DYNAMIC INPUT FIELD AND CONTEXT

[Former Member]

Hello experts,

I have a requirment where i need to create a dynamic input field and dynamic attributes, these attributes are to be binded with the dynamic input field.

help needed????????????

Immedate points rewarded.....

Thanks in Advance

[Former Member · Accepted solution]

Can anyone plz provide the sample code to create a dynamic input field and dynamic attribute, the dynamic attribute should be binded to the input field.

Thanks in Advance.

[Former Member · Accepted solution]

Hi Suhail,

Try out the following code in WDDOMODIFYVIEW.

IF first_time = abap_true.

DATA: inp_fld type ref to cl_wd_input_field,

lbl type ref to cl_wd_label,

context_info type ref to if_wd_context_node_info,

attr_info type wdr_context_attribute_info,

root_container type ref to cl_wd_transparent_container.

context_info = wd_context->get_node_info( ).

attr_info-name = 'INP1'.

attr_info-type_name = 'STRING'.

CALL METHOD context_info->ADD_ATTRIBUTE

EXPORTING

attribute_info = attr_info.

root_container ?= view->get_element( 'ROOTUIELEMENTCONTAINER' ).

inp_fld = cl_wd_input_field=>new_input_field( id = 'INP' bind_value = 'INP1').

lbl = cl_wd_label=>new_label( id = 'LBL' label_for = 'INP' ).

wd_context->set_attribute( name = 'INP1' value = 'DEFAULT' ).

CALL METHOD CL_WD_MATRIX_LAYOUT=>NEW_MATRIX_LAYOUT

EXPORTING

CONTAINER = root_container.

CALL METHOD CL_WD_MATRIX_HEAD_DATA=>NEW_MATRIX_HEAD_DATA

EXPORTING

ELEMENT = lbl.

CALL METHOD CL_WD_MATRIX_DATA=>NEW_MATRIX_DATA

EXPORTING

ELEMENT = inp_fld.

root_container->add_child( lbl ).

root_container->add_child( inp_fld ).

ENDIF.

Thanks and Regards,

Saravana. S

[Former Member]

It worked.

thanks.

[Former Member]

I have written the following code in modifyview but it throws a <b> NULL</b> error when i bind the dynamic attribute to the input field.

Thanks in advance.

data:

m_input_field type ref to cl_wd_input_field.

data: m_label type ref to cl_wd_label.

DATA:

*Node Info

rootnode_info TYPE REF TO if_wd_context_node_info.

data: dyn_node TYPE REF TO if_wd_context_node.

data: test type string.

rootnode_info = wd_context->get_node_info( ).

data: lr_carrid_attr_info TYPE wdr_context_attribute_info.

lr_carrid_attr_info-name = 'CARRID'.

lr_carrid_attr_info-type_name = 'STRING'.

CALL METHOD rootnode_info->ADD_ATTRIBUTE

EXPORTING

attribute_info = lr_carrid_attr_info.

data:

lr_container type ref to cl_wd_transparent_container,

lr_dropdown type ref to cl_wd_dropdown_by_key.

• let's do it only once

• check first_time = abap_true.

• get a pointer to the RootUIElementContainer

lr_container ?= view->get_element( 'ROOTUIELEMENTCONTAINER' ).

• lets create a label and an input field and add both to the container

• m_label = cl_wd_label=>new_label( id = 'LABEL1' label_for = 'TXT' ).

wd_context->set_attribute( name = 'CARRID' value = 'text' ).

m_input_field = cl_wd_input_field=>new_input_field( id = 'TXT' ).

m_input_field->BIND_VALUE( 'CARRID' ).

• lr_container->add_child( m_label ).

lr_container->add_child( m_input_field ).

[Former Member]

Hi Suhail,

Could you tell the exact error you are getting because a similar code works perfectly fine for me.

Thanks and Regards,

Saravana. S

[S-H]

Hi,

In order to create the context obtain the node info of a node(or root node if you want to create the context below root context) by calling get_node_info(). There you can add a new child node or attributes by calling the corresponding methods. like add_new_child_node, add_attribute etc.

Refer the following blog for creating the UI elements(input field) dynamically:

<a href="/people/thomas.szcs/blog/2006/02/22/dynamic-programming-in-web-dynpro-abap--part-iii-aggregations-and-ddic-binding-of-viewelements:///people/thomas.szcs/blog/2006/02/22/dynamic-programming-in-web-dynpro-abap--part-iii-aggregations-and-ddic-binding-of-viewelements

Also refer:

<a href="/people/thomas.szcs/blog/2006/01/03/dynamic-programming-in-web-dynpro-abap--part-ii-handling-viewelements:///people/thomas.szcs/blog/2006/01/03/dynamic-programming-in-web-dynpro-abap--part-ii-handling-viewelements<a href="/people/thomas.szcs/blog/2005/12/28/dynamic-programming-in-web-dynpro-abap--introduction-and-part-i-understanding-ui-elements:///people/thomas.szcs/blog/2005/12/28/dynamic-programming-in-web-dynpro-abap--introduction-and-part-i-understanding-ui-elements

Best regards,

Suresh