Undo the most recent change, if there is any change to undo. @return {@code true} if a change was undone, {@code false} otherwise.

Indicates whether this UndoManager's current position within its history is the same as the last marked position.

Creates an {@link UndoManager} with unlimited history. For description of parameters, see {@link #createSingleChangeUM(EventStream, Function, Consume

Redo previously undone change, if there is any change to redo. @return {@code true} if a change was redone, {@code false} otherwise.

Creates an {@link UndoManager} with unlimited history. For description of parameters, see {@link #createMultiChangeUM(EventStream, Function, Consumer

Checks whether this history position is still valid. A position becomes invalid when <ul> <li>the change immediately preceding the position is undon

Returns the current position within this UndoManager's history.

Sets this UndoManager's mark to the current position. This method is a convenient shortcut for {@code getCurrentPosition().mark()}.

Helper method for reducing code duplication @param isChangeAvailable same as `isUndoAvailable()` [Undo] or `isRedoAvailable()` [Redo] @param changeTo

Returns the previous item and decreases the current position by 1.

Prevents the next change from being merged with the latest one.

Creates an {@link UndoManager} with no history: all changes emitted from {@code changeStream} will be immediately forgotten. Therefore, the returned {

Creates an {@link UndoManager} with bounded history. When at full capacity, a new change will cause the oldest change to be forgotten. <p>For descrip

Returns the next item and increases the current position by 1.

Returns the next item. Current position stays unchanged.

Returns the previous item. Current position stays unchanged.

Indicates whether there is a change that can be redone.

Indicates whether there is a change that can be undone.

Stops observing change events.

Creates an {@link UndoManager} that tracks lists of changes emitted from {@code changeStream}. @param <C> representation of a change @param invert In

Creates an {@link UndoManager} that tracks changes emitted from {@code changeStream}. @param <C> representation of a change @param invert Inverts a c

Creates a factory for {@link UndoManager}s with bounded history. When at full capacity, a new change will cause the oldest change to be forgotten. @s

Creates an {@link UndoManager} with bounded history. When at full capacity, a new change will cause the oldest change to be forgotten. <p>For descrip

Forgets all changes prior to the current position in the history.