HelpHistoryModelEvent

java.lang.Object
- java.util.EventObject
- - javax.help.event.HelpHistoryModelEvent

All Implemented Interfaces:

java.io.Serializable
```
public class HelpHistoryModelEvent
extends java.util.EventObject
```
Notifies interested parties that a change in a Help History Model source has occurred.

See Also:

Serialized Form

Field Summary
- Fields inherited from class java.util.EventObject
  source

Constructor Summary

Constructors
Constructor	Description
`HelpHistoryModelEvent(java.lang.Object source, boolean previous, boolean next)`	Represents a history change

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isNext()`	Returns if action "next" is allowed
`boolean`	`isPrevious()`	Returns if action "previous" is allowed.

Methods inherited from class java.util.EventObject
getSource, toString

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

- Constructor Detail
  - HelpHistoryModelEvent
```
public HelpHistoryModelEvent(java.lang.Object source,
                             boolean previous,
                             boolean next)
```
    Represents a history change
    
    Parameters:
    
    source - The source for this event.
    
    previous - If true a previous action is allowed.
    
    next - If true a next action is allowed.
    
    Throws:
    
    java.lang.IllegalArgumentException - if source is null.
- Method Detail
  - isPrevious
```
public boolean isPrevious()
```
    Returns if action "previous" is allowed.
    
    Returns:
    
    True if action is allowed, false otherwise.
  - isNext
```
public boolean isNext()
```
    Returns if action "next" is allowed
    
    Returns:
    
    True if action is allowed, false otherwise.