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Java Source Code / Java Documentation » Content Management System » apache lenya 2.0 » org.apache.cocoon.forms.formmodel.tree

Source Cross Reference Class Diagram Java Document (Java Doc)

org.apache.cocoon.forms.formmodel.tree .TreeModel

All known Subclasses:   org.apache.cocoon.forms.formmodel.tree .SourceTreeModel,  org.apache.cocoon.forms.formmodel.tree .DefaultTreeModel,
TreeModel
public interface TreeModel (Code)
Data model for the Tree widget, inspired by Swing's TreeModel, with the difference that child nodes are accessed through keys rather than indices.
version:
   $Id: TreeModel.java 449149 2006-09-23 03:58:05Z crossley $

Method Summary
void addTreeModelListener(TreeModelListener l)
     Adds a listener for the TreeModelEvent posted after the tree changes.
public Object getChild(Object parent, String key)

public String getChildKey(Object parent, Object child)

public Collection getChildren(Object parent)

public Object getNode(TreePath path)

public Object getRoot()
     Returns the root of the tree.
public boolean isLeaf(Object node)
     Returns true if node is a leaf.
void removeTreeModelListener(TreeModelListener l)
     Removes a listener previously added with TreeModel.addTreeModelListener(TreeModelListener) .

Method Detail
addTreeModelListener
void addTreeModelListener(TreeModelListener l)(Code)
Adds a listener for the TreeModelEvent posted after the tree changes.
Parameters:
  l - the listener to add

getChild
public Object getChild(Object parent, String key)(Code)

getChildKey
public String getChildKey(Object parent, Object child)(Code)

getChildren
public Collection getChildren(Object parent)(Code)

getNode
public Object getNode(TreePath path)(Code)

getRoot
public Object getRoot()(Code)
Returns the root of the tree. Returns null only if the tree has no nodes. the root of the tree

isLeaf
public boolean isLeaf(Object node)(Code)
Returns true if node is a leaf. It is possible for this method to return false even if node has no children. A directory in a filesystem, for example, may contain no files; the node representing the directory is not a leaf, but it also has no children.
Parameters:
  node - a node in the tree, obtained from this data source true if node is a leaf

removeTreeModelListener
void removeTreeModelListener(TreeModelListener l)(Code)
Removes a listener previously added with TreeModel.addTreeModelListener(TreeModelListener) .
Parameters:
  l - the listener to remove

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