ComboBox: retrieve 'index' of current choice?

[Bryce S.]

Hi,

Anyone know what function to call to get the 'index' of the currently chosen item in a ComboBox?

ComboBox using addItem adds a 'Name' string and a 'Text' string.
The first 'Name' value is returned to the program variable.
I now want to grab the 'Text' that went with that choice.
But how do I get it without knowing the index of the choice?
The only function I can find to get the text is 'getItemText' which requires an integer 'index' parameter.
I know I could write something to run through the form (or dom tree?) and find it, but I think it should be simpler than that, like maybe a function called getCurrentIndex() or something.

example:

CALL cb.clear()
CALL cb.addItem("O","Open Driver")
CALL cb.addItem("T","Trials Driver")
CALL cb.addItem("V","Overseas Junior Driver")
CALL cb.addItem("J","Junior Driver")

if user chooses 3rd option above the program variable gets 'V', I am after an easy retreive of associated text string value "Overseas Junior Driver" to display and use elsewhere.

Thanks,
  Bryce Stenberg
  Harness Racing New Zealand Inc.

[.]

Bryce,

Can't think of one of the top of my head but using ui.ComboBox.forName and other ui.ComboBox methods  it should be relatively simple to write a library function that returns the value you are after

Untested but something like...

Code (genero) Select Expand

FUNCTION comboBox_getTextByItemName(fieldname, itemname)
DEFINE fieldname STRING
DEFINE itemname STRING
DEFINE cb ui.ComboBox

   LET cb = ui.ComboBox.forName(fieldname)
   # add some error handling here if cb null

   FOR i = 1 TO cb.getItemCount()
     IF cb.getItemName(i) = itemname THEN
         RETURN cb.getItemText(i)
      END IF
   END FOR
   # add some error handling to cater for case where name not found
   RETURN ""
END FUNCTION

Hope that helps,

Reuben

   

[Bryce S.]

Thanks Reuben, I write something like that.  I still think getting the current index (or the current text string) should be one of the combobox's methods however.

Regards, Bryce.

[Sebastien F.]

Bryce,

Actually there is no "current index" or "current item" in a combobox drop down list:
What is relevant is the current value of the field.
This value could be used to search the index of the item in the list.

So instead of a "getCurrentItem" or "getCurrentIndex" method, I would prefer something like:

  ui.ComboBox.getIndexOf("current key value") returning integer

Seb

[Bryce S.]

Hi,

Just to second Sebastien's idea - that would be ideal to have a 'getIndexOf' method, would allow one to work with the already available methods which require an index value.

FourJs - can this be added as a feature request?

Regards,
  Bryce Stenberg.

[Bernard M.]

Bryce,

This has been registered as new feature request #Fz.2475.

Best regards,
Bernard 

[Sebastien F.]

FYI:

After internal discussion, we will probably do this:

    ui.ComboBox.getItemTextByName( name string ) returning string

Since the item name must be unique, we think this makes more sense as:

    ui.ComboBox.getIndexOf( name string ) returning integer

Any comment is welcome.

Seb

[Bryce S.]

>    ui.ComboBox.getItemTextByName( name string ) returning string

Very good, I like it.
Thanks, Bryce Stenberg.

[Paul S.]

I see this has been added to the 2.11 Online Docs. in the New Features Section.

When will 2.11 be ready for beta or will 2.11 become 2.20?

Paul

FYI:

After internal discussion, we will probably do this:

    ui.ComboBox.getItemTextByName( name string ) returning string

Since the item name must be unique, we think this makes more sense as:

    ui.ComboBox.getIndexOf( name string ) returning integer

Any comment is welcome.

Seb