author Doug Turner <dougt@meer.net>
Tue, 15 Jul 2008 16:37:48 -0700
changeset 15958 46b8c45ac8775fd5a53fc76728141b3b8b708841
parent 1 9b2a99adc05e53cd4010de512f50118594756650
child 20503 165c867e30edfcf74db98c48739dfb9840bac174
permissions -rw-r--r--
Inital geolocation implementation. bug=437948, r/sr=jst

/* -*- 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.org code.
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998-1999
 * 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
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 * ***** END LICENSE BLOCK ***** */

#ifndef nsFilteredContentIterator_h__
#define nsFilteredContentIterator_h__

#include "nsIContentIterator.h"
#include "nsCOMPtr.h"
#include "nsIAtom.h"
#include "nsITextServicesFilter.h"
#include "nsIDOMNSRange.h"
#include "nsIRangeUtils.h"

class nsFilteredContentIterator : public nsIContentIterator

  // nsISupports interface...

  nsFilteredContentIterator(nsITextServicesFilter* aFilter);

  virtual ~nsFilteredContentIterator();

  /* nsIContentIterator */
  virtual nsresult Init(nsIContent* aRoot);
  virtual nsresult Init(nsIDOMRange* aRange);
  virtual void First();
  virtual void Last();
  virtual void Next();
  virtual void Prev();
  virtual nsIContent *GetCurrentNode();
  virtual PRBool IsDone();
  virtual nsresult PositionAt(nsIContent* aCurNode);

  /* Helpers */
  PRPackedBool DidSkip()      { return mDidSkip; }
  void         ClearDidSkip() {  mDidSkip = PR_FALSE; }

  nsFilteredContentIterator() { }

  // enum to give us the direction
  typedef enum {eDirNotSet, eForward, eBackward} eDirectionType;
  nsresult AdvanceNode(nsIDOMNode* aNode, nsIDOMNode*& aNewNode, eDirectionType aDir);
  void CheckAdvNode(nsIDOMNode* aNode, PRPackedBool& aDidSkip, eDirectionType aDir);
  nsresult SwitchDirections(PRPackedBool aChangeToForward);

  nsCOMPtr<nsIContentIterator> mCurrentIterator;
  nsCOMPtr<nsIContentIterator> mIterator;
  nsCOMPtr<nsIContentIterator> mPreIterator;

  nsCOMPtr<nsIAtom> mBlockQuoteAtom;
  nsCOMPtr<nsIAtom> mScriptAtom;
  nsCOMPtr<nsIAtom> mTextAreaAtom;
  nsCOMPtr<nsIAtom> mSelectAreaAtom;
  nsCOMPtr<nsIAtom> mMapAtom;

  nsCOMPtr<nsITextServicesFilter> mFilter;
  nsCOMPtr<nsIDOMNSRange>         mRange;
  PRPackedBool                    mDidSkip;
  PRPackedBool                    mIsOutOfRange;
  eDirectionType                  mDirection;