/*
 * dom2traversal.idl
 *
 * DOM Level 2 Traversal IDL definitions, rewritten in Web IDL.
 *
 * Original OMG IDL:
 *
 *   http://www.w3.org/TR/2000/REC-DOM-Level-2-Traversal-Range-20001113/traversal.idl
 */

module traversal {

  typedef dom::Node Node;
  typedef dom::DOMException DOMException;

  interface NodeFilter;

  // Introduced in DOM Level 2:
  interface NodeIterator {
    readonly attribute Node             root;
    readonly attribute unsigned long    whatToShow;
    readonly attribute NodeFilter       filter;
    readonly attribute boolean          expandEntityReferences;
    Node               nextNode()
                                        raises(DOMException);
    Node               previousNode()
                                        raises(DOMException);
    void               detach();
  };

  // Introduced in DOM Level 2:
  [Callback]
  interface NodeFilter {

    // Constants returned by acceptNode
    const short               FILTER_ACCEPT                  = 1;
    const short               FILTER_REJECT                  = 2;
    const short               FILTER_SKIP                    = 3;


    // Constants for whatToShow
    const unsigned long       SHOW_ALL                       = 0xFFFFFFFF;
    const unsigned long       SHOW_ELEMENT                   = 0x00000001;
    const unsigned long       SHOW_ATTRIBUTE                 = 0x00000002;
    const unsigned long       SHOW_TEXT                      = 0x00000004;
    const unsigned long       SHOW_CDATA_SECTION             = 0x00000008;
    const unsigned long       SHOW_ENTITY_REFERENCE          = 0x00000010;
    const unsigned long       SHOW_ENTITY                    = 0x00000020;
    const unsigned long       SHOW_PROCESSING_INSTRUCTION    = 0x00000040;
    const unsigned long       SHOW_COMMENT                   = 0x00000080;
    const unsigned long       SHOW_DOCUMENT                  = 0x00000100;
    const unsigned long       SHOW_DOCUMENT_TYPE             = 0x00000200;
    const unsigned long       SHOW_DOCUMENT_FRAGMENT         = 0x00000400;
    const unsigned long       SHOW_NOTATION                  = 0x00000800;

    short              acceptNode(in Node n);
  };

  // Introduced in DOM Level 2:
  interface TreeWalker {
    readonly attribute Node             root;
    readonly attribute unsigned long    whatToShow;
    readonly attribute NodeFilter       filter;
    readonly attribute boolean          expandEntityReferences;
             attribute Node             currentNode setraises(DOMException);

    Node               parentNode();
    Node               firstChild();
    Node               lastChild();
    Node               previousSibling();
    Node               nextSibling();
    Node               previousNode();
    Node               nextNode();
  };

  // Introduced in DOM Level 2:
  interface DocumentTraversal {
    NodeIterator       createNodeIterator(in Node root, 
                                          in unsigned long whatToShow, 
                                          in NodeFilter filter, 
                                          in boolean entityReferenceExpansion)
                                        raises(DOMException);
    TreeWalker         createTreeWalker(in Node root, 
                                        in unsigned long whatToShow, 
                                        in NodeFilter filter, 
                                        in boolean entityReferenceExpansion)
                                        raises(DOMException);
  };

  Document implements DocumentTraversal;
};