LibWeb: Move textarea cols rows attr size from css to create_layout_node

Author: https://github.com/bplaat
Commit: https://github.com/SerenityOS/serenity/commit/110e74b9c1
Pull-request: https://github.com/SerenityOS/serenity/pull/23506
Issue: https://github.com/SerenityOS/serenity/issues/23215
Reviewed-by: https://github.com/AtkinsSJ ✅

Userland/Libraries/LibWeb/CSS/Default.css

@@ -38,8 +38,6 @@ textarea {
     display: inline-block;
     overflow: auto;
     font-family: monospace;
-    width: attr(cols ch, 20ch);
-    height: attr(rows lh, 2lh);
 }
 
 input::placeholder, textarea::placeholder {

Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp

@@ -9,6 +9,7 @@
 #include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/CSS/StyleProperties.h>
 #include <LibWeb/CSS/StyleValues/DisplayStyleValue.h>
+#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/ElementFactory.h>
 #include <LibWeb/DOM/Event.h>
@@ -37,6 +38,11 @@ JS::GCPtr<Layout::Node> HTMLTextAreaElement::create_layout_node(NonnullRefPtr<CS
     if (style->display().is_inline_outside() && style->display().is_flow_inside())
         style->set_property(CSS::PropertyID::Display, CSS::DisplayStyleValue::create(CSS::Display::from_short(CSS::Display::Short::InlineBlock)));
 
+    if (style->property(CSS::PropertyID::Width)->has_auto())
+        style->set_property(CSS::PropertyID::Width, CSS::LengthStyleValue::create(CSS::Length(cols(), CSS::Length::Type::Ch)));
+    if (style->property(CSS::PropertyID::Height)->has_auto())
+        style->set_property(CSS::PropertyID::Height, CSS::LengthStyleValue::create(CSS::Length(rows(), CSS::Length::Type::Lh)));
+
     return Element::create_layout_node_for_display_type(document(), style->display(), style, this);
 }