/* -*- Mode: C++; tab-width: 4; 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
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Aaron Leventhal <aaronl@netscape.com> (original author)
 *   Kyle Yuan <kyle.yuan@sun.com>
 *   Alexander Surkov <surkov.alexander@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 ***** */
#ifndef __nsXULListboxAccessible_h__
#define __nsXULListboxAccessible_h__

#include "nsIAccessibleTable.h"

#include "nsCOMPtr.h"
#include "nsXULMenuAccessible.h"
#include "nsBaseWidgetAccessible.h"

class nsIWeakReference;

/**
 * nsXULColumnsAccessible are accessible for list and tree columns elements
 * (xul:treecols and xul:listcols).
 */
class nsXULColumnsAccessible : public nsAccessibleWrap
{
public:
  nsXULColumnsAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsAccessible
  virtual PRUint32 NativeRole();
  virtual nsresult GetStateInternal(PRUint32 *aState, PRUint32 *aExtraState);
};

/**
 * nsXULColumnAccessible are accessibles for list and tree column elements
 * (xul:listcol and xul:treecol).
 */
class nsXULColumnItemAccessible : public nsLeafAccessible
{
public:
  nsXULColumnItemAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsIAccessible
  NS_IMETHOD GetNumActions(PRUint8 *aNumActions);
  NS_IMETHOD GetActionName(PRUint8 aIndex, nsAString& aName);
  NS_IMETHOD DoAction(PRUint8 aIndex);

  // nsAccessible
  virtual PRUint32 NativeRole();
  virtual nsresult GetStateInternal(PRUint32 *aState, PRUint32 *aExtraState);

  enum { eAction_Click = 0 };
};

/*
 * A class the represents the XUL Listbox widget.
 */
class nsXULListboxAccessible : public nsXULSelectableAccessible,
                               public nsIAccessibleTable
{
public:
  nsXULListboxAccessible(nsIContent *aContent, nsIWeakReference *aShell);
  virtual ~nsXULListboxAccessible() {}

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIACCESSIBLETABLE

  // nsIAccessible
  NS_IMETHOD GetValue(nsAString& aValue);

  // nsAccessible
  virtual PRUint32 NativeRole();
  virtual nsresult GetStateInternal(PRUint32 *aState, PRUint32 *aExtraState);

protected:
  PRBool IsMulticolumn();
};

/**
  * Listitems -- used in listboxes 
  */
class nsXULListitemAccessible : public nsXULMenuitemAccessible
{
public:
  enum { eAction_Click = 0 };

  NS_DECL_ISUPPORTS_INHERITED
  
  nsXULListitemAccessible(nsIContent *aContent, nsIWeakReference *aShell);
  virtual ~nsXULListitemAccessible() {}

  // nsIAccessible
  NS_IMETHOD GetActionName(PRUint8 index, nsAString& aName);
  // Don't use XUL menuitems's description attribute
  NS_IMETHOD GetDescription(nsAString& aDesc) { return nsAccessibleWrap::GetDescription(aDesc); }

  // nsAccessible
  virtual nsresult GetNameInternal(nsAString& aName);
  virtual PRUint32 NativeRole();
  virtual nsresult GetStateInternal(PRUint32 *aState, PRUint32 *aExtraState);
  virtual void GetPositionAndSizeInternal(PRInt32 *aPosInSet,
                                          PRInt32 *aSetSize);
  virtual PRBool GetAllowsAnonChildAccessibles();

protected:
  /**
   * Return listbox accessible for the listitem.
   */
  nsAccessible *GetListAccessible();

private:
  PRBool mIsCheckbox;
};

/**
 * Class represents xul:listcell.
 */
class nsXULListCellAccessible : public nsHyperTextAccessibleWrap,
                                public nsIAccessibleTableCell
{
public:
  nsXULListCellAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsISupports
  NS_DECL_ISUPPORTS_INHERITED

  // nsIAccessibleTableCell
  NS_DECL_NSIACCESSIBLETABLECELL

  // nsAccessible
  virtual nsresult GetAttributesInternal(nsIPersistentProperties *aAttributes);
  virtual PRUint32 NativeRole();
};

#endif
