From 46a213ae49c079ce232544512e22c2ec12fb4024 Mon Sep 17 00:00:00 2001
From: Witold Filipczyk <witekfl@poczta.onet.pl>
Date: Wed, 8 May 2024 18:32:59 +0200
Subject: [PATCH] [spidermonkey] element.outerHTML

---
 src/ecmascript/spidermonkey/element.cpp       | 129 +++++++++++++++++-
 test/ecmascript/assert/element.outerHTML.html |   3 +-
 2 files changed, 130 insertions(+), 2 deletions(-)

diff --git a/src/ecmascript/spidermonkey/element.cpp b/src/ecmascript/spidermonkey/element.cpp
index 008b4166e..136fe7cf2 100644
--- a/src/ecmascript/spidermonkey/element.cpp
+++ b/src/ecmascript/spidermonkey/element.cpp
@@ -3380,11 +3380,138 @@ element_set_property_outerHtml(JSContext *ctx, unsigned int argc, JS::Value *vp)
 #endif
 		return false;
 	}
-// TODO
+	args.rval().setUndefined();
+
 	struct view_state *vs = interpreter->vs;
 	if (!vs) {
 		return true;
 	}
+	dom_node *el = (dom_node *)JS::GetMaybePtrFromReservedSlot<dom_node>(hobj, 0);
+
+	if (!el) {
+		return true;
+	}
+	dom_node *parent = NULL;
+	dom_exception exc = dom_node_get_parent_node(el, &parent);
+
+	if (exc != DOM_NO_ERR) {
+		return true;
+	}
+
+	char *s = jsval_to_string(ctx, args[0]);
+
+	if (!s) {
+		return false;
+	}
+	size_t size = strlen(s);
+	struct dom_node *cref = NULL;
+
+	dom_hubbub_parser_params parse_params;
+	dom_hubbub_error error;
+	dom_hubbub_parser *parser = NULL;
+	struct dom_document *doc = NULL;
+	struct dom_document_fragment *fragment = NULL;
+	struct dom_node *child = NULL, *html = NULL, *body = NULL;
+	struct dom_nodelist *bodies = NULL;
+
+	exc = dom_node_get_owner_document(el, &doc);
+	if (exc != DOM_NO_ERR) goto out;
+
+	parse_params.enc = "UTF-8";
+	parse_params.fix_enc = true;
+	parse_params.enable_script = false;
+	parse_params.msg = NULL;
+	parse_params.script = NULL;
+	parse_params.ctx = NULL;
+	parse_params.daf = NULL;
+
+	error = dom_hubbub_fragment_parser_create(&parse_params,
+						  doc,
+						  &parser,
+						  &fragment);
+	if (error != DOM_HUBBUB_OK) {
+		fprintf(stderr, "Unable to create fragment parser!");
+		goto out;
+	}
+
+	error = dom_hubbub_parser_parse_chunk(parser, (const uint8_t*)s, size);
+	if (error != DOM_HUBBUB_OK) {
+		fprintf(stderr, "Unable to parse HTML chunk");
+		goto out;
+	}
+	error = dom_hubbub_parser_completed(parser);
+	if (error != DOM_HUBBUB_OK) {
+		fprintf(stderr, "Unable to complete parser");
+		goto out;
+	}
+
+	/* The first child in the fragment will be an HTML element
+	 * because that's how hubbub works, walk through that to the body
+	 * element hubbub will have created, we want to migrate that element's
+	 * children into ourself.
+	 */
+	exc = dom_node_get_first_child(fragment, &html);
+	if (exc != DOM_NO_ERR) goto out;
+
+	/* We can then ask that HTML element to give us its body */
+	exc = dom_element_get_elements_by_tag_name(html, corestring_dom_BODY, &bodies);
+	if (exc != DOM_NO_ERR) goto out;
+
+	/* And now we can get the body which will be the zeroth body */
+	exc = dom_nodelist_item(bodies, 0, &body);
+	if (exc != DOM_NO_ERR) goto out;
+
+	/* Migrate the children */
+	exc = dom_node_get_first_child(body, &child);
+	if (exc != DOM_NO_ERR) goto out;
+	while (child != NULL) {
+		exc = dom_node_remove_child(body, child, &cref);
+		if (exc != DOM_NO_ERR) goto out;
+		dom_node_unref(cref);
+
+		dom_node *spare = NULL;
+		exc = dom_node_insert_before(parent, child, el, &spare);
+
+		if (exc != DOM_NO_ERR) goto out;
+		dom_node_unref(spare);
+		dom_node_unref(cref);
+		dom_node_unref(child);
+		child = NULL;
+		exc = dom_node_get_first_child(body, &child);
+		if (exc != DOM_NO_ERR) goto out;
+	}
+	exc = dom_node_remove_child(parent, el, &cref);
+
+	if (exc != DOM_NO_ERR) goto out;
+out:
+	if (parser != NULL) {
+		dom_hubbub_parser_destroy(parser);
+	}
+	if (doc != NULL) {
+		dom_node_unref(doc);
+	}
+	if (fragment != NULL) {
+		dom_node_unref(fragment);
+	}
+	if (child != NULL) {
+		dom_node_unref(child);
+	}
+	if (html != NULL) {
+		dom_node_unref(html);
+	}
+	if (bodies != NULL) {
+		dom_nodelist_unref(bodies);
+	}
+	if (body != NULL) {
+		dom_node_unref(body);
+	}
+	if (cref != NULL) {
+		dom_node_unref(cref);
+	}
+	dom_node_unref(parent);
+
+	mem_free(s);
+	interpreter->changed = 1;
 
 	return true;
 }
diff --git a/test/ecmascript/assert/element.outerHTML.html b/test/ecmascript/assert/element.outerHTML.html
index 20acb00b9..61bf594ea 100644
--- a/test/ecmascript/assert/element.outerHTML.html
+++ b/test/ecmascript/assert/element.outerHTML.html
@@ -18,8 +18,9 @@ function bb()
 	const container = document.getElementById("container");
 	const d = document.getElementById("d");
 	console.assert(container.firstElementChild.nodeName === 'DIV', 'DIV');
-	d.outerHTML = "<p>This paragraph replaced the original div.</p>";
+	d.outerHTML = '<p>' + d.outerHTML + '</p>';
 	console.assert(container.firstElementChild.nodeName === 'P', 'P');
+	console.assert(container.innerHTML === '\n  <p></p><div id="d">This is a div.</div><p></p>\n', 'div p div');
 }
 
 console.error('element.outerHTML.html');