1. /*
  2. * Copyright (c) 2000 World Wide Web Consortium,
  3. * (Massachusetts Institute of Technology, Institut National de
  4. * Recherche en Informatique et en Automatique, Keio University). All
  5. * Rights Reserved. This program is distributed under the W3C's Software
  6. * Intellectual Property License. This program is distributed in the
  7. * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
  8. * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  9. * PURPOSE.
  10. * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
  11. */
  12. package org.w3c.dom;
  13. /**
  14. * The <code>NodeList</code> interface provides the abstraction of an ordered
  15. * collection of nodes, without defining or constraining how this collection
  16. * is implemented. <code>NodeList</code> objects in the DOM are live.
  17. * <p>The items in the <code>NodeList</code> are accessible via an integral
  18. * index, starting from 0.
  19. * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113'>Document Object Model (DOM) Level 2 Core Specification</a>.
  20. */
  21. public interface NodeList {
  22. /**
  23. * Returns the <code>index</code>th item in the collection. If
  24. * <code>index</code> is greater than or equal to the number of nodes in
  25. * the list, this returns <code>null</code>.
  26. * @param index Index into the collection.
  27. * @return The node at the <code>index</code>th position in the
  28. * <code>NodeList</code>, or <code>null</code> if that is not a valid
  29. * index.
  30. */
  31. public Node item(int index);
  32. /**
  33. * The number of nodes in the list. The range of valid child node indices
  34. * is 0 to <code>length-1</code> inclusive.
  35. */
  36. public int getLength();
  37. }