Issue #1071 - Ensure that Documents always have a non-null Window.

src/components/script/dom/document.rs

@@ -112,7 +112,7 @@ pub enum DocumentType {
 pub struct Document {
     priv root: Option<AbstractNode<ScriptView>>,
     reflector_: Reflector,
-    window: Option<@mut Window>,
+    window: @mut Window,
     doctype: DocumentType,
     title: ~str,
     idmap: HashMap<~str, AbstractNode<ScriptView>>
@@ -120,7 +120,7 @@ pub struct Document {
 
 impl Document {
     #[fixed_stack_segment]
-    pub fn new(window: Option<@mut Window>, doctype: DocumentType) -> Document {
+    pub fn new(window: @mut Window, doctype: DocumentType) -> Document {
         Document {
             root: None,
             reflector_: Reflector::new(),
@@ -134,7 +134,7 @@ impl Document {
     pub fn Constructor(owner: @mut Window) -> Fallible<AbstractDocument> {
         let cx = owner.get_cx();
 
-        let document = AbstractDocument::as_abstract(cx, @mut Document::new(None, XML));
+        let document = AbstractDocument::as_abstract(cx, @mut Document::new(owner, XML));
 
         let root = @HTMLHtmlElement {
             htmlelement: HTMLElement::new(HTMLHtmlElementTypeId, ~"html", document)
@@ -216,10 +216,7 @@ impl Reflectable for Document {
 
 impl BindingObject for Document {
     fn GetParentObject(&self, _cx: *JSContext) -> Option<@mut Reflectable> {
-        match self.window {
+        Some(self.window as @mut Reflectable)
-            Some(win) => Some(win as @mut Reflectable),
-            None => None
-        }
     }
 }
 
@@ -249,11 +246,11 @@ impl Document {
     }
 
     fn get_cx(&self) -> *JSContext {
-        self.window.get_ref().get_cx()
+        self.window.get_cx()
     }
 
     fn get_scope_and_cx(&self) -> (*JSObject, *JSContext) {
-        let win = self.window.get_ref();
+        let win = self.window;
         (win.reflector().get_jsobject(), win.get_cx())
     }
 
@@ -518,15 +515,11 @@ impl Document {
     }
 
     pub fn content_changed(&self) {
-        for window in self.window.iter() {
+        self.window.content_changed();
-            window.content_changed()
-        }
     }
 
     pub fn wait_until_safe_to_modify_dom(&self) {
-        for window in self.window.iter() {
+        self.window.wait_until_safe_to_modify_dom();
-            window.wait_until_safe_to_modify_dom();
-        }
     }
 
     pub fn register_nodes_with_id(&mut self, root: &AbstractNode<ScriptView>) {

src/components/script/dom/domparser.rs

@@ -43,10 +43,10 @@ impl DOMParser {
         let cx = self.owner.get_cx();
         let document = match ty {
             Text_html => {
-                HTMLDocument::new(None)
+                HTMLDocument::new(self.owner)
             }
             Text_xml => {
-                AbstractDocument::as_abstract(cx, @mut Document::new(None, XML))
+                AbstractDocument::as_abstract(cx, @mut Document::new(self.owner, XML))
             }
             _ => {
                 fail!("unsupported document type")

src/components/script/dom/element.rs

@@ -274,7 +274,7 @@ impl Element {
 
     pub fn GetClientRects(&self, abstract_self: AbstractNode<ScriptView>) -> @mut ClientRectList {
         let document = self.node.owner_doc;
-        let win = document.with_base(|doc| doc.window).expect("no window");
+        let win = document.with_base(|doc| doc.window);
         let node = abstract_self;
         assert!(node.is_element());
         let (port, chan) = comm::stream();
@@ -301,7 +301,7 @@ impl Element {
 
     pub fn GetBoundingClientRect(&self, abstract_self: AbstractNode<ScriptView>) -> @mut ClientRect {
         let document = self.node.owner_doc;
-        let win = document.with_base(|doc| doc.window).expect("no window");
+        let win = document.with_base(|doc| doc.window);
         let node = abstract_self;
         assert!(node.is_element());
         let (port, chan) = comm::stream();

src/components/script/dom/htmldocument.rs

@@ -24,12 +24,12 @@ pub struct HTMLDocument {
 }
 
 impl HTMLDocument {
-    pub fn new(window: Option<@mut Window>) -> AbstractDocument {
+    pub fn new(window: @mut Window) -> AbstractDocument {
         let doc = @mut HTMLDocument {
             parent: Document::new(window, HTML)
         };
 
-        AbstractDocument::as_abstract(window.get_ref().get_cx(), doc)
+        AbstractDocument::as_abstract(window.get_cx(), doc)
     }
 }
 

src/components/script/dom/htmlimageelement.rs

@@ -44,13 +44,12 @@ impl HTMLImageElement {
         if "src" == name {
             let doc = self.htmlelement.element.node.owner_doc;
             do doc.with_base |doc| {
-                for window in doc.window.iter() {
+                let window = doc.window;
                 let url = window.page.url.map(|&(ref url, _)| url.clone());
                 self.update_image(window.image_cache_task.clone(), url);
             }
         }
     }
-    }
 
     pub fn Alt(&self) -> DOMString {
         None
@@ -100,9 +99,7 @@ impl HTMLImageElement {
 
     pub fn Width(&self, abstract_self: AbstractNode<ScriptView>) -> u32 {
         let node = &self.htmlelement.element.node;
-        match node.owner_doc.with_base(|doc| doc.window) {
+        let page = node.owner_doc.with_base(|doc| doc.window).page;
-            Some(win) => {
-                let page = win.page;
         let (port, chan) = stream();
         match page.query_layout(ContentBoxQuery(abstract_self, chan), port) {
             ContentBoxResponse(rect) => {
@@ -110,12 +107,6 @@ impl HTMLImageElement {
             }
         }
     }
-            None => {
-                debug!("no window");
-                0
-            }
-        }
-    }
 
     pub fn SetWidth(&mut self,
                     abstract_self: AbstractNode<ScriptView>,
@@ -129,9 +120,7 @@ impl HTMLImageElement {
 
     pub fn Height(&self, abstract_self: AbstractNode<ScriptView>) -> u32 {
         let node = &self.htmlelement.element.node;
-        match node.owner_doc.with_base(|doc| doc.window) {
+        let page = node.owner_doc.with_base(|doc| doc.window).page;
-            Some(win) => {
-                let page = win.page;
         let (port, chan) = stream();
         match page.query_layout(ContentBoxQuery(abstract_self, chan), port) {
             ContentBoxResponse(rect) => {
@@ -139,12 +128,6 @@ impl HTMLImageElement {
             }
         }
     }
-            None => {
-                debug!("no window");
-                0
-            }
-        }
-    }
 
     pub fn SetHeight(&mut self,
                      abstract_self: AbstractNode<ScriptView>,

src/components/script/dom/node.rs

@@ -664,7 +664,7 @@ impl Node<ScriptView> {
     }
 
     pub fn get_scope_and_cx(&self) -> (*JSObject, *JSContext) {
-        let win = self.owner_doc.with_base(|doc| doc.window.unwrap());
+        let win = self.owner_doc.with_base(|doc| doc.window);
         (win.reflector().get_jsobject(), win.get_cx())
     }
 

src/components/script/script_task.rs

@@ -717,7 +717,7 @@ impl ScriptTask {
         // Parse HTML.
         //
         // Note: We can parse the next document in parallel with any previous documents.
-        let document = HTMLDocument::new(Some(window));
+        let document = HTMLDocument::new(window);
 
         let html_parsing_result = hubbub_html_parser::parse_html(cx.ptr,
                                                                  document,