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// Copyright 2015 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_CSS_STYLE_VALUE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_STYLE_VALUE_H_
#include "base/macros.h"
#include "base/optional.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/css_property_names.h"
#include "third_party/blink/renderer/core/css/css_value.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class CSSSyntaxComponent;
class ExceptionState;
class ExecutionContext;
enum class SecureContextMode;
class CSSStyleValue;
using CSSStyleValueVector = HeapVector<Member<CSSStyleValue>>;
// The base class for all CSS values returned by the Typed OM.
// See CSSStyleValue.idl for additional documentation about this class.
class CORE_EXPORT CSSStyleValue : public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
// This enum ordering is significant for CSSStyleValue::IsNumericValue.
enum StyleValueType {
kUnknownType,
kShorthandType,
kUnparsedType,
kKeywordType,
// Start of CSSNumericValue subclasses
kUnitType,
kSumType,
kProductType,
kNegateType,
kInvertType,
kMinType,
kMaxType,
// End of CSSNumericValue subclasses
kTransformType,
kPositionType,
kURLImageType,
};
static CSSStyleValue* parse(const ExecutionContext*,
const String& property_name,
const String& value,
ExceptionState&);
static CSSStyleValueVector parseAll(const ExecutionContext*,
const String& property_name,
const String& value,
ExceptionState&);
~CSSStyleValue() override = default;
virtual StyleValueType GetType() const = 0;
bool IsNumericValue() const {
return GetType() >= kUnitType && GetType() <= kMaxType;
}
virtual const CSSValue* ToCSSValue() const = 0;
// FIXME: We should make this a method on CSSProperty instead.
virtual const CSSValue* ToCSSValueWithProperty(
CSSPropertyID,
const CSSSyntaxComponent*) const {
return ToCSSValue();
}
virtual String toString() const;
// TODO(801935): Actually use this for serialization in subclasses.
// Currently only used by CSSUnsupportedStyleValue because it's
// immutable, so we have to worry about the serialization changing.
const String& CSSText() const { return css_text_; }
void SetCSSText(const String& css_text) { css_text_ = css_text; }
protected:
CSSStyleValue() = default;
private:
String css_text_;
DISALLOW_COPY_AND_ASSIGN(CSSStyleValue);
};
} // namespace blink
#endif
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