editor/txtsvc/src/nsFilteredContentIterator.h
author L. David Baron <dbaron@dbaron.org>
Tue, 15 Nov 2011 17:02:00 +1300
changeset 80254 74f32abaa8c0b03f89df765fd071f27ddf454251
parent 78840 ec7577dec4fceef0ac2717416d9c48289402d935
child 84119 6e016e20e726a465058c3ae64e893d6050af528d
child 105267 f93960a93ad97a56d308bd9ce25d97cbc175d524
permissions -rw-r--r--
Add inflation parameter to nsLayoutUtils::GetFontMetricsFor* methods. (Bug 627842, patch 6) r=roc

/* -*- 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
 * 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 ***** */

#ifndef nsFilteredContentIterator_h__
#define nsFilteredContentIterator_h__

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

/**
 * 
 */
class nsFilteredContentIterator : public nsIContentIterator
{
public:

  // nsISupports interface...
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_CLASS(nsFilteredContentIterator)

  nsFilteredContentIterator(nsITextServicesFilter* aFilter);

  virtual ~nsFilteredContentIterator();

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

  /* Helpers */
  bool DidSkip()      { return mDidSkip; }
  void         ClearDidSkip() {  mDidSkip = false; }

protected:
  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, bool& aDidSkip, eDirectionType aDir);
  nsresult SwitchDirections(bool 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;
  bool                            mDidSkip;
  bool                            mIsOutOfRange;
  eDirectionType                  mDirection;
};

#endif