/* -*- 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/. */

/* DOM object representing lists of values in DOM computed style */

#include "nsDOMCSSValueList.h"

#include "nsString.h"

#include "mozilla/ErrorResult.h"

#include "mozilla/Move.h"

using namespace mozilla;

using namespace mozilla::dom;

nsDOMCSSValueList::nsDOMCSSValueList(bool aCommaDelimited, bool aReadonly)

  : CSSValue(), mCommaDelimited(aCommaDelimited), mReadonly(aReadonly)

{

}

nsDOMCSSValueList::~nsDOMCSSValueList() = default;

void

nsDOMCSSValueList::AppendCSSValue(already_AddRefed<CSSValue> aValue)

{

  RefPtr<CSSValue> val = aValue;

  mCSSValues.AppendElement(std::move(val));

}

void

nsDOMCSSValueList::GetCssText(nsAString& aCssText)

{

  aCssText.Truncate();

  uint32_t count = mCSSValues.Length();

  nsAutoString separator;

  if (mCommaDelimited) {

    separator.AssignLiteral(", ");

  }

  else {

    separator.Assign(char16_t(' '));

  }

  nsAutoString tmpStr;

  for (uint32_t i = 0; i < count; ++i) {

    CSSValue *cssValue = mCSSValues[i];

    NS_ASSERTION(cssValue, "Eek!  Someone filled the value list with null CSSValues!");

    ErrorResult dummy;

    if (cssValue) {

      cssValue->GetCssText(tmpStr, dummy);

      if (tmpStr.IsEmpty()) {

#ifdef DEBUG_caillon

        NS_ERROR("Eek!  An empty CSSValue!  Bad!");

#endif

        continue;

      }

      // If this isn't the first item in the list, then

      // it's ok to append a separator.

      if (!aCssText.IsEmpty()) {

        aCssText.Append(separator);

      }

      aCssText.Append(tmpStr);

    }

  }

}

void

nsDOMCSSValueList::GetCssText(nsString& aCssText, ErrorResult& aRv)

{

  GetCssText(aCssText);

}

void

nsDOMCSSValueList::SetCssText(const nsAString& aText, ErrorResult& aRv)

{

  if (mReadonly) {

    aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);

    return;

  }

  MOZ_ASSERT_UNREACHABLE("Can't SetCssText yet: please write me!");

}

uint16_t

nsDOMCSSValueList::CssValueType() const

{

  return CSSValue::CSS_VALUE_LIST;

}