SAP Creating Design Objects and Elements in SAP Netweaver Managing ALV Output Areas

Creating a Design Object

Firstly, you define the basic layout for your design object. You decide whether to display a single element, a sequence of elements in a row, or elements arranged in multiple rows and columns. You use one of the following classes for this purpose:

Classes for the Layout of Design Objects

Layout	Class
Single element	See Elements Types and Their Classes (except for the element type Label)
Row-type layout	CL_SALV_FORM_LAYOUT_FLOW
Table-type layout	CL_SALV_FORM_LAYOUT_GRID

When creating an element of the element type Label, you must always specify the corresponding text element. This means that you cannot use this element as a single element in a design object.

Creating an Element

After you have created a layout for a design object (see above), you can use methods to create elements with the various element types: These methods can be found in the classes CL_SALV_FORM_LAYOUT_FLOW and CL_SALV_FORM_LAYOUT_GRID.

Methods for Creating Elements for a Design Object

Function	Method
Create row-type layout (for nested layouts)	CREATE_FLOW
Create table-type layout (for nested layouts)	CREATE_GRID
Create text element	CREATE_TEXT
Create a label for a specific text element	CREATE_LABEL
Create a header element	CREATE_HEADER_INFORMATION
Create action information	CREATE_ACTION_INFORMATION

You use the elements to create objects of the following classes:

Element Types and Their Classes

Element Type	Class
Row-type layout (for nested layouts)	CL_SALV_FORM_LAYOUT_FLOW
Table-type layout (for nested layouts)	CL_SALV_FORM_LAYOUT_GRID
Text element	CL_SALV_FORM_TEXT
Label element	CL_SALV_FORM_LABEL
Header element	CL_SALV_FORM_HEADER_INFO
Action information	CL_SALV_FORM_ACTION_INFO

No parameters are required for the row-type layout.

However, for the table-type layout you specify the parameters ROW and COLUMN.

Exception: When creating an element of the element type Label, you must always specify the corresponding text element (R_LABEL_FOR) too, regardless of the layout type.