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LibWeb: Make CSSStyleDeclaration an abstract class

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This patch moves the CSS property+value storage down to a new subclass
of CSSStyleDeclaration called PropertyOwningCSSStyleDeclaration.

The JavaScript wrapper for CSSStyleDeclaration now calls virtual
functions on the C++ object.

This is preparation for supporting computed style CSSStyleDeclaration
objects which won't have internal property storage, but rather an
internal element pointer. :^)
This commit is contained in:
Andreas Kling 2021-09-12 19:24:01 +02:00
parent 10679b6df2
commit 0bcab60463
9 changed files with 106 additions and 69 deletions
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6
Userland/Libraries/LibWeb/CSS/StyleResolver.cpp
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@ -514,7 +514,7 @@ StyleResolver::CustomPropertyResolutionTuple StyleResolver::resolve_custom_prope
if (match.specificity < parent_resolved.specificity)
continue;
auto custom_property_style = match.rule->declaration().custom_property(custom_property_name);
auto custom_property_style = verify_cast<PropertyOwningCSSStyleDeclaration>(match.rule->declaration()).custom_property(custom_property_name);
if (custom_property_style.has_value()) {
element.add_custom_property(custom_property_name, { custom_property_style.value(), match.specificity });
return { custom_property_style.value(), match.specificity };
@ -548,7 +548,7 @@ NonnullRefPtr<StyleProperties> StyleResolver::resolve_style(DOM::Element& elemen
sort_matching_rules(matching_rules);
for (auto& match : matching_rules) {
for (auto& property : match.rule->declaration().properties()) {
for (auto& property : verify_cast<PropertyOwningCSSStyleDeclaration>(match.rule->declaration()).properties()) {
auto property_value = property.value;
if (property.value->is_custom_property()) {
auto prop = reinterpret_cast<CSS::CustomStyleValue const*>(property.value.ptr());
@ -562,7 +562,7 @@ NonnullRefPtr<StyleProperties> StyleResolver::resolve_style(DOM::Element& elemen
}
}
if (auto* inline_style = element.inline_style()) {
if (auto* inline_style = verify_cast<ElementInlineCSSStyleDeclaration>(element.inline_style())) {
for (auto& property : inline_style->properties()) {
set_property_expanding_shorthands(style, property.property_id, property.value, m_document);
}