/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2000
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Vidur Apparao <vidur@netscape.com> (original author)
 *   Johnny Stenback <jst@netscape.com>
 *   Robert Sayre <sayrer@gmail.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "domstubs.idl"

interface nsIBoxObject;
interface nsIDOMLocation;

[scriptable, uuid(92f2c6f8-3668-4a47-8251-2a900afe11fa)]
interface nsIDOMNSDocument : nsISupports
{
  readonly attribute DOMString      characterSet;
           attribute DOMString      dir;

  readonly attribute nsIDOMLocation location;

           attribute DOMString      title;

  readonly attribute DOMString      contentType;
  readonly attribute DOMString      readyState;
  readonly attribute DOMString      lastModified;
  readonly attribute DOMString      referrer;

  boolean      hasFocus();

  readonly attribute nsIDOMElement  activeElement;

  readonly attribute nsIDOMElement  currentScript;

  /*
   * Retrieve elements matching all classes listed in a
   * space-separated string.
   *
   * See <http://whatwg.org/specs/web-apps/current-work/>
   */
  nsIDOMNodeList getElementsByClassName(in DOMString classes);

  /**
  * Returns the element from the caller's document at the given point,
  * relative to the upper-left-most point in the (possibly scrolled)
  * window or frame.
  *
  * If the element at the given point belongs to another document (such as
  * an iframe's subdocument), the element in the calling document's DOM
  * (e.g. the iframe) is returned. If the element at the given point is
  * anonymous or XBL generated content, such as a textbox's scrollbars, then
  * the first non-anonymous parent element (that is, the textbox) is returned.
  *
  * This method returns null if either coordinate is negative, or if the
  * specified point lies outside the visible bounds of the document.
  *
  * Callers from XUL documents should wait until the onload event has fired
  * before calling this method.
  *
  * See <http://www.w3.org/TR/cssom-view/#the-documentview-interface>
  */
  nsIDOMElement             elementFromPoint(in float x, in float y);

  /**
   * Release the current mouse capture if it is on an element within this
   * document.
   */
  void releaseCapture();

  /**
   * Use the given DOM element as the source image of target |-moz-element()|.
   *
   * This function introduces a new special ID (called "image element ID"),
   * which is only used by |-moz-element()|, and associates it with the given
   * DOM element.  Image elements ID's have the higher precedence than general
   * HTML id's, so if |document.mozSetImageElement(<id>, <element>)| is called,
   * |-moz-element(#<id>)| uses |<element>| as the source image even if there
   * is another element with id attribute = |<id>|.  To unregister an image
   * element ID |<id>|, call |document.mozSetImageElement(<id>, null)|.
   *
   * Example:
   * <script>
   *   canvas = document.createElement("canvas");
   *   canvas.setAttribute("width", 100);
   *   canvas.setAttribute("height", 100);
   *   // draw to canvas
   *   document.mozSetImageElement("canvasbg", canvas);
   * </script>
   * <div style="background-image: -moz-element(#canvasbg);"></div>
   *
   * @param aImageElementId an image element ID to associate with
   * |aImageElement|
   * @param aImageElement a DOM element to be used as the source image of
   * |-moz-element(#aImageElementId)|. If this is null, the function will
   * unregister the image element ID |aImageElementId|.
   */
  void mozSetImageElement(in DOMString aImageElementId,
                          in nsIDOMElement aImageElement);
};