From 7f18c51f4c25e9fe73aba13d304a8ad118478881 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Thu, 28 May 2020 00:26:33 +0200
Subject: LibWeb: Flesh out "reset the insertion mode appropriately" algorithm

---
 Libraries/LibWeb/Parser/HTMLDocumentParser.cpp | 64 +++++++++++++++++++++++++-
 1 file changed, 63 insertions(+), 1 deletion(-)

(limited to 'Libraries/LibWeb')

diff --git a/Libraries/LibWeb/Parser/HTMLDocumentParser.cpp b/Libraries/LibWeb/Parser/HTMLDocumentParser.cpp
index ffa427cc7b..01b221b58f 100644
--- a/Libraries/LibWeb/Parser/HTMLDocumentParser.cpp
+++ b/Libraries/LibWeb/Parser/HTMLDocumentParser.cpp
@@ -902,7 +902,69 @@ void HTMLDocumentParser::handle_in_table(HTMLToken& token)
 
 void HTMLDocumentParser::reset_the_insertion_mode_appropriately()
 {
-    TODO();
+    for (ssize_t i = m_stack_of_open_elements.elements().size() - 1; i >= 0; --i) {
+        RefPtr<Element> node = m_stack_of_open_elements.elements().at(i);
+
+        if (node->tag_name() == "select") {
+            TODO();
+        }
+
+        if (node->tag_name().is_one_of("td", "th")) {
+            m_insertion_mode = InsertionMode::InCell;
+            return;
+        }
+
+        if (node->tag_name() == "tr") {
+            m_insertion_mode = InsertionMode::InRow;
+            return;
+        }
+
+        if (node->tag_name().is_one_of("tbody", "thead", "tfoot")) {
+            m_insertion_mode = InsertionMode::InTableBody;
+            return;
+        }
+
+        if (node->tag_name() == "caption") {
+            m_insertion_mode = InsertionMode::InCaption;
+            return;
+        }
+
+        if (node->tag_name() == "colgroup") {
+            m_insertion_mode = InsertionMode::InColumnGroup;
+            return;
+        }
+
+        if (node->tag_name() == "table") {
+            m_insertion_mode = InsertionMode::InTable;
+            return;
+        }
+
+        if (node->tag_name() == "template") {
+            TODO();
+        }
+
+        if (node->tag_name() == "body") {
+            m_insertion_mode = InsertionMode::InBody;
+            return;
+        }
+
+        if (node->tag_name() == "frameset") {
+            m_insertion_mode = InsertionMode::InFrameset;
+            if (m_parsing_fragment) {
+                TODO();
+            }
+            return;
+        }
+
+        if (node->tag_name() == "html") {
+            TODO();
+        }
+    }
+
+    m_insertion_mode = InsertionMode::InBody;
+    if (m_parsing_fragment) {
+        TODO();
+    }
 }
 
 const char* HTMLDocumentParser::insertion_mode_name() const
-- 
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