Where Am I? Class Hierarchy (JFC) All Classes (JFC)

Interface com.sun.java.swing.tree.TreeModel

public interface TreeModel

The interface that defines a suitable data model for a JTree.


Method Index

addTreeModelListener(TreeModelListener)
Adds a listener for the TreeModelEvent posted after the tree changes.
getChild(Object, int)
Returns the child of parent at index index in the parent's child array.
getChildCount(Object)
Returns the number of children of parent.
getIndexOfChild(Object, Object)
Returns the index of child in parent.
getRoot()
Returns the root of the tree.
isLeaf(Object)
Returns true if node is a leaf.
removeTreeModelListener(TreeModelListener)
Removes a listener previously added with addTreeModelListener().
valueForPathChanged(TreePath, Object)
Messaged when the user has altered the value for the item identified by path to newValue.

Methods

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

Returns:
the root of the tree
getChild
 public abstract Object getChild(Object parent,
                                 int index)
Returns the child of parent at index index in the parent's child array. parent must be a node previously obtained from this data source.

Parameters:
parent - a node in the tree, obtained from this data source
Returns:
the child of parent at index index
getChildCount
 public abstract int getChildCount(Object parent)
Returns the number of children of parent. Returns 0 if the node is a leaf or if it has no children. parent must be a node previously obtained from this data source.

Parameters:
parent - a node in the tree, obtained from this data source
Returns:
the number of children of the node parent
isLeaf
 public abstract boolean isLeaf(Object node)
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
Returns:
true if node is a leaf
valueForPathChanged
 public abstract void valueForPathChanged(TreePath path,
                                          Object newValue)
Messaged when the user has altered the value for the item identified by path to newValue. If newValue signifies a truly new value the model should post a treeNodesChanged event.

Parameters:
path - path to the node that the user has altered.
newValue - the new value from the TreeCellEditor.
getIndexOfChild
 public abstract int getIndexOfChild(Object parent,
                                     Object child)
Returns the index of child in parent.

addTreeModelListener
 public abstract void addTreeModelListener(TreeModelListener l)
Adds a listener for the TreeModelEvent posted after the tree changes.

Parameters:
l - the listener to add
See Also:
removeTreeModelListener
removeTreeModelListener
 public abstract void removeTreeModelListener(TreeModelListener l)
Removes a listener previously added with addTreeModelListener().

Parameters:
l - the listener to remove
See Also:
addTreeModelListener

Where Am I? Class Hierarchy (JFC) All Classes (JFC)