RMUndoer (ReportMill 13 API)

java.lang.Object
- com.reportmill.base.RMUndoer

```
public class RMUndoer
extends java.lang.Object
```
RMUndoer - this object manages undo by keeping lists of property changes.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static interface RMUndoer.Selection
An interface for undo/redo selection.

Nested Classes
Modifier and Type	Class and Description
`static interface`	`RMUndoer.Selection` An interface for undo/redo selection.

Constructor Summary

Constructors
Constructor and Description

RMUndoer()
Creates a new undoer.

Constructors
Constructor and Description
`RMUndoer()` Creates a new undoer.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addPropertyChange(java.beans.PropertyChangeEvent anEvent)` Adds a property change.
`void`	`disable()` Disables undoer so it can receive new changes.
`void`	`enable()` Enables undoer.
`RMUndoSet`	`getActiveUndoSet()` Returns the active undo set.
`java.lang.Object`	`getRedoSelection()` Returns the list of objects that should be selected after current undo is redone.
`RMUndoSet`	`getRedoSetLast()` Returns the last redo.
`java.util.List<RMUndoSet>`	`getRedoSets()` Returns the list of redo sets.
`java.lang.Object`	`getUndoSelection()` Returns the list of objects that should be selected after current undo is fired.
`RMUndoSet`	`getUndoSetLast()` Returns the last undo.
`java.util.List<RMUndoSet>`	`getUndoSets()` Returns the list of undo sets.
`boolean`	`hasUndos()` Returns whether undoer has undoable changes stored away.
`boolean`	`isBenignChange(java.lang.String aString)` Returns whether a given change doesn't really effect signficant state change.
`boolean`	`isDuplicate(java.lang.String aTitle, RMObject anObj)` Returns whether given title is title of last undo.
`boolean`	`isEnabled()` Returns whether undoer is disabled.
`RMUndoSet`	`redo()` Pops last redo set off stack and has it update all changed objects it contains.
`void`	`reset()` Resets the undoer to its initial state (good to do when a document is saved).
`void`	`saveChanges()` Pushes current undo record on the stack and opens new one.
`void`	`setActiveUndoSet(RMUndoSet anUndoSet)` Sets the active event (presumably from undo sets list).
`void`	`setRedoSelection(java.lang.Object aList)` Sets the list of objects that should be selected after current undo is redone.
`void`	`setUndoSelection(java.lang.Object aList)` Sets the list of objects that should be selected after current undo is fired.
`void`	`setUndoTitle(java.lang.String aString)` Sets the title of the current undo.
`java.lang.String`	`toString()` Standard toString implementation.
`RMUndoSet`	`undo()` Pops last undo set off stack an has it update all changed objects it contains.

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

- Constructor Detail
  - RMUndoer
```
public RMUndoer()
```
    Creates a new undoer.
- Method Detail
  - getActiveUndoSet
```
public RMUndoSet getActiveUndoSet()
```
    Returns the active undo set.
  - setActiveUndoSet
```
public void setActiveUndoSet(RMUndoSet anUndoSet)
```
    Sets the active event (presumably from undo sets list).
  - setUndoTitle
```
public void setUndoTitle(java.lang.String aString)
```
    Sets the title of the current undo.
  - getUndoSets
```
public java.util.List<RMUndoSet> getUndoSets()
```
    Returns the list of undo sets.
  - getRedoSets
```
public java.util.List<RMUndoSet> getRedoSets()
```
    Returns the list of redo sets.
  - getUndoSetLast
```
public RMUndoSet getUndoSetLast()
```
    Returns the last undo.
  - getRedoSetLast
```
public RMUndoSet getRedoSetLast()
```
    Returns the last redo.
  - getUndoSelection
```
public java.lang.Object getUndoSelection()
```
    Returns the list of objects that should be selected after current undo is fired.
  - setUndoSelection
```
public void setUndoSelection(java.lang.Object aList)
```
    Sets the list of objects that should be selected after current undo is fired.
  - getRedoSelection
```
public java.lang.Object getRedoSelection()
```
    Returns the list of objects that should be selected after current undo is redone.
  - setRedoSelection
```
public void setRedoSelection(java.lang.Object aList)
```
    Sets the list of objects that should be selected after current undo is redone.
  - addPropertyChange
```
public void addPropertyChange(java.beans.PropertyChangeEvent anEvent)
```
    Adds a property change.
  - saveChanges
```
public void saveChanges()
```
    Pushes current undo record on the stack and opens new one.
  - undo
```
public RMUndoSet undo()
```
    Pops last undo set off stack an has it update all changed objects it contains.
  - redo
```
public RMUndoSet redo()
```
    Pops last redo set off stack and has it update all changed objects it contains.
  - isEnabled
```
public boolean isEnabled()
```
    Returns whether undoer is disabled.
  - disable
```
public void disable()
```
    Disables undoer so it can receive new changes.
  - enable
```
public void enable()
```
    Enables undoer.
  - reset
```
public void reset()
```
    Resets the undoer to its initial state (good to do when a document is saved).
  - isBenignChange
```
public boolean isBenignChange(java.lang.String aString)
```
    Returns whether a given change doesn't really effect signficant state change.
  - hasUndos
```
public boolean hasUndos()
```
    Returns whether undoer has undoable changes stored away.
  - isDuplicate
```
public boolean isDuplicate(java.lang.String aTitle,
                  RMObject anObj)
```
    Returns whether given title is title of last undo.
  - toString
```
public java.lang.String toString()
```
    Standard toString implementation.
    
    Overrides:
    
    toString in class java.lang.Object

Class RMUndoer

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RMUndoer

Method Detail

getActiveUndoSet

setActiveUndoSet

setUndoTitle

getUndoSets

getRedoSets

getUndoSetLast

getRedoSetLast

getUndoSelection

setUndoSelection

getRedoSelection

setRedoSelection

addPropertyChange

saveChanges

undo

redo

isEnabled

disable

enable

reset

isBenignChange

hasUndos

isDuplicate

toString