nsIDOMUserDataHandler 编辑

dom/interfaces/core/nsIDOMUserDataHandler.idlScriptable The callback function for the setUserData method. 1.0 66 Introduced Gecko 1.5 Inherits from: nsISupports Last changed in Gecko 1.9 (Firefox 3)

Method overview

void handle(in unsigned short operation, in DOMString key, in nsIVariant data, in nsIDOMNode src, in nsIDOMNode dst);

Constants

Constant	Value	Description
NODE_CLONED	1	The node was cloned.
NODE_IMPORTED	2	The node was cloned into a new document.
NODE_DELETED	3	Unimplemented
NODE_RENAMED	4	Unimplemented
NODE_ADOPTED	5	The node was adopted into a new document.

Methods

handle()

This method is a callback which will be called if a node with user data is being cloned, imported or adopted.

void handle(
  in unsigned short operation,
  in DOMString key,
  in nsIVariant data,
  in nsIDOMNode src,
  in nsIDOMNode dst
);

Parameters

operation

One of the NODE_* operation type constants from the above table.

key

The key that was used to set the user data.

data

The data that was set on the original node.

src

The original node.

dst

The new node, for clone and import operations.