Module java.desktop
Package 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 overridden 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.

Since:
1.1

  • Constructor Details

    • SimpleBeanInfo

      public SimpleBeanInfo()
      Constructs a SimpleBeanInfo.

  • Method Details

    • 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:

    • 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 or null if the resource is not found or the resource could not be loaded as an Image