Column Headers 

By default, each column in the ALV output has a column header. You do not have to generate the objects in question first.

You can change a column header. To do this, you can set up the following component parts:

·        Text

·        Graphic

·        Tooltip

You are able to make the following settings for a column header:

·        Generate, get, and delete object for column header

·        Set wording of column header

·        Specify path to graphic in column header

·        Set position of graphic in column header

·        Set wording for tooltip

Information on Standard Column Headers

Standard column headers only contain text. The wording depends on the context node attribute:

·        If the attribute has no DDIC reference:

By default, the system uses the technical name of the attribute for the column header.

·        If the attribute has a DDIC reference:

The system assigns column headers as follows:

¡        If field labels have been defined for the DDIC data element, the system uses the short text of the DDIC data element as the column header.

¡        If no field labels have been defined, the system uses the technical name of the DDIC data element.

Generating, Getting, and Deleting Objects for Column Headers

The column header of a column in your ALV output is an instance of the class CL_SALV_WD_COLUMN_HEADER. A column header object can exist for every column object.

To get, generate, or delete a column header object, use the methods of the class CL_SALV_WD_COLUMN.

Methods for Getting, Generating, and Deleting Column Headers

Function	Method
Get column header object	GET_HEADER
Generate column header object	CREATE_HEADER
Delete column header object	DELETE_HEADER

Defining the Wording of Column Headers

You can define the text to be displayed as a column header. You have the following options:

·        You can enter free text.

·        You can enter a separate DDIC data element whose short field label is to be used as the column header.

·        You can enter a separate DDIC element and define which of the field labels of the DDIC data element is to be used as the column header.

To specify the wording of the column header, use the methods of the class CL_SALV_WD_COLUMN_HEADER.

Methods for the Wording of Column Headers

Function	Method
Define free text as column header	SET_TEXT
Get wording for column header	GET_TEXT
Specify DDIC data element whose field label is to be used as the column header	SET_BINDING_ELEMENT
Get name of the DDIC data element	GET_BINDING_ELEMENT
Specify type of field label to be used as column header	SET_BINDING_FIELD
Get type of field label to be used as column header	GET_BINDING_FIELD

Setting Path of Graphic in Column Headers

You can display any graphic in a column header as long as it is suitable for the Web Dynpro environment (see Handling Web Icons). To define the path or ID of the graphic file, use the methods of the class CL_SALV_WD_COLUMN_HEADER.

Methods for Defining Paths of Graphic Files

Function	Method
Set path or ID for graphic	SET_IMAGE_SOURCE
Get path or ID for graphic	GET_IMAGE_SOURCE

Setting Positions of Graphics in Column Headers

You can choose whether graphics displayed in column headers are placed before or after the text. To do this, use the methods of the class CL_SALV_WD_COLUMN_HEADER.

Methods for Placing Graphics in Headers

Function	Method
Set position within header	SET_IMAGE_FIRST
Get position within header	GET_IMAGE_FIRST

Setting Wording for Tooltips

The tooltip of a column header becomes visible when the user places the cursor over the header of a column. To specify the wording of tooltips, use the methods of the class CL_SALV_WD_COLUMN_HEADER.

Methods for Column Header Tooltips

Function	Method
Set wording for tooltip	SET_TOOLTIP
Get wording for tooltip	GET_TOOLTIP