org.jfree.util
Class ResourceBundleSupport

java.lang.Object
  org.jfree.util.ResourceBundleSupport

public abstract class ResourceBundleSupport

extends java.lang.Object

An utility class to ease up using property-file resource bundles.

The class support references within the resource bundle set to minimize the occurence of duplicate keys. References are given in the format:

 a.key.name=@referenced.key
 

A lookup to a key in an other resource bundle should be written by

 a.key.name=@@resourcebundle_name@referenced.key
 

Constructor Summary

protected

ResourceBundleSupport(java.lang.String resourceBase) Creates a new instance.

Method Summary

javax.swing.JMenu	createMenu(java.lang.String keyPrefix) Returns a JMenu created from a resource bundle definition.
javax.swing.Icon	createTransparentIcon(int width, int height) Creates a transparent icon.
java.lang.String	formatMessage(java.lang.String key, java.lang.Object parameter) Formats the message stored in the resource bundle (using a MessageFormat).
java.lang.String	formatMessage(java.lang.String key, java.lang.Object[] parameters) Formats the message stored in the resource bundle (using a MessageFormat).
java.lang.String	formatMessage(java.lang.String key, java.lang.Object par1, java.lang.Object par2) Formats the message stored in the resource bundle (using a MessageFormat).
javax.swing.Icon	getIcon(java.lang.String key) Returns an unscaled icon.
javax.swing.Icon	getIcon(java.lang.String key, boolean large) Returns an scaled icon suitable for buttons or menus.
javax.swing.KeyStroke	getKeyStroke(java.lang.String key) Returns the keystroke stored at the given resourcebundle key.
java.lang.Integer	getMnemonic(java.lang.String key) Returns the mnemonic stored at the given resourcebundle key.
protected java.lang.String	getResourceBase() The base name of the resource bundle.
java.net.URL	getResourceURL(java.lang.String key) Returns a URL pointing to a resource located in the classpath.
java.lang.String	getString(java.lang.String key) Gets a string for the given key from this resource bundle or one of its parents.
protected java.lang.String	internalGetString(java.lang.String key) Performs the lookup for the given key.

Methods inherited from class java.lang.Object

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

Constructor Detail

ResourceBundleSupport

protected ResourceBundleSupport(java.lang.String resourceBase)

Creates a new instance.

Method Detail

getResourceBase

protected final java.lang.String getResourceBase()

The base name of the resource bundle.

Returns:

the resource bundle's name.

getString

public java.lang.String getString(java.lang.String key)

Gets a string for the given key from this resource bundle or one of its parents. If the key is a link, the link is resolved and the referenced string is returned instead.

Parameters:

key - the key for the desired string

Returns:

the string for the given key

Throws:

java.lang.NullPointerException - if key is null

java.util.MissingResourceException - if no object for the given key can be found

java.lang.ClassCastException - if the object found for the given key is not a string

internalGetString

protected java.lang.String internalGetString(java.lang.String key)

Performs the lookup for the given key. If the key points to a link the link is resolved and that key is looked up instead.

Parameters:

key - the key for the string

Returns:

the string for the given key

getIcon

public javax.swing.Icon getIcon(java.lang.String key,
                                boolean large)

Returns an scaled icon suitable for buttons or menus.

Parameters:

key - the name of the resource bundle key

large - true, if the image should be scaled to 24x24, or false for 16x16

Returns:

the icon.

getIcon

public javax.swing.Icon getIcon(java.lang.String key)

Returns an unscaled icon.

Parameters:

key - the name of the resource bundle key

Returns:

the icon.

getMnemonic

public java.lang.Integer getMnemonic(java.lang.String key)

Returns the mnemonic stored at the given resourcebundle key. The mnemonic should be either the symbolic name of one of the KeyEvent.VK_* constants (without the 'VK_') or the character for that key.

For the enter key, the resource bundle would therefore either contain "ENTER" or "\n".

 a.resourcebundle.key=ENTER
 an.other.resourcebundle.key=\n
 

Parameters:

key - the resourcebundle key

Returns:

the mnemonic

getKeyStroke

public javax.swing.KeyStroke getKeyStroke(java.lang.String key)

Returns the keystroke stored at the given resourcebundle key.

The keystroke will be composed of a simple key press and the plattform's MenuKeyMask.

The keystrokes character key should be either the symbolic name of one of the KeyEvent.VK_* constants (without the 'VK_') or the character for that key.

For the enter key, the resource bundle would therefore either contain "ENTER" or "\n".

 a.resourcebundle.key=ENTER
 an.other.resourcebundle.key=\n
 

Parameters:

key - the resourcebundle key

Returns:

the mnemonic

See Also:

Toolkit.getMenuShortcutKeyMask()

createMenu

public javax.swing.JMenu createMenu(java.lang.String keyPrefix)

Returns a JMenu created from a resource bundle definition.

The menu definition consists of two keys, the name of the menu and the mnemonic for that menu. Both keys share a common prefix, which is extended by ".name" for the name of the menu and ".mnemonic" for the mnemonic.

 # define the file menu
 menu.file.name=File
 menu.file.mnemonic=F
 

The menu definition above can be used to create the menu by calling createMenu ("menu.file").

Parameters:

keyPrefix - the common prefix for that menu

Returns:

the created menu

getResourceURL

public java.net.URL getResourceURL(java.lang.String key)

Returns a URL pointing to a resource located in the classpath. The resource is looked up using the given key.

Example: The load a file named 'logo.gif' which is stored in a java package named 'org.jfree.resources':

 mainmenu.logo=org/jfree/resources/logo.gif
 

The URL for that file can be queried with: getResource("mainmenu.logo");.

Parameters:

key - the key for the resource

Returns:

the resource URL

createTransparentIcon

public javax.swing.Icon createTransparentIcon(int width,
                                              int height)

Creates a transparent icon. The Icon can be used for aligning menu items.

Parameters:

width - the width of the new icon

height - the height of the new icon

Returns:

the created transparent icon.

formatMessage

public java.lang.String formatMessage(java.lang.String key,
                                      java.lang.Object parameter)

Formats the message stored in the resource bundle (using a MessageFormat).

Parameters:

key - the resourcebundle key

parameter - the parameter for the message

Returns:

the formated string

formatMessage

public java.lang.String formatMessage(java.lang.String key,
                                      java.lang.Object par1,
                                      java.lang.Object par2)

Formats the message stored in the resource bundle (using a MessageFormat).

Parameters:

key - the resourcebundle key

par1 - the first parameter for the message

par2 - the second parameter for the message

Returns:

the formated string

formatMessage

public java.lang.String formatMessage(java.lang.String key,
                                      java.lang.Object[] parameters)

Formats the message stored in the resource bundle (using a MessageFormat).

Parameters:

key - the resourcebundle key

parameters - the parameter collection for the message

Returns:

the formated string