Merge pull request #132 from lightpanda-io/dom-parentnode-prepend

Dom parentnode prepend/append/replaceChildren

src/dom/document.zig

@@ -5,6 +5,7 @@ const parser = @import("../netsurf.zig");
 const jsruntime = @import("jsruntime");
 const Case = jsruntime.test_utils.Case;
 const checkCases = jsruntime.test_utils.checkCases;
+const Variadic = jsruntime.Variadic;
 
 const Node = @import("node.zig").Node;
 const NodeList = @import("nodelist.zig").NodeList;
@@ -228,6 +229,27 @@ pub const Document = struct {
         return list;
     }
 
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn _prepend(self: *parser.Document, nodes: ?Variadic(*parser.Node)) !void {
+        return Node.prepend(parser.documentToNode(self), nodes);
+    }
+
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn _append(self: *parser.Document, nodes: ?Variadic(*parser.Node)) !void {
+        return Node.append(parser.documentToNode(self), nodes);
+    }
+
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn _replaceChildren(self: *parser.Document, nodes: ?Variadic(*parser.Node)) !void {
+        return Node.replaceChildren(parser.documentToNode(self), nodes);
+    }
+
     pub fn deinit(_: *parser.Document, _: std.mem.Allocator) void {}
 };
 
@@ -381,6 +403,12 @@ pub fn testExecFn(
         .{ .src = "nd.firstElementChild", .ex = "null" },
         .{ .src = "nd.lastElementChild", .ex = "null" },
         .{ .src = "nd.childElementCount", .ex = "0" },
+
+        .{ .src = "let emptydoc = document.createElement('html')", .ex = "undefined" },
+        .{ .src = "emptydoc.prepend(document.createElement('html'))", .ex = "undefined" },
+
+        .{ .src = "let emptydoc2 = document.createElement('html')", .ex = "undefined" },
+        .{ .src = "emptydoc2.append(document.createElement('html'))", .ex = "undefined" },
     };
     try checkCases(js_env, &parentNode);
 

src/dom/element.zig

@@ -5,6 +5,7 @@ const parser = @import("../netsurf.zig");
 const jsruntime = @import("jsruntime");
 const Case = jsruntime.test_utils.Case;
 const checkCases = jsruntime.test_utils.checkCases;
+const Variadic = jsruntime.Variadic;
 
 const collection = @import("html_collection.zig");
 
@@ -281,6 +282,27 @@ pub const Element = struct {
         return list;
     }
 
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn _prepend(self: *parser.Element, nodes: ?Variadic(*parser.Node)) !void {
+        return Node.prepend(parser.elementToNode(self), nodes);
+    }
+
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn _append(self: *parser.Element, nodes: ?Variadic(*parser.Node)) !void {
+        return Node.append(parser.elementToNode(self), nodes);
+    }
+
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn _replaceChildren(self: *parser.Element, nodes: ?Variadic(*parser.Node)) !void {
+        return Node.replaceChildren(parser.elementToNode(self), nodes);
+    }
+
     pub fn deinit(_: *parser.Element, _: std.mem.Allocator) void {}
 };
 
@@ -358,6 +380,9 @@ pub fn testExecFn(
         .{ .src = "c.firstElementChild.nodeName", .ex = "A" },
         .{ .src = "c.lastElementChild.nodeName", .ex = "P" },
         .{ .src = "c.childElementCount", .ex = "3" },
+
+        .{ .src = "c.prepend(document.createTextNode('foo'))", .ex = "undefined" },
+        .{ .src = "c.append(document.createTextNode('bar'))", .ex = "undefined" },
     };
     try checkCases(js_env, &parentNode);
 

src/dom/node.zig

@@ -4,6 +4,8 @@ const jsruntime = @import("jsruntime");
 const Case = jsruntime.test_utils.Case;
 const checkCases = jsruntime.test_utils.checkCases;
 const runScript = jsruntime.test_utils.runScript;
+const Variadic = jsruntime.Variadic;
+
 const generate = @import("../generate.zig");
 
 const parser = @import("../netsurf.zig");
@@ -257,6 +259,62 @@ pub const Node = struct {
         return try Node.toInterface(res);
     }
 
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn prepend(self: *parser.Node, nodes: ?Variadic(*parser.Node)) !void {
+        if (nodes == null) return;
+        if (nodes.?.slice.len == 0) return;
+        const first = try parser.nodeFirstChild(self);
+
+        if (first == null) {
+            for (nodes.?.slice) |node| {
+                _ = try parser.nodeAppendChild(self, node);
+            }
+            return;
+        }
+
+        for (nodes.?.slice) |node| {
+            _ = try parser.nodeInsertBefore(self, node, first.?);
+        }
+    }
+
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn append(self: *parser.Node, nodes: ?Variadic(*parser.Node)) !void {
+        if (nodes == null) return;
+        if (nodes.?.slice.len == 0) return;
+        for (nodes.?.slice) |node| {
+            _ = try parser.nodeAppendChild(self, node);
+        }
+    }
+
+    // TODO according with https://dom.spec.whatwg.org/#parentnode, the
+    // function must accept either node or string.
+    // blocked by https://github.com/lightpanda-io/jsruntime-lib/issues/114
+    pub fn replaceChildren(self: *parser.Node, nodes: ?Variadic(*parser.Node)) !void {
+        if (nodes == null) return;
+        if (nodes.?.slice.len == 0) return;
+
+        // remove existing children
+        if (try parser.nodeHasChildNodes(self)) {
+            const children = try parser.nodeGetChildNodes(self);
+            const ln = try parser.nodeListLength(children);
+            var i: u32 = 0;
+            while (i < ln) {
+                defer i += 1;
+                const child = try parser.nodeListItem(children, i) orelse continue;
+                _ = try parser.nodeRemoveChild(self, child);
+            }
+        }
+
+        // add new children
+        for (nodes.?.slice) |node| {
+            _ = try parser.nodeAppendChild(self, node);
+        }
+    }
+
     pub fn deinit(_: *parser.Node, _: std.mem.Allocator) void {}
 };
 

src/netsurf.zig

@@ -620,6 +620,13 @@ pub fn nodeSetTextContent(node: *Node, value: []const u8) !void {
     try DOMErr(err);
 }
 
+pub fn nodeGetChildNodes(node: *Node) !*NodeList {
+    var nlist: ?*NodeList = undefined;
+    const err = nodeVtable(node).dom_node_get_child_nodes.?(node, &nlist);
+    try DOMErr(err);
+    return nlist.?;
+}
+
 pub fn nodeAppendChild(node: *Node, child: *Node) !*Node {
     var res: ?*Node = undefined;
     const err = nodeVtable(node).dom_node_append_child.?(node, child, &res);