How do I select an option from a dropdown in IE if it is updated by another select by AJAX?

[Afaan]

Is there any way to select an option from a <select> which is itself updated by a previous <select> by AJAX?

[Danp2]

I would imagine so.

[Afaan]

Just now, Danp2 said:

I would imagine so.

And that way is?

[Danp2]

Using _IEFormElementOptionSelect I would imagine. <shrug>

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[Afaan]

_IEFormElementOptionSelect works fine with regular <select>s. I use it to set the first select which triggers an ajax request which in turn gets the options for the second select. If I call _IEFormElementOptionSelect on that, it just does nothing. Is there any way that I can wait for the second select to load the options first before attempting to select one?

My code so far:

Func WaitForSelect($argForm, $argSelect, $argOptVal)
    While 1
        $options = _IETagNameAllGetCollection(_IEFormElementGetObjByName($argForm, $argSelect))
        For $opt In $options
            Sleep(100)
            If $opt.value = $argOptVal Then
                _IEFormElementOptionSelect(_IEFormElementGetObjByName($argForm, $argSelect), $argOptVal)
                If _IEFormElementGetObjByName($argForm, $argSelect).value = $argOptVal Then
                    ExitLoop 2
                EndIf
            EndIf
        Next
    WEnd 
EndFunc

It works sometimes, sometimes it doesn't. I need something reliable.

Thanks!

[Danp2]

You are making multiple calls to _IEFormElementGetObjByName. Is there a reason that you can't call it once and then use the object reference for subsequent calls, ie:

$oSelect = _IEFormElementGetObjByName($argForm, $argSelect)

$options = _IETagNameAllGetCollection($oSelect)

Also, please provide a better description than "doesn't work". What happens? Does it loop forever in the function? Or what?

[Afaan]

Yeah, I could do that.

And by "doesn't work", I meant that it fails to select the option and just moves on to the next field.

[Danp2]

I wonder if something like this would work better?

Func WaitForSelect($argForm, $argSelect, $argOptVal, $argDelay = 500)
    Local $oSelect, $oOptions, $nCnt1, $nCnt2
    
    $oSelect = _IEFormElementGetObjByName($argForm, $argSelect)
    
    While 1
        $oOptions = _IETagNameAllGetCollection($oSelect)
        $nCnt1 = @extended
        
        Sleep($argDelay)
        
        $oOptions = _IETagNameAllGetCollection($oSelect)
        $nCnt2 = @extended
        
        If $nCnt1 = $nCnt2 Then
            _IEFormElementOptionSelect($oSelect, $argOptVal)
            ExitLoop
        EndIf
    WEnd 
EndFunc

 

[Afaan]

I found a work-around which seems to work fine.

Func SetAjaxSelect($argForm, $argSelect, $argOptVal)
    $theSelect = _IEFormElementGetObjByName($argForm, $argSelect)
    $options = 0
    Do
        $options = _IETagNameAllGetCollection($theSelect)
        Sleep(50)
    Until IsObj($options)
    For $opt in $options
        If $opt.value = $argOptVal Then
            Sleep(200)
            _IEFormElementOptionSelect($theSelect, $argOptVal)
            Return
        EndIf
    Next
EndFunc

 

[Danp2]

Glad you found a working solution. Can you explain why you need the For loop?

[Afaan]

Since the select is being dynamically updated, I need to make sure that the option I am selecting does indeed exist in the option list. That's why I need the For loop.

[Danp2]

How do you detect that the option didn't exist in the calling script?

FWIW, I would have tried removing the loop, calling _IEFormElementOptionSelect, and then checking to see if the call succeeded / failed.