From 7d742d62b893090125d5a677cda670a41be38186 Mon Sep 17 00:00:00 2001
From: sjorsdonkers <72333389+sjorsdonkers@users.noreply.github.com>
Date: Thu, 24 Apr 2025 14:35:05 +0200
Subject: [PATCH 1/2] SVGElement dummy

---
 src/browser/dom/element.zig       |  1 +
 src/browser/html/html.zig         |  2 ++
 src/browser/html/svg_elements.zig | 31 +++++++++++++++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 src/browser/html/svg_elements.zig

diff --git a/src/browser/dom/element.zig b/src/browser/dom/element.zig
index 58016167..3aeac4bd 100644
--- a/src/browser/dom/element.zig
+++ b/src/browser/dom/element.zig
@@ -48,6 +48,7 @@ pub const Element = struct {
 
     pub fn toInterface(e: *parser.Element) !Union {
         return try HTMLElem.toInterface(Union, e);
+        // SVGElement and MathML are not supported yet.
     }
 
     // JS funcs
diff --git a/src/browser/html/html.zig b/src/browser/html/html.zig
index 513e3fe5..6e576228 100644
--- a/src/browser/html/html.zig
+++ b/src/browser/html/html.zig
@@ -18,6 +18,7 @@
 
 const HTMLDocument = @import("document.zig").HTMLDocument;
 const HTMLElem = @import("elements.zig");
+const SVGElem = @import("svg_elements.zig");
 const Window = @import("window.zig").Window;
 const Navigator = @import("navigator.zig").Navigator;
 const History = @import("history.zig").History;
@@ -28,6 +29,7 @@ pub const Interfaces = .{
     HTMLElem.HTMLElement,
     HTMLElem.HTMLMediaElement,
     HTMLElem.Interfaces,
+    SVGElem.SVGElement,
     Window,
     Navigator,
     History,
diff --git a/src/browser/html/svg_elements.zig b/src/browser/html/svg_elements.zig
new file mode 100644
index 00000000..c3342164
--- /dev/null
+++ b/src/browser/html/svg_elements.zig
@@ -0,0 +1,31 @@
+// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const Element = @import("../dom/element.zig").Element;
+
+// Support for SVGElements is very limited, this is a dummy implementation.
+// This is here no to be able to support `element instanceof SVGElement;` in JavaScript.
+// https://developer.mozilla.org/en-US/docs/Web/API/SVGElement
+pub const SVGElement = struct {
+    // Currently the prototype chain is not implemented (will not be returned by toInterface())
+    // For that we need parser.SvgElement and the derived types with tags in the v-table.
+    pub const prototype = *Element;
+    // While this is a Node, could consider not exposing the subtype untill we have
+    // a Self type to cast to.
+    pub const subtype = .node;
+};

From 7d9f6eef27c074ec96c402cb53a3292e58e8a2dd Mon Sep 17 00:00:00 2001
From: sjorsdonkers <72333389+sjorsdonkers@users.noreply.github.com>
Date: Thu, 24 Apr 2025 14:56:16 +0200
Subject: [PATCH 2/2] instanceof svgelement test

---
 src/browser/html/svg_elements.zig | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/browser/html/svg_elements.zig b/src/browser/html/svg_elements.zig
index c3342164..867256d0 100644
--- a/src/browser/html/svg_elements.zig
+++ b/src/browser/html/svg_elements.zig
@@ -29,3 +29,13 @@ pub const SVGElement = struct {
     // a Self type to cast to.
     pub const subtype = .node;
 };
+
+const testing = @import("../../testing.zig");
+test "Browser.HTML.SVGElement" {
+    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
+    defer runner.deinit();
+
+    try runner.testCases(&.{
+        .{ "'AString' instanceof SVGElement", "false" },
+    }, .{});
+}