ch.randelshofer.quaqua.filechooser

Class OSXCollator

java.lang.Object

java.text.Collator

ch.randelshofer.quaqua.filechooser.OSXCollator

All Implemented Interfaces:

java.lang.Cloneable, java.util.Comparator<java.lang.Object>

public class OSXCollator
extends java.text.Collator

The OSXCollator strives to match the collation rules used by the Mac OS X Finder and of Mac OS X file dialogs.

If we wanted to match the OS X collation rules exactly, we would have to implement the rules for all languages supported by Mac OS X and Java. To reduce the amount of work needed for implementing these rules, the OSXCollator changes the collation rules returned by java.text.Collator.getInstance() to do the following:

• Space characters are treated as primary collation differences
• Hyphen characters are treated as primary collation differences
• Sequence of digits (characters '0' through '9') is treated as a single collation object. The current implementation supports sequences of up to 999 characters length.

If java.text.Collator.getInstance() does not return an instance of java.text.RuleBasedCollator, then the returned collator is used, and only sequences of digits are changed to match the collation rules of Mac OS X.

Version:

1.1 2007-02-10 Improved performance of method expandNumbers.
1.0.1 2005-02-09 Changed the code to make it compilable with Java 1.3.
1.0 23 January 2005 Created.

Author:

Werner Randelshofer

Field Summary

Fields inherited from class java.text.Collator

CANONICAL_DECOMPOSITION, FULL_DECOMPOSITION, IDENTICAL, NO_DECOMPOSITION, PRIMARY, SECONDARY, TERTIARY

Constructor Summary

Constructors

Constructor and Description
OSXCollator() Creates a new instance.
OSXCollator(java.util.Locale locale)

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(java.lang.String source, java.lang.String target)
boolean	equals(java.lang.Object o)
java.text.CollationKey	getCollationKey(java.lang.String source)
int	hashCode()

Methods inherited from class java.text.Collator

clone, compare, equals, getAvailableLocales, getDecomposition, getInstance, getInstance, getStrength, setDecomposition, setStrength

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OSXCollator

public OSXCollator()

Creates a new instance.

OSXCollator

public OSXCollator(java.util.Locale locale)

Method Detail

compare

public int compare(java.lang.String source,
          java.lang.String target)

Specified by:

compare in class java.text.Collator

getCollationKey

public java.text.CollationKey getCollationKey(java.lang.String source)

Specified by:

getCollationKey in class java.text.Collator

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Comparator<java.lang.Object>

Overrides:

equals in class java.text.Collator

hashCode

public int hashCode()

Specified by:

hashCode in class java.text.Collator