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/*
* Copyright (C) 2004 Zack Rusin <zack@kde.org>
* Copyright (C) 2004-2019 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#pragma once
#include "PseudoElementIdentifier.h"
#include <span>
#include <wtf/RefPtr.h>
namespace WebCore {
namespace Style {
struct Color;
}
class Animation;
class CSSColorValue;
class CSSFunctionValue;
class CSSPrimitiveValue;
class CSSValue;
class CSSValueList;
class Element;
class FilterOperations;
class MutableStyleProperties;
class Node;
class RenderElement;
class RenderStyle;
class ShadowData;
class StylePropertyShorthand;
class TransformOperation;
class TransformationMatrix;
struct Length;
struct PropertyValue;
enum CSSPropertyID : uint16_t;
enum CSSValueID : uint16_t;
enum class PseudoId : uint32_t;
enum class SVGPaintType : uint8_t;
using CSSValueListBuilder = Vector<Ref<CSSValue>, 4>;
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(ComputedStyleExtractor);
class ComputedStyleExtractor {
WTF_MAKE_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(ComputedStyleExtractor);
public:
ComputedStyleExtractor(Node*, bool allowVisitedStyle = false);
ComputedStyleExtractor(Node*, bool allowVisitedStyle, const std::optional<Style::PseudoElementIdentifier>&);
ComputedStyleExtractor(Element*, bool allowVisitedStyle = false);
ComputedStyleExtractor(Element*, bool allowVisitedStyle, const std::optional<Style::PseudoElementIdentifier>&);
enum class UpdateLayout : bool { No, Yes };
enum class PropertyValueType : bool { Resolved, Computed };
bool hasProperty(CSSPropertyID) const;
RefPtr<CSSValue> propertyValue(CSSPropertyID, UpdateLayout = UpdateLayout::Yes, PropertyValueType = PropertyValueType::Resolved) const;
RefPtr<CSSValue> valueForPropertyInStyle(const RenderStyle&, CSSPropertyID, RenderElement* = nullptr, PropertyValueType = PropertyValueType::Resolved) const;
String customPropertyText(const AtomString& propertyName) const;
RefPtr<CSSValue> customPropertyValue(const AtomString& propertyName) const;
// Helper methods for HTML editing.
Ref<MutableStyleProperties> copyProperties(std::span<const CSSPropertyID>) const;
Ref<MutableStyleProperties> copyProperties() const;
RefPtr<CSSPrimitiveValue> getFontSizeCSSValuePreferringKeyword() const;
bool useFixedFontDefaultSize() const;
bool propertyMatches(CSSPropertyID, const CSSValue*) const;
bool propertyMatches(CSSPropertyID, CSSValueID) const;
static Ref<CSSValue> cssValueForFilter(const RenderStyle&, const FilterOperations&);
static Ref<CSSValue> cssValueForAppleColorFilter(const RenderStyle&, const FilterOperations&);
static Ref<CSSColorValue> currentColorOrValidColor(const RenderStyle&, const Style::Color&);
static Ref<CSSFunctionValue> matrixTransformValue(const TransformationMatrix&, const RenderStyle&);
static Ref<CSSPrimitiveValue> zoomAdjustedPixelValueForLength(const Length&, const RenderStyle&);
static bool updateStyleIfNeededForProperty(Element&, CSSPropertyID);
private:
// The renderer we should use for resolving layout-dependent properties.
RenderElement* styledRenderer() const;
RefPtr<CSSValue> svgPropertyValue(CSSPropertyID) const;
Ref<CSSValue> adjustSVGPaint(SVGPaintType, const String& url, Ref<CSSValue> color) const;
Ref<CSSValueList> getCSSPropertyValuesForShorthandProperties(const StylePropertyShorthand&) const;
RefPtr<CSSValueList> getCSSPropertyValuesFor2SidesShorthand(const StylePropertyShorthand&) const;
RefPtr<CSSValueList> getCSSPropertyValuesFor4SidesShorthand(const StylePropertyShorthand&) const;
size_t getLayerCount(CSSPropertyID) const;
Ref<CSSValue> getFillLayerPropertyShorthandValue(CSSPropertyID, const StylePropertyShorthand& propertiesBeforeSlashSeparator, const StylePropertyShorthand& propertiesAfterSlashSeparator, CSSPropertyID lastLayerProperty) const;
Ref<CSSValue> getBackgroundShorthandValue() const;
Ref<CSSValue> getMaskShorthandValue() const;
Ref<CSSValueList> getCSSPropertyValuesForGridShorthand(const StylePropertyShorthand&) const;
Ref<CSSValue> fontVariantShorthandValue() const;
RefPtr<CSSValue> textWrapShorthandValue(const RenderStyle&) const;
RefPtr<CSSValue> whiteSpaceShorthandValue(const RenderStyle&) const;
RefPtr<CSSValue> textBoxShorthandValue(const RenderStyle&) const;
RefPtr<CSSValue> lineClampShorthandValue(const RenderStyle&) const;
RefPtr<Element> m_element;
std::optional<Style::PseudoElementIdentifier> m_pseudoElementIdentifier;
bool m_allowVisitedStyle;
};
RefPtr<CSSFunctionValue> transformOperationAsCSSValue(const TransformOperation&, const RenderStyle&);
} // namespace WebCore
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