/* -*- Mode: C++; 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 Communicator client code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * 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
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 * the provisions above, a recipient may use your version of this file under
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 * ***** END LICENSE BLOCK ***** */

#ifndef nsIXULDocument_h___
#define nsIXULDocument_h___

#include "nsISupports.h"
#include "nsString.h"
#include "nsCOMArray.h"

class nsIXULTemplateBuilder;
class nsIContent;
class nsIScriptGlobalObjectOwner;


// {AF676EDD-1FB9-4C75-9B1F-CB4E02E1C779}
#define NS_IXULDOCUMENT_IID \
{ 0xaf676edd, 0x1fb9, 0x4c75, \
  { 0x9b, 0x1f, 0xcb, 0x4e, 0x02, 0xe1, 0xc7, 0x79 } }


/*
 * An XUL-specific extension to nsIDocument. Includes methods for
 * setting the root resource of the document content model, a factory
 * method for constructing the children of a node, etc.
 */
class nsIXULDocument : public nsISupports
{
public:
  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IXULDOCUMENT_IID)

  // The resource-to-element map is a one-to-many mapping of RDF
  // resources to content elements.

  /**
   * Add an entry to the ID-to-element map.
   */
  NS_IMETHOD AddElementForID(nsIContent* aElement) = 0;

  /**
   * Get the elements for a particular resource --- all elements whose 'id'
   * or 'ref' is aID. The nsCOMArray will be truncated and filled in with
   * nsIContent pointers.
   */
  NS_IMETHOD GetElementsForID(const nsAString& aID, nsCOMArray<nsIContent>& aElements) = 0;

  /**
   * Get the nsIScriptGlobalObjectOwner for this document.
   */
  NS_IMETHOD GetScriptGlobalObjectOwner(nsIScriptGlobalObjectOwner** aGlobalOwner) = 0;

  /**
   * Notify the XUL document that a subtree has been added
   */
  NS_IMETHOD AddSubtreeToDocument(nsIContent* aElement) = 0;

  /**
   * Notify the XUL document that a subtree has been removed
   */
  NS_IMETHOD RemoveSubtreeFromDocument(nsIContent* aElement) = 0;

  /**
   * Attach a XUL template builder to the specified content node.
   * @param aBuilder the template builder to attach, or null if
   *   the builder is to be removed.
   */
  NS_IMETHOD SetTemplateBuilderFor(nsIContent* aContent, nsIXULTemplateBuilder* aBuilder) = 0;

  /**
   * Retrieve the XUL template builder that's attached to a content
   * node.
   */
  NS_IMETHOD GetTemplateBuilderFor(nsIContent* aContent, nsIXULTemplateBuilder** aResult) = 0;

  /**
   * This is invoked whenever the prototype for this document is loaded
   * and should be walked, regardless of whether the XUL cache is
   * disabled, whether the protototype was loaded, whether the
   * prototype was loaded from the cache or created by parsing the
   * actual XUL source, etc.
   *
   * @param aResumeWalk whether this should also call ResumeWalk().
   * Sometimes the caller of OnPrototypeLoadDone resumes the walk itself
   */
  NS_IMETHOD OnPrototypeLoadDone(PRBool aResumeWalk) = 0;

  /**
   * Callback notifying when a document could not be parsed properly.
   */
  virtual PRBool OnDocumentParserError() = 0;

  /**
   * Reset the document direction so that it is recomputed.
   */
  virtual void ResetDocumentDirection() = 0;
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIXULDocument, NS_IXULDOCUMENT_IID)

// factory functions
nsresult NS_NewXULDocument(nsIXULDocument** result);

#endif // nsIXULDocument_h___