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

/* vim: set expandtab shiftwidth=2 tabstop=2: */

/* 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 "StyleInfo.h"

#include "mozilla/dom/Element.h"

#include "nsComputedDOMStyle.h"

#include "nsCSSProps.h"

#include "nsIFrame.h"

using namespace mozilla;

using namespace mozilla::a11y;

StyleInfo::StyleInfo(dom::Element* aElement) :

  mElement(aElement)

{

  mComputedStyle =

    nsComputedDOMStyle::GetComputedStyleNoFlush(aElement, nullptr);

}

void

StyleInfo::Display(nsAString& aValue)

{

  aValue.Truncate();

  AppendASCIItoUTF16(

    nsCSSProps::ValueToKeyword(mComputedStyle->StyleDisplay()->mDisplay,

                               nsCSSProps::kDisplayKTable), aValue);

}

void

StyleInfo::TextAlign(nsAString& aValue)

{

  aValue.Truncate();

  AppendASCIItoUTF16(

    nsCSSProps::ValueToKeyword(mComputedStyle->StyleText()->mTextAlign,

                               nsCSSProps::kTextAlignKTable), aValue);

}

void

StyleInfo::TextIndent(nsAString& aValue)

{

  aValue.Truncate();

  const nsStyleCoord& styleCoord =

    mComputedStyle->StyleText()->mTextIndent;

  nscoord coordVal = 0;

  switch (styleCoord.GetUnit()) {

    case eStyleUnit_Coord:

      coordVal = styleCoord.GetCoordValue();

      aValue.AppendFloat(nsPresContext::AppUnitsToFloatCSSPixels(coordVal));

      aValue.AppendLiteral("px");

      break;

    case eStyleUnit_Percent:

      aValue.AppendFloat(styleCoord.GetPercentValue() * 100);

      aValue.AppendLiteral("%");

      break;

    case eStyleUnit_Null:

    case eStyleUnit_Normal:

    case eStyleUnit_Auto:

    case eStyleUnit_None:

    case eStyleUnit_Factor:

    case eStyleUnit_Degree:

    case eStyleUnit_Grad:

    case eStyleUnit_Radian:

    case eStyleUnit_Turn:

    case eStyleUnit_FlexFraction:

    case eStyleUnit_Integer:

    case eStyleUnit_Enumerated:

    case eStyleUnit_Calc:

      aValue.AppendLiteral("0px");

      break;

  }

}

void

StyleInfo::Margin(Side aSide, nsAString& aValue)

{

  MOZ_ASSERT(mElement->GetPrimaryFrame(), " mElement->GetPrimaryFrame() needs to be valid pointer");

  aValue.Truncate();

  nscoord coordVal = mElement->GetPrimaryFrame()->GetUsedMargin().Side(aSide);

  aValue.AppendFloat(nsPresContext::AppUnitsToFloatCSSPixels(coordVal));

  aValue.AppendLiteral("px");

}

void

StyleInfo::FormatColor(const nscolor& aValue, nsString& aFormattedValue)

{

  // Combine the string like rgb(R, G, B) from nscolor.

  aFormattedValue.AppendLiteral("rgb(");

  aFormattedValue.AppendInt(NS_GET_R(aValue));

  aFormattedValue.AppendLiteral(", ");

  aFormattedValue.AppendInt(NS_GET_G(aValue));

  aFormattedValue.AppendLiteral(", ");

  aFormattedValue.AppendInt(NS_GET_B(aValue));

  aFormattedValue.Append(')');

}

void

StyleInfo::FormatTextDecorationStyle(uint8_t aValue, nsAString& aFormattedValue)

{

  nsCSSKeyword keyword =

    nsCSSProps::ValueToKeywordEnum(aValue,

                                   nsCSSProps::kTextDecorationStyleKTable);

  AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(keyword), aFormattedValue);

}