UserDataHandler - JRE Emulation | JRE Emulation
public interface

UserDataHandler

org.w3c.dom.UserDataHandler

Class Overview

When associating an object to a key on a node using Node.setUserData() the application can provide a handler that gets called when the node the object is associated to is being cloned, imported, or renamed. This can be used by the application to implement various behaviors regarding the data it associates to the DOM nodes. This interface defines that handler.

See also the Document Object Model (DOM) Level 3 Core Specification.

Summary

Constants
short NODE_ADOPTED The node is adopted, using Document.adoptNode().
short NODE_CLONED The node is cloned, using Node.cloneNode().
short NODE_DELETED The node is deleted.
short NODE_IMPORTED The node is imported, using Document.importNode().
short NODE_RENAMED The node is renamed, using Document.renameNode().
Public Methods
abstract void handle(short operation, String key, Object data, Node src, Node dst)
This method is called whenever the node for which this handler is registered is imported or cloned.

Constants

public static final short NODE_ADOPTED

The node is adopted, using Document.adoptNode().

Constant Value: 5 (0x00000005)

public static final short NODE_CLONED

The node is cloned, using Node.cloneNode().

Constant Value: 1 (0x00000001)

public static final short NODE_DELETED

The node is deleted.

Note: This may not be supported or may not be reliable in certain environments, such as Java, where the implementation has no real control over when objects are actually deleted.

Constant Value: 3 (0x00000003)

public static final short NODE_IMPORTED

The node is imported, using Document.importNode().

Constant Value: 2 (0x00000002)

public static final short NODE_RENAMED

The node is renamed, using Document.renameNode().

Constant Value: 4 (0x00000004)

Public Methods

public abstract void handle (short operation, String key, Object data, Node src, Node dst)

This method is called whenever the node for which this handler is registered is imported or cloned.
DOM applications must not raise exceptions in a UserDataHandler. The effect of throwing exceptions from the handler is DOM implementation dependent.

Parameters
operation Specifies the type of operation that is being performed on the node.
key Specifies the key for which this handler is being called.
data Specifies the data for which this handler is being called.
src Specifies the node being cloned, adopted, imported, or renamed. This is null when the node is being deleted.
dst Specifies the node newly created if any, or null.