RelationTree.LazyRelationLoader (JOSM)

java.lang.Object
- org.openstreetmap.josm.gui.dialogs.relation.RelationTree.LazyRelationLoader

All Implemented Interfaces:

java.util.EventListener, javax.swing.event.TreeWillExpandListener

Enclosing class:

RelationTree
```
class RelationTree.LazyRelationLoader
extends java.lang.Object
implements javax.swing.event.TreeWillExpandListener
```
An adapter for TreeWillExpand-events. If a node is to be expanded which is not loaded yet this will trigger asynchronous loading of the respective relation.

Constructor Summary

Constructors
Constructor Description

LazyRelationLoader()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`treeWillCollapse(javax.swing.event.TreeExpansionEvent event)`
`void`	`treeWillExpand(javax.swing.event.TreeExpansionEvent event)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LazyRelationLoader
```
LazyRelationLoader()
```
- Method Detail
  - treeWillCollapse
```
public void treeWillCollapse(javax.swing.event.TreeExpansionEvent event)
                      throws javax.swing.tree.ExpandVetoException
```
    Specified by:
    
    treeWillCollapse in interface javax.swing.event.TreeWillExpandListener
    
    Throws:
    
    javax.swing.tree.ExpandVetoException
  - treeWillExpand
```
public void treeWillExpand(javax.swing.event.TreeExpansionEvent event)
                    throws javax.swing.tree.ExpandVetoException
```
    Specified by:
    
    treeWillExpand in interface javax.swing.event.TreeWillExpandListener
    
    Throws:
    
    javax.swing.tree.ExpandVetoException