/* -*- 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 "FlexLine.h"

#include "FlexItem.h"

#include "mozilla/dom/FlexBinding.h"

#include "nsFlexContainerFrame.h"

namespace mozilla {

namespace dom {

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(FlexLine, mParent, mItems)

NS_IMPL_CYCLE_COLLECTING_ADDREF(FlexLine)

NS_IMPL_CYCLE_COLLECTING_RELEASE(FlexLine)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FlexLine)

  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY

  NS_INTERFACE_MAP_ENTRY(nsISupports)

NS_INTERFACE_MAP_END

FlexLine::FlexLine(Flex* aParent,

                   const ComputedFlexLineInfo* aLine)

  : mParent(aParent)

{

  MOZ_ASSERT(aLine,

    "Should never be instantiated with a null ComputedFlexLineInfo.");

  // Eagerly copy values from aLine, because we're not

  // going to keep it around.

  switch (aLine->mGrowthState) {

    case ComputedFlexLineInfo::GrowthState::SHRINKING:

      mGrowthState = FlexLineGrowthState::Shrinking;

      break;

    case ComputedFlexLineInfo::GrowthState::GROWING:

      mGrowthState = FlexLineGrowthState::Growing;

      break;

    default:

      mGrowthState = FlexLineGrowthState::Unchanged;

  };

  // Convert all the app unit values into css pixels.

  mCrossStart = nsPresContext::AppUnitsToDoubleCSSPixels(

    aLine->mCrossStart);

  mCrossSize = nsPresContext::AppUnitsToDoubleCSSPixels(

    aLine->mCrossSize);

  mFirstBaselineOffset = nsPresContext::AppUnitsToDoubleCSSPixels(

    aLine->mFirstBaselineOffset);

  mLastBaselineOffset = nsPresContext::AppUnitsToDoubleCSSPixels(

    aLine->mLastBaselineOffset);

  mItems.SetLength(aLine->mItems.Length());

  uint32_t index = 0;

  for (auto&& i : aLine->mItems) {

    FlexItem* item = new FlexItem(this, &i);

    mItems.ElementAt(index) = item;

    index++;

  }

}

JSObject*

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

{

  return FlexLine_Binding::Wrap(aCx, this, aGivenProto);

}

FlexLineGrowthState

FlexLine::GrowthState() const

{

  return mGrowthState;

}

double

FlexLine::CrossStart() const

{

  return mCrossStart;

}

double

FlexLine::CrossSize() const

{

  return mCrossSize;

}

double

FlexLine::FirstBaselineOffset() const

{

  return mFirstBaselineOffset;

}

double

FlexLine::LastBaselineOffset() const

{

  return mLastBaselineOffset;

}

void

FlexLine::GetItems(nsTArray<RefPtr<FlexItem>>& aResult)

{

  aResult.AppendElements(mItems);

}

} // namespace dom

} // namespace mozilla