From 95c0ff6f3909deef02aa28073ea930a8403d1467 Mon Sep 17 00:00:00 2001
From: Pierre Tachoire <pierre@lightpanda.io>
Date: Tue, 24 Sep 2024 09:18:08 +0200
Subject: [PATCH] dom: implement currentScript

---
 src/browser/browser.zig |  4 ++++
 src/html/document.zig   |  4 ++--
 src/netsurf/netsurf.zig | 15 +++++++++++++++
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/browser/browser.zig b/src/browser/browser.zig
index cc545ff1..100b4498 100644
--- a/src/browser/browser.zig
+++ b/src/browser/browser.zig
@@ -411,7 +411,9 @@ pub const Page = struct {
             // > immediately before the browser continues to parse the
             // > page.
             // https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script#notes
+            try parser.documentHTMLSetCurrentScript(html_doc, @ptrCast(e));
             self.evalScript(e) catch |err| log.warn("evaljs: {any}", .{err});
+            try parser.documentHTMLSetCurrentScript(html_doc, null);
         }
 
         // TODO wait for deferred scripts
@@ -428,7 +430,9 @@ pub const Page = struct {
 
         // eval async scripts.
         for (sasync.items) |e| {
+            try parser.documentHTMLSetCurrentScript(html_doc, @ptrCast(e));
             self.evalScript(e) catch |err| log.warn("evaljs: {any}", .{err});
+            try parser.documentHTMLSetCurrentScript(html_doc, null);
         }
 
         // TODO wait for async scripts
diff --git a/src/html/document.zig b/src/html/document.zig
index 3b53e11e..78ffa864 100644
--- a/src/html/document.zig
+++ b/src/html/document.zig
@@ -153,8 +153,8 @@ pub const HTMLDocument = struct {
         return try collection.HTMLCollectionAll(parser.documentHTMLToNode(self), true);
     }
 
-    pub fn get_currentScript(_: *parser.DocumentHTML) !?*parser.Element {
-        return null;
+    pub fn get_currentScript(self: *parser.DocumentHTML) !?*parser.Script {
+        return try parser.documentHTMLGetCurrentScript(self);
     }
 
     pub fn get_designMode(_: *parser.DocumentHTML) []const u8 {
diff --git a/src/netsurf/netsurf.zig b/src/netsurf/netsurf.zig
index eecf31ea..322bb4b3 100644
--- a/src/netsurf/netsurf.zig
+++ b/src/netsurf/netsurf.zig
@@ -2249,3 +2249,18 @@ pub inline fn documentHTMLSetTitle(doc: *DocumentHTML, v: []const u8) !void {
     const err = documentHTMLVtable(doc).set_title.?(doc, try strFromData(v));
     try DOMErr(err);
 }
+
+pub fn documentHTMLSetCurrentScript(doc: *DocumentHTML, script: ?*Script) !void {
+    var s: ?*ElementHTML = null;
+    if (script != null) s = @ptrCast(script.?);
+    const err = documentHTMLVtable(doc).set_current_script.?(doc, s);
+    try DOMErr(err);
+}
+
+pub fn documentHTMLGetCurrentScript(doc: *DocumentHTML) !?*Script {
+    var elem: ?*ElementHTML = undefined;
+    const err = documentHTMLVtable(doc).get_current_script.?(doc, &elem);
+    try DOMErr(err);
+    if (elem == null) return null;
+    return @ptrCast(elem.?);
+}