This week's book giveaways are in the Refactoring and Agile forums. We're giving away four copies each of Re-engineering Legacy Software and Docker in Action and have the authors on-line! See this thread and this one for details.
How do I get an UndoableEdit to absorb another UE?
posted 15 years ago
I've implemented Swing's default Undo/redo functions in a text editor (using UndoManager, UndoableEditListener, etc.) but find that the default impementation can only undo one character at a time. I see that UndoableEdit has a method .addEdit() that allows it to absorb another UE, creating a "bigger" UE. Unfortunately, I can't seem to get it to work. When I call .addEdit(), it returns false, indicating that the UE can't absorb anything. Can anyone tell me how to get this to work? Thanks!
There's nothing more dangerous than a resourceful idiot. ---Dilbert