mirror of
https://github.com/servo/servo.git
synced 2025-06-23 16:44:33 +01:00
296 lines
9.9 KiB
Rust
296 lines
9.9 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::BindingDeclarations::HTMLImageElementBinding;
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use dom::bindings::codegen::InheritTypes::{NodeCast, ElementCast, HTMLElementCast, HTMLImageElementDerived};
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use dom::bindings::error::ErrorResult;
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use dom::bindings::js::{JS, JSRef, Temporary};
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use dom::bindings::trace::Untraceable;
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use dom::document::Document;
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use dom::element::{Element, HTMLImageElementTypeId};
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use dom::element::AttributeHandlers;
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use dom::eventtarget::{EventTarget, NodeTargetTypeId};
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use dom::htmlelement::HTMLElement;
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use dom::node::{Node, ElementNodeTypeId, NodeHelpers, window_from_node};
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use dom::virtualmethods::VirtualMethods;
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use servo_util::geometry::to_px;
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use servo_net::image_cache_task;
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use servo_util::url::parse_url;
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use servo_util::str::DOMString;
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use url::Url;
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#[deriving(Encodable)]
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pub struct HTMLImageElement {
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pub htmlelement: HTMLElement,
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image: Untraceable<Option<Url>>,
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}
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impl HTMLImageElementDerived for EventTarget {
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fn is_htmlimageelement(&self) -> bool {
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self.type_id == NodeTargetTypeId(ElementNodeTypeId(HTMLImageElementTypeId))
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}
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}
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trait PrivateHTMLImageElementHelpers {
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fn update_image(&mut self, value: Option<DOMString>, url: Option<Url>);
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}
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impl<'a> PrivateHTMLImageElementHelpers for JSRef<'a, HTMLImageElement> {
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/// Makes the local `image` member match the status of the `src` attribute and starts
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/// prefetching the image. This method must be called after `src` is changed.
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fn update_image(&mut self, value: Option<DOMString>, url: Option<Url>) {
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let self_alias = self.clone();
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let node_alias: &JSRef<Node> = NodeCast::from_ref(&self_alias);
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let document = node_alias.owner_doc().root();
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let window = document.deref().window.root();
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let image_cache = &window.image_cache_task;
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match value {
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None => {
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*self.image = None;
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}
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Some(src) => {
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let img_url = parse_url(src, url);
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*self.image = Some(img_url.clone());
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// inform the image cache to load this, but don't store a
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// handle.
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//
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// TODO (Issue #84): don't prefetch if we are within a
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// <noscript> tag.
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image_cache.send(image_cache_task::Prefetch(img_url));
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}
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}
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}
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}
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impl HTMLImageElement {
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pub fn new_inherited(localName: DOMString, document: &JSRef<Document>) -> HTMLImageElement {
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HTMLImageElement {
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htmlelement: HTMLElement::new_inherited(HTMLImageElementTypeId, localName, document),
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image: Untraceable::new(None),
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}
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}
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pub fn new(localName: DOMString, document: &JSRef<Document>) -> Temporary<HTMLImageElement> {
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let element = HTMLImageElement::new_inherited(localName, document);
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Node::reflect_node(box element, document, HTMLImageElementBinding::Wrap)
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}
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}
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pub trait LayoutHTMLImageElementHelpers {
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unsafe fn image<'a>(&'a self) -> &'a Option<Url>;
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}
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impl LayoutHTMLImageElementHelpers for JS<HTMLImageElement> {
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unsafe fn image<'a>(&'a self) -> &'a Option<Url> {
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&*(*self.unsafe_get()).image
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}
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}
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pub trait HTMLImageElementMethods {
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fn Alt(&self) -> DOMString;
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fn SetAlt(&mut self, alt: DOMString);
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fn Src(&self) -> DOMString;
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fn SetSrc(&mut self, src: DOMString);
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fn CrossOrigin(&self) -> DOMString;
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fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult;
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fn UseMap(&self) -> DOMString;
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fn SetUseMap(&mut self, use_map: DOMString);
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fn IsMap(&self) -> bool;
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fn SetIsMap(&mut self, is_map: bool);
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fn Width(&self) -> u32;
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fn SetWidth(&mut self, width: u32);
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fn Height(&self) -> u32;
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fn SetHeight(&mut self, height: u32);
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fn NaturalWidth(&self) -> u32;
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fn NaturalHeight(&self) -> u32;
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fn Complete(&self) -> bool;
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fn Name(&self) -> DOMString;
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fn SetName(&mut self, name: DOMString);
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fn Align(&self) -> DOMString;
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fn SetAlign(&mut self, align: DOMString);
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fn Hspace(&self) -> u32;
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fn SetHspace(&mut self, hspace: u32);
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fn Vspace(&self) -> u32;
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fn SetVspace(&mut self, vspace: u32);
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fn LongDesc(&self) -> DOMString;
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fn SetLongDesc(&mut self, longdesc: DOMString);
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fn Border(&self) -> DOMString;
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fn SetBorder(&mut self, border: DOMString);
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}
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impl<'a> HTMLImageElementMethods for JSRef<'a, HTMLImageElement> {
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fn Alt(&self) -> DOMString {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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element.get_string_attribute("alt")
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}
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fn SetAlt(&mut self, alt: DOMString) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_string_attribute("alt", alt)
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}
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fn Src(&self) -> DOMString {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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element.get_string_attribute("src")
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}
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fn SetSrc(&mut self, src: DOMString) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_url_attribute("src", src)
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}
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fn CrossOrigin(&self) -> DOMString {
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"".to_owned()
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}
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fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
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Ok(())
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}
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fn UseMap(&self) -> DOMString {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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element.get_string_attribute("useMap")
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}
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fn SetUseMap(&mut self, use_map: DOMString) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_string_attribute("useMap", use_map)
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}
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fn IsMap(&self) -> bool {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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from_str::<bool>(element.get_string_attribute("hspace")).unwrap()
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}
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fn SetIsMap(&mut self, is_map: bool) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_string_attribute("isMap", is_map.to_str())
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}
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fn Width(&self) -> u32 {
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let node: &JSRef<Node> = NodeCast::from_ref(self);
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let rect = node.get_bounding_content_box();
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to_px(rect.size.width) as u32
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}
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fn SetWidth(&mut self, width: u32) {
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let elem: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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elem.set_uint_attribute("width", width)
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}
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fn Height(&self) -> u32 {
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let node: &JSRef<Node> = NodeCast::from_ref(self);
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let rect = node.get_bounding_content_box();
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to_px(rect.size.height) as u32
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}
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fn SetHeight(&mut self, height: u32) {
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let elem: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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elem.set_uint_attribute("height", height)
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}
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fn NaturalWidth(&self) -> u32 {
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0
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}
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fn NaturalHeight(&self) -> u32 {
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0
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}
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fn Complete(&self) -> bool {
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false
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}
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fn Name(&self) -> DOMString {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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element.get_string_attribute("name")
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}
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fn SetName(&mut self, name: DOMString) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_string_attribute("name", name)
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}
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fn Align(&self) -> DOMString {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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element.get_string_attribute("align")
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}
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fn SetAlign(&mut self, align: DOMString) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_string_attribute("align", align)
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}
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fn Hspace(&self) -> u32 {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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from_str::<u32>(element.get_string_attribute("hspace")).unwrap()
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}
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fn SetHspace(&mut self, hspace: u32) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_uint_attribute("hspace", hspace)
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}
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fn Vspace(&self) -> u32 {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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from_str::<u32>(element.get_string_attribute("vspace")).unwrap()
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}
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fn SetVspace(&mut self, vspace: u32) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_uint_attribute("vspace", vspace)
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}
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fn LongDesc(&self) -> DOMString {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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element.get_string_attribute("longdesc")
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}
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fn SetLongDesc(&mut self, longdesc: DOMString) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_string_attribute("longdesc", longdesc)
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}
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fn Border(&self) -> DOMString {
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let element: &JSRef<Element> = ElementCast::from_ref(self);
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element.get_string_attribute("border")
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}
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fn SetBorder(&mut self, border: DOMString) {
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let element: &mut JSRef<Element> = ElementCast::from_mut_ref(self);
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element.set_string_attribute("border", border)
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}
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}
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impl<'a> VirtualMethods for JSRef<'a, HTMLImageElement> {
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fn super_type<'a>(&'a mut self) -> Option<&'a mut VirtualMethods:> {
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let htmlelement: &mut JSRef<HTMLElement> = HTMLElementCast::from_mut_ref(self);
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Some(htmlelement as &mut VirtualMethods:)
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}
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fn after_set_attr(&mut self, name: DOMString, value: DOMString) {
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match self.super_type() {
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Some(ref mut s) => s.after_set_attr(name.clone(), value.clone()),
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_ => (),
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}
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if "src" == name {
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let window = window_from_node(self).root();
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let url = Some(window.deref().get_url());
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self.update_image(Some(value), url);
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}
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}
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fn before_remove_attr(&mut self, name: DOMString, value: DOMString) {
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match self.super_type() {
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Some(ref mut s) => s.before_remove_attr(name.clone(), value.clone()),
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_ => (),
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}
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if "src" == name {
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self.update_image(None, None);
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}
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}
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}
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