java.beans

Class SimpleBeanInfo

java.lang.Object

java.beans.SimpleBeanInfo

All Implemented Interfaces:

BeanInfo

public class SimpleBeanInfo
extends Object
implements BeanInfo

This is a support class to make it easier for people to provide BeanInfo classes.

It defaults to providing "noop" information, and can be selectively overriden to provide more explicit information on chosen topics. When the introspector sees the "noop" values, it will apply low level introspection and design patterns to automatically analyze the target bean.

Field Summary

Fields inherited from interface java.beans.BeanInfo

ICON_COLOR_16x16, ICON_COLOR_32x32, ICON_MONO_16x16, ICON_MONO_32x32

Constructor Summary

Constructors

Constructor and Description
SimpleBeanInfo()

Method Summary

Modifier and Type	Method and Description
BeanInfo[]	getAdditionalBeanInfo() Claim there are no other relevant BeanInfo objects.
BeanDescriptor	getBeanDescriptor() Deny knowledge about the class and customizer of the bean.
int	getDefaultEventIndex() Deny knowledge of a default event.
int	getDefaultPropertyIndex() Deny knowledge of a default property.
EventSetDescriptor[]	getEventSetDescriptors() Deny knowledge of event sets.
Image	getIcon(int iconKind) Claim there are no icons available.
MethodDescriptor[]	getMethodDescriptors() Deny knowledge of methods.
PropertyDescriptor[]	getPropertyDescriptors() Deny knowledge of properties.
Image	loadImage(String resourceName) This is a utility method to help in loading icon images.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleBeanInfo

public SimpleBeanInfo()

Method Detail

getBeanDescriptor

public BeanDescriptor getBeanDescriptor()

Deny knowledge about the class and customizer of the bean. You can override this if you wish to provide explicit info.

Specified by:

getBeanDescriptor in interface BeanInfo

Returns:

a BeanDescriptor object, or null if the information is to be obtained through the automatic analysis

getPropertyDescriptors

public PropertyDescriptor[] getPropertyDescriptors()

Deny knowledge of properties. You can override this if you wish to provide explicit property info.

Specified by:

getPropertyDescriptors in interface BeanInfo

Returns:

an array of PropertyDescriptor objects, or null if the information is to be obtained through the automatic analysis

getDefaultPropertyIndex

public int getDefaultPropertyIndex()

Deny knowledge of a default property. You can override this if you wish to define a default property for the bean.

Specified by:

getDefaultPropertyIndex in interface BeanInfo

Returns:

index of the default property in the PropertyDescriptor array returned by the getPropertyDescriptors method, or -1 if there is no default property

getEventSetDescriptors

public EventSetDescriptor[] getEventSetDescriptors()

Deny knowledge of event sets. You can override this if you wish to provide explicit event set info.

Specified by:

getEventSetDescriptors in interface BeanInfo

Returns:

an array of EventSetDescriptor objects, or null if the information is to be obtained through the automatic analysis

getDefaultEventIndex

public int getDefaultEventIndex()

Deny knowledge of a default event. You can override this if you wish to define a default event for the bean.

Specified by:

getDefaultEventIndex in interface BeanInfo

Returns:

index of the default event in the EventSetDescriptor array returned by the getEventSetDescriptors method, or -1 if there is no default event

getMethodDescriptors

public MethodDescriptor[] getMethodDescriptors()

Deny knowledge of methods. You can override this if you wish to provide explicit method info.

Specified by:

getMethodDescriptors in interface BeanInfo

Returns:

an array of MethodDescriptor objects, or null if the information is to be obtained through the automatic analysis

getAdditionalBeanInfo

public BeanInfo[] getAdditionalBeanInfo()

Claim there are no other relevant BeanInfo objects. You may override this if you want to (for example) return a BeanInfo for a base class.

Specified by:

getAdditionalBeanInfo in interface BeanInfo

Returns:

an array of BeanInfo objects, or null if there are no additional BeanInfo objects

getIcon

public Image getIcon(int iconKind)

Claim there are no icons available. You can override this if you want to provide icons for your bean.

Specified by:

getIcon in interface BeanInfo

Parameters:

iconKind - the kind of icon requested

Returns:

an image object representing the requested icon, or null if no suitable icon is available

See Also:

BeanInfo.ICON_COLOR_16x16, BeanInfo.ICON_COLOR_32x32, BeanInfo.ICON_MONO_16x16, BeanInfo.ICON_MONO_32x32

loadImage

public Image loadImage(String resourceName)

This is a utility method to help in loading icon images. It takes the name of a resource file associated with the current object's class file and loads an image object from that file. Typically images will be GIFs.

Parameters:

resourceName - A pathname relative to the directory holding the class file of the current class. For example, "wombat.gif".

Returns:

an image object. May be null if the load failed.