#include <LibHTML/CSS/StyleProperties.h> void StyleProperties::set_property(const String& name, NonnullRefPtr<StyleValue> value) { m_property_values.set(name, move(value)); } Optional<NonnullRefPtr<StyleValue>> StyleProperties::property(const String& name) const { auto it = m_property_values.find(name); if (it == m_property_values.end()) return {}; return it->value; } Length StyleProperties::length_or_fallback(const StringView& property_name, const Length& fallback) const { auto value = property(property_name); if (!value.has_value()) return fallback; return value.value()->to_length(); } String StyleProperties::string_or_fallback(const StringView& property_name, const StringView& fallback) const { auto value = property(property_name); if (!value.has_value()) return fallback; return value.value()->to_string(); } Color StyleProperties::color_or_fallback(const StringView& property_name, Color fallback) const { auto value = property(property_name); if (!value.has_value()) return fallback; if (value.value()->type() != StyleValue::Type::Color) return fallback; return static_cast<ColorStyleValue&>(*value.value()).color(); }