/* -*- 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 "nsSVGNumberPair.h"

#include "nsSVGAttrTearoffTable.h"

#include "nsCharSeparatedTokenizer.h"

#include "nsSMILValue.h"

#include "SVGContentUtils.h"

#include "SVGNumberPairSMILType.h"

using namespace mozilla;

using namespace mozilla::dom;

static nsSVGAttrTearoffTable<nsSVGNumberPair, nsSVGNumberPair::DOMAnimatedNumber>

  sSVGFirstAnimatedNumberTearoffTable;

static nsSVGAttrTearoffTable<nsSVGNumberPair, nsSVGNumberPair::DOMAnimatedNumber>

  sSVGSecondAnimatedNumberTearoffTable;

static nsresult

ParseNumberOptionalNumber(const nsAString& aValue,

                          float aValues[2])

{

  nsCharSeparatedTokenizerTemplate<nsContentUtils::IsHTMLWhitespace>

    tokenizer(aValue, ',',

              nsCharSeparatedTokenizer::SEPARATOR_OPTIONAL);

  if (tokenizer.whitespaceBeforeFirstToken()) {

    return NS_ERROR_DOM_SYNTAX_ERR;

  }

  uint32_t i;

  for (i = 0; i < 2 && tokenizer.hasMoreTokens(); ++i) {

    if (!SVGContentUtils::ParseNumber(tokenizer.nextToken(), aValues[i])) {

      return NS_ERROR_DOM_SYNTAX_ERR;

    }

  }

  if (i == 1) {

    aValues[1] = aValues[0];

  }

  if (i == 0 ||                                   // Too few values.

      tokenizer.hasMoreTokens() ||                // Too many values.

      tokenizer.whitespaceAfterCurrentToken() ||  // Trailing whitespace.

      tokenizer.separatorAfterCurrentToken()) {   // Trailing comma.

    return NS_ERROR_DOM_SYNTAX_ERR;

  }

  return NS_OK;

}

nsresult

nsSVGNumberPair::SetBaseValueString(const nsAString &aValueAsString,

                                    nsSVGElement *aSVGElement)

{

  float val[2];

  nsresult rv = ParseNumberOptionalNumber(aValueAsString, val);

  if (NS_FAILED(rv)) {

    return rv;

  }

  mBaseVal[0] = val[0];

  mBaseVal[1] = val[1];

  mIsBaseSet = true;

  if (!mIsAnimated) {

    mAnimVal[0] = mBaseVal[0];

    mAnimVal[1] = mBaseVal[1];

  }

  else {

    aSVGElement->AnimationNeedsResample();

  }

  // We don't need to call Will/DidChange* here - we're only called by

  // nsSVGElement::ParseAttribute under Element::SetAttr,

  // which takes care of notifying.

  return NS_OK;

}

void

nsSVGNumberPair::GetBaseValueString(nsAString &aValueAsString) const

{

  aValueAsString.Truncate();

  aValueAsString.AppendFloat(mBaseVal[0]);

  if (mBaseVal[0] != mBaseVal[1]) {

    aValueAsString.AppendLiteral(", ");

    aValueAsString.AppendFloat(mBaseVal[1]);

  }

}

void

nsSVGNumberPair::SetBaseValue(float aValue, PairIndex aPairIndex,

                              nsSVGElement *aSVGElement)

{

  uint32_t index = (aPairIndex == eFirst ? 0 : 1);

  if (mIsBaseSet && mBaseVal[index] == aValue) {

    return;

  }

  nsAttrValue emptyOrOldValue = aSVGElement->WillChangeNumberPair(mAttrEnum);

  mBaseVal[index] = aValue;

  mIsBaseSet = true;

  if (!mIsAnimated) {

    mAnimVal[index] = aValue;

  }

  else {

    aSVGElement->AnimationNeedsResample();

  }

  aSVGElement->DidChangeNumberPair(mAttrEnum, emptyOrOldValue);

}

void

nsSVGNumberPair::SetBaseValues(float aValue1, float aValue2,

                               nsSVGElement *aSVGElement)

{

  if (mIsBaseSet && mBaseVal[0] == aValue1 && mBaseVal[1] == aValue2) {

    return;

  }

  nsAttrValue emptyOrOldValue = aSVGElement->WillChangeNumberPair(mAttrEnum);

  mBaseVal[0] = aValue1;

  mBaseVal[1] = aValue2;

  mIsBaseSet = true;

  if (!mIsAnimated) {

    mAnimVal[0] = aValue1;

    mAnimVal[1] = aValue2;

  }

  else {

    aSVGElement->AnimationNeedsResample();

  }

  aSVGElement->DidChangeNumberPair(mAttrEnum, emptyOrOldValue);

}

void

nsSVGNumberPair::SetAnimValue(const float aValue[2], nsSVGElement *aSVGElement)

{

  if (mIsAnimated && mAnimVal[0] == aValue[0] && mAnimVal[1] == aValue[1]) {

    return;

  }

  mAnimVal[0] = aValue[0];

  mAnimVal[1] = aValue[1];

  mIsAnimated = true;

  aSVGElement->DidAnimateNumberPair(mAttrEnum);

}

already_AddRefed<SVGAnimatedNumber>

nsSVGNumberPair::ToDOMAnimatedNumber(PairIndex aIndex,

                                     nsSVGElement* aSVGElement)

{

  RefPtr<DOMAnimatedNumber> domAnimatedNumber =

    aIndex == eFirst ? sSVGFirstAnimatedNumberTearoffTable.GetTearoff(this) :

                       sSVGSecondAnimatedNumberTearoffTable.GetTearoff(this);

  if (!domAnimatedNumber) {

    domAnimatedNumber = new DOMAnimatedNumber(this, aIndex, aSVGElement);

    if (aIndex == eFirst) {

      sSVGFirstAnimatedNumberTearoffTable.AddTearoff(this, domAnimatedNumber);

    } else {

      sSVGSecondAnimatedNumberTearoffTable.AddTearoff(this, domAnimatedNumber);

    }

  }

  return domAnimatedNumber.forget();

}

nsSVGNumberPair::DOMAnimatedNumber::~DOMAnimatedNumber()

{

  if (mIndex == eFirst) {

    sSVGFirstAnimatedNumberTearoffTable.RemoveTearoff(mVal);

  } else {

    sSVGSecondAnimatedNumberTearoffTable.RemoveTearoff(mVal);

  }

}

UniquePtr<nsISMILAttr>

nsSVGNumberPair::ToSMILAttr(nsSVGElement *aSVGElement)

{

  return MakeUnique<SMILNumberPair>(this, aSVGElement);

}

nsresult

nsSVGNumberPair::SMILNumberPair::ValueFromString(const nsAString& aStr,

                                                 const dom::SVGAnimationElement* /*aSrcElement*/,

                                                 nsSMILValue& aValue,

                                                 bool& aPreventCachingOfSandwich) const

{

  float values[2];

  nsresult rv = ParseNumberOptionalNumber(aStr, values);

  if (NS_FAILED(rv)) {

    return rv;

  }

  nsSMILValue val(&SVGNumberPairSMILType::sSingleton);

  val.mU.mNumberPair[0] = values[0];

  val.mU.mNumberPair[1] = values[1];

  aValue = val;

  aPreventCachingOfSandwich = false;

  return NS_OK;

}

nsSMILValue

nsSVGNumberPair::SMILNumberPair::GetBaseValue() const

{

  nsSMILValue val(&SVGNumberPairSMILType::sSingleton);

  val.mU.mNumberPair[0] = mVal->mBaseVal[0];

  val.mU.mNumberPair[1] = mVal->mBaseVal[1];

  return val;

}

void

nsSVGNumberPair::SMILNumberPair::ClearAnimValue()

{

  if (mVal->mIsAnimated) {

    mVal->mIsAnimated = false;

    mVal->mAnimVal[0] = mVal->mBaseVal[0];

    mVal->mAnimVal[1] = mVal->mBaseVal[1];

    mSVGElement->DidAnimateNumberPair(mVal->mAttrEnum);

  }

}

nsresult

nsSVGNumberPair::SMILNumberPair::SetAnimValue(const nsSMILValue& aValue)

{

  NS_ASSERTION(aValue.mType == &SVGNumberPairSMILType::sSingleton,

               "Unexpected type to assign animated value");

  if (aValue.mType == &SVGNumberPairSMILType::sSingleton) {

    mVal->SetAnimValue(aValue.mU.mNumberPair, mSVGElement);

  }

  return NS_OK;

}