Tree structure visualisation methods

I am still working with the BTree .
I would like some help on how to represent the tree structure on the screen .
I have used the Breadth_first method and saved all the data into an Array , But I am lost on how to represent the tree on the screen.
Thanks
B747

Define your own javax.swing.tree.TreeModel with your B-Tree (is it a b-tree or a binary tree?) as the data source. Then you can show the tree in a swing frame using JTree.
Talden

Similar Messages

How to get Text for nodes in Tree Structure

Hi Friends,
How to get Text for nodes in Tree Structure
REPORT YFIIN_REP_TREE_STRUCTURE no standard page heading.
                   I N I T I A L I Z A T I O N
INITIALIZATION.
AUTHORITY-CHECK OBJECT 'ZPRCHK_NEW' :
                  ID 'YFIINICD' FIELD SY-TCODE.
IF SY-SUBRC NE 0.
    MESSAGE I000(yFI02) with SY-TCODE .
    LEAVE PROGRAM.
ENDIF.
class screen_init definition create private.
Public section
public section.
    class-methods init_screen.
    methods constructor.
Private section
private section.
    data: container1 type ref to cl_gui_custom_container,
          container2 type ref to cl_gui_custom_container,
          tree type ref to cl_gui_simple_tree.
    methods: fill_tree.
endclass.
Class for Handling Events
class screen_handler definition.
Public section
public section.
    methods: constructor importing container
               type ref to cl_gui_custom_container,
             handle_node_double_click
               for event node_double_click
               of cl_gui_simple_tree
               importing node_key .
Private section
private section.
endclass.
*&                        Classes implementation
class screen_init implementation.
*&                        Method INIT_SCREEN
method init_screen.
    data screen type ref to screen_init.
    create object screen.
endmethod.
*&                        Method CONSTRUCTOR
method constructor.
    data: events type cntl_simple_events,
          event like line of events,
          event_handler type ref to screen_handler.
    create object: container1 exporting container_name = 'CUSTOM_1',
                   tree exporting parent = container1
                     node_selection_mode =
            cl_gui_simple_tree=>node_sel_mode_multiple.
    create object: container2 exporting container_name = 'CUSTOM_2',
    event_handler exporting container = container2.
event-eventid = cl_gui_simple_tree=>eventid_node_double_click.
    event-appl_event = ' '.   "system event, does not trigger PAI
    append event to events.
    call method tree->set_registered_events
         exporting events = events.
    set handler event_handler->handle_node_double_click for tree.
     call method: me->fill_tree.
endmethod.
*&                        Method FILL_TREE
method fill_tree.
    data: node_table type table of abdemonode,
          node type abdemonode.
types:    begin of tree_node,
          folder(50) type c,
          tcode(60) type c,
          tcode1(60) type c,
          tcode2(60) type c,
          text(60) type c,
          text1(60) type c,
          text2(60) type c,
          end of tree_node.
data: wa_tree_node type tree_node,
            t_tree_node type table of tree_node.
wa_tree_node-folder = text-001.
wa_tree_node-tcode = text-002.
wa_tree_node-text = 'Creditors ageing'.
wa_tree_node-tcode1 = text-003.
wa_tree_node-text1 = 'GR/IR aging'.
wa_tree_node-tcode2 = text-004.
wa_tree_node-text2 = 'Bank Balance'.
append wa_tree_node to t_tree_node.
clear wa_tree_node .
wa_tree_node-folder = text-005.
wa_tree_node-tcode = text-006.
wa_tree_node-text = 'Creditors ageing'.
wa_tree_node-tcode1 = text-007.
wa_tree_node-text1 = 'Creditors ageing'.
wa_tree_node-tcode2 = text-008.
wa_tree_node-text2 = 'Creditors ageing'.
append wa_tree_node to t_tree_node.
clear wa_tree_node .
wa_tree_node-folder = text-009.
wa_tree_node-tcode = text-010.
wa_tree_node-text = 'Creditors ageing'.
wa_tree_node-tcode1 = text-011.
wa_tree_node-text1 = 'Creditors ageing'.
wa_tree_node-tcode2 = text-012.
wa_tree_node-text2 = 'Creditors ageing'.
append wa_tree_node to t_tree_node.
clear wa_tree_node .
node-hidden = ' '.                 " All nodes are visible,
    node-disabled = ' '.               " selectable,
    node-isfolder = 'X'.                                    " a folder,
    node-expander = ' '.               " have no '+' sign forexpansion.
    loop at t_tree_node into wa_tree_node.
      at new folder.
        node-isfolder = 'X'.                      " a folder,
        node-node_key = wa_tree_node-folder.
               clear node-relatkey.
        clear node-relatship.
        node-text = wa_tree_node-folder.
        node-n_image =   ' '.
        node-exp_image = ' '.
        append node to node_table.
      endat.
     at new tcode .
        node-isfolder = ' '.                          " a folder,
        node-n_image =   '@CS@'.       "AV is the internal code
        node-exp_image = '@CS@'.       "for an airplane icon
        node-node_key = wa_tree_node-tcode.
         node-text = wa_tree_node-text .
                 node-relatkey = wa_tree_node-folder.
        node-relatship = cl_gui_simple_tree=>relat_last_child.
      endat.
      append node to node_table.
    at new tcode1 .
        node-isfolder = ' '.                          " a folder,
        node-n_image =   '@CS@'.       "AV is the internal code
        node-exp_image = '@CS@'.       "for an airplane icon
        node-node_key = wa_tree_node-tcode1.
                 node-relatkey = wa_tree_node-folder.
        node-relatship = cl_gui_simple_tree=>relat_last_child.
          node-text = wa_tree_node-text1.
     endat.
      append node to node_table.
       at new tcode2 .
        node-isfolder = ' '.                          " a folder,
        node-n_image =   '@CS@'.       "AV is the internal code
        node-exp_image = '@CS@'.       "for an airplane icon
        node-node_key = wa_tree_node-tcode2.
                 node-relatkey = wa_tree_node-folder.
        node-relatship = cl_gui_simple_tree=>relat_last_child.
        node-text = wa_tree_node-text2.
     endat.
      append node to node_table.
    endloop.
    call method tree->add_nodes
         exporting table_structure_name = 'ABDEMONODE'
                   node_table = node_table.
endmethod.
endclass.
*&                        Class implementation
class screen_handler implementation.
*&                        Method CONSTRUCTOR
method constructor.
   create object: HTML_VIEWER exporting PARENT = CONTAINER,
                  LIST_VIEWER exporting I_PARENT = CONTAINER.
endmethod.
*&                 Method HANDLE_NODE_DOUBLE_CLICK
method handle_node_double_click.
case node_key(12).
when 'Creditors'.
submit YFIIN_REP_CREADITORS_AGING via selection-screen and return.
when 'Vendor'.
submit YFIIN_REP_VENDOR_OUTSTANDING via selection-screen and return.
when 'Customer'.
submit YFIIN_REP_CUSTOMER_OUTSTANDING via selection-screen and
return.
when 'GR/IR'.
submit YFIIN_REP_GRIR_AGING via selection-screen and return.
when 'Acc_Doc_List'.
submit YFIIN_REP_ACCOUNTINGDOCLIST via selection-screen and return.
when 'Bank Bal'.
submit YFIIN_REP_BANKBALANCE via selection-screen and return.
when 'Ven_Cus_Dtl'.
submit YFIIN_REP_VENDORCUST_DETAIL via selection-screen and return.
when 'G/L_Open_Bal'.
submit YFIIN_REP_OPENINGBALANCE via selection-screen and return.
when 'Usr_Authn'.
submit YFIIN_REP_USERAUTHRIZATION via selection-screen and return.
endcase.
endmethod.
endclass.
Program execution ************************************************
load-of-program.
call screen 9001.
at selection-screen.
Dialog Modules PBO
*&      Module STATUS_9001 OUTPUT
      text
module status_9001 output.
set pf-status 'SCREEN_9001'.
set titlebar 'TIT_9001'.
call method screen_init=>init_screen.
endmodule.                 " STATUS_9001 OUTPUT
Dialog Modules PAI
*&      Module USER_COMMAND_9001 INPUT
      text
module user_command_9001 input.
endmodule.                 " USER_COMMAND_9001 INPUT
*&      Module exit_9001 INPUT
      text
module exit_9001 input.
case sy-ucomm.
when 'EXIT'.
set screen 0.
endcase.
endmodule.
        exit_9001 INPUT

you can read the table node_table with nody key value which imports when docubble click the the tree node (Double clifk event).
Regards,
Gopi .
Reward points if helpfull.

How can I create a Tree Structure in java ??

Hi,
I want to create a tree structure(objects hierarchy) using java language. Is there any API method for this ?
Can any one please give me a hint or suggestion how I can do this ??
Thanks for the help in advance.

Do you mean graphically?
You can use a TreeSet or TreeMap if you just want to use tree structures.
Kaj

How to get the folder name of selected subitem in tree structure?

Hi All,
           I created a tree structure like below.
         ->Folder1-- 1
                          2
                          3
        ->Folder2-----1
                           2
                           3
                i.e i have two folders & each folder having the values like above.Now i want to perform some action by clicking on the any of the values.Suppose if i click value 2,i want to do some action.the actions need to perform is varies from floder to to folder.
        So How can i get the folder name of clicked Value?
Regards,
Ravi

Hi Kumar ,
the below code should help you.
Register the below action for the leaf node for which u need the subfolder's name above it.
Worked fine in my system ...hope it does in ur scenario too
method ONACTIONGET_PATH .
data : lr_element TYPE REF TO if_wd_context_element,
         lr_node TYPE REF TO if_wd_context_node,
         ls_path type string,
         ls_path_node TYPE string,
         lt_string type TABLE OF string,
         l_lines type i,
         l_lines_1 TYPE i.
lr_element = wdevent->get_context_element( 'CONTEXT_ELEMENT' ).
**-> getting the path of the node/leaf
*which u had clicked and from that getting the node above it
ls_path = lr_element->get_path( ).
SPLIT ls_path at '.' into table lt_string.
-> remove the first 2 entries as they will contain the view name
DELETE lt_string FROM 1 to 2.
l_lines = LINES( lt_String ).
l_lines_1 = l_lines - 1.
-> remove the last 2 entries as they will contain the element in the path
DELETE lt_string from l_lines_1 to l_lines.
LOOP AT lt_string into ls_path.
    CONCATENATE LINES OF LT_STRING into ls_path_node SEPARATED BY '.'.
ENDLOOP.
**-> getting access to the node above the leaf element
LR_NODE = WD_CONTEXT->PATH_GET_NODE( path = ls_path_node ).
lr_element = lr_node->get_element( ).
**-> Getting the name of the folder...
*here path is the attribute in my context which stores the name of the folder
lr_element->get_attribute( EXPORTING name = 'PATH' IMPORTING value = ls_path ).
endmethod.

How to populate Tree structure from BAPI while tree grows or shrinks

Hi All
Currently I am populating the tree structure from BAPI based on the HLevel (Hierarchy Level) parameter, but when ever insertion and deletion happens in the tree at any level in the UI and at the same time i am updating these tree node values with HLevel value(example : 1 is first level , 2 is second level, 3 is third level etc) updating successfully& correctly into the BAPI, no issues.
Once it is updated into the BAPI, next time when i refreshed the UI then i am not populating the tree structure correctly from BAPI with updated new nodes based on the HLevel. when tree struture grows or shrinks in the BAPI after updating into BAPI from UI then i am not populating the tree sturcture correctly based on the HLevel value from the BAPI.
Please let me know any sample code how to populate tree structure correctly when tree structure grows or shrinks based on the HLevel value ( Hierarchy Level , for example : 1 is level , 2 is 2nd level , 3 is third level nodes etc)
anybody helps in this regard with sample code on the populating tree tructure then it would be great help to me.
Thanks in advance
Regards
Kalki Reddy
Edited by: KalkiReddy on Nov 29, 2009 3:48 PM

Bapi output node:
Value | Text | HLevel
01 | A | 1
0101 | AA | 2
010101 | AAA | 3
01010B | AAB | 3
0102 | AB | 2
02 | B | 1
0201 | BA | 2
This code is used to build the tree in wdDoInit method
 IE_T_CatalogueNode catalogueNode = wdContext.nodeE_T_Catalogue();
 int size = catalogueNode.size();
 ICatalogoElement level1elem = null;
 for (int i = 0; i < size; i ++)
 IE_T_CatalogueElement catalogueElem = catalogueNode.getE_T_CatalogueElementAt(i);
 if (catalogueElem.getLevel().equals("1"))
 // 1 Livello
 level1elem = wdContext.createCatalogoElement();
 level1elem.setKATALOGART_CODE(catalogueElem.getKatalogart());
 level1elem.setCODEGRUPPE_CODE(catalogueElem.getCodegruppe());
 level1elem.setCODE(catalogueElem.getCode());
 level1elem.setCODE_DESCR(catalogueElem.getKatalogart_Descr());
 level1elem.setDESCR(catalogueElem.getKatalogart_Descr());
 wdContext.nodeCatalogo().addElement(level1elem);
 for (int j = i + 1; j < size; j ++)
 IE_T_CatalogueElement catalogueElem2level =
 catalogueNode.getE_T_CatalogueElementAt( j );
 String level2 = catalogueElem2level.getLevel();
 if (level2.equals("2"))
 ICatalogoElement level2elem = level1elem.nodeChild().createCatalogoElement();
 level2elem.setKATALOGART_CODE(catalogueElem2level.getKatalogart());
 level2elem.setCODEGRUPPE_CODE(catalogueElem2level.getCodegruppe());
 level2elem.setCODE(catalogueElem2level.getCode());
 level2elem.setCODE_DESCR(catalogueElem2level.getCodegruppe_Descr());
 level2elem.setDESCR(catalogueElem2level.getCodegruppe_Descr());
 level1elem.nodeChild().addElement(level2elem);
 for (int k = j + 1; k < size; k ++)
 IE_T_CatalogueElement catalogueElem3level =
 catalogueNode.getE_T_CatalogueElementAt( k );
 String level3 = catalogueElem3level.getLevel();
 if (level3.equals("3"))
 ICatalogoElement level3elem = level2elem.nodeChild().createCatalogoElement();
 level3elem.setKATALOGART_CODE(catalogueElem3level.getKatalogart());
 level3elem.setCODEGRUPPE_CODE(catalogueElem3level.getCodegruppe());
 level3elem.setCODE(catalogueElem3level.getCode());
 level3elem.setCODE_DESCR(catalogueElem3level.getCode_Descr());
 level3elem.setDESCR(catalogueElem3level.getCode_Descr());
 level2elem.nodeChild().addElement(level3elem);
Damiano

Listing File Hierarchy in console using a Tree structure

first off i'm a college student. i'm not that good at java... we got this CA in class and try as i might i just can't get my head around it
i was wondering if someone who know a bit more about java then i do would point me in the right direction, were i'm going wrong in my code
i have to list out sub-files and sub-directorys of a folder (i.e. C:/test) to console using tree structure
like this
startingdir
dir1 //subfolder of startingdir
dir11 //subfolder of dir1
dir111 //subfolder of dir11
dir12 //subfolder of dir1
file1A // document on dir1
dir2 //subfolder of startingdir
Tree.java
import java.util.Iterator;
import java.util.LinkedList;
import java.util.ListIterator;
import java.util.NoSuchElementException;
import java.util.Deque;
public class Tree<E> {
 // Each Tree object is an unordered tree whose
 // elements are arbitrary objects of type E.
 // This tree is represented by a reference to its root node (root), which
 // is null if the tree is empty. Each tree node contains a link to its
 // parent and a LinkedList of child nodes
 private Node root;
 //////////// Constructor ////////////
 public Tree () {
 // Construct a tree, initially empty.
 root = null;
 //////////// Accessors ////////////
 public boolean isEmpty () {
 // Return true is and only if this tree is empty.
 return (root == null);
 public Node root () {
 // Return the root node of this tree, or null if this tree is empty.
 return root;
 public Node parent (Node node) {
 // Return the parent of node in this tree, or null if node is the root node.
 return node.parent;
 public void makeRoot (E elem) {
 // Make this tree consist of just a root node containing element elem.
 root = new Node(elem);
 public Node addChild (Node node, E elem) {
 // Add a new node containing element elem as a child of node in this
 // tree. The new node has no children of its own. Return the node
 // just added.
 Node newChild = new Node(elem);
 newChild.parent = node;
 node.children.addLast(newChild);
 return newChild;
 public E element (Node node) {
 return node.getElement();
 //////////// Iterators ////////////
 public Iterator childrenIterator (Node node) {
 return node.children.iterator();
 public Iterator nodesPreOrder () {
 // Return an iterator that visits all nodes of this tree, with a pre-order
 // traversal.
 return new Tree.PreOrderIterator();
 //////////// Inner classes ////////////
 public class Node {
 // Each Tree.Node object is a node of an
 // unordered tree, and contains a single element.
 // This tree node consists of an element (element),
 // a link to its parent
 // and a LinkedList of its children
 private E element;
 private Node parent;
 private LinkedList<Node> children;
 private Node (E elem) {
 // Construct a tree node, containing element elem, that has no
 // children and no parent.
 this.element = elem;
 this.parent = null;
 children = new LinkedList<Node>();
 public E getElement () {
 // Return the element contained in this node.
 return this.element;
 public String toString () {
 // Convert this tree node and all its children to a string.
 String children = "";
 // write code here to add all children
 return element.toString() + children;
 public void setElement (E elem) {
 // Change the element contained in this node to be elem.
 this.element = elem;
 public class PreOrderIterator implements Iterator {
 private Deque<Node> track; //Java recommends using Deque rather
 // than Stack. This is used to store sequence of nomempty subtrees still
 //to be visited
 private PreOrderIterator () {
 track = new LinkedList();
 if (root != null)
 track.addFirst(root);
 public boolean hasNext () {
 return (! track.isEmpty());
 public E next () {
 Node place = track.removeFirst();
 //stack the children in reverse order
 if (!place.children.isEmpty()) {
 int size = place.children.size(); //number of children
 ListIterator<Node> lIter =
 place.children.listIterator(size); //start iterator at last child
 while (lIter.hasPrevious()) {
 Node element = lIter.previous();
 track.addFirst(element);
 return place.element;
 public void remove () {
 throw new UnsupportedOperationException();
 FileHierarchy.java
import java.io.File;
import java.util.Iterator;
public class FileHierarchy {
 // Each FileHierarchy object describes a hierarchical collection of
 // documents and folders, in which a folder may contain any number of
 // documents and other folders. Within a given folder, all documents and
 // folders have different names.
 // This file hierarchy is represented by a tree, fileTree, whose elements
 // are Descriptor objects.
 private Tree fileTree;
 //////////// Constructor ////////////
 public FileHierarchy (String startingDir, int level) {
 // Construct a file hierarchy with level levels, starting at
 // startingDir
 // Can initially ignore level and construct as many levels as exist
 fileTree = new Tree();
 Descriptor descr = new Descriptor(startingDir, true);
 fileTree.makeRoot(descr);
 int currentLevel = 0;
 int maxLevel = level;
 addSubDirs(fileTree.root(), currentLevel, maxLevel);
 //////////// File hierarchy operations ////////////
 private void addSubDirs(Tree.Node currentNode, int currentLevel,
 int maxLevel) {
 // get name of directory in currentNode
 // then find its subdirectories (can add files later)
 // for each subdirectory:
 // add it to children of currentNode - call addChild method of Tree
 // call this method recursively on each child node representing a subdir
 // can initially ignore currentLevel and maxLevel
 Descriptor descr = (Descriptor) currentNode.getElement();
 File f = new File(descr.name);
 File[] list = f.listFiles();
 for (int i = 0; i < list.length; ++i) {
 if (list.isDirectory()) {
File[] listx = null;
fileTree.addChild(currentNode, i);
if (list[i].list().length != 0) {
listx = list[1].listFiles();
addSubDirs(currentNode,i,1);
} else if (list[i].isFile()) {
fileTree.addChild(currentNode, i);
// The following code is sample code to illustrate how File class is
// used to get a list of subdirectories from a starting directory
// list now contains subdirs and files
// contained in dir descr.name
////////// Inner class for document/folder descriptors. //////////
private static class Descriptor {
// Each Descriptor object describes a document or folder.
private String name;
private boolean isFolder;
private Descriptor (String name, boolean isFolder) {
this.name = name;
this.isFolder = isFolder;
FileHierarchyTest.javapublic class FileHierarchyTest {
private static Tree fileTree;
public static void main(String[] args) {
FileHierarchy test = new FileHierarchy ("//test", 1);
System.out.println(test.toString());

Denis,
Do you have [red hair|http://www.dennisthemenace.com/]? ;-)
My advise with the tree structure is pretty short and sweet... make each node remember
1. it's parent
2. it's children
That's how the file system (inode) actually works.
<quote>
The exact reasoning for designating these as "i" nodes is unsure. When asked, Unix pioneer Dennis Ritchie replied:[citation needed]
In truth, I don't know either. It was just a term that we started to use. "Index" is my best guess, because of the
slightly unusual file system structure that stored the access information of files as a flat array on the disk, with all
the hierarchical directory information living aside from this. Thus the i-number is an index in this array, the
i-node is the selected element of the array. (The "i-" notation was used in the 1st edition manual; its hyphen
became gradually dropped).</quote>

Tree Structure - Is it possible to Open a Pop up/external window on select

Is it possible to Open a Pop up/external window on select of any Leafe node or a parent node?
My requirement is to create a webdynpro screen which depicts the transaction :
ooqa in sap R/3.
Is it possible to do that in tree structure?
Thanks & Regards,
Sirisha.RS

Hi Ayyaparaj,
Thanks for ur reply.
but i cant use a table here. I just need a tree structure..
I guess Its posible by writing a code for a external window open in the onselect method itself.
Thanks & regards,
Sirisha.Rs

Org Chart in tree structure

Hi Friends,
How to Create a tree structure for org. unit in web dynpro ABAP
and call the tree in F4 Help of a input box.

Good advice there guys.
I myself just finished such an implementation at one of my customers. It took 2 days to complete. I can't give you the solution as the customer retains the immaterial rights for the solution but I thought I would tell you the steps involved to get you on the right track.
1. Context. Build a context node that on the top level has the orgunit, it's attributes (such as otype, objid, stext, etc) and the recursive node that points to the orgunit node. Inside the orgunit create a node for the position. Inside the node place the attributes for the position (like before) and a recursive node that points to the position node. Finally inside the position node place a node for the person and it's attributes (like before), but no recursion node this time.
2. Layout: Place a tree element in your view. Inside the tree element insert two node types and one item type. First node is for orgunit, second one is for position. The only item is for the person. You might want to add respective icons, to get nicer UI. Add the load children action for orgunit and position. Depending on what you want to select from the tree, add a select action for either orgunit, position or person.
3. Code #1: as Chris points out, use RH_STRUC_GET to get the organization tree. I myself used O_S_P. You might want to create a FM that returns all 3 itabs returned by RH_STRUC_GET to the WDA. Create a freely programmed value help as suggested in many threads, it's pretty straight forward. In the WDA utilizing the VH, mark one or more items in the context as freely programmed VH and connect to your implementation.
4. Code #2: At start up, for example in the WDDOINIT method, create only the root node and call it for example "All organization units". Then create one action that is called when children nodes have to be loaded, one method for figuring out what do when a child is being requested (and what kind of child: orgunit, position or person) and finally a method for actually creating the node.
5. Code #3: The magic comes from RH_STRUC_GET. Use the STRUC itab at runtime to find the objects at certain levels and to determine their parent(s) and children. The most important values in the STRUC itab in this case are LEVEL, OTYPE, OBJID and PUP.
Pretty straight forward and the solution is quite nice indeed. I'm sorry if I forgot something, I wrote this without access to the system.

Integration of a Tree Structure in a Web Dynpro Table

Hi,
I am implementing an Integration of a Tree Structure in a Web Dynpro Table.
The Tree-Table os working as required, but I can not work with the OnLeadSelect Action of the table.
The Action does not work as required, meanning, it returns all the time the first row and not the "lead select".
As far as I read I should add some code to the wdDoModifyView method, but I did not figure out exactly what...
Thanks in advance,
Aviad

check this URL:
/people/valery.silaev/blog/2005/06/20/master-of-columns-part-ii

How to create tree structure in abap

hi,
 I am mohan. Please send the how to create the tree structure. how to insert the child nodes in root node. actually our requirement is we have list transaction codes. We are planning to put all transaction codes in tree level.
please tell me how to do the program in tree structure.

Hi Mohan,
Check the following program on ALV tree.
REPORT zalvtree.
CLASS cl_gui_column_tree DEFINITION LOAD.
CLASS cl_gui_cfw DEFINITION LOAD.
DATA: go_grid TYPE REF TO cl_gui_alv_grid.
DATA: ro_grid TYPE REF TO cl_gui_alv_grid.
DATA tree1 TYPE REF TO cl_gui_alv_tree.
DATA mr_toolbar TYPE REF TO cl_gui_toolbar.
DATA : gt_checked TYPE lvc_t_chit,
 gs_checked LIKE LINE OF gt_checked,
 l_part_key TYPE lvc_nkey,
 gt_node TYPE lvc_s_chit-nodekey.
INCLUDE <icon>.
INCLUDE zamit_alv_tree_toolbar_event.
INCLUDE zbcalv_tree_event_receiver.
*DATA: toolbar_event_receiver TYPE REF TO lcl_toolbar_event_receiver.
DATA: gt_sflight TYPE sflight OCCURS 0, "Output-Table
 gt_fieldcatalog TYPE lvc_t_fcat, "Fieldcatalog
 ok_code LIKE sy-ucomm. "OK-Code
START-OF-SELECTION.
END-OF-SELECTION.
CALL SCREEN 100.
*& Module PBO OUTPUT
 process before output
MODULE pbo OUTPUT.
SET PF-STATUS 'MAIN100'.
IF tree1 IS INITIAL.
 PERFORM init_tree.
else.
 CALL METHOD me->refresh_table_display
 EXCEPTIONS
 PROGRAM_ERROR = 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.
ENDIF.
CALL METHOD cl_gui_cfw=>flush.
ENDMODULE. " PBO OUTPUT
*& Module PAI INPUT
 process after input
MODULE pai INPUT.
CASE ok_code.
 WHEN 'EXIT' OR 'BACK' OR 'CANC'.
 PERFORM exit_program.
*mrk
 WHEN 'MOVE'.
 PERFORM check_selection.
 WHEN 'MBAK'.
 PERFORM another_selection.
 WHEN 'ALL'.
 PERFORM select_all.
 WHEN 'CLEAR'.
 PERFORM clear_all.
 WHEN 'DELETE'.
 PERFORM delete_all.
 WHEN 'EXPAND'.
 PERFORM expand_all.
 WHEN 'COLLAPSE'.
 PERFORM collapse_all.
 WHEN OTHERS.
 CALL METHOD cl_gui_cfw=>dispatch.
ENDCASE.
CLEAR ok_code.
CALL METHOD cl_gui_cfw=>flush.
ENDMODULE. " PAI INPUT
*& Form build_fieldcatalog
 build fieldcatalog for structure sflight
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_hierarchy_header
 build hierarchy-header-information
 -->P_L_HIERARCHY_HEADER strucxture for hierarchy-header
FORM build_hierarchy_header CHANGING
 p_hierarchy_header TYPE treev_hhdr.
p_hierarchy_header-heading = 'Hierarchy Header'. "#EC NOTEXT
p_hierarchy_header-tooltip =
 'This is the Hierarchy Header !'. "#EC NOTEXT
p_hierarchy_header-width = 30.
p_hierarchy_header-width_pix = ''.
ENDFORM. " build_hierarchy_header
*& Form exit_program
 free object and leave program
FORM exit_program.
CALL METHOD tree1->free.
LEAVE PROGRAM.
ENDFORM. " exit_program
*& Form check_selection
 text
--> p1 text
<-- p2 text
FORM check_selection .
create container for alv-tree
DATA: l_tree_container_name(30) TYPE c,
 l_custom_container2 TYPE REF TO cl_gui_custom_container.
l_tree_container_name = 'TREE2'.
IF sy-batch IS INITIAL.
 CREATE OBJECT l_custom_container2
 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'. "#EC NOTEXT
 ENDIF.
ENDIF.
CREATE OBJECT go_grid
 EXPORTING
 I_SHELLSTYLE = 0
 I_LIFETIME =
 i_parent = l_custom_container2
 I_APPL_EVENTS = space
 I_PARENTDBG =
 I_APPLOGPARENT =
 I_GRAPHICSPARENT =
 I_NAME =
EXCEPTIONS
 ERROR_CNTL_CREATE = 1
 ERROR_CNTL_INIT = 2
 ERROR_CNTL_LINK = 3
 ERROR_DP_CREATE = 4
 others = 5
IF sy-subrc <> 0.
 MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
 WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
PERFORM load_data_into_grid.
*data: lt_nodes type LVC_T_NKEY,
 ls_nodes like line of lt_nodes,
 ls_checked like line of gt_checked.
*loop at gt_checked into ls_checked.
ls_nodes = ls_checked-nodekey.
append ls_nodes to lt_nodes.
*endloop.
*CALL METHOD tree1->unselect_nodes
EXPORTING
 it_node_key = lt_nodes
EXCEPTIONS
 CNTL_SYSTEM_ERROR = 1
 DP_ERROR = 2
 MULTIPLE_NODE_SELECTION_ONLY = 3
 ERROR_IN_NODE_KEY_TABLE = 4
 FAILED = 5
 others = 6
*IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
*ENDIF.
ENDFORM. " check_selection
*& Form another_selection
 text
--> p1 text
<-- p2 text
FORM another_selection .
create container for alv-tree
DATA: l_tree_container_name(30) TYPE c,
 l_custom_container2 TYPE REF TO cl_gui_custom_container.
l_tree_container_name = 'TREE2'.
IF sy-batch IS INITIAL.
 CREATE OBJECT l_custom_container2
 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'. "#EC NOTEXT
 ENDIF.
ENDIF.
CREATE OBJECT ro_grid
 EXPORTING
 I_SHELLSTYLE = 0
 I_LIFETIME =
 i_parent = l_custom_container2
 I_APPL_EVENTS = space
 I_PARENTDBG =
 I_APPLOGPARENT =
 I_GRAPHICSPARENT =
 I_NAME =
EXCEPTIONS
 ERROR_CNTL_CREATE = 1
 ERROR_CNTL_INIT = 2
 ERROR_CNTL_LINK = 3
 ERROR_DP_CREATE = 4
 others = 5
IF sy-subrc <> 0.
 MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
 WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
PERFORM load_data_into_grid1.
DATA: lt_unsel TYPE lvc_t_nkey,
 ls_unsel LIKE LINE OF lt_unsel.
LOOP AT gt_checked INTO gs_checked.
 ls_unsel = gs_checked-nodekey.
 APPEND ls_unsel TO lt_unsel.
ENDLOOP.
CALL METHOD tree1->unselect_nodes
 EXPORTING
 it_node_key = lt_unsel
 EXCEPTIONS
 cntl_system_error = 1
 dp_error = 2
 multiple_node_selection_only = 3
 error_in_node_key_table = 4
 failed = 5
 OTHERS = 6.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
*CALL METHOD tree1->unselect_all
EXCEPTIONS
 CNTL_SYSTEM_ERROR = 1
 FAILED = 2
 others = 3
*IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
*ENDIF.
DATA: text TYPE lvc_value,
 item TYPE lvc_t_layi,
 node TYPE lvc_s_layn,
 inode TYPE lvc_nkey.
FIELD-SYMBOLS: <wa> TYPE ANY.
DATA: l_dref_wa LIKE LINE OF gt_sflight.
ASSIGN l_dref_wa TO <wa>.
READ TABLE gt_checked INTO gs_checked WITH KEY nodekey = 3.
inode = gs_checked-nodekey.
CALL METHOD tree1->get_outtab_line
 EXPORTING
 i_node_key = inode
 IMPORTING
 e_outtab_line = <wa>
 e_node_text = text
 et_item_layout = item
 es_node_layout = node
 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.
DATA: lt_layout TYPE lvc_t_laci,
 layout LIKE LINE OF lt_layout.
layout-chosen = 'X'.
layout-fieldname = tree1->c_hierarchy_column_name.
ls_item_layout-chosen = 'X'. "To give default checkbox value checked
layout-class = cl_gui_column_tree=>item_class_checkbox.
layout-editable = 'X'.
LAYOUT-U_CHOSEN = 'X'.
APPEND layout TO lt_layout.
CALL METHOD tree1->change_node
 EXPORTING
 i_node_key = inode
 i_outtab_line = <wa>
 IS_NODE_LAYOUT =
 it_item_layout = lt_layout
 I_NODE_TEXT =
 I_U_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.
*CALL METHOD tree1->change_item
EXPORTING
 i_node_key = inode
 i_fieldname = gs_checked-FIELDNAME
 i_data = <wa>
 I_U_DATA = ''
 IS_ITEM_LAYOUT = 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.
*loop at lt_unsel into ls_unsel.
*CALL METHOD tree1->update_checked_items
EXPORTING
 i_node_key = ls_unsel
 i_fieldname = ''
 i_checked = ''
EXCEPTIONS
 PROGRAM_ERROR = 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.
*endif.
ENDFORM. " another_selection
*& Form select_all
 text
--> p1 text
<-- p2 text
FORM select_all .
CONSTANTS: c_x(1) TYPE c VALUE 'X'.
*********Check box modifications.
CALL METHOD tree1->delete_all_nodes
 EXCEPTIONS
 failed = 1
 cntl_system_error = 2
 OTHERS = 3.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
clear l_part_key.
create hierarchy
PERFORM create_hierarchy USING c_x.
CALL METHOD tree1->expand_node
 EXPORTING
 i_node_key = gt_node
 I_LEVEL_COUNT = 1
 i_expand_subtree = 'X'
 EXCEPTIONS
 failed = 1
 illegal_level_count = 2
 cntl_system_error = 3
 node_not_found = 4
 cannot_expand_leaf = 5
 OTHERS = 6
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
add own functioncodes to the toolbar
perform change_toolbar.
register events
perform register_events.
adjust column_width
call method tree1->COLUMN_OPTIMIZE.
ENDFORM. " select_all
*& Form clear_all
 text
--> p1 text
<-- p2 text
FORM clear_all .
CONSTANTS: c_x(1) TYPE c VALUE space.
*********Check box modifications.
CALL METHOD tree1->delete_all_nodes
 EXCEPTIONS
 failed = 1
 cntl_system_error = 2
 OTHERS = 3.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
create hierarchy
PERFORM create_hierarchy USING c_x.
CALL METHOD tree1->expand_node
 EXPORTING
 i_node_key = gt_node
 I_LEVEL_COUNT = 1
 i_expand_subtree = 'X'
 EXCEPTIONS
 failed = 1
 illegal_level_count = 2
 cntl_system_error = 3
 node_not_found = 4
 cannot_expand_leaf = 5
 OTHERS = 6
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " clear_all
*& Form delete_all
 text
--> p1 text
<-- p2 text
FORM delete_all .
*********Check box modifications.
CALL METHOD tree1->delete_all_nodes
 EXCEPTIONS
 failed = 1
 cntl_system_error = 2
 OTHERS = 3.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " delete_all
*& Form expand_all
 text
--> p1 text
<-- p2 text
FORM expand_all .
CALL METHOD tree1->expand_node
 EXPORTING
 i_node_key = gt_node
 I_LEVEL_COUNT = 1
 i_expand_subtree = 'X'
 EXCEPTIONS
 failed = 1
 illegal_level_count = 2
 cntl_system_error = 3
 node_not_found = 4
 cannot_expand_leaf = 5
 OTHERS = 6
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " expand_all
*& Form collapse_all
 text
--> p1 text
<-- p2 text
FORM collapse_all .
CALL METHOD tree1->collapse_all_nodes
 EXCEPTIONS
 failed = 1
 cntl_system_error = 2
 OTHERS = 3.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " collapse_all
*& Form load_data_into_grid
 text
--> p1 text
<-- p2 text
FORM load_data_into_grid .
DATA:
For parameter IS_VARIANT
 l_layout TYPE disvariant,
gs_layout TYPE lvc_s_layo.
DATA gi_sflight TYPE TABLE OF zsflight.
Load data into the grid and display them
l_layout-report = sy-repid.
gs_layout-grid_title = 'Amits Test Program'.
gs_layout-sel_mode = 'A'.
SELECT *
 FROM zsflight
 INTO TABLE gi_sflight.
CALL METHOD go_grid->set_table_for_first_display
 EXPORTING
 i_structure_name = 'SFLIGHT'
 is_layout = gs_layout
 is_variant = l_layout
 i_save = 'A'
 CHANGING
 it_outtab = gi_sflight.
ENDFORM. " load_data_into_grid
*& Form load_data_into_grid
 text
--> p1 text
<-- p2 text
FORM load_data_into_grid1.
DATA:
For parameter IS_VARIANT
 l_layout TYPE disvariant,
gs_layout TYPE lvc_s_layo.
DATA gi_sflight TYPE TABLE OF zapempl.
Load data into the grid and display them
l_layout-report = sy-repid.
gs_layout-grid_title = 'Rams Test Program'.
gs_layout-sel_mode = 'A'.
SELECT *
 FROM zapempl
 INTO TABLE gi_sflight.
CALL METHOD ro_grid->set_table_for_first_display
 EXPORTING
 i_structure_name = 'ZAPEMPL'
 is_layout = gs_layout
 is_variant = l_layout
 i_save = 'A'
 CHANGING
 it_outtab = gi_sflight.
ENDFORM. " load_data_into_grid1
*& Form build_header
 build table for html_header
--> p1 text
<-- p2 text
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: flight-overview'. "#EC NOTEXT
APPEND ls_line TO pt_list_commentary.
STATUS LINE: TYPE S
CLEAR ls_line.
ls_line-typ = 'S'.
ls_line-key = 'valid until'. "#EC NOTEXT
ls_line-info = 'January 29 1999'. "#EC NOTEXT
APPEND ls_line TO pt_list_commentary.
ls_line-key = 'time'.
ls_line-info = '2.00 pm'. "#EC NOTEXT
APPEND ls_line TO pt_list_commentary.
ACTION LINE: TYPE A
CLEAR ls_line.
ls_line-typ = 'A'.
LS_LINE-KEY: NOT USED FOR THIS TYPE
ls_line-info = 'actual data'. "#EC NOTEXT
APPEND ls_line TO pt_list_commentary.
p_logo = 'ENJOYSAP_LOGO'.
ENDFORM. "build_comment
*& Form create_hierarchy
 text
--> p1 text
<-- p2 text
FORM create_hierarchy USING p_x.
DATA: ls_sflight TYPE sflight,
 lt_sflight TYPE sflight OCCURS 0.
get data
SELECT * FROM sflight INTO TABLE lt_sflight
 UP TO 200 ROWS .
SORT lt_sflight BY carrid connid fldate.
add data to tree
DATA: l_carrid_key TYPE lvc_nkey,
 l_connid_key TYPE lvc_nkey,
 l_last_key TYPE lvc_nkey.
 l_part_key TYPE lvc_nkey
PERFORM add_carrid_line USING ls_sflight
 CHANGING l_part_key.
gt_node = l_part_key.
LOOP AT lt_sflight INTO ls_sflight.
 ON CHANGE OF ls_sflight-carrid.
 PERFORM add_carrid_line USING ls_sflight
 l_part_key
 CHANGING l_carrid_key.
 PERFORM add_connid_line USING ls_sflight
 l_carrid_key
 CHANGING l_connid_key.
 PERFORM add_complete_line USING ls_sflight
 l_connid_key
 p_x
 CHANGING l_last_key.
 CONTINUE.
 ENDON.
 ON CHANGE OF ls_sflight-connid.
 PERFORM add_connid_line USING ls_sflight
 l_carrid_key
 CHANGING l_connid_key.
 PERFORM add_complete_line USING ls_sflight
 l_connid_key
 p_x
 CHANGING l_last_key.
 CONTINUE.
 ENDON.
 PERFORM add_complete_line USING ls_sflight
 l_connid_key
 p_x
 CHANGING l_last_key.
ENDLOOP.
calculate totals
CALL METHOD tree1->update_calculations.
this method must be called to send the data to the frontend
CALL METHOD tree1->frontend_update.
ENDFORM. " create_hierarchy
*& Form add_carrid_line
 add hierarchy-level 1 to tree
 -->P_LS_SFLIGHT sflight
 -->P_RELEATKEY relatkey
 <-->p_node_key new node-key
FORM add_carrid_line USING ps_sflight TYPE sflight
 p_relat_key TYPE lvc_nkey
 CHANGING p_node_key TYPE lvc_nkey.
DATA: l_node_text TYPE lvc_value,
 ls_sflight TYPE sflight.
set item-layout
DATA: lt_item_layout TYPE lvc_t_layi,
 ls_item_layout TYPE lvc_s_layi.
ls_item_layout-t_image = '@3P@'.
ls_item_layout-fieldname = tree1->c_hierarchy_column_name.
ls_item_layout-style =
 cl_gui_column_tree=>style_intensifd_critical.
APPEND ls_item_layout TO lt_item_layout.
add node
l_node_text = ps_sflight-carrid.
CALL METHOD tree1->add_node
 EXPORTING
 i_relat_node_key = p_relat_key
 i_relationship = cl_gui_column_tree=>relat_last_child
 i_node_text = l_node_text
 is_outtab_line = ls_sflight
 it_item_layout = lt_item_layout
 IMPORTING
 e_new_node_key = p_node_key.
ENDFORM. " add_carrid_line
*& Form add_connid_line
 add hierarchy-level 2 to tree
 -->P_LS_SFLIGHT sflight
 -->P_RELEATKEY relatkey
 <-->p_node_key new node-key
FORM add_connid_line USING ps_sflight TYPE sflight
 p_relat_key TYPE lvc_nkey
 CHANGING p_node_key TYPE lvc_nkey.
DATA: l_node_text TYPE lvc_value,
 ls_sflight TYPE sflight.
set item-layout
DATA: lt_item_layout TYPE lvc_t_layi,
 ls_item_layout TYPE lvc_s_layi.
ls_item_layout-t_image = '@3Y@'.
ls_item_layout-style =
 cl_gui_column_tree=>style_intensified.
ls_item_layout-fieldname = tree1->c_hierarchy_column_name.
APPEND ls_item_layout TO lt_item_layout.
add node
l_node_text = ps_sflight-connid.
CALL METHOD tree1->add_node
 EXPORTING
 i_relat_node_key = p_relat_key
 i_relationship = cl_gui_column_tree=>relat_last_child
 i_node_text = l_node_text
 is_outtab_line = ls_sflight
 it_item_layout = lt_item_layout
 IMPORTING
 e_new_node_key = p_node_key.
ENDFORM. " add_connid_line
*& Form add_cmplete_line
 add hierarchy-level 3 to tree
 -->P_LS_SFLIGHT sflight
 -->P_RELEATKEY relatkey
 <-->p_node_key new node-key
FORM add_complete_line USING ps_sflight TYPE sflight
 p_relat_key TYPE lvc_nkey
 p_x
 CHANGING p_node_key TYPE lvc_nkey.
DATA: l_node_text TYPE lvc_value.
set item-layout
DATA: lt_item_layout TYPE lvc_t_layi,
 ls_item_layout TYPE lvc_s_layi.
ls_item_layout-fieldname = tree1->c_hierarchy_column_name.
ls_item_layout-chosen = p_x. "To give default checkbox value checked
ls_item_layout-class = cl_gui_column_tree=>item_class_checkbox.
ls_item_layout-editable = 'X'.
APPEND ls_item_layout TO lt_item_layout.
l_node_text = ps_sflight-fldate.
CALL METHOD tree1->add_node
 EXPORTING
 i_relat_node_key = p_relat_key
 i_relationship = cl_gui_column_tree=>relat_last_child
 is_outtab_line = ps_sflight
 i_node_text = l_node_text
 it_item_layout = lt_item_layout
 IMPORTING
 e_new_node_key = p_node_key.
ENDFORM. " add_complete_line
*& 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.
define the events which will be passed to the backend
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_checkbox_change.
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.
CALL METHOD tree1->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.
set Handler
DATA: l_event_receiver TYPE REF TO lcl_tree_event_receiver.
CREATE OBJECT l_event_receiver.
SET HANDLER l_event_receiver->handle_node_ctmenu_request
 FOR tree1.
SET HANDLER l_event_receiver->handle_node_ctmenu_selected
 FOR tree1.
SET HANDLER l_event_receiver->handle_item_ctmenu_request
 FOR tree1.
SET HANDLER l_event_receiver->handle_item_ctmenu_selected
 FOR tree1.
SET HANDLER l_event_receiver->handle_checkbox_change FOR tree1.
ENDFORM. " register_events
*& Form change_toolbar
 text
--> p1 text
<-- p2 text
FORM change_toolbar.
DATA: toolbar_event_receiver TYPE REF TO lcl_toolbar_event_receiver.
get toolbar control
CALL METHOD tree1->get_toolbar_object
 IMPORTING
 er_toolbar = mr_toolbar.
CHECK NOT mr_toolbar IS INITIAL.
add seperator to toolbar
CALL METHOD mr_toolbar->add_button
 EXPORTING
 fcode = ''
 icon = ''
 butn_type = cntb_btype_sep
 text = ''
 quickinfo = 'This is a Seperator'. "#EC NOTEXT
add Standard Button to toolbar (for Delete Subtree)
CALL METHOD mr_toolbar->add_button
 EXPORTING
 fcode = 'DELETE'
 icon = '@18@'
 butn_type = cntb_btype_button
 text = ''
 quickinfo = 'Delete subtree'. "#EC NOTEXT
add Dropdown Button to toolbar (for Insert Line)
CALL METHOD mr_toolbar->add_button
 EXPORTING
 fcode = 'INSERT_LC'
 icon = '@17@'
 butn_type = cntb_btype_dropdown
 text = ''
 quickinfo = 'Insert Line'. "#EC NOTEXT
set event-handler for toolbar-control
CREATE OBJECT toolbar_event_receiver.
SET HANDLER toolbar_event_receiver->on_function_selected
 FOR mr_toolbar.
SET HANDLER toolbar_event_receiver->on_toolbar_dropdown
 FOR mr_toolbar.
ENDFORM. " change_toolbar
*& Form init_tree
 text
--> p1 text
<-- p2 text
FORM init_tree.
create fieldcatalog for structure sflight
PERFORM build_fieldcatalog.
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'.
IF sy-batch IS INITIAL.
 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.
 IF sy-subrc <> 0.
 MESSAGE x208(00) WITH 'ERROR'. "#EC NOTEXT
 ENDIF.
ENDIF.
create tree control
CREATE OBJECT tree1
 EXPORTING
 parent = l_custom_container
 node_selection_mode = cl_gui_column_tree=>node_sel_mode_multiple "node_sel_mode_single
 item_selection = 'X'
 no_html_header = ''
 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.
create Hierarchy-header
DATA l_hierarchy_header TYPE treev_hhdr.
PERFORM build_hierarchy_header CHANGING l_hierarchy_header.
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.
create emty tree-control
CALL METHOD tree1->set_table_for_first_display
 EXPORTING
 is_hierarchy_header = l_hierarchy_header
 it_list_commentary = lt_list_commentary
 i_logo = l_logo
 i_background_id = 'ALV_BACKGROUND'
 i_save = 'A'
 is_variant = ls_variant
 CHANGING
 it_outtab = gt_sflight "table must be emty !!
 it_fieldcatalog = gt_fieldcatalog.
CONSTANTS: c_s(1) TYPE c VALUE space.
create hierarchy
PERFORM create_hierarchy USING c_s.
add own functioncodes to the toolbar
PERFORM change_toolbar.
register events
PERFORM register_events.
adjust column_width
call method tree1->COLUMN_OPTIMIZE.
ENDFORM. " init_tree
Award points if found useful.
Regards
Indrajit

SE80 : Source for the tree structure display for any type of Object

Hi Experts ,
I have developed a report which takes in a TR .Given a TR , I get the list of objects under it from table e071 table .
Now , I need all the objects (includes,screen,status,etc) related each of this object . SE80 perfectly does this in the form of a tree structure but now sure how.
Is there any Standard Table in which this information is stored or any FM/Method using which these details can be retrieved ?

Hi,
You may use this tool : [SDN wiki: ABAP program to read where-used lists|http://wiki.sdn.sap.com/wiki/display/ABAP/ABAPprogramtoreadwhere-used+lists ]
Sandra

Event Handling for tree structure using "CL_GUI_ALV_TREE_SIMPLE"

Hi,
I have created a tree structure using class CL_GUI_ALV_TREE_SIMPLE.
Now I wanted to insert a check and give message when the user opens the last node in my structure.
I checked the events available in the class , but there in none which gets trigered when we try to open a node.
Please guide me with this scenario.
Thanks & Regards,
Omkar M.

Hello Omkar
The solution is somewhat odd but apparently works. As sample report please check BCALV_TREE_SIMPLE_DEMO.
Copy this report and make the following changes:
class lcl_tree_event_receiver definition.
public section.
    methods:
    on_expand_no_children " new event handler method
      for event expand_no_children of cl_gui_column_tree
        importing NODE_KEY, " class = CL_GUI_COLUMN_TREE !!!
    on_add_hierarchy_node
              for event on_add_hierarchy_node of cl_gui_alv_tree_simple
                    importing grouplevel
                              index_outtab.
endclass.
CLASS lcl_tree_event_receiver IMPLEMENTATION.
METHOD on_expand_no_children.
    BREAK-POINT.
ENDMETHOD.                    "on_expand_no_children
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_expand_no_children.
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. " CL_GUI_ALV_TREE_SIMPLE
SET HANDLER l_event_receiver->on_expand_no_children
                                          FOR ALL INSTANCES. " CL_GUI_COLUMN_TREE !!!
ENDFORM.                               " register_events
As soon as you open a node in the ALV tree the report will stop at the break-point.
Now you need to check if there are still children nodes to be displayed.
If not then trigger your special coding.
Regards
Uwe

XML to tree structure

Hi guys
Not used Java in a while (or done much programming in a while to be honest) and i've been set the task of reading an XML document into a tree structure but without using any existing XML libraries. I'm a little bit stumped which line to go down and wondered if anyone had could help me out with a few suggestions as to how to tackle it.
Many thanks

redbulladdict wrote:
yeah i have read the article and i get that i need to read in the first tag as the root and then add the next tag as a node and then its data as a node,Once you write the code to read a node, you just apply it recursively to these other nodes.
then once that tag has closed, back track and the next tag as a node and so on.To back track you should just have to return from your recursive method. Returning from the method implicitly pops a stack thus returning you to the enclosing tag.
But having real trouble making a start on the source code, can't find any good examples to get me started. My coding skills are really rusty.Can you write a simple "Hello world" program? Can you open a file, and read in one line at a time, and count the lines?
Thanks for giving me all this help.

TREE STructures

hi all,
i was working with the tree structures . . . i used CL_GUI_SIMPLE_TREE. when i was done with it i found that it can only make one level nodes nesting .
Please help what should i use, i want to have a tree with any number of levels of tree nodes.
Thanx in Advance
Zahid

Hello Shehryar,
Firstly, it's nice to know that you like some of the posts that I make here. I like some of your posts very much, too.
Secondly, Sorry for this late response.
Now I shall try to correct you :-)...
Please consider the last post that Zahid had made. He says :
Thank You Raj! for ur help..
plz look at the problem what i am actually facing , i mentioned in the above post . . . plz tell me some solution
Zahid
What I understand when he says "....the problem i am actually facing, i mentioned in the above post..." is that he wants to have a solution to the problem of building a tree of his specifications.
In fact, I see that you had also sent him a mail giving him some information. I have no idea about what that was.
Since he says he is a beginner, I just wanted to give him a little food for thought, if I can call it that, to some basic problem-solving skills in computation. The tree control had just happened to be an example here.
Trust this sorts things out a bit. Please revert, if you have something else to be clarified.
Regards,
Anand Mandalika.
P.S. 1. I personally prefer going to the Class and clicking the button for "Method Documentation" (place your cursor on the method name and hit F9), rather than going to SE63 (to which the developer might sometimes be unauthorized)
2. Attempting / wanting to find out the documentation of all the objects (be it programs / FMs / classes / anything ) is something that I don't think makes too much sense. You would have to know the object for which you want the documentation. In other words, you would have to know ( or find out if you do not know ) the tool that you need to use. Then you can read more about it and see if the particular tool does what you want. It is hardly the case that you see what a tool offers and then decide whether you have a requirement for that.

layout:treeview Closed tree structure?

HI,
I'm able to generate the tree view structure
but the problem is, when close & open the window , it is showing open tree structure
i want it to be close tree view
<layout:treeview expandedLevelsAtFirst="-1" >
 <logic:present name="agrovoc" >
 <logic:iterate id="agrovoc" name="agrovoc" scope="session">
 <c:set var="term" value="${agrovoc.AGTerm}" />
 <c:set var="bterm" value="${agrovoc.AGBTerm}" />
 <c:set var="nterm" value="${agrovoc.AGNTerm}" />
 <c:set var="rterm" value="${agrovoc.AGRTerm}" />
 <layout:menuItem key="${agrovoc.AGURI}" link="#" >
 <logic:notEmpty name="bterm">
 <layout:menuItem key="BroaderTerms">
 <layout:menuItem key="${agrovoc.AGBURI}" link="#"/>
 </layout:menuItem>
 </logic:notEmpty>
 <logic:notEmpty name="nterm">
 <layout:menuItem key="NarrowerTerms">
 <layout:menuItem key="${agrovoc.AGNURI}" link="#" />
 </layout:menuItem>
 </logic:notEmpty>
 <logic:notEmpty name="rterm">
 <layout:menuItem key="RelatedTerms">
 <layout:menuItem key="${agrovoc.AGRURI}" link="#" />
 </layout:menuItem>
 </logic:notEmpty>
 </layout:menuItem>
 </logic:iterate>
 </logic:present>
 </layout:treeview>I'm using the above code, the tree structure in turn call the java script for tits operations
i even cleared the session object also, but no use..
how to solve this..?

Thanks a lot for the help so far, I've created a method to check the basePanel for any components it holds and try to create a JTree display from it. The code I currently have is :
 public void updateObjectSelector()
 // Setup the tree viewer
 DefaultMutableTreeNode root = new DefaultMutableTreeNode(basePanel.getClass());
 addChildren(root, basePanel);
 tree = new JTree(root);
 public void addChildren(DefaultMutableTreeNode root, JPanel parent)
 Component [] children = parent.getComponents();
 for(int i = 0; i < children.length; i++)
 DefaultMutableTreeNode child = new DefaultMutableTreeNode(children.getClass());
 try
 addChildren(child, (JPanel) children[i]);
 catch(ClassCastException e)
 root.add(child);
basePanel and tree are both global variables. basePanel is the root Panel to which everything is added to.
I am calling "updateObjectSelector()" every time a component is added to the basePanel but at the moment all I can get displayed by the JTree is the getClass() of the basePanel, none of its children are being displayed. Can anyone see what I have done wrong here?
Many thanks again for all your help so far.

Tree structure visualisation methods

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