UndoTree

java.lang.Object
- org.jline.reader.impl.UndoTree<T>

```
public class UndoTree<T>
extends java.lang.Object
```
Simple undo tree. Note that the first added state can't be undone

Nested Class Summary

Nested Classes
Modifier and Type Class Description

private class UndoTree.Node

Field Summary

Fields
Modifier and Type Field Description

private UndoTree.Node current

private UndoTree.Node parent

private java.util.function.Consumer<T> state

Constructor Summary

Constructors
Constructor Description

UndoTree(java.util.function.Consumer<T> s)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`canRedo()`
`boolean`	`canUndo()`
`void`	`clear()`
`void`	`newState(T state)`
`void`	`redo()`
`void`	`undo()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

state

private final java.util.function.Consumer<T> state

parent
```
private final UndoTree.Node parent
```

current
```
private UndoTree.Node current
```

Constructor Detail

UndoTree

public UndoTree(java.util.function.Consumer<T> s)

Method Detail

clear
```
public void clear()
```

newState
```
public void newState(T state)
```

canUndo
```
public boolean canUndo()
```

canRedo
```
public boolean canRedo()
```

undo
```
public void undo()
```

redo
```
public void redo()
```