Dynamically enable a field based on a selected table row

Hi everyone.
I'm getting really confused right now, please show me the right way. My approach may be, and probably is, wrong since I am self learning this and all I have is an ASP.NET background.
I have a page with a table in it. I've created a DataControl for a collection I've made and mapped it to the table. I added a column that shows an "edit" button. On it's click, I open a popup that shows the selected row's data. Naviguation controls are also present on the popup.
This is working fine.
My problem comes in the popup. Each row has multiples fields. These fields, shown on the popup, need to dynamically be enable/disable. To toggle those field, the only way I can see right now is to have a function that takes into parameter the rowId and the fieldName. Based on those two fields, I can get the necessary information to know if I need to enable or disable the control.
What I was aiming for, but then again I totally failed, was to have that function called on the "enabled" EL Expression, returning a Boolean.
Now that this has been said, can someone guide my on how to dynamically enable/disable each field based on the selected row.
Thanks !

Above +
why don't you create a bean method that returns a Boolean ans through EL Expression Builder select the method to this property.
btw .. on which components are you setting this?
Also,
If there is business logic that prohibits to update this object unless that is met.. you can also do it as..
In EOImpl .. override isAttributeUpdateable(int i) method eg:
@Override
public boolean isAttributeUpdateable(int i) {
if(i == this.ENAME && "KING".equalsIgnoreCase(this.getEname())){
return true;
}else
return super.isAttributeUpdateable(i);
and then in UI for the component say
ReadOnly = #{bindings.Ename.updateable}
Or, In UI
disable = #{ bindings.Ename.attributeValue == 'KING' & bindings.Mrg.attributeValue == null ? true : false}
adf does provides many ways to do it ..
Cheers, Amit

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Hi Gayathri,
Gayathri Venugopal wrote:
Hi,
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Hi Gayathri,
Gayathri Venugopal wrote:
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