third_party/WebKit/Source/core/css/cssom/CSSURLImageValue.h

// 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.

#ifndef CSSURLImageValue_h
#define CSSURLImageValue_h

#include "base/macros.h"
#include "core/css/cssom/CSSStyleImageValue.h"
#include "platform/bindings/ScriptState.h"

namespace blink {

class CORE_EXPORT CSSURLImageValue final : public CSSStyleImageValue {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static CSSURLImageValue* Create(ScriptState* script_state,
                                  const AtomicString& url,
                                  ExceptionState& exception_state) {
    const auto* execution_context = ExecutionContext::From(script_state);
    DCHECK(execution_context);
    KURL parsed_url = execution_context->CompleteURL(url);
    if (!parsed_url.IsValid()) {
      exception_state.ThrowTypeError("Failed to parse URL from " + url);
      return nullptr;
    }
    // Use absolute URL for CSSImageValue but keep relative URL for
    // getter and serialization.
    return new CSSURLImageValue(
        CSSImageValue::Create(url, parsed_url, Referrer()));
  }
  static CSSURLImageValue* Create(const CSSImageValue* image_value) {
    return new CSSURLImageValue(image_value);
  }

  StyleValueType GetType() const override { return kURLImageType; }

  const CSSValue* ToCSSValue() const override { return CssImageValue(); }

  const String& url() const { return CssImageValue()->RelativeUrl(); }

 private:
  explicit CSSURLImageValue(const CSSImageValue* image_value)
      : CSSStyleImageValue(image_value) {}
  DISALLOW_COPY_AND_ASSIGN(CSSURLImageValue);
};

}  // namespace blink

#endif  // CSSResourceValue_h