/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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):
 * Original Author: David W. Hyatt (hyatt@netscape.com)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either 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 NPL, 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 NPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsCOMPtr.h"
#include "nsXULTreeSliceFrame.h"

//
// NS_NewXULTreeSliceFrame
//
// Creates a new TreeSlice frame
//
nsresult
NS_NewXULTreeSliceFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot, 
                        nsIBoxLayout* aLayoutManager)
{
  NS_PRECONDITION(aNewFrame, "null OUT ptr");
  if (nsnull == aNewFrame) {
    return NS_ERROR_NULL_POINTER;
  }
  nsXULTreeSliceFrame* it = new (aPresShell) nsXULTreeSliceFrame(aPresShell, aIsRoot, aLayoutManager);
  if (!it)
    return NS_ERROR_OUT_OF_MEMORY;

  *aNewFrame = it;
  return NS_OK;
  
} // NS_NewXULTreeSliceFrame


NS_IMETHODIMP_(nsrefcnt) 
nsXULTreeSliceFrame::AddRef(void)
{
  return NS_OK;
}

NS_IMETHODIMP_(nsrefcnt)
nsXULTreeSliceFrame::Release(void)
{
  return NS_OK;
}

//
// QueryInterface
//
NS_INTERFACE_MAP_BEGIN(nsXULTreeSliceFrame)
  NS_INTERFACE_MAP_ENTRY(nsIXULTreeSlice)
NS_INTERFACE_MAP_END_INHERITING(nsGridRowLeafFrame)

// Constructor
nsXULTreeSliceFrame::nsXULTreeSliceFrame(nsIPresShell* aPresShell, PRBool aIsRoot, nsIBoxLayout* aLayoutManager)
:nsGridRowLeafFrame(aPresShell, aIsRoot, aLayoutManager) 
{}

// Destructor
nsXULTreeSliceFrame::~nsXULTreeSliceFrame()
{
}

nsresult
nsXULTreeSliceFrame::GetPrefSize(nsBoxLayoutState& aState, nsSize& aSize)
{
  nsresult rv = nsGridRowLeafFrame::GetPrefSize(aState, aSize);
  if (NS_FAILED(rv)) return rv;

  aSize.height = PR_MAX(mRect.height, aSize.height);
  return NS_OK;
}