Cargoify servo

components/script/dom/htmlobjectelement.rs

@@ -0,0 +1,113 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::codegen::Bindings::AttrBinding::AttrMethods;
+use dom::bindings::codegen::Bindings::HTMLObjectElementBinding;
+use dom::bindings::codegen::Bindings::HTMLObjectElementBinding::HTMLObjectElementMethods;
+use dom::bindings::codegen::InheritTypes::HTMLObjectElementDerived;
+use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast};
+use dom::bindings::js::{JSRef, Temporary};
+use dom::bindings::utils::{Reflectable, Reflector};
+use dom::document::Document;
+use dom::element::{Element, HTMLObjectElementTypeId};
+use dom::element::AttributeHandlers;
+use dom::eventtarget::{EventTarget, NodeTargetTypeId};
+use dom::htmlelement::HTMLElement;
+use dom::node::{Node, ElementNodeTypeId, NodeHelpers, window_from_node};
+use dom::validitystate::ValidityState;
+use dom::virtualmethods::VirtualMethods;
+
+use servo_net::image_cache_task;
+use servo_net::image_cache_task::ImageCacheTask;
+use servo_util::atom::Atom;
+use servo_util::namespace::Null;
+use servo_util::str::DOMString;
+
+use url::Url;
+
+#[deriving(Encodable)]
+pub struct HTMLObjectElement {
+    pub htmlelement: HTMLElement,
+}
+
+impl HTMLObjectElementDerived for EventTarget {
+    fn is_htmlobjectelement(&self) -> bool {
+        self.type_id == NodeTargetTypeId(ElementNodeTypeId(HTMLObjectElementTypeId))
+    }
+}
+
+impl HTMLObjectElement {
+    pub fn new_inherited(localName: DOMString, document: &JSRef<Document>) -> HTMLObjectElement {
+        HTMLObjectElement {
+            htmlelement: HTMLElement::new_inherited(HTMLObjectElementTypeId, localName, document),
+        }
+    }
+
+    pub fn new(localName: DOMString, document: &JSRef<Document>) -> Temporary<HTMLObjectElement> {
+        let element = HTMLObjectElement::new_inherited(localName, document);
+        Node::reflect_node(box element, document, HTMLObjectElementBinding::Wrap)
+    }
+}
+
+trait ProcessDataURL {
+    fn process_data_url(&self, image_cache: ImageCacheTask);
+}
+
+impl<'a> ProcessDataURL for JSRef<'a, HTMLObjectElement> {
+    // Makes the local `data` member match the status of the `data` attribute and starts
+    /// prefetching the image. This method must be called after `data` is changed.
+    fn process_data_url(&self, image_cache: ImageCacheTask) {
+        let elem: &JSRef<Element> = ElementCast::from_ref(self);
+
+        // TODO: support other values
+        match (elem.get_attribute(Null, "type").map(|x| x.root().Value()),
+               elem.get_attribute(Null, "data").map(|x| x.root().Value())) {
+            (None, Some(uri)) => {
+                if is_image_data(uri.as_slice()) {
+                    let data_url = Url::parse(uri.as_slice()).unwrap();
+                    // Issue #84
+                    image_cache.send(image_cache_task::Prefetch(data_url));
+                }
+            }
+            _ => { }
+        }
+    }
+}
+
+pub fn is_image_data(uri: &str) -> bool {
+    static types: &'static [&'static str] = &["data:image/png", "data:image/gif", "data:image/jpeg"];
+    types.iter().any(|&type_| uri.starts_with(type_))
+}
+
+impl<'a> HTMLObjectElementMethods for JSRef<'a, HTMLObjectElement> {
+    fn Validity(&self) -> Temporary<ValidityState> {
+        let window = window_from_node(self).root();
+        ValidityState::new(&*window)
+    }
+}
+
+impl<'a> VirtualMethods for JSRef<'a, HTMLObjectElement> {
+    fn super_type<'a>(&'a self) -> Option<&'a VirtualMethods> {
+        let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_ref(self);
+        Some(htmlelement as &VirtualMethods)
+    }
+
+    fn after_set_attr(&self, name: &Atom, value: DOMString) {
+        match self.super_type() {
+            Some(ref s) => s.after_set_attr(name, value),
+            _ => (),
+        }
+
+        if "data" == name.as_slice() {
+            let window = window_from_node(self).root();
+            self.process_data_url(window.deref().image_cache_task.clone());
+        }
+    }
+}
+
+impl Reflectable for HTMLObjectElement {
+    fn reflector<'a>(&'a self) -> &'a Reflector {
+        self.htmlelement.reflector()
+    }
+}