dom: add HTMLCollection

src/dom/html_collection.zig

@@ -0,0 +1,28 @@
+const std = @import("std");
+
+const parser = @import("../netsurf.zig");
+
+const jsruntime = @import("jsruntime");
+
+const Element = @import("element.zig").Element;
+
+// WEB IDL https://dom.spec.whatwg.org/#htmlcollection
+pub const HTMLCollection = struct {
+    pub const Self = parser.HTMLCollection;
+    pub const mem_guarantied = true;
+
+    // JS funcs
+    // --------
+
+    pub fn _get_length(self: *parser.HTMLCollection) u32 {
+        return parser.HTMLCollectionLength(self);
+    }
+
+    pub fn _item(self: *parser.HTMLCollection, index: u32) ?*parser.Element {
+        return parser.HTMLCollectionItem(self, index);
+    }
+
+    pub fn _namedItem(self: *parser.HTMLCollection, name: []const u8) ?*parser.Element {
+        return parser.HTMLCollectionNamedItem(self, name);
+    }
+};

src/dom/node.zig

@@ -14,6 +14,7 @@ const EventTarget = @import("event_target.zig").EventTarget;
 const CData = @import("character_data.zig");
 const Element = @import("element.zig").Element;
 const Document = @import("document.zig").Document;
+const HTMLCollection = @import("html_collection.zig").HTMLCollection;
 
 // HTML
 const HTML = @import("../html/html.zig");
@@ -25,6 +26,7 @@ pub const Interfaces = generate.Tuple(.{
     CData.Interfaces,
     Element,
     Document,
+    HTMLCollection,
 
     HTML.Interfaces,
 });

src/netsurf.zig

@@ -618,6 +618,40 @@ pub fn elementGetAttribute(elem: *Element, name: []const u8) ?[]const u8 {
     return stringToData(s.?);
 }
 
+// HTMLCollection
+
+pub const HTMLCollection = c.dom_html_collection;
+
+pub fn HTMLCollectionLength(collection: *HTMLCollection) u32 {
+    var ln: u32 = undefined;
+    _ = c.dom_html_collection_get_length(collection, &ln);
+    return ln;
+}
+
+pub fn HTMLCollectionItem(collection: *HTMLCollection, index: u32) ?*Element {
+    var n: [*c]c.dom_node = undefined;
+    _ = c.dom_html_collection_item(collection, index, &n);
+
+    if (n == null) {
+        return null;
+    }
+
+    // cast [*c]c.dom_node into *Element
+    return @as(*Element, @ptrCast(n));
+}
+
+pub fn HTMLCollectionNamedItem(collection: *HTMLCollection, name: []const u8) ?*Element {
+    var n: [*c]c.dom_node = undefined;
+    _ = c.dom_html_collection_named_item(collection, stringFromData(name), &n);
+
+    if (n == null) {
+        return null;
+    }
+
+    // cast [*c]c.dom_node into *Element
+    return @as(*Element, @ptrCast(n));
+}
+
 // ElementHTML
 pub const ElementHTML = c.dom_html_element;