You can definitely implement all of that in iced. The `text_editor` widget offers cut, copy, paste off-the-shelf and undo/redo would be a matter of keeping a stack of the "input changed" messages and popping off changes to undo/redo them.

The library is pretty low level so there's a bit of legwork that the developer needs to do in order to implement things that you get for free in, say, a browser. It's a tradeoff, but I think one that tends to provide more advantages than disadvantages.