org.apache.tapestry5.tree
Interface TreeExpansionModel<T>

All Known Implementing Classes:

DefaultTreeExpansionModel

public interface TreeExpansionModel<T>

Tracks which nodes of a TreeModel are currently expanded. The default implementation simply stores a set of unique node ids to identify expanded nodes. The expansion model is updated whenever folders are expanded or collapsed on the client side.

Since:

5.3

See Also:

Tree

Method Summary

void	clear() Marks all nodes as collapsed.
boolean	isExpanded(TreeNode<T> node) Returns true if the node has been previously expanded.
void	markCollapsed(TreeNode<T> node) Marks the node as collapsed (not expanded).
void	markExpanded(TreeNode<T> node) Marks the node as expanded.

Method Detail

isExpanded

boolean isExpanded(TreeNode<T> node)

Returns true if the node has been previously expanded.

Parameters:

node - node to check for expansion

Returns:

true if expanded

markExpanded

void markExpanded(TreeNode<T> node)

Marks the node as expanded.

markCollapsed

void markCollapsed(TreeNode<T> node)

Marks the node as collapsed (not expanded).

clear

void clear()

Marks all nodes as collapsed.