Allows developers to provide support for undo/redo in applications such as text editors.
Related DocumentationFor overviews, tutorials, examples, guides, and tool documentation, please see:
- Implementing Undo and Redo, a section in The Java Tutorial
ClassDescriptionAn abstract implementation of
UndoableEdit, implementing simple responses to all boolean methods in that interface.Thrown when an UndoableEdit is told to
redo()and can't.Thrown when an UndoableEdit is told to
undo()and can't.A concrete subclass of AbstractUndoableEdit, used to assemble little UndoableEdits into great big ones.StateEdit is a general edit for objects that change state.StateEditable defines the interface for objects that can have their state undone/redone by a StateEdit.An
UndoableEditrepresents an edit.A support class used for managing
UndoManagermanages a list of
UndoableEdits, providing a way to undo or redo the appropriate edits.