Can I disable the refactor preview in Eclipse?

When renaming a variable using Eclipse, I always get a popup dialog showing me a preview of the refactoring. Is there some way I can disable this popup dialog? In other words, I want to place the cursor over a variable name, press alt+shift+r, edit the variable name, press enter, and have the renaming take place without ever seeing the preview. Is there some preference or setting for this?

I"m using Eclipse 3.6 (Helios)

UPDATE:

To test this, I did the following. I created a new Java Project and added the following class to the package.

public class TestRename{
    private int var;
}

This i开发者_如何学编程s the only code in the project and still when I try to rename var I get a preview dialog in which I have to click "OK" to make the change. I'm pretty sure this wasn't the default behavior in Eclipse, but I must have edited the defaults somehow. I just don't know what I did or how to reset the preview behavior of the refactor.

There is a preference under "Java" for this called "Rename in editor without dialog". If this is not selected, the rename dialog will show up every time.

I'm also using Helios, a dialog only appears when you are potentially creating a name conflict or refactoring code that has compile errors.