TreeModelAdapter (Tapestry API - 5.7.2)乐学网一站式学习平台

```
public interface TreeModelAdapter<T>
```
Used with DefaultTreeModel to define how to extract labels and child nodes from a value.

Since:

5.3

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`List<T>`	`getChildren(T value)`	Returns the children, in the order they should be presented to the client.
`String`	`getLabel(T value)`	Returns a text label for the value, which may be presented to the client.
`boolean`	`hasChildren(T value)`	Returns true if the value has children (only invoked for non-leaf values).
`boolean`	`isLeaf(T value)`	Determines if the value is a leaf or a (potential) container of children.

- Method Detail
  - isLeaf
```
boolean isLeaf(T value)
```
    Determines if the value is a leaf or a (potential) container of children.
    
    See Also:
    
    TreeNode.isLeaf()
  - hasChildren
```
boolean hasChildren(T value)
```
    Returns true if the value has children (only invoked for non-leaf values).
    
    See Also:
    
    TreeNode.getHasChildren()
  - getChildren
```
List<T> getChildren(T value)
```
    Returns the children, in the order they should be presented to the client. This should return the childen in the correct presentation or, or return null or an empty list.
    
    See Also:
    
    TreeNode.getChildren()
  - getLabel
```
String getLabel(T value)
```
    Returns a text label for the value, which may be presented to the client.
    
    See Also:
    
    TreeNode.getLabel()