| 
Class Summary | 
| DataChangedEvent | 
  | 
| Tree | 
A Tree is a data model representing a set of objects linked into a hierarchy. | 
| TreeGrid | 
The Smart GWT system supports hierarchical data (also referred to as tree data due to its "branching" organization)
 with:     the Tree class, which manipulates hierarchical data sets  
  the TreeGrid widget class, which extends the ListGrid class to visually        present tree data in an
 expandable/collapsible format. | 
| TreeGridField | 
An object literal with a particular set of properties used to configure the display of and interaction with the columns
 of a TreeGrid. | 
| TreeNode | 
Every node in the tree is represented by a TreeNode object which is an object literal with a set of properties that
 configure the node. |