How can I traverse a tree item

It seems unable to do many things using tree item in forms 6i. For instance, how
can I traverse a tree, how to implement drag-drop function within it. Many intel-
ligent functions are hard to accomplish in a tree item without trigger when-mouse-
enter, when-mouse-leave, when-mouse-move. If some expert can give the resolution,
I'll be very thankful.

Touch the event, touch Edit in upper right corner of the Events Details panel shown, scroll up in the Edit panel shown, and touch Delete Event.

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How can we make H-Tree?

can anyone guide me how can we make H-Tree and how can we call module by using H-Tree?
waiting for prompt answer.
thanks in advance
sarah
Edited by: user652484 on Aug 2, 2009 3:43 AM
Edited by: user652484 on Aug 2, 2009 3:45 AM

Dear,
Creating a Hierarchical Tree based on database table required a table with self-joined column like scott's emp table where column empno refered by mgr, a Data Query with PRIOR clause and a procedure call from the Form Level When-New-Form-Instance trigger.
There are many ways to make Hierarchical Tree. I am describing one of them bellow. Please follow the steps:
01. Create the following table
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EMPLOYEE_ID NUMBER(4),
EMPLOYEE_NAME VARCHAR2(50),
MANAGER_ID NUMBER(4),
CONSTRAINT EMPLOYEE_PK PRIMARY KEY(EMPLOYEE_ID),
CONSTRAINT EMPLOYEE_FK FOREIGN KEY(MANAGER_ID)
REFERENCES EMPLOYEE(EMPLOYEE_ID)
02. Insert some data on it
03. Create a form module and name it HTREE_DEMO
04. Create a Data Block on this form and name it CONTROL.
05. Create a Hierarchical Tree Item on it and name it EMP_TREE. Hierarchical Tree must be single item on single block.
05. Write the following query on Data Query of the EMP_TREE Item
SELECT 1, LEVEL, EMPLOYEE_NAME, NULL, EMPLOYEE_ID
FROM EMPLOYEE
CONNECT BY PRIOR EMPLOYEE_ID = MANAGER_ID
START WITH MANAGER_ID IS NULL
06. Add the following line of code on the Form Level When-New-Form-Instance Trigger
FTREE.POPULATE_TREE('CONTROL.EMP_TREE);
07. Run the form
08. Enjoy!

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Cem777 wrote:
Hi Everyone,
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for these internal tables you can pass some Identifier for both tables.
in header file : IT_HEAD
IDENT   type char10,
BUKRS type BUKRS,
BUDAT type BUDAT, like
in header file :IT_ITEM
IDENT   type char10,
BUZEI type BUZEI,
BSCHL type BSCHL, like in item data
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10 -- 2345-- KSCHL value like all records
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or create
LOOP with IT_HEAD
table with IT_HEAD
table with IT_ITEM
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REPORT zdemo_alv_tree.
Demo program prepared for ****************
CLASS cl_gui_column_tree DEFINITION LOAD.
CLASS cl_gui_cfw DEFINITION LOAD.
DATA tree1 TYPE REF TO cl_gui_alv_tree_simple.
INCLUDE <icon>.
INCLUDE bcalv_simple_event_receiver.
DATA: gt_sflight      TYPE sflight OCCURS 0,   " Output-Table
      gt_fieldcatalog TYPE lvc_t_fcat,         " Field Catalog
      gt_sort         TYPE lvc_t_sort,         " Sorting Table
      ok_code         LIKE sy-ucomm.           " OK-Code
END-OF-SELECTION.
CALL SCREEN 100.
*&      Form BUILD_FIELDCATALOG
This subroutine is used to build the field catalog for the ALV list
FORM build_fieldcatalog.
get fieldcatalog
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
      i_structure_name = 'SFLIGHT'
    CHANGING
      ct_fieldcat      = gt_fieldcatalog.
change fieldcatalog
DATA: ls_fieldcatalog TYPE lvc_s_fcat.
LOOP AT gt_fieldcatalog INTO ls_fieldcatalog.
    CASE ls_fieldcatalog-fieldname.
      WHEN 'CARRID' OR 'CONNID' OR 'FLDATE'.
        ls_fieldcatalog-no_out = 'X'.
        ls_fieldcatalog-key    = ''.
      WHEN 'PRICE' OR 'SEATSOCC' OR 'SEATSMAX' OR 'PAYMENTSUM'.
        ls_fieldcatalog-do_sum = 'X'.
    ENDCASE.
    MODIFY gt_fieldcatalog FROM ls_fieldcatalog.
ENDLOOP.
ENDFORM.                               " BUILD_FIELDCATALOG
*&      Form BUILD_OUTTAB
Retrieving the data from the table and filling it in the output table
of the ALV list
FORM build_outtab.
SELECT * FROM sflight INTO TABLE gt_sflight.
ENDFORM.                               " BUILD_OUTTAB
*&      Form BUILD_SORT_TABLE
This subroutine is used to build the sort table or the sort criteria
FORM build_sort_table.
DATA ls_sort_wa TYPE lvc_s_sort.
create sort-table
ls_sort_wa-spos = 1.
ls_sort_wa-fieldname = 'CARRID'.
ls_sort_wa-up = 'X'.
ls_sort_wa-subtot = 'X'.
APPEND ls_sort_wa TO gt_sort.
ls_sort_wa-spos = 2.
ls_sort_wa-fieldname = 'CONNID'.
ls_sort_wa-up = 'X'.
ls_sort_wa-subtot = 'X'.
APPEND ls_sort_wa TO gt_sort.
ls_sort_wa-spos = 3.
ls_sort_wa-fieldname = 'FLDATE'.
ls_sort_wa-up = 'X'.
APPEND ls_sort_wa TO gt_sort.
ENDFORM.                               " BUILD_SORT_TABLE
*&      Module PBO OUTPUT
This subroutine is used to build the ALV Tree
MODULE pbo OUTPUT.
IF tree1 IS INITIAL.
    PERFORM init_tree.
ENDIF.
SET PF-STATUS 'ZSTATUS'.
ENDMODULE.                             " PBO OUTPUT
*&      Module PAI INPUT
This subroutine is used to handle the navigation on the screen
MODULE pai INPUT.
CASE ok_code.
    WHEN 'EXIT' OR 'BACK' OR 'CANC'.
      PERFORM exit_program.
    WHEN OTHERS.
      CALL METHOD cl_gui_cfw=>dispatch.
ENDCASE.
CLEAR ok_code.
ENDMODULE.                             " PAI INPUT
*&      Form exit_program
      free object and leave program
FORM exit_program.
CALL METHOD tree1->free.
LEAVE PROGRAM.
ENDFORM.                               " exit_program
*&      Form register_events
Handling the events in the ALV Tree control in backend
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.
define the events which will be passed to the backend
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_context_men_req.
APPEND l_event TO lt_events.
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_header_click.
APPEND l_event TO lt_events.
l_event-eventid = cl_gui_column_tree=>eventid_item_keypress.
APPEND l_event TO lt_events.
CALL METHOD tree1->set_registered_events
    EXPORTING
      events                    = lt_events
    EXCEPTIONS
      cntl_error                = 1
      cntl_system_error         = 2
      illegal_event_combination = 3.
set Handler
DATA: l_event_receiver TYPE REF TO lcl_tree_event_receiver.
CREATE OBJECT l_event_receiver.
SET HANDLER l_event_receiver->on_add_hierarchy_node
                                                        FOR tree1.
ENDFORM.                               " register_events
*&      Form build_header
      build table for header
FORM build_comment USING
      pt_list_commentary TYPE slis_t_listheader
      p_logo             TYPE sdydo_value.
DATA: ls_line TYPE slis_listheader.
LIST HEADING LINE: TYPE H
CLEAR ls_line.
ls_line-typ = 'H'.
LS_LINE-KEY: NOT USED FOR THIS TYPE
ls_line-info = 'ALV TREE DEMO for ****************'.
APPEND ls_line TO pt_list_commentary.
p_logo = 'ENJOYSAP_LOGO'.
ENDFORM.                    "build_comment
*&      Form init_tree
Building the ALV-Tree for the first time display
FORM init_tree.
PERFORM build_fieldcatalog.
PERFORM build_outtab.
PERFORM build_sort_table.
create container for alv-tree
DATA: l_tree_container_name(30) TYPE c,
        l_custom_container TYPE REF TO cl_gui_custom_container.
l_tree_container_name = 'TREE1'.
CREATE OBJECT l_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.
create tree control
CREATE OBJECT tree1
    EXPORTING
        i_parent              = l_custom_container
        i_node_selection_mode =
                              cl_gui_column_tree=>node_sel_mode_multiple
        i_item_selection      = 'X'
        i_no_html_header      = ''
        i_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.
create info-table for html-header
DATA: lt_list_commentary TYPE slis_t_listheader,
        l_logo             TYPE sdydo_value.
PERFORM build_comment USING
                 lt_list_commentary
                 l_logo.
repid for saving variants
DATA: ls_variant TYPE disvariant.
ls_variant-report = sy-repid.
register events
PERFORM register_events.
create hierarchy
CALL METHOD tree1->set_table_for_first_display
    EXPORTING
      it_list_commentary = lt_list_commentary
      i_logo             = l_logo
      i_background_id    = 'ALV_BACKGROUND'
      i_save             = 'A'
      is_variant         = ls_variant
    CHANGING
      it_sort            = gt_sort
      it_outtab          = gt_sflight
      it_fieldcatalog    = gt_fieldcatalog.
expand first level
CALL METHOD tree1->expand_tree
    EXPORTING
      i_level = 1.
optimize column-width
CALL METHOD tree1->column_optimize
    EXPORTING
      i_start_column = tree1->c_hierarchy_column_name
      i_end_column   = tree1->c_hierarchy_column_name.
ENDFORM.                    " init_tree

How can I traverse a tree item

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