psdi.workflow.util

Class IconHandler

java.lang.Object

psdi.workflow.util.IconHandler

public class IconHandler
extends java.lang.Object

This class is used to perform common functions on icons. Icons can be loaded by supplying an identifying string. string is looked up in a properties file and mapped to the defined icon. It is possible to set/get a default icon handler. This allows the icon handler to be installed at startup and then used by any code requiring loading of a standard icon.

Constructor Summary

Constructors

Constructor and Description
IconHandler() Create an icon handler
IconHandler(java.util.PropertyResourceBundle resources) Create an icon handler with a property file which holds the mapping of icon names to resources.

Method Summary

Modifier and Type	Method and Description
java.awt.Cursor	buildCursorByName(java.lang.String name, java.awt.Point hotspot) Builds a cursor from the named gif image
static IconHandler	getDefaultIconHandler() Gets the default icon handler
javax.swing.Icon	getGrayIcon(javax.swing.Icon icon) Gets a gray version of an icon.
javax.swing.Icon	loadIconById(java.lang.String id) This method loads an icon using an identifier.
javax.swing.Icon	loadIconByName(java.lang.String name) This method loads an icon from a named resource.
void	setDebug(boolean debug) Sets the debug flag
static void	setDefaultIconHandler(IconHandler defaultIconHandler) Sets the default icon handler
void	setResources(java.util.PropertyResourceBundle resources) Sets the resource bundle

Methods inherited from class java.lang.Object

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

Constructor Detail

IconHandler

public IconHandler()

Create an icon handler

IconHandler

public IconHandler(java.util.PropertyResourceBundle resources)

Create an icon handler with a property file which holds the mapping of icon names to resources.

Parameters:

resources - Resource bundle

Method Detail

loadIconById

public javax.swing.Icon loadIconById(java.lang.String id)
                              throws java.io.IOException

This method loads an icon using an identifier.

Parameters:

id - The icon indentifier

Returns:

The icon

Throws:

java.io.IOException - Thrown by the resource loading code

loadIconByName

public javax.swing.Icon loadIconByName(java.lang.String name)
                                throws java.io.IOException

This method loads an icon from a named resource.

Parameters:

name - The resource name

Returns:

The icon

Throws:

java.io.IOException - Thrown by the resource loading code

getGrayIcon

public javax.swing.Icon getGrayIcon(javax.swing.Icon icon)

Gets a gray version of an icon. This achieved by turning all 'dark' colors into a dark gray , the others into the standard gray background and adding a white pixel below and to the right of a dark pixel if the pixel down and to the right is not also dark. This gives the effect of an incised image.

Parameters:

icon - The icon to gray out

Returns:

The grayed out icon

buildCursorByName

public java.awt.Cursor buildCursorByName(java.lang.String name,
                                         java.awt.Point hotspot)
                                  throws java.io.IOException

Builds a cursor from the named gif image

Parameters:

name - The resource name for the image

hotspot - The cursor hotspot

Returns:

the cursor

Throws:

java.io.IOException - thrown by the loadImageByName call

setDefaultIconHandler

public static void setDefaultIconHandler(IconHandler defaultIconHandler)

Sets the default icon handler

Parameters:

iconHandler - The new default icon handler

getDefaultIconHandler

public static IconHandler getDefaultIconHandler()

Gets the default icon handler

Returns:

The default icon handler

setResources

public void setResources(java.util.PropertyResourceBundle resources)

Sets the resource bundle

Parameters:

resource - The resource bundle

setDebug

public void setDebug(boolean debug)

Sets the debug flag

Parameters:

resource - The resource bundle