Naked Objects create applications without custom coded GUIs. The one interface is directly listing the members of an object; values can be modified, references followed, and methods executed.
The look and feel is vastly improved by using [jQuery.UI](<http://ui.jquery.com/), albeit in beta (I did make one small patch, which appears to be fixed in the upcoming code base.) I also did some source-code formatting with Chili.
Function editing will probably be a long shot. It will probably happen only in very restrained circumstances if at all - I don't know of any way to get at the previous function's scope of definition, so you won't necessarily have access to it's variables.
Simple strings and numbers can be edited in-place. The changes will affect the object, with a couple of caveats. First, related fields in i.e., DOM objects won't update; you can close and re-open a browser if necessary. All changes are transient; I haven't even looked at how saving might work when running on a local filesystem. Most of the things that can be done now are toys, but I do have one pointer to a text element on the page, which can be updated.
Limitations and Bugs
- Only declared function arguments can be supplied
- Modified state can't be saved
- IE: function pretty-printing
- IE: edit in-place doesn't seem to be calling call-backs
- IE error on hasOwnProperty
- DontEnum properies aren't shown
- It remains to be seen if functions can be edited