File: CSSPerspective.cpp

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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "core/css/cssom/CSSPerspective.h"

#include "bindings/core/v8/ExceptionState.h"

namespace blink {

CSSPerspective* CSSPerspective::create(const CSSLengthValue* length,
                                       ExceptionState& exceptionState) {
  if (length->containsPercent()) {
    exceptionState.throwTypeError(
        "CSSPerspective does not support CSSLengthValues with percent units");
    return nullptr;
  }
  return new CSSPerspective(length);
}

CSSPerspective* CSSPerspective::fromCSSValue(const CSSFunctionValue& value) {
  DCHECK_EQ(value.functionType(), CSSValuePerspective);
  DCHECK_EQ(value.length(), 1U);
  CSSLengthValue* length =
      CSSLengthValue::fromCSSValue(toCSSPrimitiveValue(value.item(0)));
  DCHECK(!length->containsPercent());
  return new CSSPerspective(length);
}

CSSFunctionValue* CSSPerspective::toCSSValue() const {
  CSSFunctionValue* result = CSSFunctionValue::create(CSSValuePerspective);
  result->append(*m_length->toCSSValue());
  return result;
}

}  // namespace blink