to.etc.domui.component.tree

Class AbstractTreeNodeBase<T extends ITreeNode<T>>

java.lang.Object

to.etc.domui.component.tree.AbstractTreeNodeBase<T>

All Implemented Interfaces:

ITreeNode<T>

public abstract class AbstractTreeNodeBase<T extends ITreeNode<T>>
extends Object
implements ITreeNode<T>

Constructor Summary

Constructors

Constructor and Description
AbstractTreeNodeBase(T dad)
AbstractTreeNodeBase(T dad, List<T> children)

Method Summary

Modifier and Type	Method and Description
T	getChild(int index) Returns the nth child in the parent's list.
int	getChildCount() Returns the #of children for this object.
protected List<T>	getChildList()
T	getParent()
boolean	hasChildren() If possible this should quickly decide if this node has children or not.
abstract List<T>	loadChildren()
protected void	setChildList(List<T> childList)
void	setParent(T parent)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractTreeNodeBase

public AbstractTreeNodeBase(T dad)

AbstractTreeNodeBase

public AbstractTreeNodeBase(T dad,
                            List<T> children)

Method Detail

loadChildren

public abstract List<T> loadChildren()
                              throws Exception

Throws:

Exception

setParent

public void setParent(T parent)

getChild

public T getChild(int index)
           throws Exception

Description copied from interface: ITreeNode

Returns the nth child in the parent's list.

Specified by:

getChild in interface ITreeNode<T extends ITreeNode<T>>

Returns:

Throws:

Exception

getChildCount

public int getChildCount()
                  throws Exception

Description copied from interface: ITreeNode

Returns the #of children for this object. This must return the actual number.

Specified by:

getChildCount in interface ITreeNode<T extends ITreeNode<T>>

Returns:

Throws:

Exception

hasChildren

public boolean hasChildren()
                    throws Exception

Description copied from interface: ITreeNode

If possible this should quickly decide if this node has children or not. This is used to render an expanded node's state icons. If determining whether a node has children is an expensive option this method should return TRUE always; this causes the state icon to display as if children are available and the user has the possibility to expand that node. At that time we'll call getChildCount() which must determine the #of children. If that returns zero it will at that time properly re-render the state of the node, showing that the node is actually a leaf and cannot be expanded further.

Specified by:

hasChildren in interface ITreeNode<T extends ITreeNode<T>>

Returns:

Throws:

Exception

getParent

public T getParent()
            throws Exception

Specified by:

getParent in interface ITreeNode<T extends ITreeNode<T>>

Throws:

Exception

getChildList

protected List<T> getChildList()

setChildList

protected void setChildList(List<T> childList)