DropDownByIndex 

A DropDownByIndex UI element provides the user with a dropdown list box. You cannot select more than one entry from the selection list. The UI element consists of a text field, a button, and a selection list. Any list item already selected is displayed in the text field. When selecting the button, a list with all possible values is displayed.

Example of Use

If you want to create a table with dropdown lists, whereby each table row can have different values in its dropdown list, you should use DropDownByIndex.

To enable the development of accessible applications, the label property is checked during the syntax check.

If no label has been set, and no descriptive text has been specified for the appropriate bound context element in the ABAP Dictionary, the tooltip property is checked.

 

Examples of the Display

The dropdown list box UI elements, DropDownByIndex and DropDownByKey, do not differ from each other when displayed on the screen. However, the data binding model for the DropDownByKey UI element has a completely different concept. More information: Data Binding (for general information within Web Dynpro), Data Binding of User Interface Element Properties, and Data Binding Using Index and Key. You can find more information about using dropdown list boxes with index data binding in AbstractDropDownByIndex.

 

Runtime Class

CL_WD_DROPDOWN_BY_IDX

 

Properties in View Designer

Name	Type	Initial Value	Bindable
ID	STRING	(automatic)	No
deselectable	WDY_BOOLEAN	false	No
enabled	WDY_BOOLEAN	true	Yes
explanation	Translatable text		No
labelFor	STRING		No
readOnly	WDY_BOOLEAN	false	Yes
selectionChangeBehaviour	WDUI_LEAD_SEL_CHNG_BEHVR	auto	No
state	WDUI_STATE	normal	Yes
texts	Translatable text		Mandatory
textDirection	WDUI_TEXT_DIRECTION	inherit	Yes
tooltip	Translatable text		Yes
visible	WDUI_VISIBILITY	visible	Yes
width	STRING		Yes

 

Events in View Designer

Name

onSelect

Other properties that can be inherited are defined in the associated higher-level classes. The associated UI elements are:

●        AbstractDropDownByIndexs

●        AbstractDropDowns

●        UIElements

●        ViewElements

Dynamic Programming

For dynamic programming, the same properties, events and aggregations are available as in the View Designer. Bear in mind the different spellings.

Dynamic Programming of Properties

View Designer Name	Runtime Name	Type
deselectable	DESELECTABLE	WDY_BOOLEAN
enabled	ENABLED	WDY_BOOLEAN
explanation	EXPLANATION	WDY_MD_TRANSLATABLE_TEXT
labelFor	LABEL_FOR	STRING
readOnly	READ_ONLY	WDY_BOOLEAN
selectionChangeBehaviour	SELECTION_CHANGE_BEHAVIOUR	WDUI_LEAD_SEL_CHNG_BEHVR
selectionChangeBehaviour: auto	CL_WD_DROPDOWN_BY_IDX=>E_SELECTION_CHANGE_BEHAVIOUR-AUTO
selectionChangeBehaviour: manual	CL_WD_DROPDOWN_BY_IDX=>E_SELECTION_CHANGE_BEHAVIOUR-MANUAL
state	STATE	WDUI_STATE
state: normal	CL_WD_DROPDOWN_BY_IDX=>E_STATE-NORMAL
state: required	CL_WD_DROPDOWN_BY_IDX=>E_STATE-REQUIRED
texts	TEXTS	WDY_MD_TRANSLATABLE_TEXT
textDirection	TEXT_DIRECTION	WDUI_TEXT_DIRECTION
textDirection: inherit	CL_WD_DROPDOWN_BY_IDX=>E_TEXT_DIRECTION-INHERIT
textDirection: ltr	CL_WD_DROPDOWN_BY_IDX=>E_TEXT_DIRECTION-LTR
textDirection: rtl	CL_WD_DROPDOWN_BY_IDX=>E_TEXT_DIRECTION-RTL
tooltip	TOOLTIP	WDY_MD_TRANSLATABLE_TEXT
visible	VISIBLE	WDUI_VISIBILITY
visible: none	CL_WD_DROPDOWN_BY_IDX=>E_VISIBLE-NONE
visible: visible	CL_WD_DROPDOWN_BY_IDX=>E_VISIBLE-VISIBLE
width	WIDTH	STRING

 

Dynamic Programming of Events

View Designer Name	Runtime Name
onSelect	ON_SELECT

Example

There is a system example for this UI element in the DEMO_UIEL_STD_SELECTION component in the DEMO_UIEL_DROPDOWN_BY_IDX application.