Frontend registration(i): get already registered tree events.. The following four tree events registers ALV Tree in the constructor method itself. - clguicolumntreeeventidexpandnochildren (needed to load data to frontend when a user expands a node) - clguicolumntreeeventidheadercontextmenreq (needed for header context menu) - clguicolumntreeeventidheaderclick (allows selection of columns (only when item selection activated)) - clguicolumntreeeventiditemkeypress (needed for F1-Help (only when item selection activated)) Nevertheless you have to provide their IDs again if you register additional events with SETREGISTEREDEVENTS (see below).

The combination of these two might sound difficult but actually, these are quite easy to handle.

As we were going along with our development we found some well-discussed topics over the internet which I have tried to fine tune and address through this article.

The left panel container has been designed to hold the tree model and the right container is to display the details of the left panel document upon an event of double clicking.

In this example a tree structure has been created with sales orders which have sales contract as a preceding document.

These sales orders can be selected by giving certain selection screen criteria.

Upon clicking on the leaf node system will display details of the sales order in the right container as an ALV format (please refer fig.

Types: begin of ty vbfa, vbelv type vbfa - vbelv, Preceding SD Document posnv type vbfa - posnv, Preceding SD Document Item Number vbeln type vbfa - vbeln, Subsequent SD Document posnn type vbfa - posnn, Subsequent SD Document Item Number vbtyp n type vbfa - vbtyp n, Subsequent Document Category vbtyp v type vbfa - vbtyp v, Preceding Document Category end of ty vbfa.

Data: ls vbfa type ty vbfa, lt vbfa type table of ty vbfa.

Data: ls vbfa copy type ty vbfa, lt vbfa copy type table of ty vbfa.

Types: begin of ty vbak, vbeln type vbak - vbeln, Contract Number audat type vbak - audat, Document Date ernam type vbak - ernam, Name of Person who Created the Object auart type vbak - auart, Sales Document Type end of ty vbak.

Levelcount in expandnode method determines in which level of the tree we want the doubleclick method to be triggered.

CALL METHOD SENDER - EXPAND NODE EXPORTING NODE KEY node key LEVEL COUNT 2.

CALL METHOD REF ALV2 - SET TABLE FOR FIRST DISPLAY EXPORTING I STRUCTURE NAME VBAP IS LAYOUT ls layout CHANGING IT OUTTAB lt vbap.

CALL METHOD REF ALV2 - REFRESH TABLE DISPLAY.

Name who Created the Object selection-screen: end of block b1.

Also, the Linescolumns in the attributes tab of the screen painter are to be filled with the value 240 to get the full-screen splitter container.

CREATE OBJECT REF SPLIT EXPORTING PARENT ref cust ROWS 1 COLUMNS 2.

CALL METHOD REF SPLIT - GET CONTAINER EXPORTING ROW 1 COLUMN 1 RECEIVING CONTAINER ref cont1.

CALL METHOD REF SPLIT - GET CONTAINER EXPORTING ROW 1 COLUMN 2 RECEIVING CONTAINER ref cont2.

CREATE OBJECT REF TREE EXPORTING NODE SELECTION MODE cl simple tree model node sel mode single.

CALL METHOD REF TREE - CREATE TREE CONTROL EXPORTING PARENT ref cont1.

CREATE OBJECT REF ALV2 EXPORTING I PARENT ref cont2.

ENDMODULE. OBJECTCREATION OUTPUT.

The following four tree events registers ALV Tree in the constructor method itself.

F1-Help (only when item selection activated)) Nevertheless you have to provide their IDs again if you register additional events with SETREGISTEREDEVENTS (see below).

Sap Alv Examples