/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
 * Reserved.
 */

#ifndef nsHTMLEditor_h__
#define nsHTMLEditor_h__

#include "nsITextEditor.h"
#include "nsTextEditor.h"
#include "nsIHTMLEditor.h"
#include "nsCOMPtr.h"
#include "nsIDOMEventListener.h"
#include "InsertTableTxn.h"

/**
 * The HTML editor implementation.<br>
 * Use to edit HTML document represented as a DOM tree. 
 */
class nsHTMLEditor  : public nsTextEditor, public nsIHTMLEditor
{
public:
  // see nsIHTMLEditor for documentation

//Interfaces for addref and release and queryinterface
//NOTE macro used is for classes that inherit from 
// another class. Only the base class should use NS_DECL_ISUPPORTS
  NS_DECL_ISUPPORTS_INHERITED

  nsHTMLEditor();
  virtual ~nsHTMLEditor();

//Initialization
  NS_IMETHOD Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell);

//============================================================================
// Methods that are duplicates of nsTextEditor -- exposed here for convenience

// Editing Operations
  NS_IMETHOD SetTextProperty(nsIAtom *aProperty);
  NS_IMETHOD GetTextProperty(nsIAtom *aProperty, PRBool &aAny, PRBool &aAll);
  NS_IMETHOD RemoveTextProperty(nsIAtom *aProperty);
  NS_IMETHOD DeleteSelection(nsIEditor::Direction aDir);
  NS_IMETHOD InsertText(const nsString& aStringToInsert);
  NS_IMETHOD InsertBreak();

// Transaction control
  NS_IMETHOD EnableUndo(PRBool aEnable);
  NS_IMETHOD Undo(PRUint32 aCount);
  NS_IMETHOD CanUndo(PRBool &aIsEnabled, PRBool &aCanUndo);
  NS_IMETHOD Redo(PRUint32 aCount);
  NS_IMETHOD CanRedo(PRBool &aIsEnabled, PRBool &aCanRedo);
  NS_IMETHOD BeginTransaction();
  NS_IMETHOD EndTransaction();

// Selection and navigation -- exposed here for convenience
  NS_IMETHOD MoveSelectionUp(nsIAtom *aIncrement, PRBool aExtendSelection);
  NS_IMETHOD MoveSelectionDown(nsIAtom *aIncrement, PRBool aExtendSelection);
  NS_IMETHOD MoveSelectionNext(nsIAtom *aIncrement, PRBool aExtendSelection);
  NS_IMETHOD MoveSelectionPrevious(nsIAtom *aIncrement, PRBool aExtendSelection);
  NS_IMETHOD SelectNext(nsIAtom *aIncrement, PRBool aExtendSelection); 
  NS_IMETHOD SelectPrevious(nsIAtom *aIncrement, PRBool aExtendSelection);
  NS_IMETHOD SelectAll();
  NS_IMETHOD ScrollUp(nsIAtom *aIncrement);
  NS_IMETHOD ScrollDown(nsIAtom *aIncrement);
  NS_IMETHOD ScrollIntoView(PRBool aScrollToBegin);

// cut, copy & paste
  NS_IMETHOD Cut();
  NS_IMETHOD Copy();
  NS_IMETHOD Paste();

// Input/Output
  NS_IMETHOD Insert(nsIInputStream *aInputStream);
  NS_IMETHOD OutputText(nsString& aOutputString);
  NS_IMETHOD OutputHTML(nsString& aOutputString);

//=====================================
// HTML Editing methods

// Table Editing (implemented in EditTable.cpp)
  NS_IMETHOD CreateTxnForInsertTable(const nsIDOMElement *aTableNode, InsertTableTxn ** aTxn);
  NS_IMETHOD GetColIndexForCell(nsIDOMNode *aCellNode, PRInt32 &aCellIndex);
  NS_IMETHOD GetRowIndexForCell(nsIDOMNode *aCellNode, PRInt32 &aCellIndex);
  NS_IMETHOD GetFirstCellInColumn(nsIDOMNode *aCurrentCellNode, nsIDOMNode* &aFirstCellNode);
  NS_IMETHOD GetNextCellInColumn(nsIDOMNode *aCurrentCellNode, nsIDOMNode* &aNextCellNode);
  NS_IMETHOD GetFirstCellInRow(nsIDOMNode *aCurrentCellNode, nsIDOMNode* &aCellNode);
  NS_IMETHOD GetNextCellInRow(nsIDOMNode *aCurrentCellNode, nsIDOMNode* &aNextCellNode);
  NS_IMETHOD InsertTable();
  NS_IMETHOD InsertTableCell(PRInt32 aNumber, PRBool aAfter);
  NS_IMETHOD InsertTableColumn(PRInt32 aNumber, PRBool aAfter);
  NS_IMETHOD InsertTableRow(PRInt32 aNumber, PRBool aAfter);
  NS_IMETHOD DeleteTable();
  NS_IMETHOD DeleteTableCell(PRInt32 aNumber);
  NS_IMETHOD DeleteTableColumn(PRInt32 aNumber);
  NS_IMETHOD DeleteTableRow(PRInt32 aNumber);
  NS_IMETHOD JoinTableCells(PRBool aCellToRight);

// Data members

protected:

// rules initialization

  virtual void  InitRules();
  

// EVENT LISTENERS AND COMMAND ROUTING NEEDS WORK
// For now, the listners are tied to the nsTextEditor class
//
//  nsCOMPtr<nsIDOMEventListener> mKeyListenerP;
//  nsCOMPtr<nsIDOMEventListener> mMouseListenerP;

};

#endif //nsHTMLEditor_h__