/* -*- 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 the Mozilla SVG project.
 *
 * The Initial Developer of the Original Code is
 * Arpad Borsos <arpad.borsos@googlemail.com>
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Arpad Borsos <arpad.borsos@googlemail.com> (original author)
 *
 * 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 ***** */

#include "nsSVGTextContentElement.h"
#include "DOMSVGPoint.h"

using namespace mozilla;

//----------------------------------------------------------------------
// nsISupports methods

NS_IMPL_ADDREF_INHERITED(nsSVGTextContentElement, nsSVGTextContentElementBase)
NS_IMPL_RELEASE_INHERITED(nsSVGTextContentElement, nsSVGTextContentElementBase)

NS_INTERFACE_MAP_BEGIN(nsSVGTextContentElement)
  NS_INTERFACE_MAP_ENTRY(nsIDOMSVGTests)
NS_INTERFACE_MAP_END_INHERITING(nsSVGTextContentElementBase)

/* readonly attribute nsIDOMSVGAnimatedLength textLength; */
NS_IMETHODIMP nsSVGTextContentElement::GetTextLength(nsIDOMSVGAnimatedLength * *aTextLength)
{
  NS_NOTYETIMPLEMENTED("nsSVGTextContentElement::GetTextLength");
  return NS_ERROR_NOT_IMPLEMENTED;
}

/* readonly attribute nsIDOMSVGAnimatedEnumeration lengthAdjust; */
NS_IMETHODIMP nsSVGTextContentElement::GetLengthAdjust(nsIDOMSVGAnimatedEnumeration * *aLengthAdjust)
{
  NS_NOTYETIMPLEMENTED("nsSVGTextContentElement::GetLengthAdjust");
  return NS_ERROR_NOT_IMPLEMENTED;
}

/* long getNumberOfChars (); */
NS_IMETHODIMP nsSVGTextContentElement::GetNumberOfChars(PRInt32 *_retval)
{
  *_retval = 0;

  nsSVGTextContainerFrame* metrics = GetTextContainerFrame();
  if (metrics)
    *_retval = metrics->GetNumberOfChars();

  return NS_OK;
}

/* float getComputedTextLength (); */
NS_IMETHODIMP nsSVGTextContentElement::GetComputedTextLength(float *_retval)
{
  *_retval = 0.0;

  nsSVGTextContainerFrame* metrics = GetTextContainerFrame();
  if (metrics)
    *_retval = metrics->GetComputedTextLength();

  return NS_OK;
}

/* float getSubStringLength (in unsigned long charnum, in unsigned long nchars); */
NS_IMETHODIMP nsSVGTextContentElement::GetSubStringLength(PRUint32 charnum, PRUint32 nchars, float *_retval)
{
  *_retval = 0.0f;
  nsSVGTextContainerFrame* metrics = GetTextContainerFrame();
  if (!metrics)
    return NS_OK;

  PRUint32 charcount = metrics->GetNumberOfChars();
  if (charcount <= charnum || nchars > charcount - charnum)
    return NS_ERROR_DOM_INDEX_SIZE_ERR;

  if (nchars == 0)
    return NS_OK;

  *_retval = metrics->GetSubStringLength(charnum, nchars);
  return NS_OK;
}

/* nsIDOMSVGPoint getStartPositionOfChar (in unsigned long charnum); */
NS_IMETHODIMP nsSVGTextContentElement::GetStartPositionOfChar(PRUint32 charnum, nsIDOMSVGPoint **_retval)
{
  *_retval = nsnull;
  nsSVGTextContainerFrame* metrics = GetTextContainerFrame();

  if (!metrics) return NS_ERROR_FAILURE;

  return metrics->GetStartPositionOfChar(charnum, _retval);
}

/* nsIDOMSVGPoint getEndPositionOfChar (in unsigned long charnum); */
NS_IMETHODIMP nsSVGTextContentElement::GetEndPositionOfChar(PRUint32 charnum, nsIDOMSVGPoint **_retval)
{
  *_retval = nsnull;
  nsSVGTextContainerFrame* metrics = GetTextContainerFrame();

  if (!metrics) return NS_ERROR_FAILURE;

  return metrics->GetEndPositionOfChar(charnum, _retval);
}

/* nsIDOMSVGRect getExtentOfChar (in unsigned long charnum); */
NS_IMETHODIMP nsSVGTextContentElement::GetExtentOfChar(PRUint32 charnum, nsIDOMSVGRect **_retval)
{
  *_retval = nsnull;
  nsSVGTextContainerFrame* metrics = GetTextContainerFrame();

  if (!metrics) return NS_ERROR_FAILURE;

  return metrics->GetExtentOfChar(charnum, _retval);
}

/* float getRotationOfChar (in unsigned long charnum); */
NS_IMETHODIMP nsSVGTextContentElement::GetRotationOfChar(PRUint32 charnum, float *_retval)
{
  *_retval = 0.0;

  nsSVGTextContainerFrame* metrics = GetTextContainerFrame();

  if (!metrics) return NS_ERROR_FAILURE;

  return metrics->GetRotationOfChar(charnum, _retval);
}

/* long getCharNumAtPosition (in nsIDOMSVGPoint point); */
NS_IMETHODIMP nsSVGTextContentElement::GetCharNumAtPosition(nsIDOMSVGPoint *point, PRInt32 *_retval)
{
  nsCOMPtr<DOMSVGPoint> p = do_QueryInterface(point);
  if (!p)
    return NS_ERROR_DOM_SVG_WRONG_TYPE_ERR;

  *_retval = -1;

  nsSVGTextContainerFrame* metrics = GetTextContainerFrame();
  if (metrics)
    *_retval = metrics->GetCharNumAtPosition(point);

  return NS_OK;
}

/* void selectSubString (in unsigned long charnum, in unsigned long nchars); */
NS_IMETHODIMP nsSVGTextContentElement::SelectSubString(PRUint32 charnum, PRUint32 nchars)
{
  NS_NOTYETIMPLEMENTED("nsSVGTextContentElement::SelectSubString");
  return NS_ERROR_NOT_IMPLEMENTED;
}
