TimedTrigger 

UI element TimedTrigger automatically and periodically triggers an event with a specified delay. TimedTrigger is not displayed on the user interface. It therefore ignores the tooltip and the visibility property. However, in specific layouts such as the matrix layout, it does take up space. To trigger an action, you must bind the onAction property to an action. You use the delay property to specify the delay in seconds.

To prevent events being triggered by UI element TimedTrigger, proceed as follows:

●     Set the value of the delay to 0 seconds

●     Disable the TimedTrigger UI element

●     Set the visibility property to a value not equal to visible

Every user interaction is interrupted when the onAction event is triggered.

In the Web Dynpro application, you can – with certain restrictions – use periodical server requests and UI element TimedTrigger to trigger push events – that is, the controlled triggering of events, for example, as a message for the user. When using UI element TimedTrigger, the client actively retrieves the data from the server. Due to the considerable server load, you should only use this option if the number of clients is small.

To enable the development of accessible applications, the tooltip property is not checked during the syntax check, since there is not real need for a tooltip with this UI element.

 

Runtime Class

CL_WD_TIMED_TRIGGER

 

Properties in View Designer

Name	Type	Initial Value	Bindable
Id	STRING	(automatic)	No
delay	I	0	Yes
enabled	WDY_BOOLEAN	true	Yes
tooltip	Text		Yes
visible	WDUI_VISIBILITY	visible	Yes

 

Events in View Designer

Name

onAction

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

●      UIElement

●      ViewElement

Data Binding

You can use the onAction property to specify the action that is to be triggered after a specific delay.

Dynamic Programming

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

Dynamic Programming of Properties

View Designer Name	Runtime Name	Type
delay	DELAY	I
enabled	ENABLED	WDY_BOOLEAN
tooltip	TOOLTIP	WDY_MD_TRANSLATABLE_TEXT
visible	VISIBLE	WDUI_VISIBILITY
visible: none	CL_WD_TIMED_TRIGGER=>E_VISIBLE-NONE
visible: visible	CL_WD_TIMED_TRIGGER=>E_VISIBLE-VISIBLE

 

Dynamic Programming of Events

View Designer Name	Runtime Name
onAction	ON_ACTION

Example

You can find examples of this interface element in the system in the Web Dynpro application WDR_TEST_UI_ELEMENTS, and in the component WDR_TEST_EVENTS in the view TIMEDTRIGGER.