This is the standard function that i use,
public boolean isTheElemeentEditable(String lebel){
WebElementFacade element = ""; //enter a way to identify element.
try{
element.sendKeys("test");
if(element.getValue().equals("test"))
return true;
return false;
}catch (WebDriverException wde){
return false;
}
}
it helps with all kind of elements.