Java Doc for UserDataHandler.java in  » Ajax » ItsNat » org » w3c » dom » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » ItsNat » org.w3c.dom 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.w3c.dom.UserDataHandler

UserDataHandler
public interface UserDataHandler (Code)
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.
since:
   DOM Level 3



Field Summary
final public static  shortNODE_ADOPTED
     The node is adopted, using Document.adoptNode().
final public static  shortNODE_CLONED
     The node is cloned, using Node.cloneNode().
final public static  shortNODE_DELETED
     The node is deleted.
final public static  shortNODE_IMPORTED
     The node is imported, using Document.importNode().
final public static  shortNODE_RENAMED
     The node is renamed, using Document.renameNode().


Method Summary
public  voidhandle(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.

Field Detail
NODE_ADOPTED
final public static short NODE_ADOPTED(Code)
The node is adopted, using Document.adoptNode().



NODE_CLONED
final public static short NODE_CLONED(Code)
The node is cloned, using Node.cloneNode().



NODE_DELETED
final public static short NODE_DELETED(Code)
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.




NODE_IMPORTED
final public static short NODE_IMPORTED(Code)
The node is imported, using Document.importNode().



NODE_RENAMED
final public static short NODE_RENAMED(Code)
The node is renamed, using Document.renameNode().





Method Detail
handle
public void handle(short operation, String key, Object data, Node src, Node dst)(Code)
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.
Parameters:
  key - Specifies the key for which this handler is being called.
Parameters:
  data - Specifies the data for which this handler is being called.
Parameters:
  src - Specifies the node being cloned, adopted, imported, or renamed. This is null when the node is being deleted.
Parameters:
  dst - Specifies the node newly created if any, or null.



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