Package org.faceless.pdf2.viewer2.util

Class JsonPreferences

java.lang.Object

java.util.prefs.Preferences

java.util.prefs.AbstractPreferences

org.faceless.pdf2.viewer2.util.JsonPreferences

Direct Known Subclasses:

WebswingPreferencesFactory.WebswingPreferences

public class JsonPreferences
extends AbstractPreferences

A Preferences class backed with a Json structure. The sync() and flush() methods do nothing, and should be overriden The load() method will populate this object from a Json structure loaded elsewhere

Field Summary

Fields inherited from class java.util.prefs.AbstractPreferences

lock, newNode

Fields inherited from class java.util.prefs.Preferences

MAX_KEY_LENGTH, MAX_NAME_LENGTH, MAX_VALUE_LENGTH

Constructor Summary

Constructors

Constructor	Description
JsonPreferences(AbstractPreferences parent, String name)

Method Summary

Modifier and Type	Method	Description
protected String[]	childrenNamesSpi()
protected AbstractPreferences	childSpi(String name)
void	flush()
protected void	flushSpi()
protected String	getSpi(String key)
protected String[]	keysSpi()
void	load(Json j)
protected void	putSpi(String key, String value)
protected void	removeNodeSpi()
protected void	removeSpi(String key)
void	setAutoFlush(int ms)	Auto-save the preferences after the specified number of ms.
void	sync()
protected void	syncSpi()
String	toString()

Methods inherited from class java.util.prefs.AbstractPreferences

absolutePath, addNodeChangeListener, addPreferenceChangeListener, cachedChildren, childrenNames, clear, exportNode, exportSubtree, get, getBoolean, getByteArray, getChild, getDouble, getFloat, getInt, getLong, isRemoved, isUserNode, keys, name, node, nodeExists, parent, put, putBoolean, putByteArray, putDouble, putFloat, putInt, putLong, remove, removeNode, removeNodeChangeListener, removePreferenceChangeListener

Methods inherited from class java.util.prefs.Preferences

importPreferences, systemNodeForPackage, systemRoot, userNodeForPackage, userRoot

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonPreferences

public JsonPreferences(AbstractPreferences parent,
                       String name)

Method Detail

setAutoFlush

public void setAutoFlush(int ms)

Auto-save the preferences after the specified number of ms. A number other than zero (eg 250) will batch up changes to the prefs before flushing. Zero to disable.

toString

public String toString()

Overrides:

toString in class AbstractPreferences

load

public void load(Json j)

putSpi

protected void putSpi(String key,
                      String value)

Specified by:

putSpi in class AbstractPreferences

getSpi

protected String getSpi(String key)

Specified by:

getSpi in class AbstractPreferences

removeSpi

protected void removeSpi(String key)

Specified by:

removeSpi in class AbstractPreferences

removeNodeSpi

protected void removeNodeSpi()

Specified by:

removeNodeSpi in class AbstractPreferences

keysSpi

protected String[] keysSpi()

Specified by:

keysSpi in class AbstractPreferences

childrenNamesSpi

protected String[] childrenNamesSpi()

Specified by:

childrenNamesSpi in class AbstractPreferences

childSpi

protected AbstractPreferences childSpi(String name)

Specified by:

childSpi in class AbstractPreferences

syncSpi

protected void syncSpi()

Specified by:

syncSpi in class AbstractPreferences

flushSpi

protected void flushSpi()

Specified by:

flushSpi in class AbstractPreferences

flush

public void flush()
           throws BackingStoreException

Overrides:

flush in class AbstractPreferences

Throws:

BackingStoreException

sync

public void sync()

Overrides:

sync in class AbstractPreferences