com.alee.extended.tree

Interface AsyncTreeDataProvider<E extends AsyncUniqueNode>

Type Parameters:

E - custom node type

All Known Implementing Classes:

AbstractAsyncTreeDataProvider, FileTreeDataProvider, SampleAsyncDataProvider

public interface AsyncTreeDataProvider<E extends AsyncUniqueNode>

This interface provides methods for asynchronous tree data retrieval.

See Also:

WebAsyncTree, AsyncTreeModel

Method Summary

Modifier and Type	Method and Description
java.util.Comparator<E>	getChildrenComparator(E node) Returns child nodes comparator for the specified asynchronous tree node.
com.alee.utils.compare.Filter<E>	getChildrenFilter(E node) Returns child nodes filter for the specified asynchronous tree node.
E	getRoot() Returns asynchronous tree root node.
boolean	isLeaf(E node) Returns whether the specified node is leaf (doesn't have any children) or not.
void	loadChildren(E node, ChildrenListener<E> listener) Starts loading child nodes for the specified asynchronous tree node.

Method Detail

getRoot

E getRoot()

Returns asynchronous tree root node. This request uses the EDT and should be processed quickly.

Returns:

root node

loadChildren

void loadChildren(E node,
                  ChildrenListener<E> listener)

Starts loading child nodes for the specified asynchronous tree node. When you finish loading children for the specified node or you failed to load them, simply inform the listener about that. This request uses a separate thread and might take a lot of time to process without having any UI issues.

Parameters:

node - parent node

listener - children loading progress listener

getChildrenComparator

java.util.Comparator<E> getChildrenComparator(E node)

Returns child nodes comparator for the specified asynchronous tree node. No sorting applied to children in case null is returned.

Parameters:

node - parent node

Returns:

child nodes comparator

getChildrenFilter

com.alee.utils.compare.Filter<E> getChildrenFilter(E node)

Returns child nodes filter for the specified asynchronous tree node. No filtering applied to children in case null is returned.

Parameters:

node - parent node

Returns:

child nodes filter

isLeaf

boolean isLeaf(E node)

Returns whether the specified node is leaf (doesn't have any children) or not. This request uses the EDT and should be processed quickly. If you are not sure if the node is leaf or not - simply return false, that will allow the tree to expand this node on request.

Parameters:

node - node

Returns:

true if the specified node is leaf, false otherwise