com.imagero.gui.swing.tree.handler
Interface Handler

All Known Implementing Classes:

FileHandler, HTTPHandler, URLFileHandler, com.imagero.gui.swing.tree.handler.ZipHandler

public interface Handler

HTreeNode delegates work to Handler.
Handler can populate and refresh HTreeNode's chiidren
Such important things as isLeaf(), getAllowsChildren() and toString() also delegated to Handler.
HandlerFactory is used to get proper Handler for HTreeNode content.
Handler should register itself by HandlerFactory.
To determine if particular Handler can handle supplied Object, HandlerFactory calls Handler's method canHandle(Object o). If HandlerFactory finds more then 1 Handler, then method isGeneric() used to determine which Handler should be used. For example for *.zip file FileHandler and FileZipHandler returns true from canHandle(), however FileHandler is generic and so FileZipHandler is choosed by HandlerFactory

Method Summary

boolean	canHandle(java.lang.Object o)
boolean	getAllowsChildren(HTreeNode node)
TreeNodeComparator	getComparator()
boolean	isGeneric()
boolean	isLeaf(HTreeNode node)
boolean	populateChildren(HTreeNode node, boolean descend, boolean refreshNodes)
java.lang.String	toString(HTreeNode node)

Method Detail

canHandle

public boolean canHandle(java.lang.Object o)

getAllowsChildren

public boolean getAllowsChildren(HTreeNode node)

getComparator

public TreeNodeComparator getComparator()

isGeneric

public boolean isGeneric()

isLeaf

public boolean isLeaf(HTreeNode node)

populateChildren

public boolean populateChildren(HTreeNode node,
                                boolean descend,
                                boolean refreshNodes)
                         throws java.io.IOException

Throws:

java.io.IOException

toString

public java.lang.String toString(HTreeNode node)