Re: [Springframework-rcp-dev] Binding byte array to JTextArea?

[Rogan D. <ro...@da...>]

Arne Limburg wrote:
> Hi Rogan,
> 
> you need to extend AsYouTypeTextComponentAdapter and override 
> adaptedValueChanged with something like this:
>     protected void adaptedValueChanged(Object newValue) {
>         super.adaptedValueChanged(((String)newValue).getBytes());
>     }
> 
> You also have to reimplement TextComponentBinding to use your Adapter 
> and to set the bytes, i.e. you have to change line 41 like this:
>             textComponent.setText(new 
> String((byte[])valueModel.getValue()));
> 
> and implement an appropriate Binder (take a look at TextAreaBinder).
> <http://dict.leo.org/ende?lp=ende&p=eL4jU.&search=appropriate>Of course, 
> if you need you have to handle encoding-specific conversions at the 
> places above.
> 
> Regards,
> 
> Arne

I was looking at TextComponentBinding.java, and noted the Exception 
handling:

protected JComponent doBindControl() {
     final ValueModel valueModel = getValueModel();
     try {
         textComponent.setText((String) valueModel.getValue());
     }
     catch (ClassCastException e) {
         IllegalArgumentException ex = new 
IllegalArgumentException("Class cast exception converting '"
                 + getProperty() + "' property value to string - did you 
install a type converter?");
         ex.initCause(e);
         throw ex;
     }
     // TODO: implement ValueCommitPolicies
     new AsYouTypeTextComponentAdapter(textComponent, valueModel);
     return textComponent;
}

Would it not be sufficient to make an appropriate type converter?

Rogan

> 
> Rogan Dawes schrieb:
>> Hi folks,
>>
>> I'd like to represent a byte[] field as a String in a JTextArea.
>>
>> Can anyone explain how to create such a Binder/Binding?
>>
>> Thanks
>>
>> Rogan
>>
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