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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 "Animation.h"
#include "CSSStyleDeclaration.h"
#include "RenderStyleConstants.h"
#include "SVGRenderStyleDefs.h"
#include "TextFlags.h"
#include <wtf/FixedVector.h>
#include <wtf/IsoMalloc.h>
#include <wtf/RefPtr.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class CSSFontStyleValue;
class CSSPrimitiveValue;
class CSSValueList;
class Color;
class Element;
class FilterOperations;
class FontSelectionValue;
class MutableStyleProperties;
class Node;
class RenderElement;
class RenderStyle;
class SVGPaint;
class ShadowData;
class StyleProperties;
class StylePropertyShorthand;
enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true };
enum AdjustPixelValuesForComputedStyle { AdjustPixelValues, DoNotAdjustPixelValues };
class ComputedStyleExtractor {
WTF_MAKE_FAST_ALLOCATED;
public:
ComputedStyleExtractor(Node*, bool allowVisitedStyle = false, PseudoId = PseudoId::None);
ComputedStyleExtractor(Element*, bool allowVisitedStyle = false, PseudoId = PseudoId::None);
enum class PropertyValueType : bool { Resolved, Computed };
RefPtr<CSSValue> propertyValue(CSSPropertyID, EUpdateLayout = UpdateLayout, PropertyValueType = PropertyValueType::Resolved);
RefPtr<CSSValue> valueForPropertyInStyle(const RenderStyle&, CSSPropertyID, RenderElement* = nullptr);
String customPropertyText(const AtomString& propertyName);
RefPtr<CSSValue> customPropertyValue(const AtomString& propertyName);
// Helper methods for HTML editing.
Ref<MutableStyleProperties> copyPropertiesInSet(const CSSPropertyID* set, unsigned length);
Ref<MutableStyleProperties> copyProperties();
RefPtr<CSSPrimitiveValue> getFontSizeCSSValuePreferringKeyword();
bool useFixedFontDefaultSize();
bool propertyMatches(CSSPropertyID, const CSSValue*);
static Ref<CSSValue> valueForFilter(const RenderStyle&, const FilterOperations&, AdjustPixelValuesForComputedStyle = AdjustPixelValues);
static Ref<CSSPrimitiveValue> fontNonKeywordWeightFromStyleValue(FontSelectionValue);
static Ref<CSSPrimitiveValue> fontWeightFromStyleValue(FontSelectionValue);
static Ref<CSSPrimitiveValue> fontNonKeywordStretchFromStyleValue(FontSelectionValue);
static Ref<CSSPrimitiveValue> fontStretchFromStyleValue(FontSelectionValue);
static Ref<CSSFontStyleValue> fontNonKeywordStyleFromStyleValue(FontSelectionValue);
static Ref<CSSFontStyleValue> fontStyleFromStyleValue(std::optional<FontSelectionValue>, FontStyleAxis);
static void addValueForAnimationPropertyToList(CSSValueList&, CSSPropertyID, const Animation*);
private:
// The renderer we should use for resolving layout-dependent properties.
RenderElement* styledRenderer() const;
RefPtr<CSSValue> svgPropertyValue(CSSPropertyID);
Ref<CSSValue> adjustSVGPaintForCurrentColor(SVGPaintType, const String& url, const Color&, const Color& currentColor) const;
static Ref<CSSValue> valueForShadow(const ShadowData*, CSSPropertyID, const RenderStyle&, AdjustPixelValuesForComputedStyle = AdjustPixelValues);
Ref<CSSPrimitiveValue> currentColorOrValidColor(const RenderStyle*, const Color&) const;
Ref<CSSValueList> getCSSPropertyValuesForShorthandProperties(const StylePropertyShorthand&);
RefPtr<CSSValueList> getCSSPropertyValuesFor2SidesShorthand(const StylePropertyShorthand&);
RefPtr<CSSValueList> getCSSPropertyValuesFor4SidesShorthand(const StylePropertyShorthand&);
size_t getLayerCount(CSSPropertyID);
Ref<CSSValue> getFillLayerPropertyShorthandValue(CSSPropertyID, const StylePropertyShorthand& propertiesBeforeSlashSeparator, const StylePropertyShorthand& propertiesAfterSlashSeparator, CSSPropertyID lastLayerProperty);
Ref<CSSValue> getBackgroundShorthandValue();
Ref<CSSValue> getMaskShorthandValue();
Ref<CSSValueList> getCSSPropertyValuesForGridShorthand(const StylePropertyShorthand&);
RefPtr<Element> m_element;
PseudoId m_pseudoElementSpecifier;
bool m_allowVisitedStyle;
};
class CSSComputedStyleDeclaration final : public CSSStyleDeclaration {
WTF_MAKE_ISO_ALLOCATED_EXPORT(CSSComputedStyleDeclaration, WEBCORE_EXPORT);
public:
WEBCORE_EXPORT static Ref<CSSComputedStyleDeclaration> create(Element&, bool allowVisitedStyle = false, StringView pseudoElementName = StringView { });
virtual ~CSSComputedStyleDeclaration();
WEBCORE_EXPORT void ref() final;
WEBCORE_EXPORT void deref() final;
String getPropertyValue(CSSPropertyID) const;
private:
CSSComputedStyleDeclaration(Element&, bool allowVisitedStyle, StringView);
// CSSOM functions. Don't make these public.
CSSRule* parentRule() const final;
unsigned length() const final;
String item(unsigned index) const final;
RefPtr<DeprecatedCSSOMValue> getPropertyCSSValue(const String& propertyName) final;
String getPropertyValue(const String& propertyName) final;
String getPropertyPriority(const String& propertyName) final;
String getPropertyShorthand(const String& propertyName) final;
bool isPropertyImplicit(const String& propertyName) final;
ExceptionOr<void> setProperty(const String& propertyName, const String& value, const String& priority) final;
ExceptionOr<String> removeProperty(const String& propertyName) final;
String cssText() const final;
ExceptionOr<void> setCssText(const String&) final;
RefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID) final;
String getPropertyValueInternal(CSSPropertyID) final;
ExceptionOr<void> setPropertyInternal(CSSPropertyID, const String& value, bool important) final;
Ref<MutableStyleProperties> copyProperties() const final;
RefPtr<CSSValue> getPropertyCSSValue(CSSPropertyID, EUpdateLayout = UpdateLayout) const;
const Settings* settings() const final;
const FixedVector<CSSPropertyID>& exposedComputedCSSPropertyIDs() const;
mutable Ref<Element> m_element;
PseudoId m_pseudoElementSpecifier;
bool m_allowVisitedStyle;
unsigned m_refCount { 1 };
};
} // namespace WebCore
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