| // Copyright 2019 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 THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CROSS_THREAD_UNSUPPORTED_VALUE_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CROSS_THREAD_UNSUPPORTED_VALUE_H_ |
| |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/css/cssom/cross_thread_style_value.h" |
| #include "third_party/blink/renderer/platform/wtf/casting.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| |
| namespace blink { |
| |
| class CSSStyleValue; |
| |
| class CORE_EXPORT CrossThreadUnsupportedValue final |
| : public CrossThreadStyleValue { |
| public: |
| explicit CrossThreadUnsupportedValue(const String& value) : value_(value) {} |
| CrossThreadUnsupportedValue(const CrossThreadUnsupportedValue&) = delete; |
| CrossThreadUnsupportedValue& operator=(const CrossThreadUnsupportedValue&) = |
| delete; |
| ~CrossThreadUnsupportedValue() override = default; |
| |
| StyleValueType GetType() const override { |
| return StyleValueType::kUnknownType; |
| } |
| CSSStyleValue* ToCSSStyleValue() override; |
| std::unique_ptr<CrossThreadStyleValue> IsolatedCopy() const override; |
| |
| bool operator==(const CrossThreadStyleValue&) const override; |
| |
| private: |
| friend class CrossThreadStyleValueTest; |
| |
| String value_; |
| }; |
| |
| template <> |
| struct DowncastTraits<CrossThreadUnsupportedValue> { |
| static bool AllowFrom(const CrossThreadStyleValue& unsupported_value) { |
| return unsupported_value.GetType() == |
| CrossThreadStyleValue::StyleValueType::kUnknownType; |
| } |
| }; |
| |
| } // namespace blink |
| |
| #endif |