SAP R/3 форум ABAP консультантов
Russian ABAP Developer's Club

Home - FAQ - Search - Memberlist - Usergroups - Profile - Log in to check your private messages - Register - Log in - English
Blogs - Weblogs News

Tree Reports



 
Post new topic   Reply to topic    Russian ABAP Developer's Club Forum Index -> ALV Grid / ALV Tree / ALV List
View previous topic :: View next topic  
Author Message
admin
Администратор
Администратор



Joined: 01 Sep 2007
Posts: 1639

PostPosted: Mon Sep 10, 2007 7:11 pm    Post subject: Tree Reports Reply with quote

STEP ONE – ADD THESE LINES OF CODE IN THE DECLARATION AREA

Code:
**** DECLARATION
DATA: BEGIN OF items OCCURS 100,
         id type sy-tabix,
         parent_id type sy-tabix,
         text(1000),
         symbol,
      END OF items,
      tabix_stack LIKE sy-tabix OCCURS 10 WITH HEADER LINE,
      items_show LIKE items OCCURS 100 WITH HEADER LINE.

DATA: parent_stack LIKE sy-tabix OCCURS 10 WITH HEADER LINE,
      t_parent     LIKE sy-tabix,
      current      LIKE sy-tabix.
INCLUDE <symbol>.
INCLUDE ZTREE_REPORT_INCLUDES.


STEP TWO – ADD THESE LINES OF CODE TO POPULATE THE INTERNAL TABLE
Code:
**** POPULATE DATA
REFRESH parent_stack. current = 0.
         parent_stack = 0. APPEND parent_stack.
LOOP AT itab_data.
  CASE itab_data-qualf.
    WHEN 1.    “New parent
              current = current + 1.
              PERFORM read_from_parent_stack CHANGING t_parent.
              parent_stack = current. APPEND parent_stack.
              PERFORM append_item USING current
                                        t_parent
                                        itab_xml_data.
    WHEN 2.    “End of current leg
              current = current + 1.
              PERFORM append_item USING current
                                        t_parent
                                        itab_xml_data.
              perform delete_parent_stack.
    WHEN 3.    “Same level
              current = current + 1.
              PERFORM read_from_parent_stack CHANGING t_parent.
              PERFORM append_item USING current
                                        t_parent
                                        itab_xml_data.
  ENDCASE.
ENDLOOP.


STEP THREE – ADD THESE LINES OF CODE TO PRINT THE REPORT

Code:
LOOP AT items WHERE parent_id = 0.
  MOVE-CORRESPONDING items TO items_show.
  items_show-symbol = '+'.
  APPEND items_show.
ENDLOOP.
PERFORM print_tree TABLES items_show.


STEP FOUR – ADD THESE LINES OF CODE TO EXPAND \ COLLAPSE THE TREE
Code:
* at line-selection - when the node is opened/closed or item double-clk
AT LINE-SELECTION.
  READ TABLE items WITH KEY parent_id = items_show-id. "see 'hide'
  IF sy-subrc = 0. "item has children - expand or collapse
    sy-lsind = 0.
    PERFORM expand_collapse USING items_show-id.
    PERFORM print_tree TABLES items_show.
  ELSE.            "item has NO children - perform some action
    READ TABLE items WITH KEY id = items_show-id.
    WRITE: 'Action performed on item "' NO-GAP, items-text NO-GAP,
           '", id.', items-id.
  ENDIF.


STEP FIVE – ADD THIS INCLUDE CODE
Code:
*----------------------------------------------------------------------*
*   INCLUDE ZTREE_REPORT_INCLUDES                                      *
*----------------------------------------------------------------------*
* form append_item
FORM append_item USING value(id) value(parent_id) value(text).
  items-id = id.
  items-parent_id = parent_id.
  items-text = text.
  APPEND items.
ENDFORM.                    " APPEND_ITEM

* form read_from_stack
FORM read_from_stack CHANGING tabix LIKE sy-tabix.
  DESCRIBE TABLE tabix_stack.
  CHECK sy-tfill NE 0.
  READ TABLE tabix_stack INDEX sy-tfill.
  tabix = tabix_stack.
  DELETE tabix_stack INDEX sy-tfill.
ENDFORM.

* form print tree
FORM print_tree TABLES items STRUCTURE items.
  DATA: v_tabix LIKE sy-tabix,
        start_tabix LIKE sy-tabix,
        v_level LIKE sy-tfill,
        v_offset TYPE i,
        v_id LIKE items-id,
        v_parent_id LIKE items-parent_id,
        v_parent_id_for_vline LIKE items-parent_id,
        v_prev_level TYPE i,
        v_items_count LIKE sy-tfill,
        v_vlines_string(200).
  CHECK NOT items[] IS INITIAL.
  SORT items BY parent_id id.
  READ TABLE items INDEX 1.
  v_parent_id = items-parent_id.
  start_tabix = 1.
  REFRESH tabix_stack.
  DO.
    LOOP AT items FROM start_tabix.
      v_tabix = start_tabix = sy-tabix.   "remember current index
      v_id = items-id.
      v_parent_id_for_vline = items-parent_id.
*     decrease level and exit loop if parent not the same as previous
      IF items-parent_id NE v_parent_id.
        PERFORM read_from_stack CHANGING start_tabix. "level = NoOfRecs
        READ TABLE items INDEX start_tabix.
        v_parent_id = items-parent_id.
        ADD 1 TO start_tabix.   "next loop starts from parent index + 1
*        clear vline
        IF v_level > 1.
          v_offset = 2 + ( v_level - 2 ) * 3.
          IF v_level = 1. v_offset = 1. ENDIF.
          v_vlines_string+v_offset = ' '.
        ENDIF.
        EXIT.
      ENDIF.
      v_parent_id = items-parent_id.
*     write item
      FORMAT COLOR OFF.
      DESCRIBE TABLE tabix_stack LINES v_level."level is no of StackRecs
      WRITE: / v_vlines_string.
      v_offset = v_level * 3.
      IF v_level NE 0.
        IF v_prev_level < v_level.
          WRITE: AT v_offset '|', / ''.
          WRITE: / v_vlines_string.
        ENDIF.
        v_offset = v_level * 3.
        WRITE AT v_offset '|--'.
      ENDIF.
      v_offset = v_offset + 3.
      CASE items-symbol.
        WHEN '+'.
          WRITE AT v_offset sym_plus_folder AS SYMBOL
                COLOR 4 INTENSIFIED HOTSPOT.
        WHEN '-'.
          WRITE AT v_offset sym_minus_folder AS SYMBOL
                COLOR 4 INTENSIFIED HOTSPOT.
        WHEN OTHERS. FORMAT COLOR 5.
      ENDCASE.
      WRITE: items-text.
      v_prev_level = v_level.
      HIDE: items-id.
      ADD 1 TO v_items_count.
      READ TABLE items WITH KEY parent_id = items-id.
*     increase level and exit loop if item has children
      IF sy-subrc = 0.
        start_tabix = sy-tabix.
        APPEND v_tabix TO tabix_stack.  "level is no of recs in stack
        v_parent_id = items-parent_id.
*        set vline
        v_tabix = v_tabix + 1.
        READ TABLE items INDEX v_tabix.
        v_offset = 2 + ( v_level - 1 ) * 3.
        IF v_level > 0.
          IF items-parent_id = v_parent_id_for_vline AND sy-subrc = 0.
            v_vlines_string+v_offset = '|'.
          ELSE.
            v_vlines_string+v_offset = ' '.
          ENDIF.
        ENDIF.
        EXIT.
      ENDIF.
*     at last - decrease level
      AT LAST.
*        clear vline
        IF v_level > 1.
          v_offset = 2 + ( v_level - 2 ) * 3.
          IF v_level = 1. v_offset = 1. ENDIF.
          v_vlines_string+v_offset = ' '.
        ENDIF.
        " next loop starts from parent index, not parent index + 1
        " because of different parents level will decrease anyway
        PERFORM read_from_stack CHANGING start_tabix.
        APPEND start_tabix TO tabix_stack. "must return index to stack
      ENDAT.
    ENDLOOP.
    DESCRIBE TABLE items.
    IF start_tabix > sy-tfill OR v_items_count >= sy-tfill.
      EXIT.
    ENDIF.
  ENDDO.
ENDFORM.

* form expand_collapse
FORM expand_collapse USING value(v_id).
  DATA: v_no_more_orphans,
        items_temp LIKE items OCCURS 100 WITH HEADER LINE.
  DELETE items_show WHERE parent_id = v_id. "try to collapse
  IF sy-subrc = 0.  "succesfull first collapse
    DO.            "cascade collapse - delete 'orphans' that are left
      REFRESH items_temp.
      MOVE items_show[] TO items_temp[].
      SORT items_temp BY id.
      v_no_more_orphans = 'X'.
      LOOP AT items_show WHERE parent_id NE ''.
        READ TABLE items_temp WITH KEY id = items_show-parent_id
                               BINARY SEARCH TRANSPORTING NO FIELDS.
        IF sy-subrc NE 0.     "no parent - it's an orphan
          CLEAR v_no_more_orphans.
          DELETE items_show.
        ENDIF.
      ENDLOOP.
      IF v_no_more_orphans = 'X'. EXIT. ENDIF.
    ENDDO.
    items_show-symbol = '+'.
    MODIFY items_show TRANSPORTING symbol WHERE id = v_id.
  ELSE.              "unsuccessfull collapse - expand
    items_show-symbol = '-'.
    MODIFY items_show TRANSPORTING symbol WHERE id = v_id.
    LOOP AT items WHERE parent_id = v_id.      "show children
      APPEND items TO items_show.
    ENDLOOP.
    LOOP AT items_show WHERE parent_id = v_id. "check grandchildren
      READ TABLE items WITH KEY parent_id = items_show-id.
      IF sy-subrc = 0.
        items_show-symbol = '+'.
      ELSE.
        items_show-symbol = ''.
      ENDIF.
      MODIFY items_show.
    ENDLOOP.
  ENDIF.
ENDFORM.

* form read_from_parent_stack
FORM read_from_parent_stack CHANGING tabix LIKE sy-tabix.
  DESCRIBE TABLE parent_stack.
  CHECK sy-tfill NE 0.
  READ TABLE parent_stack INDEX sy-tfill.
  tabix = parent_stack.
*  DELETE tabix_stack INDEX sy-tfill.
ENDFORM.

*&      Form  delete_parent_stack
*&---------------------------------------------------------------------*
form delete_parent_stack.
  DESCRIBE TABLE parent_stack.
  CHECK sy-tfill NE 0.
  DELETE parent_stack INDEX sy-tfill.
endform.                    " delete_parent_stack
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Russian ABAP Developer's Club Forum Index -> ALV Grid / ALV Tree / ALV List All times are GMT + 4 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All product names are trademarks of their respective companies. SAPNET.RU websites are in no way affiliated with SAP AG.
SAP, SAP R/3, R/3 software, mySAP, ABAP, BAPI, xApps, SAP NetWeaver and any other are registered trademarks of SAP AG.
Every effort is made to ensure content integrity. Use information on this site at your own risk.