Dialog layouts... (and buttons, toolbars etc.)

Instead of having static HTML create the FCKEditor and plugin dialogs it would be nice if all dialogs was described using the following syntax (just a roughly example):

dialogLayout = {
title : 'Dialog title',
buttons : [{
text : 'Save / Set',
handler : function() {
// functionality
}
},{
text : 'Cancel,
handler : function() {
// functionality
}
}],
panels : [{
text : 'Tab #1',
type : 'borderlayout',
items : [{
...
}]
},{
text : 'Tab #2',
layout : [{
...
}]
}]
}

Take a look at how ExtJS does this.

Why would we want this? Well... as said earlier I would like to use ExtJS's popups, someone else will use FCKEditor standard popups and others will use popups from other APIs. The core FCKEditor should load a plugin to render its dialogs based on this syntax, and I will load another plugin to render it using ExtJS.

Maybe this could also be implemented for toolbars, buttons etc....