dom: fix document constructor

src/dom/document.zig

@@ -40,14 +40,30 @@ const DocumentType = @import("document_type.zig").DocumentType;
 const DocumentFragment = @import("document_fragment.zig").DocumentFragment;
 const DOMImplementation = @import("implementation.zig").DOMImplementation;
 
+const UserContext = @import("../user_context.zig").UserContext;
+
 // WEB IDL https://dom.spec.whatwg.org/#document
 pub const Document = struct {
     pub const Self = parser.Document;
     pub const prototype = *Node;
     pub const mem_guarantied = true;
 
-    pub fn constructor() !*parser.Document {
-        return try parser.domImplementationCreateHTMLDocument(null);
+    pub fn constructor(userctx: UserContext) !*parser.DocumentHTML {
+        var title: ?[]const u8 = null;
+        if (userctx.document) |cur| {
+            title = try parser.documentHTMLGetTitle(cur);
+        }
+        const doc = try parser.domImplementationCreateHTMLDocument(title);
+
+        if (userctx.document) |cur| {
+            // we have to work w/ document instead of html document.
+            const ddoc = parser.documentHTMLToDocument(doc);
+            const ccur = parser.documentHTMLToDocument(cur);
+            try parser.documentSetDocumentURI(ddoc, try parser.documentGetDocumentURI(ccur));
+            try parser.documentSetInputEncoding(ddoc, try parser.documentGetInputEncoding(ccur));
+        }
+
+        return doc;
     }
 
     // JS funcs
@@ -262,6 +278,13 @@ pub fn testExecFn(
         .{ .src = "newdoc.children.length", .ex = "0" },
         .{ .src = "newdoc.getElementsByTagName('*').length", .ex = "0" },
         .{ .src = "newdoc.getElementsByTagName('*').item(0)", .ex = "null" },
+        .{ .src = "newdoc.inputEncoding === document.inputEncoding", .ex = "true" },
+        .{ .src = "newdoc.documentURI === document.documentURI", .ex = "true" },
+        .{ .src = "newdoc.URL === document.URL", .ex = "true" },
+        .{ .src = "newdoc.compatMode === document.compatMode", .ex = "true" },
+        .{ .src = "newdoc.characterSet === document.characterSet", .ex = "true" },
+        .{ .src = "newdoc.charset === document.charset", .ex = "true" },
+        .{ .src = "newdoc.contentType === document.contentType", .ex = "true" },
     };
     try checkCases(js_env, &constructor);
 

src/dom/implementation.zig

@@ -75,7 +75,7 @@ pub const DOMImplementation = struct {
         return try parser.domImplementationCreateDocument(cnamespace, cqname, doctype);
     }
 
-    pub fn _createHTMLDocument(_: *DOMImplementation, title: ?[]const u8) !*parser.Document {
+    pub fn _createHTMLDocument(_: *DOMImplementation, title: ?[]const u8) !*parser.DocumentHTML {
         return try parser.domImplementationCreateHTMLDocument(title);
     }
 
@@ -95,7 +95,7 @@ pub fn testExecFn(
 ) anyerror!void {
     var getImplementation = [_]Case{
         .{ .src = "let impl = document.implementation", .ex = "undefined" },
-        .{ .src = "impl.createHTMLDocument();", .ex = "[object Document]" },
+        .{ .src = "impl.createHTMLDocument();", .ex = "[object HTMLDocument]" },
         .{ .src = "impl.createDocument(null, 'foo');", .ex = "[object Document]" },
         .{ .src = "impl.createDocumentType('foo', 'bar', 'baz')", .ex = "[object DocumentType]" },
         .{ .src = "impl.hasFeature()", .ex = "true" },

src/netsurf.zig

@@ -1763,7 +1763,7 @@ pub inline fn domImplementationCreateDocumentType(
     return dt.?;
 }
 
-pub inline fn domImplementationCreateHTMLDocument(title: ?[]const u8) !*Document {
+pub inline fn domImplementationCreateHTMLDocument(title: ?[]const u8) !*DocumentHTML {
     var doc: ?*Document = undefined;
     const err = c.dom_implementation_create_document(
         c.DOM_IMPLEMENTATION_HTML,
@@ -1775,9 +1775,12 @@ pub inline fn domImplementationCreateHTMLDocument(title: ?[]const u8) !*Document
         &doc,
     );
     try DOMErr(err);
-    // TODO set title
-    _ = title;
-    return doc.?;
+
+    const doc_html = @as(*DocumentHTML, @ptrCast(doc.?));
+
+    if (title) |t| try documentHTMLSetTitle(doc_html, t);
+
+    return doc_html;
 }
 
 // Document
@@ -1833,6 +1836,11 @@ pub inline fn documentGetInputEncoding(doc: *Document) ![]const u8 {
     return strToData(s.?);
 }
 
+pub inline fn documentSetInputEncoding(doc: *Document, enc: []const u8) !void {
+    const err = documentVtable(doc).dom_document_set_input_encoding.?(doc, try strFromData(enc));
+    try DOMErr(err);
+}
+
 pub inline fn documentCreateElement(doc: *Document, tag_name: []const u8) !*Element {
     var elem: ?*Element = undefined;
     const err = documentVtable(doc).dom_document_create_element.?(doc, try strFromData(tag_name), &elem);