com.cc.framework.ui.model
Interface TreeGroupDataModel

All Superinterfaces:

DataModel, TreeNodeDataModel

All Known Implementing Classes:

VirtualTreeGroupDataModel

public interface TreeGroupDataModel

extends TreeNodeDataModel

Data model for the nodes of a tree

Since:

1.0

Version:

$Revision: 1.7 $

Author:

Harald Schulz

Method Summary

void	addChild(TreeNodeDataModel child) Adds a new node to the child list Note: This method will also set the parent link of the new child node to this
TreeNodeDataModel	getChild(int index) Returns the node for the specified index
int	size() Returns the number of children for this node return -2 when the node has children but the user is not allowed to open the node.

Methods inherited from interface com.cc.framework.ui.model.TreeNodeDataModel

getParent, getParentKey, getUniqueKey, setParent

Method Detail

getChild

public TreeNodeDataModel getChild(int index)

Returns the node for the specified index

Parameters:

index - The zero based index

Returns:

A tree node.

addChild

public void addChild(TreeNodeDataModel child)

Adds a new node to the child list

Note: This method will also set the parent link of the new child node to this

Parameters:

child - Child node

size

public int size()

Returns the number of children for this node

• return -2 when the node has children but the user is not allowed to open the node.
• return -1 if the number of children is unknown. The tree will fire an onExpandEx event to load the children when the user opens the node
• return 0 when the node has no children.
• return > 0 when the user has children.

Returns:

The number of child nodes.