Make the HTML parser parse into the document rather than an element.

This removes the duplicate html element.

src/components/script/dom/document.rs

@@ -77,17 +77,6 @@ impl AbstractDocument {
             document: ptr as *mut Box<Document>
         }
     }
-
-    pub fn set_root(&self, root: AbstractNode<ScriptView>) {
-        assert!(do root.traverse_preorder().all |node| {
-            node.node().owner_doc() == *self
-        });
-
-        let document = self.mut_document();
-        document.node.AppendChild(AbstractNode::from_document(*self), root);
-        // Register elements having "id" attribute to the owner doc.
-        document.register_nodes_with_id(&root);
-    }
 }
 
 #[deriving(Eq)]
@@ -173,7 +162,9 @@ impl Reflectable for Document {
 
 impl Document {
     pub fn GetDocumentElement(&self) -> Option<AbstractNode<ScriptView>> {
-        self.node.first_child
+        do self.node.children().find |c| {
+            c.is_element()
+        }
     }
 
     fn get_cx(&self) -> *JSContext {

src/components/script/dom/node.rs

@@ -441,9 +441,7 @@ impl<'self, View> AbstractNode<View> {
     }
 
     pub fn children(&self) -> AbstractNodeChildrenIterator<View> {
-        AbstractNodeChildrenIterator {
-            current_node: self.first_child(),
-        }
+        self.node().children()
     }
 
     // Issue #1030: should not walk the tree
@@ -498,6 +496,12 @@ impl<View> Node<View> {
     pub fn set_owner_doc(&mut self, document: AbstractDocument) {
         self.owner_doc = Some(document);
     }
+
+    pub fn children(&self) -> AbstractNodeChildrenIterator<View> {
+        AbstractNodeChildrenIterator {
+            current_node: self.first_child,
+        }
+    }
 }
 
 impl Node<ScriptView> {

src/components/script/html/hubbub_html_parser.rs

@@ -72,7 +72,6 @@ pub enum HtmlDiscoveryMessage {
 }
 
 pub struct HtmlParserResult {
-    root: AbstractNode<ScriptView>,
     discovery_port: Port<HtmlDiscoveryMessage>,
 }
 
@@ -300,12 +299,11 @@ pub fn parse_html(cx: *JSContext,
         (*page).url = Some((url2.clone(), true));
     }
 
-    // Build the root node.
-    let root = HTMLHtmlElement::new(~"html", document);
-    debug!("created new node");
     let mut parser = hubbub::Parser("UTF-8", false);
     debug!("created parser");
-    parser.set_document_node(unsafe { root.to_hubbub_node() });
+
+    let document_node = AbstractNode::<ScriptView>::from_document(document);
+    parser.set_document_node(unsafe { document_node.to_hubbub_node() });
     parser.enable_scripting(true);
     parser.enable_styling(true);
 
@@ -427,10 +425,7 @@ pub fn parse_html(cx: *JSContext,
                 debug!("append child {:x} {:x}", parent, child);
                 let parent: AbstractNode<ScriptView> = NodeWrapping::from_hubbub_node(parent);
                 let child: AbstractNode<ScriptView> = NodeWrapping::from_hubbub_node(child);
-                // FIXME this needs to be AppendChild.
-                //       Probably blocked on #838, so that we can remove the
-                //       double root element.
-                parent.add_child(child, None);
+                parent.AppendChild(child);
             }
             child
         },
@@ -543,7 +538,6 @@ pub fn parse_html(cx: *JSContext,
     js_chan.send(JSTaskExit);
 
     HtmlParserResult {
-        root: root,
         discovery_port: discovery_port,
     }
 }

src/components/script/script_task.rs

@@ -701,7 +701,7 @@ impl ScriptTask {
                                                                  self.constellation_chan.clone());
 
 
-        let HtmlParserResult {root, discovery_port} = html_parsing_result;
+        let HtmlParserResult {discovery_port} = html_parsing_result;
 
         // Create the root frame.
         page.frame = Some(Frame {
@@ -741,11 +741,8 @@ impl ScriptTask {
             }
         }
 
-        // Tie the root into the document. This will kick off the initial reflow
-        // of the page.
-        // FIXME: We have no way to ensure that the first reflow performed is a
-        //        ReflowForDisplay operation.
-        document.set_root(root);
+        // Kick off the initial reflow of the page.
+        document.document().content_changed();
 
         // No more reflow required
         page.url = Some((url, false));

src/test/html/content/test_documentElement.html

@@ -4,7 +4,7 @@
 <script>
 is_a(window, Window);
 is_a(document.documentElement, HTMLHtmlElement);
-is_a(document.documentElement.firstChild, HTMLHtmlElement);
+is_a(document.documentElement.firstChild, HTMLHeadElement);
 is(document.documentElement.nextSibling, null);
 is_a(document, HTMLDocument);
 is_a(document, Document);