topic Re: ALV Tree - Event Handler in Application Development and Automation Discussions

ALV Tree - Event Handler

Former Member — Sun, 19 Nov 2006 08:55:53 GMT

Hi All,

I amd currently developing an ALV tree program to capture the hierarchy of functional location. I managed to display the hierarchy in ALV Tree using cl_gui_column_tree.

Now, i am working on double clicking the functional location and it will bring me to tcode IL03. But, it seems like i cannot capture of the field value clicked. Below are my source code. Can anyone pls help me on this? Thank you very much

&----

*& Form register_events

&----

text

----

--> p1 text
<-- p2 text

----

FORM register_events .

Define the events which will be passed to the backend

DATA: lt_events TYPE cntl_simple_events,

l_event TYPE cntl_simple_event.

CALL METHOD gd_tree->get_registered_events

IMPORTING

events = lt_events.

l_event-eventid = cl_gui_column_tree=>eventid_item_double_click.

l_event-appl_event = 'X'.

APPEND l_event TO lt_events.

CALL METHOD gd_tree->set_registered_events

EXPORTING

events = lt_events

EXCEPTIONS

cntl_error = 1

cntl_system_error = 2

illegal_event_combination = 3.

IF sy-subrc <> 0.

MESSAGE x208(00) WITH 'ERROR'.

ENDIF.

Set Handler

DATA: l_event_receiver TYPE REF TO lcl_tree_event_receiver.

CREATE OBJECT l_event_receiver.

SET HANDLER l_event_receiver->handle_item_double_click FOR gd_tree.

ENDFORM. " register_events

CLASS lcl_tree_event_receiver DEFINITION.

PUBLIC SECTION.

METHODS handle_item_double_click

FOR EVENT item_double_click OF cl_gui_alv_tree

IMPORTING node_key

fieldname.

ENDCLASS. "lcl_tree_event_receiver DEFINITION

CLASS lcl_tree_event_receiver IMPLEMENTATION.

METHOD handle_item_double_click.

DATA: lt_selected_nodes TYPE lvc_nkey,

lt_fieldname TYPE lvc_fname.

Determine which line is selected

CALL METHOD gd_tree->get_selected_item

IMPORTING

e_selected_node = lt_selected_nodes

e_fieldname = lt_fieldname.

CALL METHOD cl_gui_cfw=>flush.

SET PARAMETER ID 'IFL' FIELD lt_fieldname.

SET PARAMETER ID 'ISR' FIELD 'MOB01'.

CALL TRANSACTION 'IL03' AND SKIP FIRST SCREEN.

ENDMETHOD. "handle_item_double_click

ENDCLASS. "lcl_tree_event_receiver IMPLEMENTATION

Re: ALV Tree - Event Handler

Former Member — Sun, 19 Nov 2006 09:35:20 GMT

One of the parameters of the event double click is the node_key (IMPORTING node_key), so i guess you should be able to read the data and figure what row has been clicked, right?

Using that you should be able to navigate to IL03.

Regards,

Ravi

Note - Please mark all the helpful answers

Re: ALV Tree - Event Handler

uwe_schieferstein — Sun, 19 Nov 2006 20:44:05 GMT

Hello Goh

Based on your coding you are using CL_GUI_ALV_TREE instead of CL_GUI_COLUMN_TREE.

Calling method get_selected_item within your event handler method is unnecessary because these data are already provided by the event interface.

[code]METHOD handle_item_double_click.

DATA: lt_selected_nodes TYPE lvc_nkey,

lt_fieldname TYPE lvc_fname.

*$Comment: unnecessary because these data are already provided

by the event interface (IMPORTING nodekey fieldname).

Determine which line is selected

**CALL METHOD gd_tree->get_selected_item

**IMPORTING

**e_selected_node = lt_selected_nodes

**e_fieldname = lt_fieldname.

...

ENDMETHOD. "handle_item_double_click[/code]

The following sample is based in report BCALV_TREE_04 but can be simply applied to your application:

[code] METHOD handle_item_double_click.

define local data

DATA:

ls_outtab TYPE sflight.

FIELD-SYMBOLS:

<ld_fld> TYPE ANY.

Call this method to get the values of the selected tree line

CALL METHOD g_alv_tree->get_outtab_line

EXPORTING

i_node_key = node_key

IMPORTING

e_outtab_line = ls_outtab

E_NODE_TEXT =
et_item_layout =
ES_NODE_LAYOUT =

EXCEPTIONS

node_not_found = 1

OTHERS = 2.

IF sy-subrc <> 0.

MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.

ENDIF.

ASSIGN COMPONENT fieldname OF STRUCTURE ls_outtab TO <ld_fld>.

IF ( <ld_fld> IS ASSIGNED ).

... Call transaction with selected (item) value.

ENDIF.

ENDMETHOD. "handle_item_double_click[/code]

The ASSIGN statement will work if no item of the hierarchy part is selected.

Regards

Uwe

Re: ALV Tree - Event Handler

Former Member — Mon, 20 Nov 2006 02:51:30 GMT

Thanks for all your help