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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Concepts.h>
#include <AK/GenericShorthands.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <AK/URL.h>
#include <AK/Variant.h>
#include <AK/Vector.h>
#include <AK/WeakPtr.h>
#include <LibGfx/Painter.h>
#include <LibWeb/CSS/Enums.h>
#include <LibWeb/CSS/Length.h>
#include <LibWeb/CSS/ValueID.h>
#include <LibWeb/Forward.h>
namespace Web::CSS {
template<typename T>
struct ValueComparingNonnullRefPtr : public NonnullRefPtr<T> {
using NonnullRefPtr<T>::NonnullRefPtr;
ValueComparingNonnullRefPtr(NonnullRefPtr<T> const& other)
: NonnullRefPtr<T>(other)
{
}
ValueComparingNonnullRefPtr(NonnullRefPtr<T>&& other)
: NonnullRefPtr<T>(move(other))
{
}
bool operator==(ValueComparingNonnullRefPtr const& other) const
{
return this->ptr() == other.ptr() || this->ptr()->equals(*other);
}
private:
using NonnullRefPtr<T>::operator==;
};
template<typename T>
struct ValueComparingRefPtr : public RefPtr<T> {
using RefPtr<T>::RefPtr;
ValueComparingRefPtr(RefPtr<T> const& other)
: RefPtr<T>(other)
{
}
ValueComparingRefPtr(RefPtr<T>&& other)
: RefPtr<T>(move(other))
{
}
template<typename U>
bool operator==(ValueComparingNonnullRefPtr<U> const& other) const
{
return this->ptr() == other.ptr() || (this->ptr() && this->ptr()->equals(*other));
}
bool operator==(ValueComparingRefPtr const& other) const
{
return this->ptr() == other.ptr() || (this->ptr() && other.ptr() && this->ptr()->equals(*other));
}
private:
using RefPtr<T>::operator==;
};
using StyleValueVector = Vector<ValueComparingNonnullRefPtr<StyleValue const>>;
class StyleValue : public RefCounted<StyleValue> {
public:
virtual ~StyleValue() = default;
enum class Type {
Angle,
Background,
BackgroundRepeat,
BackgroundSize,
Border,
BorderRadius,
BorderRadiusShorthand,
Calculated,
Color,
ConicGradient,
Content,
Display,
Edge,
FilterValueList,
Flex,
FlexFlow,
Font,
Frequency,
GridAreaShorthand,
GridTemplateArea,
GridTrackPlacement,
GridTrackPlacementShorthand,
GridTrackSizeList,
GridTrackSizeListShorthand,
Identifier,
Image,
Inherit,
Initial,
Invalid,
Length,
LinearGradient,
ListStyle,
Numeric,
Overflow,
Percentage,
Position,
RadialGradient,
Rect,
Resolution,
Shadow,
String,
TextDecoration,
Time,
Transformation,
Unresolved,
Unset,
Url,
ValueList
};
Type type() const { return m_type; }
bool is_abstract_image() const { return AK::first_is_one_of(type(), Type::Image, Type::LinearGradient, Type::ConicGradient, Type::RadialGradient); }
bool is_angle() const { return type() == Type::Angle; }
bool is_background() const { return type() == Type::Background; }
bool is_background_repeat() const { return type() == Type::BackgroundRepeat; }
bool is_background_size() const { return type() == Type::BackgroundSize; }
bool is_border() const { return type() == Type::Border; }
bool is_border_radius() const { return type() == Type::BorderRadius; }
bool is_border_radius_shorthand() const { return type() == Type::BorderRadiusShorthand; }
bool is_calculated() const { return type() == Type::Calculated; }
bool is_color() const { return type() == Type::Color; }
bool is_conic_gradient() const { return type() == Type::ConicGradient; }
bool is_content() const { return type() == Type::Content; }
bool is_display() const { return type() == Type::Display; }
bool is_edge() const { return type() == Type::Edge; }
bool is_filter_value_list() const { return type() == Type::FilterValueList; }
bool is_flex() const { return type() == Type::Flex; }
bool is_flex_flow() const { return type() == Type::FlexFlow; }
bool is_font() const { return type() == Type::Font; }
bool is_frequency() const { return type() == Type::Frequency; }
bool is_grid_area_shorthand() const { return type() == Type::GridAreaShorthand; }
bool is_grid_template_area() const { return type() == Type::GridTemplateArea; }
bool is_grid_track_placement() const { return type() == Type::GridTrackPlacement; }
bool is_grid_track_placement_shorthand() const { return type() == Type::GridTrackPlacementShorthand; }
bool is_grid_track_size_list() const { return type() == Type::GridTrackSizeList; }
bool is_grid_track_size_list_shorthand() const { return type() == Type::GridTrackSizeListShorthand; }
bool is_identifier() const { return type() == Type::Identifier; }
bool is_image() const { return type() == Type::Image; }
bool is_inherit() const { return type() == Type::Inherit; }
bool is_initial() const { return type() == Type::Initial; }
bool is_length() const { return type() == Type::Length; }
bool is_linear_gradient() const { return type() == Type::LinearGradient; }
bool is_list_style() const { return type() == Type::ListStyle; }
bool is_numeric() const { return type() == Type::Numeric; }
bool is_overflow() const { return type() == Type::Overflow; }
bool is_percentage() const { return type() == Type::Percentage; }
bool is_position() const { return type() == Type::Position; }
bool is_radial_gradient() const { return type() == Type::RadialGradient; }
bool is_rect() const { return type() == Type::Rect; }
bool is_resolution() const { return type() == Type::Resolution; }
bool is_shadow() const { return type() == Type::Shadow; }
bool is_string() const { return type() == Type::String; }
bool is_text_decoration() const { return type() == Type::TextDecoration; }
bool is_time() const { return type() == Type::Time; }
bool is_transformation() const { return type() == Type::Transformation; }
bool is_unresolved() const { return type() == Type::Unresolved; }
bool is_unset() const { return type() == Type::Unset; }
bool is_url() const { return type() == Type::Url; }
bool is_value_list() const { return type() == Type::ValueList; }
bool is_builtin() const { return is_inherit() || is_initial() || is_unset(); }
AbstractImageStyleValue const& as_abstract_image() const;
AngleStyleValue const& as_angle() const;
BackgroundStyleValue const& as_background() const;
BackgroundRepeatStyleValue const& as_background_repeat() const;
BackgroundSizeStyleValue const& as_background_size() const;
BorderRadiusStyleValue const& as_border_radius() const;
BorderRadiusShorthandStyleValue const& as_border_radius_shorthand() const;
BorderStyleValue const& as_border() const;
CalculatedStyleValue const& as_calculated() const;
ColorStyleValue const& as_color() const;
ConicGradientStyleValue const& as_conic_gradient() const;
ContentStyleValue const& as_content() const;
DisplayStyleValue const& as_display() const;
EdgeStyleValue const& as_edge() const;
FilterValueListStyleValue const& as_filter_value_list() const;
FlexFlowStyleValue const& as_flex_flow() const;
FlexStyleValue const& as_flex() const;
FontStyleValue const& as_font() const;
FrequencyStyleValue const& as_frequency() const;
GridAreaShorthandStyleValue const& as_grid_area_shorthand() const;
GridTemplateAreaStyleValue const& as_grid_template_area() const;
GridTrackPlacementShorthandStyleValue const& as_grid_track_placement_shorthand() const;
GridTrackPlacementStyleValue const& as_grid_track_placement() const;
GridTrackSizeListShorthandStyleValue const& as_grid_track_size_list_shorthand() const;
GridTrackSizeListStyleValue const& as_grid_track_size_list() const;
IdentifierStyleValue const& as_identifier() const;
ImageStyleValue const& as_image() const;
InheritStyleValue const& as_inherit() const;
InitialStyleValue const& as_initial() const;
LengthStyleValue const& as_length() const;
LinearGradientStyleValue const& as_linear_gradient() const;
ListStyleStyleValue const& as_list_style() const;
NumericStyleValue const& as_numeric() const;
OverflowStyleValue const& as_overflow() const;
PercentageStyleValue const& as_percentage() const;
PositionStyleValue const& as_position() const;
RadialGradientStyleValue const& as_radial_gradient() const;
RectStyleValue const& as_rect() const;
ResolutionStyleValue const& as_resolution() const;
ShadowStyleValue const& as_shadow() const;
StringStyleValue const& as_string() const;
TextDecorationStyleValue const& as_text_decoration() const;
TimeStyleValue const& as_time() const;
TransformationStyleValue const& as_transformation() const;
UnresolvedStyleValue const& as_unresolved() const;
UnsetStyleValue const& as_unset() const;
URLStyleValue const& as_url() const;
StyleValueList const& as_value_list() const;
AbstractImageStyleValue& as_abstract_image() { return const_cast<AbstractImageStyleValue&>(const_cast<StyleValue const&>(*this).as_abstract_image()); }
AngleStyleValue& as_angle() { return const_cast<AngleStyleValue&>(const_cast<StyleValue const&>(*this).as_angle()); }
BackgroundStyleValue& as_background() { return const_cast<BackgroundStyleValue&>(const_cast<StyleValue const&>(*this).as_background()); }
BackgroundRepeatStyleValue& as_background_repeat() { return const_cast<BackgroundRepeatStyleValue&>(const_cast<StyleValue const&>(*this).as_background_repeat()); }
BackgroundSizeStyleValue& as_background_size() { return const_cast<BackgroundSizeStyleValue&>(const_cast<StyleValue const&>(*this).as_background_size()); }
BorderRadiusStyleValue& as_border_radius() { return const_cast<BorderRadiusStyleValue&>(const_cast<StyleValue const&>(*this).as_border_radius()); }
BorderRadiusShorthandStyleValue& as_border_radius_shorthand() { return const_cast<BorderRadiusShorthandStyleValue&>(const_cast<StyleValue const&>(*this).as_border_radius_shorthand()); }
BorderStyleValue& as_border() { return const_cast<BorderStyleValue&>(const_cast<StyleValue const&>(*this).as_border()); }
CalculatedStyleValue& as_calculated() { return const_cast<CalculatedStyleValue&>(const_cast<StyleValue const&>(*this).as_calculated()); }
ColorStyleValue& as_color() { return const_cast<ColorStyleValue&>(const_cast<StyleValue const&>(*this).as_color()); }
ConicGradientStyleValue& as_conic_gradient() { return const_cast<ConicGradientStyleValue&>(const_cast<StyleValue const&>(*this).as_conic_gradient()); }
ContentStyleValue& as_content() { return const_cast<ContentStyleValue&>(const_cast<StyleValue const&>(*this).as_content()); }
DisplayStyleValue& as_display() { return const_cast<DisplayStyleValue&>(const_cast<StyleValue const&>(*this).as_display()); }
EdgeStyleValue& as_edge() { return const_cast<EdgeStyleValue&>(const_cast<StyleValue const&>(*this).as_edge()); }
FilterValueListStyleValue& as_filter_value_list() { return const_cast<FilterValueListStyleValue&>(const_cast<StyleValue const&>(*this).as_filter_value_list()); }
FlexFlowStyleValue& as_flex_flow() { return const_cast<FlexFlowStyleValue&>(const_cast<StyleValue const&>(*this).as_flex_flow()); }
FlexStyleValue& as_flex() { return const_cast<FlexStyleValue&>(const_cast<StyleValue const&>(*this).as_flex()); }
FontStyleValue& as_font() { return const_cast<FontStyleValue&>(const_cast<StyleValue const&>(*this).as_font()); }
FrequencyStyleValue& as_frequency() { return const_cast<FrequencyStyleValue&>(const_cast<StyleValue const&>(*this).as_frequency()); }
GridAreaShorthandStyleValue& as_grid_area_shorthand() { return const_cast<GridAreaShorthandStyleValue&>(const_cast<StyleValue const&>(*this).as_grid_area_shorthand()); }
GridTemplateAreaStyleValue& as_grid_template_area() { return const_cast<GridTemplateAreaStyleValue&>(const_cast<StyleValue const&>(*this).as_grid_template_area()); }
GridTrackPlacementShorthandStyleValue& as_grid_track_placement_shorthand() { return const_cast<GridTrackPlacementShorthandStyleValue&>(const_cast<StyleValue const&>(*this).as_grid_track_placement_shorthand()); }
GridTrackPlacementStyleValue& as_grid_track_placement() { return const_cast<GridTrackPlacementStyleValue&>(const_cast<StyleValue const&>(*this).as_grid_track_placement()); }
GridTrackSizeListShorthandStyleValue& as_grid_track_size_list_shorthand() { return const_cast<GridTrackSizeListShorthandStyleValue&>(const_cast<StyleValue const&>(*this).as_grid_track_size_list_shorthand()); }
GridTrackSizeListStyleValue& as_grid_track_size_list() { return const_cast<GridTrackSizeListStyleValue&>(const_cast<StyleValue const&>(*this).as_grid_track_size_list()); }
IdentifierStyleValue& as_identifier() { return const_cast<IdentifierStyleValue&>(const_cast<StyleValue const&>(*this).as_identifier()); }
ImageStyleValue& as_image() { return const_cast<ImageStyleValue&>(const_cast<StyleValue const&>(*this).as_image()); }
InheritStyleValue& as_inherit() { return const_cast<InheritStyleValue&>(const_cast<StyleValue const&>(*this).as_inherit()); }
InitialStyleValue& as_initial() { return const_cast<InitialStyleValue&>(const_cast<StyleValue const&>(*this).as_initial()); }
LengthStyleValue& as_length() { return const_cast<LengthStyleValue&>(const_cast<StyleValue const&>(*this).as_length()); }
LinearGradientStyleValue& as_linear_gradient() { return const_cast<LinearGradientStyleValue&>(const_cast<StyleValue const&>(*this).as_linear_gradient()); }
ListStyleStyleValue& as_list_style() { return const_cast<ListStyleStyleValue&>(const_cast<StyleValue const&>(*this).as_list_style()); }
NumericStyleValue& as_numeric() { return const_cast<NumericStyleValue&>(const_cast<StyleValue const&>(*this).as_numeric()); }
OverflowStyleValue& as_overflow() { return const_cast<OverflowStyleValue&>(const_cast<StyleValue const&>(*this).as_overflow()); }
PercentageStyleValue& as_percentage() { return const_cast<PercentageStyleValue&>(const_cast<StyleValue const&>(*this).as_percentage()); }
PositionStyleValue& as_position() { return const_cast<PositionStyleValue&>(const_cast<StyleValue const&>(*this).as_position()); }
RadialGradientStyleValue& as_radial_gradient() { return const_cast<RadialGradientStyleValue&>(const_cast<StyleValue const&>(*this).as_radial_gradient()); }
RectStyleValue& as_rect() { return const_cast<RectStyleValue&>(const_cast<StyleValue const&>(*this).as_rect()); }
ResolutionStyleValue& as_resolution() { return const_cast<ResolutionStyleValue&>(const_cast<StyleValue const&>(*this).as_resolution()); }
ShadowStyleValue& as_shadow() { return const_cast<ShadowStyleValue&>(const_cast<StyleValue const&>(*this).as_shadow()); }
StringStyleValue& as_string() { return const_cast<StringStyleValue&>(const_cast<StyleValue const&>(*this).as_string()); }
TextDecorationStyleValue& as_text_decoration() { return const_cast<TextDecorationStyleValue&>(const_cast<StyleValue const&>(*this).as_text_decoration()); }
TimeStyleValue& as_time() { return const_cast<TimeStyleValue&>(const_cast<StyleValue const&>(*this).as_time()); }
TransformationStyleValue& as_transformation() { return const_cast<TransformationStyleValue&>(const_cast<StyleValue const&>(*this).as_transformation()); }
UnresolvedStyleValue& as_unresolved() { return const_cast<UnresolvedStyleValue&>(const_cast<StyleValue const&>(*this).as_unresolved()); }
UnsetStyleValue& as_unset() { return const_cast<UnsetStyleValue&>(const_cast<StyleValue const&>(*this).as_unset()); }
URLStyleValue& as_url() { return const_cast<URLStyleValue&>(const_cast<StyleValue const&>(*this).as_url()); }
StyleValueList& as_value_list() { return const_cast<StyleValueList&>(const_cast<StyleValue const&>(*this).as_value_list()); }
bool has_auto() const;
virtual bool has_color() const { return false; }
virtual bool has_length() const { return false; }
virtual bool has_rect() const { return false; }
virtual bool has_number() const { return false; }
virtual bool has_integer() const { return false; }
virtual ErrorOr<ValueComparingNonnullRefPtr<StyleValue const>> absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const;
virtual Color to_color(Optional<Layout::NodeWithStyle const&>) const { return {}; }
ValueID to_identifier() const;
virtual Length to_length() const { VERIFY_NOT_REACHED(); }
virtual float to_number() const { return 0; }
virtual float to_integer() const { return 0; }
virtual ErrorOr<String> to_string() const = 0;
virtual bool equals(StyleValue const& other) const = 0;
bool operator==(StyleValue const& other) const
{
return this->equals(other);
}
protected:
explicit StyleValue(Type);
private:
Type m_type { Type::Invalid };
};
template<typename T>
struct StyleValueWithDefaultOperators : public StyleValue {
using StyleValue::StyleValue;
virtual bool equals(StyleValue const& other) const override
{
if (type() != other.type())
return false;
auto const& typed_other = static_cast<T const&>(other);
return static_cast<T const&>(*this).properties_equal(typed_other);
}
};
}
template<>
struct AK::Formatter<Web::CSS::StyleValue> : Formatter<StringView> {
ErrorOr<void> format(FormatBuilder& builder, Web::CSS::StyleValue const& style_value)
{
return Formatter<StringView>::format(builder, TRY(style_value.to_string()));
}
};
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