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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "domstubs.idl"

/**
 * The nsIDOMRange interface is an interface to a DOM range object.
 *
 * For more information on this interface please see
 * http://www.w3.org/TR/DOM-Level-2-Traversal-Range/
 */

[builtinclass, uuid(1f94055c-42e7-4a30-96a1-6a804f1c2d1e)]
interface nsIDOMRange : nsISupports
{
  readonly attribute nsIDOMNode       startContainer;
  readonly attribute long             startOffset;
  readonly attribute nsIDOMNode       endContainer;
  readonly attribute long             endOffset;
  readonly attribute boolean          collapsed;
  readonly attribute nsIDOMNode       commonAncestorContainer;

  void               setStart(in nsIDOMNode refNode, in long offset);
  void               setEnd(in nsIDOMNode refNode, in long offset);
  void               setStartBefore(in nsIDOMNode refNode);
  void               setStartAfter(in nsIDOMNode refNode);
  void               setEndBefore(in nsIDOMNode refNode);
  void               setEndAfter(in nsIDOMNode refNode);
  void               collapse(in boolean toStart);
  void               selectNode(in nsIDOMNode refNode);
  void               selectNodeContents(in nsIDOMNode refNode);

  // CompareHow
  const unsigned short      START_TO_START                 = 0;
  const unsigned short      START_TO_END                   = 1;
  const unsigned short      END_TO_END                     = 2;
  const unsigned short      END_TO_START                   = 3;

  short              compareBoundaryPoints(in unsigned short how,
                                           in nsIDOMRange sourceRange);
  void               deleteContents();
  nsIDOMDocumentFragment extractContents();
  nsIDOMDocumentFragment cloneContents();
  void               insertNode(in nsIDOMNode newNode);
  void               surroundContents(in nsIDOMNode newParent);
  nsIDOMRange        cloneRange();
  DOMString          toString();
  void               detach();
  
  // This method comes from
  // http://html5.org/specs/dom-parsing.html#extensions-to-the-range-interface
  nsIDOMDocumentFragment    createContextualFragment(in DOMString fragment);

  // This returns true if parent+offset equals either
  // of the boundary points or is between them.
  boolean                   isPointInRange(in nsIDOMNode parent,
                                           in long offset);

  // comparePoint returns
  //   -1 if point is before the start boundary point,
  //    0 if point is either of the boundary points or between them,
  //    1 if point is after the end boundary point.
  // Sort of a strcmp for ranges.
  short                     comparePoint(in nsIDOMNode parent, in long offset);

  /**
   * Returns whether the range intersects node.
   */
  boolean                   intersectsNode(in nsIDOMNode node);

  // These methods come from 
  // http://dev.w3.org/csswg/cssom-view/#extensions-to-the-range-interface
  nsIDOMClientRectList getClientRects();
  nsIDOMClientRect getBoundingClientRect();
};