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BasicTreeUI.TreeModelHandler (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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javax.swing.plaf.basic
Class BasicTreeUI.TreeModelHandler

java.lang.Object
  |
  +--javax.swing.plaf.basic.BasicTreeUI.TreeModelHandler

All Implemented Interfaces:

EventListener, TreeModelListener

Enclosing class:

BasicTreeUI

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public class BasicTreeUI.TreeModelHandler

extends Object

implements TreeModelListener

Forwards all TreeModel events to the TreeState.

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Constructor Summary

BasicTreeUI.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

BasicTreeUI.TreeModelHandler

public BasicTreeUI.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.

Use e.getPath() to get the parent of the changed node(s). e.getChildIndices() returns the index(es) of the changed node(s).

Specified by:

treeNodesChanged in interface TreeModelListener

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treeNodesInserted

public void treeNodesInserted(TreeModelEvent e)

Description copied from interface: TreeModelListener

Invoked after nodes have been inserted into the tree.

Use e.getPath() to get the parent of the new node(s). e.getChildIndices() returns the index(es) of the new node(s) in ascending order.

Specified by:

treeNodesInserted in interface TreeModelListener

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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.

Use e.getPath() to get the former parent of the deleted node(s). e.getChildIndices() returns, in ascending order, the index(es) the node(s) had before being deleted.

Specified by:

treeNodesRemoved in interface TreeModelListener

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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.

Use e.getPath() to get the path to the node. e.getChildIndices() returns null.

Specified by:

treeStructureChanged in interface TreeModelListener

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.