javax.swing
Class JTree.TreeModelHandler

java.lang.Object
  |
  +--javax.swing.JTree.TreeModelHandler

Enclosing class:

JTree

protected class JTree.TreeModelHandler

extends Object

implements TreeModelListener

Listens to the model and updates the expandedState accordingly when nodes are removed, or changed.

Constructor Summary

protected

JTree.TreeModelHandler()

Method Summary

void	treeNodesChanged(TreeModelEvent e) Invoked after a node (or a set of siblings) has changed in some way.
void	treeNodesInserted(TreeModelEvent e) Invoked after nodes have been inserted into the tree.
void	treeNodesRemoved(TreeModelEvent e) Invoked after nodes have been removed from the tree.
void	treeStructureChanged(TreeModelEvent e) Invoked after the tree has drastically changed structure from a given node down.

Methods inherited from class java.lang.Object

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

Constructor Detail

JTree.TreeModelHandler

protected JTree.TreeModelHandler()

Method Detail

treeNodesChanged

public void treeNodesChanged(TreeModelEvent e)

Description copied from interface: TreeModelListener

Invoked after a node (or a set of siblings) has changed in some way. The node(s) have not changed locations in the tree or altered their children arrays, but other attributes have changed and may affect presentation. Example: the name of a file has changed, but it is in the same location in the file system.

To indicate the root has changed, childIndices and children will be null.

e.path() returns the path the parent of the changed node(s).

e.childIndices() returns the index(es) of the changed node(s).

Specified by:

treeNodesChanged in interface TreeModelListener

treeNodesInserted

public void treeNodesInserted(TreeModelEvent e)

Description copied from interface: TreeModelListener

Invoked after nodes have been inserted into the tree.

e.path() returns the parent of the new nodes

e.childIndices() returns the indices of the new nodes in ascending order.

Specified by:

treeNodesInserted in interface TreeModelListener

treeStructureChanged

public void treeStructureChanged(TreeModelEvent e)

Description copied from interface: TreeModelListener

Invoked after the tree has drastically changed structure from a given node down. If the path returned by e.getPath() is of length one and the first element does not identify the current root node the first element should become the new root of the tree.

e.path() holds the path to the node.

e.childIndices() returns null.

Specified by:

treeStructureChanged in interface TreeModelListener

treeNodesRemoved

public void treeNodesRemoved(TreeModelEvent e)

Description copied from interface: TreeModelListener

Invoked after nodes have been removed from the tree. Note that if a subtree is removed from the tree, this method may only be invoked once for the root of the removed subtree, not once for each individual set of siblings removed.

e.path() returns the former parent of the deleted nodes.

e.childIndices() returns the indices the nodes had before they were deleted in ascending order.

Specified by:

treeNodesRemoved in interface TreeModelListener