LibWeb: Parse "input" tags during the "in body" insertion mode

Libraries/LibWeb/DOM/AttributeNames.cpp

@@ -32,6 +32,7 @@ namespace AttributeNames {
 
 FlyString id;
 FlyString class_;
+FlyString type;
 
 void initialize()
 {
@@ -40,6 +41,7 @@ void initialize()
         return;
     id = "id";
     class_ = "class";
+    type = "type";
     s_initialized = true;
 }
 

Libraries/LibWeb/DOM/AttributeNames.h

@@ -36,6 +36,7 @@ void initialize();
 
 extern FlyString id;
 extern FlyString class_;
+extern FlyString type;
 
 }
 }

Libraries/LibWeb/Parser/HTMLDocumentParser.cpp

@@ -751,6 +751,18 @@ void HTMLDocumentParser::handle_in_body(HTMLToken& token)
         return;
     }
 
+    if (token.is_start_tag() && token.tag_name() == "input") {
+        reconstruct_the_active_formatting_elements();
+        insert_html_element(token);
+        m_stack_of_open_elements.pop();
+        token.acknowledge_self_closing_flag_if_set();
+        auto type_attribute = token.attribute(HTML::AttributeNames::type);
+        if (type_attribute.is_null() || type_attribute != "hidden") {
+            m_frameset_ok = false;
+        }
+        return;
+    }
+
     if (token.is_start_tag()) {
         reconstruct_the_active_formatting_elements();
         insert_html_element(token);

Libraries/LibWeb/Parser/HTMLToken.h

@@ -26,6 +26,7 @@
 
 #pragma once
 
+#include <AK/FlyString.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <AK/Types.h>
@@ -104,6 +105,16 @@ public:
             m_tag.self_closing_acknowledged = true;
     }
 
+    StringView attribute(const FlyString& attribute_name)
+    {
+        ASSERT(is_start_tag() || is_end_tag());
+        for (auto& attribute : m_tag.attributes) {
+            if (attribute_name == attribute.name_builder.string_view())
+                return attribute.value_builder.string_view();
+        }
+        return {};
+    }
+
     Type type() const { return m_type; }
 
     String to_string() const;