# Uses of Interface
javax.help.event.HelpHistoryModelListener

Packages that use HelpHistoryModelListener
Package
Description
javax.help
Supports presentation of online documentation with both content and contextual views of this information.

## Uses of HelpHistoryModelListener in javax.help

Classes in javax.help that implement HelpHistoryModelListener
Modifier and Type
Class
Description
`class`
`BackAction`
`class`
`ForwardAction`
Methods in javax.help with parameters of type HelpHistoryModelListener
Modifier and Type
Method
Description
`void`
DefaultHelpHistoryModel.`addHelpHistoryModelListener(HelpHistoryModelListener l)`
Adds a listener for the HelpHistoryModelEvent posted after the model has changed.
`void`
HelpHistoryModel.`addHelpHistoryModelListener(HelpHistoryModelListener l)`
Adds a listener for the HelpHistoryModelEvent posted after the model has changed.
`void`
DefaultHelpHistoryModel.`removeHelpHistoryModelListener(HelpHistoryModelListener l)`
Removes a listener previously added with `addHelpHistoryModelListener`
`void`
HelpHistoryModel.`removeHelpHistoryModelListener(HelpHistoryModelListener l)`
Removes a listener previously added with `addHelpHistoryModelListener`