com.levigo.jadice.demo
Class JadiceDemoPreferences

java.lang.Object
  com.levigo.jadice.demo.JadiceDemoPreferences

public class JadiceDemoPreferences
extends Object

This class provides some utility methods for the demo preferences. E.g. a method to load and store the list of recent files.

Weak listeners can be registered in cases where de-registration of listeners is not easily possible (see addWeakPreferenceChangeListener(PreferenceChangeListener)).

Auto-Flush mode: This class can automatically flush the preferences on a PreferenceChangeEvent ( see isAutoFlush() / setAutoFlush(boolean) ). By default, this feature is disabled.

Field Summary

static String

PREF_KEY_RECENT_FILE

Method Summary

static void	addWeakPreferenceChangeListener(PreferenceChangeListener listener) Adds a weak PreferenceChangeListener to get notified about preference changes.
static Preferences	getPreferences() This is equivalent to
static List<String>	getRecentlyUsedFiles() Returns a list containing the recently used files.
static boolean	isAutoFlush() Check if auto-flush is enabled
static void	setAutoFlush(boolean autoFlush) Sets the auto-flush to the desired value.
static void	updateRecentFileList(String currentFile) Called when a new file has been opened.

Methods inherited from class java.lang.Object

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

Field Detail

PREF_KEY_RECENT_FILE

public static final String PREF_KEY_RECENT_FILE

See Also:

Constant Field Values

Method Detail

addWeakPreferenceChangeListener

public static void addWeakPreferenceChangeListener(PreferenceChangeListener listener)

Adds a weak PreferenceChangeListener to get notified about preference changes.

Parameters:

listener - - the listener to weakly register

getPreferences

public static Preferences getPreferences()

This is equivalent to

 Preferences.userNodeForPackage(JadiceDemoProperties.class)
 

Returns:

- the Preferences object

isAutoFlush

public static boolean isAutoFlush()

Check if auto-flush is enabled

Returns:

true: auto-flush is enabled; false otherwise

setAutoFlush

public static void setAutoFlush(boolean autoFlush)

Sets the auto-flush to the desired value.

Parameters:

autoFlush -

updateRecentFileList

public static void updateRecentFileList(String currentFile)

Called when a new file has been opened. It will be saved in the list of recently used files.

This method encapsulates the logic to store the list in the preferences.

Parameters:

currentFile - - the file opened.

getRecentlyUsedFiles

public static List<String> getRecentlyUsedFiles()

Returns a list containing the recently used files. The list might contain up to elements.

Returns:

the list of recently used files (newest element at index 0)