javax.help
Class DefaultHelpHistoryModel

java.lang.Object
  javax.help.DefaultHelpHistoryModel

All Implemented Interfaces:

java.io.Serializable, java.util.EventListener, HelpModelListener, HelpHistoryModel

public class DefaultHelpHistoryModel
extends java.lang.Object
implements HelpHistoryModel

DefaultHelpHistoryModel is default implementation of HelpHistoryModel interface

See Also:

Serialized Form

Field Summary

protected JHelp	help
protected HelpModel	helpModel
protected java.util.Vector	history
protected int	historyIndex
protected EventListenerList	listenerList

Constructor Summary

DefaultHelpHistoryModel(JHelp help)
Creates new DefaultHelpHistoryModel for given JHelp

Method Summary

void	addHelpHistoryModelListener(HelpHistoryModelListener l) Adds a listener for the HelpHistoryModelEvent posted after the model has changed.
void	discard() Discards a history
protected void	fireHistoryChanged(java.lang.Object source, boolean previous, boolean next) Fires the history change
java.util.Vector	getBackwardHistory() Returns a backward history vector
java.util.Vector	getForwardHistory() Returns a forward history vector
java.util.Vector	getHistory() Returns a history
int	getIndex() Returns a current history position
protected HelpModel	getModel() Returns HelpModel
void	goBack() Sets the previous histroy entry
void	goForward() Sets the next history entry
void	idChanged(HelpModelEvent e) Tells the listener that the current ID in the HelpModel has changed.
void	removeHelpHistoryModelListener(HelpHistoryModelListener l) Removes a listener previously added with addHelpHistoryModelListener
void	removeHelpSet(HelpSet hs) Removes entries related to removed HelpSet from history
void	removeLastEntry() Removes the last history entry
void	setHelpModel(HelpModel model) Sets a new HelpModel
void	setHistoryEntry(int index) Sets the current history entry

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

history

protected java.util.Vector history

historyIndex

protected int historyIndex

helpModel

protected HelpModel helpModel

listenerList

protected EventListenerList listenerList

help

protected JHelp help

Constructor Detail

DefaultHelpHistoryModel

public DefaultHelpHistoryModel(JHelp help)

Creates new DefaultHelpHistoryModel for given JHelp

Parameters:

help - The JHelp

Method Detail

setHelpModel

public void setHelpModel(HelpModel model)

Sets a new HelpModel

Specified by:

setHelpModel in interface HelpHistoryModel

Parameters:

model - The new HelpModel

removeHelpHistoryModelListener

public void removeHelpHistoryModelListener(HelpHistoryModelListener l)

Removes a listener previously added with addHelpHistoryModelListener

Specified by:

removeHelpHistoryModelListener in interface HelpHistoryModel

Parameters:

l - The listener to remove.

See Also:

HelpHistoryModel.addHelpHistoryModelListener(javax.help.event.HelpHistoryModelListener)

addHelpHistoryModelListener

public void addHelpHistoryModelListener(HelpHistoryModelListener l)

Adds a listener for the HelpHistoryModelEvent posted after the model has changed.

Specified by:

addHelpHistoryModelListener in interface HelpHistoryModel

Parameters:

l - The listener to add.

See Also:

HelpHistoryModel.removeHelpHistoryModelListener(javax.help.event.HelpHistoryModelListener)

discard

public void discard()

Discards a history

Specified by:

discard in interface HelpHistoryModel

getHistory

public java.util.Vector getHistory()

Returns a history

Specified by:

getHistory in interface HelpHistoryModel

Returns:

The vector of history entries

removeLastEntry

public void removeLastEntry()

Removes the last history entry

getIndex

public int getIndex()

Returns a current history position

Specified by:

getIndex in interface HelpHistoryModel

Returns:

The history index

goForward

public void goForward()

Sets the next history entry

Specified by:

goForward in interface HelpHistoryModel

goBack

public void goBack()

Sets the previous histroy entry

Specified by:

goBack in interface HelpHistoryModel

getForwardHistory

public java.util.Vector getForwardHistory()

Returns a forward history vector

Specified by:

getForwardHistory in interface HelpHistoryModel

Returns:

The vector of forward history entries

getBackwardHistory

public java.util.Vector getBackwardHistory()

Returns a backward history vector

Specified by:

getBackwardHistory in interface HelpHistoryModel

Returns:

The vector of backward history entries

setHistoryEntry

public void setHistoryEntry(int index)

Sets the current history entry

Specified by:

setHistoryEntry in interface HelpHistoryModel

Parameters:

index - The index of history entry

fireHistoryChanged

protected void fireHistoryChanged(java.lang.Object source,
                                  boolean previous,
                                  boolean next)

Fires the history change

idChanged

public void idChanged(HelpModelEvent e)

Tells the listener that the current ID in the HelpModel has changed. All highlights from the previous location change at this point.

Specified by:

idChanged in interface HelpModelListener

Parameters:

e - The event

removeHelpSet

public void removeHelpSet(HelpSet hs)

Removes entries related to removed HelpSet from history

Specified by:

removeHelpSet in interface HelpHistoryModel

Parameters:

hs - The removed HelpSet

getModel

protected HelpModel getModel()

Returns HelpModel

Returns:

The HelpModel