add rel setter to HTMLLinkElement

Author: nikneym

src/browser/html/elements.zig

@@ -758,16 +758,20 @@ pub const HTMLLinkElement = struct {
     pub const subtype = .node;
 
     pub fn get_rel(self: *parser.Link) ![]const u8 {
-        return try parser.linkGetRel(self);
+        return parser.linkGetRel(self);
+    }
+
+    pub fn set_rel(self: *parser.Link, rel: []const u8) !void {
+        return parser.linkSetRel(self, rel);
     }
 
     pub fn get_href(self: *parser.Link) ![]const u8 {
-        return try parser.linkGetHref(self);
+        return parser.linkGetHref(self);
     }
 
     pub fn set_href(self: *parser.Link, href: []const u8, page: *const Page) !void {
         const full = try urlStitch(page.call_arena, href, page.url.raw, .{});
-        return try parser.linkSetHref(self, full);
+        return parser.linkSetHref(self, full);
     }
 };
 

src/browser/netsurf.zig

@@ -1942,6 +1942,11 @@ pub fn linkGetRel(link: *Link) ![]const u8 {
     return strToData(res.?);
 }
 
+pub fn linkSetRel(link: *Link, rel: []const u8) !void {
+    const err = c.dom_html_link_element_set_rel(link, try strFromData(rel));
+    return DOMErr(err);
+}
+
 pub fn linkGetHref(link: *Link) ![]const u8 {
     var res: ?*String = null;
     const err = c.dom_html_link_element_get_href(link, &res);