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Invalid values in comboBox

18 June, 2008 - 12:19 — David

Hi all,
I'm using the comboBox widget, I need the filter propery but when user enters an invalid value into the input field I have to raise an error, how can I do that?
Is there any way to check if a comboBox contains a value?

Best regards
David

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Invalid values in comboBox

18 June, 2008 - 15:15 — yudi

Hi David,
Could you try to check the value in the change event ?
~Yudi

Hi Yudi, Yes, I could try it

18 June, 2008 - 17:52 — David

Hi Yudi,
Yes, I could try it but I don't know how.

<e:handler event="change">
    var value=this.getProperty('value');
    // and now, how could I check wether my combo contains "value" or not???
</e:handler>

Thanks yudi
David

Hi David, It can be check if

19 June, 2008 - 09:39 — yudi

Hi David,

It can be check if the value is null or empty then give some message or something else.

if(this.getProperty('value')==""){
      alert('your message');
    }

It is also possible to use validation bf:required or b:dataType with your own schema for this.For more info , please have a look http://demo.backbase.com/explorer/#|examples/contentValidation.xml
<b:comboBox bf:required="true" b:dataType="myValidation:country">
   <b:comboBoxOption>Afghanistan</b:comboBoxOption>
   <b:comboBoxOption>Albania</b:comboBoxOption>
</b:comboBox>

~yudi

Yes, I can know if the value

19 June, 2008 - 10:11 — David

Yes, I can know if the value is null or not, but what I want to know is if the value typed by user is one of the comboBoxOption. Because of filter="true", the user can type into the input a value not allowed (Only are allowed the values in the comboBox), and in this case I have to raise a message.

comboBox doesnot match any filter value

23 June, 2008 - 11:51 — andys

Hi David,

The comboBox will do filtering everytime the user type a letter in the inputText. And the method filter actually do filter and set bMatches variable.

You can access the javascript property which is 'this.__bHasMatches'

Next, you can check its value..whether it matches any value or not, if it does not match anything you can raise a message.

you can put this value in 'change' or in 'keyup' or in 'keydown' handler.

Hope this helps,

Andys

OK andys, this is what I

23 June, 2008 - 13:36 — David

OK andys, this is what I wanted.

Thanks and regards
David