ca.odell.glazedlists
Interface TreeList.ExpansionModel<E>

All Known Implementing Classes:

DefaultExternalExpansionModel

Enclosing class:

TreeList<E>

public static interface TreeList.ExpansionModel<E>

Provide the expand/collapse state of nodes.

This interface will be consulted when nodes are inserted. Whenever the expanded/collapsed state of an element is changed, this provider is notified. It is not strictly necessary for implementors to record the expand/collapsed state of all nodes, since TreeList caches node state internally.

Method Summary

boolean	isExpanded(E element, List<E> path) Determine the specified element's initial expand/collapse state.
void	setExpanded(E element, List<E> path, boolean expanded) Notifies this handler that the specified element's expand/collapse state has changed.

Method Detail

isExpanded

boolean isExpanded(E element,
                   List<E> path)

Determine the specified element's initial expand/collapse state.

Parameters:

element - the newly inserted (or unfiltered etc.) value

path - the tree path of the element, from root to the value.

Returns:

true if the specified node's children shall be visible, or false if they should be hidden.

setExpanded

void setExpanded(E element,
                 List<E> path,
                 boolean expanded)

Notifies this handler that the specified element's expand/collapse state has changed.