/* -*- 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 "nsSVGClass.h"

#include "mozilla/dom/SVGAnimatedString.h"

#include "mozilla/Move.h"

#include "nsSVGElement.h"

#include "nsSMILValue.h"

#include "SMILStringType.h"

using namespace mozilla;

using namespace mozilla::dom;

struct DOMAnimatedString final : public SVGAnimatedString

{

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMAnimatedString)

  DOMAnimatedString(nsSVGClass* aVal, nsSVGElement* aSVGElement)

    : SVGAnimatedString(aSVGElement)

    , mVal(aVal)

  {}

  nsSVGClass* mVal; // kept alive because it belongs to content

  void GetBaseVal(nsAString& aResult) override

  {

    mVal->GetBaseValue(aResult, mSVGElement);

  }

  void SetBaseVal(const nsAString& aValue) override

  {

    mVal->SetBaseValue(aValue, mSVGElement, true);

  }

  void GetAnimVal(nsAString& aResult) override;

private:

  ~DOMAnimatedString() {}

};

NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(DOMAnimatedString, mSVGElement)

NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMAnimatedString)

NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMAnimatedString)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMAnimatedString)

  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY

  NS_INTERFACE_MAP_ENTRY(nsISupports)

NS_INTERFACE_MAP_END

already_AddRefed<SVGAnimatedString>

nsSVGClass::ToDOMAnimatedString(nsSVGElement* aSVGElement)

{

  RefPtr<DOMAnimatedString> result = new DOMAnimatedString(this, aSVGElement);

  return result.forget();

}

/* Implementation */

void

nsSVGClass::SetBaseValue(const nsAString& aValue,

                         nsSVGElement *aSVGElement,

                         bool aDoSetAttr)

{

  NS_ASSERTION(aSVGElement, "Null element passed to SetBaseValue");

  aSVGElement->SetMayHaveClass();

  if (aDoSetAttr) {

    aSVGElement->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, aValue, true);

  }

  if (mAnimVal) {

    aSVGElement->AnimationNeedsResample();

  }

}

void

nsSVGClass::GetBaseValue(nsAString& aValue, const nsSVGElement *aSVGElement) const

{

  aSVGElement->GetAttr(kNameSpaceID_None, nsGkAtoms::_class, aValue);

}

void

nsSVGClass::GetAnimValue(nsAString& aResult, const nsSVGElement *aSVGElement) const

{

  if (mAnimVal) {

    aResult = *mAnimVal;

    return;

  }

  aSVGElement->GetAttr(kNameSpaceID_None, nsGkAtoms::_class, aResult);

}

void

nsSVGClass::SetAnimValue(const nsAString& aValue, nsSVGElement *aSVGElement)

{

  if (mAnimVal && mAnimVal->Equals(aValue)) {

    return;

  }

  if (!mAnimVal) {

    mAnimVal = new nsString();

  }

  *mAnimVal = aValue;

  aSVGElement->SetMayHaveClass();

  aSVGElement->DidAnimateClass();

}

void

DOMAnimatedString::GetAnimVal(nsAString& aResult)

{

  mSVGElement->FlushAnimations();

  mVal->GetAnimValue(aResult, mSVGElement);

}

UniquePtr<nsISMILAttr>

nsSVGClass::ToSMILAttr(nsSVGElement *aSVGElement)

{

  return MakeUnique<SMILString>(this, aSVGElement);

}

nsresult

nsSVGClass::SMILString::ValueFromString(const nsAString& aStr,

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

                                        nsSMILValue& aValue,

                                        bool& aPreventCachingOfSandwich) const

{

  nsSMILValue val(SMILStringType::Singleton());

  *static_cast<nsAString*>(val.mU.mPtr) = aStr;

  aValue = std::move(val);

  aPreventCachingOfSandwich = false;

  return NS_OK;

}

nsSMILValue

nsSVGClass::SMILString::GetBaseValue() const

{

  nsSMILValue val(SMILStringType::Singleton());

  mSVGElement->GetAttr(kNameSpaceID_None, nsGkAtoms::_class,

                       *static_cast<nsAString*>(val.mU.mPtr));

  return val;

}

void

nsSVGClass::SMILString::ClearAnimValue()

{

  if (mVal->mAnimVal) {

    mVal->mAnimVal = nullptr;

    mSVGElement->DidAnimateClass();

  }

}

nsresult

nsSVGClass::SMILString::SetAnimValue(const nsSMILValue& aValue)

{

  NS_ASSERTION(aValue.mType == SMILStringType::Singleton(),

               "Unexpected type to assign animated value");

  if (aValue.mType == SMILStringType::Singleton()) {

    mVal->SetAnimValue(*static_cast<nsAString*>(aValue.mU.mPtr), mSVGElement);

  }

  return NS_OK;

}