Getting index through onSelect action of DropDownByIndex UI element

[Former Member]

Does anyone have an example of getting the index of the selected row of a DropDownByIndex UI element

Currently we are always getting a value of zero !? Do you know why ?

We currently use coding like this:

<b>public void onActionSelectGemeente(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent, int index )

{

//@@begin onActionSelectGemeente(ServerEvent)

wdContext.nodeGemEtb_Gem_G0().setLeadSelection(index);</b>

[Former Member · Accepted solution]

There are two possibilities to get the new selected index:

1. As already said, by asking the node for its lead selection

2. Using event parameter mapping. In this case, you have to add a statement in wdDoModifyView() to map the event parameter "index" of event "onSelect" of the drop-down list to an action event handler parameter.

I would suggest to use case 1. here, it's simpler.

Armin

[Former Member · Accepted solution]

What statement are you refering at in solution two ?

[Former Member · Accepted solution]

if (firstTime)
{
  IWDDropDownByIndex dd = (IWDDropDownByIndex)
    view.getElement(<dropdownID>);
  dd.mappingOfOnSelect().addSourceMapping("index", <name of event handler parameter>);
}

[Former Member · Accepted solution]

Hi,

In wdDoModifyView if u use

<drpdownobject>.mappingOfOnSelect().addSourceMapping("index","argument name in the onSelectfunction say 'sel'")

the index value will be passed to 'sel' as a function argument thorugh the onSelect function and you can get the value using this .

Regards

Bharathwaj

[Former Member]

Hi Heymen,

You can get the index of the selected value from the drop-down list using method getleadselection() from the

wdcontext.node<node name>().getLeadselection();

for using this method you have to set singleton property of this node to false. then and then you can get the index value through this method.

Regards,

Bhavik

[Former Member]

Hi,

Since u r creating a argument ur self in the function and not setting it the value is being shoen as zero.

You have to manually use wdContext.node<name>().getLeadSelection() and get it.. Then u can use the value.. and what are u trying to do with setlead selection?

Regards

Bharathwaj

[Former Member]

In event handler you have necessary element <b>already selected</b>. So just use wdContext.nodeGemEtb_Gem_G0().getLeadSelection().

VS