/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "SVGPreserveAspectRatio.h"

#include "mozilla/dom/SVGPreserveAspectRatioBinding.h"

#include "nsContentUtils.h"

#include "nsWhitespaceTokenizer.h"

#include "SVGAnimatedPreserveAspectRatio.h"

using namespace mozilla;

using namespace dom;

using namespace SVGPreserveAspectRatio_Binding;

NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(DOMSVGPreserveAspectRatio, mSVGElement)

NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMSVGPreserveAspectRatio)

NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMSVGPreserveAspectRatio)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMSVGPreserveAspectRatio)

  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY

  NS_INTERFACE_MAP_ENTRY(nsISupports)

NS_INTERFACE_MAP_END

static const char *sAlignStrings[] =

  { "none", "xMinYMin", "xMidYMin", "xMaxYMin", "xMinYMid", "xMidYMid",

    "xMaxYMid", "xMinYMax", "xMidYMax", "xMaxYMax" };

static const char *sMeetOrSliceStrings[] = { "meet", "slice" };

static uint16_t

GetAlignForString(const nsAString &aAlignString)

{

  for (uint32_t i = 0 ; i < ArrayLength(sAlignStrings) ; i++) {

    if (aAlignString.EqualsASCII(sAlignStrings[i])) {

      return (i + SVG_ALIGN_MIN_VALID);

    }

  }

  return SVG_PRESERVEASPECTRATIO_UNKNOWN;

}

static uint16_t

GetMeetOrSliceForString(const nsAString &aMeetOrSlice)

{

  for (uint32_t i = 0 ; i < ArrayLength(sMeetOrSliceStrings) ; i++) {

    if (aMeetOrSlice.EqualsASCII(sMeetOrSliceStrings[i])) {

      return (i + SVG_MEETORSLICE_MIN_VALID);

    }

  }

  return SVG_MEETORSLICE_UNKNOWN;

}

/* static */ nsresult

SVGPreserveAspectRatio::FromString(const nsAString& aString,

                                   SVGPreserveAspectRatio* aValue)

{

  nsWhitespaceTokenizerTemplate<nsContentUtils::IsHTMLWhitespace>

    tokenizer(aString);

  if (tokenizer.whitespaceBeforeFirstToken() ||

      !tokenizer.hasMoreTokens()) {

    return NS_ERROR_DOM_SYNTAX_ERR;

  }

  const nsAString &token = tokenizer.nextToken();

  nsresult rv;

  SVGPreserveAspectRatio val;

  rv = val.SetAlign(GetAlignForString(token));

  if (NS_FAILED(rv)) {

    return NS_ERROR_DOM_SYNTAX_ERR;

  }

  if (tokenizer.hasMoreTokens()) {

    rv = val.SetMeetOrSlice(GetMeetOrSliceForString(tokenizer.nextToken()));

    if (NS_FAILED(rv)) {

      return NS_ERROR_DOM_SYNTAX_ERR;

    }

  } else {

    val.SetMeetOrSlice(SVG_MEETORSLICE_MEET);

  }

  if (tokenizer.whitespaceAfterCurrentToken()) {

    return NS_ERROR_DOM_SYNTAX_ERR;

  }

  *aValue = val;

  return NS_OK;

}

void

SVGPreserveAspectRatio::ToString(nsAString& aValueAsString) const

{

  MOZ_ASSERT(mAlign >= SVG_ALIGN_MIN_VALID && mAlign <= SVG_ALIGN_MAX_VALID,

             "Unknown align");

  aValueAsString.AssignASCII(sAlignStrings[mAlign - SVG_ALIGN_MIN_VALID]);

  if (mAlign != uint8_t(SVG_PRESERVEASPECTRATIO_NONE)) {

    MOZ_ASSERT(mMeetOrSlice >= SVG_MEETORSLICE_MIN_VALID &&

               mMeetOrSlice <= SVG_MEETORSLICE_MAX_VALID,

               "Unknown meetOrSlice");

    aValueAsString.Append(' ');

    aValueAsString.AppendASCII(sMeetOrSliceStrings[mMeetOrSlice - SVG_MEETORSLICE_MIN_VALID]);

  }

}

bool

SVGPreserveAspectRatio::operator==(const SVGPreserveAspectRatio& aOther) const

{

  return mAlign == aOther.mAlign &&

    mMeetOrSlice == aOther.mMeetOrSlice;

}

JSObject*

DOMSVGPreserveAspectRatio::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)

{

  return mozilla::dom::SVGPreserveAspectRatio_Binding::Wrap(aCx, this, aGivenProto);

}

uint16_t

DOMSVGPreserveAspectRatio::Align()

{

  if (mIsBaseValue) {

    return mVal->GetBaseValue().GetAlign();

  }

  mSVGElement->FlushAnimations();

  return mVal->GetAnimValue().GetAlign();

}

void

DOMSVGPreserveAspectRatio::SetAlign(uint16_t aAlign, ErrorResult& rv)

{

  if (!mIsBaseValue) {

    rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);

    return;

  }

  rv = mVal->SetBaseAlign(aAlign, mSVGElement);

}

uint16_t

DOMSVGPreserveAspectRatio::MeetOrSlice()

{

  if (mIsBaseValue) {

    return mVal->GetBaseValue().GetMeetOrSlice();

  }

  mSVGElement->FlushAnimations();

  return mVal->GetAnimValue().GetMeetOrSlice();

}

void

DOMSVGPreserveAspectRatio::SetMeetOrSlice(uint16_t aMeetOrSlice, ErrorResult& rv)

{

  if (!mIsBaseValue) {

    rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);

    return;

  }

  rv = mVal->SetBaseMeetOrSlice(aMeetOrSlice, mSVGElement);

}