oracle.ide.controls.elementtree
Class Filter

java.lang.Object
  oracle.ide.controls.elementtree.Filter

public class Filter
extends java.lang.Object

A Filter extracts the children from a parent Element and/or filters the produce of other filters.
When an element is expanded, the element tree collects all the filters registered for the element's class and its supertypes. The distinct result of all the getChildren() is combined and then filtered by calls to isValid() for each collected filter.
Filters are registered through the ElementTreeRootNode's ElementRegistry. Example:

   elementTreeRootNode.getElementRegistry().register(MyNode.class, new MyNodeFilter);
 

Constructor Summary

Filter()

Method Summary

java.util.List<Element>	getChildren(Element parent) Produces the children elements.
boolean	isValid(Element child) Filters the child elements.

Methods inherited from class java.lang.Object

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

Constructor Detail

Filter

public Filter()

Method Detail

getChildren

public java.util.List<Element> getChildren(Element parent)

Produces the children elements.

Parameters:

parent - the parent element

Returns:

a list of children or null.

isValid

public boolean isValid(Element child)

Filters the child elements.

Parameters:

child - the child to check

Returns:

false to reject the child.