the work process 0 .

The termination type was: RABAX_STATE

DATA lo_el_context TYPE REF TO if_wd_context_element.

DATA ls_context TYPE wd_this->element_context.

DATA lv_visible LIKE ls_context-visibility_1.

if lv_budg_mang_check_box = ' '. "Based on some condition

lv_visible = '02'.

lo_el_context->set_attribute(

EXPORTING

name = 'VISIBILITY_1'

value = lv_visible ).

endif.

Please let me know if there are any corrections to the above code

Thanks,

Kumar

[former_member262988 · Accepted solution]

Hi,

In your code the reference for lo_el_context is missing........

lo_el_context = wd_context->get_child_node( wd_this->element_context ).

This wil solve your problem..

Thanks,

Shailaja Ainala.

[arjun_thakur]

Hi Kumar,

Simply use the code wizard to set the value to an attribute. Don't remove any code (for the generated code) because it could lead to dump. Just press ctrl + F7 and select the attribute name and simply pass the value. It'll work.

Regards

Arjun

[Former Member]

Hi ,

The code has run with out any problem, But when the condition is 'X' it should display the view which its not doing in for both conditions . Could you please let me know where i am going wrong ?

DATA lo_el_context TYPE REF TO if_wd_context_element.

DATA ls_context TYPE wd_this->element_context.

DATA lv_visibility_1 LIKE ls_context-visibility_1.

if lv_budg_mang_check_box = ' '. "Based on some condition

lv_visibility_1 = '01'.

• get element via lead selection

lo_el_context = wd_context->get_element( ).

• get single attribute

lo_el_context->get_attribute(

EXPORTING

name = `VISIBILITY_1`

IMPORTING

value = lv_visibility_1 ).

else.

lv_visibility_1 = '02'.

• get element via lead selection

lo_el_context = wd_context->get_element( ).

• get single attribute

lo_el_context->get_attribute(

EXPORTING

name = `VISIBILITY_1`

IMPORTING

value = lv_visibility_1 ).

endif.

Thanks,

Kumar.

[Former Member]

Hi

use modify your code like this.

DATA lo_el_context TYPE REF TO if_wd_context_element.
DATA ls_context TYPE wd_this->element_context.
DATA lv_visibility_1 LIKE ls_context-visibility_1.

if lv_budg_mang_check_box = ' X'. "Based on some condition

lv_visibility_1 = '02'.

* get element via lead selection
lo_el_context = wd_context->get_element( ).

* get single attribute
lo_el_context->get_attribute(
EXPORTING
name = `VISIBILITY_1`
IMPORTING
value = lv_visibility_1 ).

else.

lv_visibility_1 = '01'.

* get element via lead selection
lo_el_context = wd_context->get_element( ).

* get single attribute
lo_el_context->get_attribute(
EXPORTING
name = `VISIBILITY_1`
IMPORTING
value = lv_visibility_1 ).


endif.

It will help You.

Regards,

Rohit

[arjun_thakur]

Hi Kumar,

The code which you have written, in that you are using get_attribute, instead you need to use set_attribute method.

The code should be like:

DATA lo_el_context TYPE REF TO if_wd_context_element.
DATA ls_context TYPE wd_this->element_context.
DATA lv_visibility_1 LIKE ls_context-visibility_1.

if lv_budg_mang_check_box = ' '. "Based on some condition

* get element via lead selection
lo_el_context = wd_context->get_element( ).

lo_el_context->set_attribute(
EXPORTING
name = `VISIBILITY_1`
value = cl_wd_uielement=>e_visible-none ).

else.

* get element via lead selection
lo_el_context = wd_context->get_element( ).

lo_el_context->set_attribute(
EXPORTING
name = `VISIBILITY_1`
value = cl_wd_uielement=>e_visible-visible). "values like 01 or 02 should not be hard coded.

endif.

I hope it helps.

Regards

Arjun

[saket_abhyankar]

Hi Kumar,

Where exactly r u getting dump?

Try to create an atribute of type char1 in the context to map with property 'visible'.

then apply following logic to make it visible

if lv_budg_mang_check_box = ' '. "make it visible

lv_visible = 'X'.

else " make it invisible

lv_visible = ' '. "space

endif.

lo_el_context->set_attribute(

EXPORTING

name = 'VISIBILITY_1'

value = lv_visible ).