Hello,
Im getting a frustrating problem' Access via 'NULL' object reference not possible ' when I try to close the popup box , I am assuming its something to do with either setting up my nodes or attributes, unfortunately i tried everything I could but nothing worked.
this is the part of the code action to generate a popup box, subscribe and assign the OK button an action
method ONACTIONADD_NAME .
Data: context_node type ref to if_wd_context_node.
data lv_action_view TYPE REF TO if_wd_view_controller.
DATA lv_title TYPE string.
DATA lo_nd_add_name TYPE REF TO if_wd_context_node.
DATA lo_el_add_name TYPE REF TO if_wd_context_element.
DATA ls_add_name TYPE wd_this->element_add_name.
data lo_window_manager type ref to if_wd_window_manager.
data lo_api_component type ref to if_wd_component.
data lo_window type ref to if_wd_window.
generate a popup box
lo_api_component = wd_comp_controller->wd_get_api( ).
lo_window_manager = lo_api_component->get_window_manager( ).
lo_window = lo_window_manager->create_window(
window_name = 'W_ADD_NAME'
title = 'Add a Tester'
close_in_any_case = abap_false
message_display_mode = if_wd_window=>co_msg_display_mode_selected
close_button = abap_true
button_kind = if_wd_window=>co_buttons_okcancel
message_type = if_wd_window=>co_msg_type_none
default_button = if_wd_window=>co_button_ok
).
Subscribe the action handler methods to the popup ok and cancel buttons
lv_action_view = wd_this->wd_get_api( ).
lo_window->subscribe_to_button_event(
button = if_wd_window=>co_button_ok
action_name = 'ON_OK_ADD_NAME'
action_view = lv_action_view
).
lo_window->open( ).
endmethod.
and this is the action where I have the issue of closing the popup box
DATA lo_nd_ui_manipulation TYPE REF TO if_wd_context_node.
DATA lo_nd_add_name TYPE REF TO if_wd_context_node.
DATA lo_el_add_name TYPE REF TO if_wd_context_element.
DATA lo_nd_sname TYPE REF TO if_wd_context_node.
DATA ls_add_name TYPE wd_this->element_add_name.
DATA lo_nd_sname_copy TYPE REF TO if_wd_context_node.
DATA lt_sname_copy TYPE wd_this->elements_sname_copy.
DATA lv_msg_text TYPE string.
DATA lv_param1 TYPE symsgv.
DATA lv_param2 TYPE symsgv.
DATA lv_param3 TYPE symsgv.
DATA lv_elements_count TYPE i.
data lo_window type ref to if_wd_window.
get message manager
data lo_api_controller type ref to if_wd_controller.
data lo_message_manager type ref to if_wd_message_manager.
Read the values user entered in add name popup
lo_nd_add_name = wd_context->get_child_node( name = wd_this->wdctx_add_name ).
lo_el_add_name = lo_nd_add_name->get_element( ).
lo_el_add_name->get_static_attributes(
IMPORTING
static_attributes = ls_add_name ).
IF ls_add_name IS INITIAL OR ls_add_name-first_name IS INITIAL.
display messages fill in the required field in the pop-up windows
lo_api_controller ?= wd_This->Wd_Get_Api( ).
CALL METHOD lo_api_controller->GET_MESSAGE_MANAGER
RECEIVING
MESSAGE_MANAGER = lo_message_manager.
CALL METHOD lo_message_manager->REPORT_T100_MESSAGE
EXPORTING
MSGID = '00'
MSGNO = 055
MSGTY = 'E' .
ELSE.
Check if the name is already present
lo_nd_sname_copy = wd_context->get_child_node( name = wd_this->wdctx_sname_copy ).
CHECK NOT lo_nd_sname_copy IS INITIAL.
CALL METHOD lo_nd_sname_copy->get_static_attributes_table
IMPORTING
table = lt_sname_copy.
READ TABLE lt_sname_copy WITH KEY first_name = ls_add_name-first_name TRANSPORTING NO FIELDS.
IF sy-subrc EQ 0.
If a same name exist, raise error message
lv_msg_text = 'name exist, please enter a different name'.
lo_api_controller ?= wd_This->Wd_Get_Api( ).
CALL METHOD lo_api_controller->GET_MESSAGE_MANAGER
RECEIVING
MESSAGE_MANAGER = lo_message_manager.
CALL METHOD lo_message_manager->REPORT_ERROR_MESSAGE
EXPORTING
MESSAGE_TEXT = lv_msg_text.
ELSE.
if the name doesnt exist
lo_nd_sname_copy = wd_context->get_child_node( name = wd_this->wdctx_sname_copy ).
CHECK NOT lo_nd_sname_copy IS INITIAL.
CALL METHOD lo_nd_sname_copy->get_static_attributes_table
IMPORTING
table = lt_sname_copy.
READ TABLE lt_sname_copy WITH KEY first_name = ls_add_name-first_name TRANSPORTING NO FIELDS.
IF the name doesnt exist , add name
lo_nd_sname = wd_context->get_child_node( name = wd_this->wdctx_sname ).
CHECK NOT lo_nd_sname IS INITIAL.
lo_nd_sname->bind_structure( new_item = ls_add_name set_initial_elements = abap_false ).
CLEAR lt_sname_copy.
CALL METHOD lo_nd_sname->get_static_attributes_table
IMPORTING
table = lt_sname_copy.
add the name to the local context
lo_nd_sname_copy->bind_table( lt_sname_copy ).
add the name to the shared data name context
lo_nd_sname->bind_table( lt_sname_copy ).
set the table's visible row property in order to show the added record
lv_elements_count = lo_nd_sname_copy->get_element_count( ).
lo_nd_ui_manipulation = wd_context->get_child_node( name = wd_this->wdctx_ui_manipulation ).
lo_nd_ui_manipulation->set_attribute( name = `VISIBLEROW` value = lv_elements_count ).
lv_param1 = ls_add_name-first_name.
lv_param2 = ls_add_name-last_name.
lv_param3 = ls_add_name-c_num.
display a successfull message
lo_api_controller ?= wd_This->Wd_Get_Api( ).
CALL METHOD lo_api_controller->GET_MESSAGE_MANAGER
RECEIVING
MESSAGE_MANAGER = lo_message_manager
.
report message
CALL METHOD lo_message_manager->REPORT_SUCCESS
EXPORTING
MESSAGE_TEXT = 'succesfully added'.
Enable/disable delete button based on lead selection
CALL METHOD wd_comp_controller->manage_delete_button .
Save the last action in the context, this data will be shown in the idr
CLEAR lv_msg_text.
lv_msg_text = wd_assist->if_wd_component_assistance~get_text( key = '014' ).
CONCATENATE lv_msg_text ls_add_name-first_name INTO lv_msg_text SEPARATED BY space.
lo_nd_ui_manipulation = wd_context->get_child_node( name = wd_this->wdctx_ui_manipulation ).
lo_nd_ui_manipulation->set_attribute( name = `IDR_LAST_ACTION` value = lv_msg_text ).
lo_window->close( ).
every time I add the lo_window->close( ). I get the Null error.
Thanks in advance
