ALV Tree Event Problem

Former Member — Fri, 02 Jan 2009 06:33:42 GMT

Dear all

I have developed Alv tree report with customer controller (Left Panel). In right panel i have inserted input box in the screen. While double click the node or child node, I need to pass node name to input box. I have written events also. Anyone help me

Whan i am double click the node PAI event is not calling

My coding part

----

TREE_EVENT_RECEIVER *

----

class tree_event_receiver definition.

public section.

methods on_doubleclick

for event ITEM_DOUBLE_CLICK of cl_gui_alv_tree

importing node_key fieldname.

ENDCLASS. "lcl_handler DEFINITION

----

CLASS tree_event_receiver IMPLEMENTATION

----

........ *

----

class tree_event_receiver implementation.

METHOD on_doubleclick.

first check if the node is a leaf.

data: lt_children type lvc_t_nkey.

CALL METHOD g_alv_tree->get_outtab_line

EXPORTING

i_node_key = node_key

IMPORTING

e_node_text = lv_E_NODE_TEXT

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.

TXT_PROJECT = lv_E_NODE_TEXT.

ENDMETHOD. "on_doubleclick

&----

*& Module STATUS_0100 OUTPUT

&----

text

----

module STATUS_0100 output.

SET PF-STATUS 'MAIN100'.

SET TITLEBAR 'MAINTITLE'.

IF g_alv_tree IS INITIAL.

PERFORM init_tree.

ENDIF.

endmodule. " STATUS_0100 OUTPUT

&----

*& Module USER_COMMAND_0100 INPUT

&----

text

----

module USER_COMMAND_0100 input.

save_ok = ok_code.

CLEAR ok_code.

data: return_code type i.

CALL METHOD CL_GUI_CFW=>DISPATCH

importing return_code = return_code.

if return_code <> cl_gui_cfw=>rc_noevent.

" a control event occured => exit PAI

clear ok_code.

exit.

endif.

CASE save_ok.

WHEN 'EXIT' OR 'BACK' OR 'CANC'.

LEAVE TO SCREEN 0.

WHEN OTHERS.

CALL METHOD cl_gui_cfw=>dispatch.

ENDCASE.

CALL METHOD cl_gui_cfw=>flush.

endmodule.

START-OF-SELECTION.

CALL SCREEN 100.

&----

*& Form INIT_TREE

&----

text

----

--> p1 text
<-- p2 text

----

form INIT_TREE .

create container for alv-tree

DATA: l_tree_container_name(30) TYPE c.

l_tree_container_name = 'TREE_CONTAINER'.

CREATE OBJECT g_custom_container

EXPORTING

container_name = l_tree_container_name

EXCEPTIONS

cntl_error = 1

cntl_system_error = 2

create_error = 3

lifetime_error = 4

lifetime_dynpro_dynpro_link = 5.

IF sy-subrc <> 0.

MESSAGE x208(00) WITH 'ERROR'(100).

ENDIF.

create tree control

CREATE OBJECT g_alv_tree

EXPORTING

parent = g_custom_container

node_selection_mode = cl_gui_column_tree=>node_sel_mode_single

item_selection = 'X'

no_html_header = 'X'

no_toolbar = ''

EXCEPTIONS

cntl_error = 1

cntl_system_error = 2

create_error = 3

lifetime_error = 4

illegal_node_selection_mode = 5

failed = 6

illegal_column_name = 7.

IF sy-subrc <> 0.

MESSAGE x208(00) WITH 'ERROR'. "#EC NOTEXT

ENDIF.

DATA l_hierarchy_header TYPE treev_hhdr.

PERFORM build_hierarchy_header CHANGING l_hierarchy_header.

Hide columns and sum up values initially using the fieldcatalog

PERFORM build_fieldcatalog.

DATA: ls_variant TYPE disvariant.

ls_variant-report = sy-repid.

CALL METHOD g_alv_tree->set_table_for_first_display

EXPORTING

i_structure_name = 'YSTR_PROJECTS'

is_hierarchy_header = l_hierarchy_header

i_save = 'A'

is_variant = ls_variant

CHANGING

it_outtab = LT_PROJECT1 "table must be empty !

it_fieldcatalog = gt_fieldcatalog.

Create hierarchy (nodes and leaves)

PERFORM create_hierarchy.

perform register_events.

CALL METHOD g_alv_tree->update_calculations.
Send data to frontend.

CALL METHOD g_alv_tree->frontend_update.

endform. " INIT_TREE

&----

*& Form REGISTER_EVENTS

&----

text

----

--> p1 text
<-- p2 text

----

form REGISTER_EVENTS .

data: lt_events type cntl_simple_events,

l_event type cntl_simple_event.

l_event-eventid = cl_gui_column_tree=>eventid_expand_no_children.

append l_event to lt_events.

l_event-eventid = cl_gui_column_tree=>EVENTID_ITEM_DOUBLE_CLICK.

append L_EVENT to lt_events.

l_event-eventid = cl_gui_column_tree=>eventid_header_context_men_req.

append l_event to lt_events.

l_event-eventid = cl_gui_column_tree=>eventid_node_context_menu_req.

append l_event to lt_events.

l_event-eventid = cl_gui_column_tree=>eventid_item_context_menu_req.

append l_event to lt_events.

l_event-eventid = cl_gui_column_tree=>eventid_header_click.

append L_EVENT to lt_events.

l_event-eventid = cl_gui_column_tree=>eventid_item_keypress.

append L_EVENT to lt_events.

set Handler

data: l_event_receiver type ref to tree_event_receiver.

create object l_event_receiver.

set handler l_event_receiver->on_doubleclick for g_alv_tree.

call method g_alv_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'. "#EC NOTEXT

endif.

endform. " REGISTER_EVENTS

Re: ALV Tree Event Problem

Former Member — Fri, 02 Jan 2009 06:54:41 GMT

Hi all

Any one help me for this tread

Re: ALV Tree Event Problem

Former Member — Fri, 02 Jan 2009 06:56:51 GMT

Hi,

In ur PAI module ur Clear the ok_code,Remove that one it wil work properly..

&----

*& Module USER_COMMAND_0100 INPUT

&----

text

module USER_COMMAND_0100 input.

save_ok = ok_code.

CLEAR ok_code.

data: return_code type i.

CALL METHOD CL_GUI_CFW=>DISPATCH

importing return_code = return_code.

if return_code cl_gui_cfw=>rc_noevent.

" a control event occured => exit PAI

clear ok_code.

exit.

endif.

CASE save_ok.

WHEN 'EXIT' OR 'BACK' OR 'CANC'.

LEAVE TO SCREEN 0.

WHEN OTHERS.

CALL METHOD cl_gui_cfw=>dispatch.

ENDCASE.

Clear ok_code

> use here finally

CALL METHOD cl_gui_cfw=>flush.

endmodule.

Edited by: Upender Verma on Jan 2, 2009 7:57 AM

Edited by: Upender Verma on Jan 2, 2009 7:58 AM

Re: ALV Tree Event Problem

Former Member — Fri, 02 Jan 2009 06:58:54 GMT

hi,

have a look at transaction SE83 in folder SAP Technology -> Controls -> Tree Controls.

hope it helps.

thanks

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