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script: Move the stylesheet loading code from htmllinkelement to stylesheet_loader. Make it track subresource loads properly.
This commit is contained in:
Emilio Cobos Álvarez
parent
21bf91c386
commit
7582a2d59d
4 changed files with 274 additions and 154 deletions
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@ -3,52 +3,34 @@
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use cssparser::Parser as CssParser;
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use document_loader::LoadType;
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use dom::attr::Attr;
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use dom::bindings::cell::DOMRefCell;
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use dom::bindings::codegen::Bindings::DOMTokenListBinding::DOMTokenListMethods;
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use dom::bindings::codegen::Bindings::HTMLLinkElementBinding;
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use dom::bindings::codegen::Bindings::HTMLLinkElementBinding::HTMLLinkElementMethods;
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use dom::bindings::inheritance::Castable;
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use dom::bindings::js::{MutNullableJS, Root, RootedReference};
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use dom::bindings::refcounted::Trusted;
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use dom::bindings::reflector::DomObject;
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use dom::bindings::str::DOMString;
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use dom::cssstylesheet::CSSStyleSheet;
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use dom::document::Document;
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use dom::domtokenlist::DOMTokenList;
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use dom::element::{AttributeMutation, Element, ElementCreator};
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use dom::eventtarget::EventTarget;
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use dom::globalscope::GlobalScope;
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use dom::htmlelement::HTMLElement;
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use dom::node::{Node, document_from_node, window_from_node};
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use dom::stylesheet::StyleSheet as DOMStyleSheet;
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use dom::virtualmethods::VirtualMethods;
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use encoding::EncodingRef;
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use encoding::all::UTF_8;
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use html5ever_atoms::LocalName;
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use hyper::header::ContentType;
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use hyper::mime::{Mime, TopLevel, SubLevel};
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use hyper_serde::Serde;
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use ipc_channel::ipc;
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use ipc_channel::router::ROUTER;
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use net_traits::{FetchResponseListener, FetchMetadata, Metadata, NetworkError, ReferrerPolicy};
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use net_traits::request::{CredentialsMode, Destination, RequestInit, Type as RequestType};
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use network_listener::{NetworkListener, PreInvoke};
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use script_layout_interface::message::Msg;
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use script_traits::{MozBrowserEvent, ScriptMsg as ConstellationMsg};
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use servo_url::ServoUrl;
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use std::ascii::AsciiExt;
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use std::borrow::ToOwned;
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use std::cell::Cell;
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use std::default::Default;
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use std::mem;
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use std::sync::{Arc, Mutex};
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use std::sync::Arc;
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use style::attr::AttrValue;
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use style::media_queries::{MediaList, parse_media_query_list};
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use style::parser::ParserContextExtraData;
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use style::media_queries::parse_media_query_list;
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use style::str::HTML_SPACE_CHARACTERS;
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use style::stylesheets::{Stylesheet, Origin};
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use style::stylesheets::Stylesheet;
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use stylesheet_loader::{StylesheetLoader, StylesheetContextSource};
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unsafe_no_jsmanaged_fields!(Stylesheet);
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@ -288,50 +270,13 @@ impl HTMLLinkElement {
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let mut css_parser = CssParser::new(&mq_str);
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let media = parse_media_query_list(&mut css_parser);
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// TODO: #8085 - Don't load external stylesheets if the node's mq doesn't match.
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let elem = Trusted::new(self);
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let context = Arc::new(Mutex::new(StylesheetContext {
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elem: elem,
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// TODO: #8085 - Don't load external stylesheets if the node's mq
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// doesn't match.
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let loader = StylesheetLoader::for_element(self.upcast());
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loader.load(StylesheetContextSource::LinkElement {
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url: url,
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media: Some(media),
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data: vec!(),
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metadata: None,
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url: url.clone(),
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}));
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let (action_sender, action_receiver) = ipc::channel().unwrap();
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let listener = NetworkListener {
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context: context,
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task_source: document.window().networking_task_source(),
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wrapper: Some(document.window().get_runnable_wrapper())
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};
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ROUTER.add_route(action_receiver.to_opaque(), box move |message| {
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listener.notify_fetch(message.to().unwrap());
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});
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if self.parser_inserted.get() {
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document.increment_script_blocking_stylesheet_count();
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}
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let referrer_policy = match self.RelList().Contains("noreferrer".into()) {
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true => Some(ReferrerPolicy::NoReferrer),
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false => document.get_referrer_policy(),
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};
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let request = RequestInit {
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url: url.clone(),
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type_: RequestType::Style,
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destination: Destination::Style,
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credentials_mode: CredentialsMode::Include,
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use_url_credentials: true,
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origin: document.url(),
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pipeline_id: Some(self.global().pipeline_id()),
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referrer_url: Some(document.url()),
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referrer_policy: referrer_policy,
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.. RequestInit::default()
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};
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document.fetch_async(LoadType::Stylesheet(url), request, action_sender);
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}
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fn handle_favicon_url(&self, rel: &str, href: &str, sizes: &Option<String>) {
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@ -352,95 +297,6 @@ impl HTMLLinkElement {
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}
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}
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/// The context required for asynchronously loading an external stylesheet.
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struct StylesheetContext {
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/// The element that initiated the request.
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elem: Trusted<HTMLLinkElement>,
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media: Option<MediaList>,
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/// The response body received to date.
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data: Vec<u8>,
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/// The response metadata received to date.
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metadata: Option<Metadata>,
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/// The initial URL requested.
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url: ServoUrl,
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}
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impl PreInvoke for StylesheetContext {}
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impl FetchResponseListener for StylesheetContext {
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fn process_request_body(&mut self) {}
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fn process_request_eof(&mut self) {}
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fn process_response(&mut self,
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metadata: Result<FetchMetadata, NetworkError>) {
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self.metadata = metadata.ok().map(|m| {
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match m {
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FetchMetadata::Unfiltered(m) => m,
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FetchMetadata::Filtered { unsafe_, .. } => unsafe_
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}
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});
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if let Some(ref meta) = self.metadata {
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if let Some(Serde(ContentType(Mime(TopLevel::Text, SubLevel::Css, _)))) = meta.content_type {
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} else {
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self.elem.root().upcast::<EventTarget>().fire_event(atom!("error"));
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}
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}
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}
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fn process_response_chunk(&mut self, mut payload: Vec<u8>) {
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self.data.append(&mut payload);
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}
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fn process_response_eof(&mut self, status: Result<(), NetworkError>) {
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let elem = self.elem.root();
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let document = document_from_node(&*elem);
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let mut successful = false;
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if status.is_ok() {
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let metadata = match self.metadata.take() {
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Some(meta) => meta,
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None => return,
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};
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let is_css = metadata.content_type.map_or(false, |Serde(ContentType(Mime(top, sub, _)))|
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top == TopLevel::Text && sub == SubLevel::Css);
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let data = if is_css { mem::replace(&mut self.data, vec!()) } else { vec!() };
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// TODO: Get the actual value. http://dev.w3.org/csswg/css-syntax/#environment-encoding
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let environment_encoding = UTF_8 as EncodingRef;
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let protocol_encoding_label = metadata.charset.as_ref().map(|s| &**s);
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let final_url = metadata.final_url;
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let win = window_from_node(&*elem);
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let sheet = Arc::new(Stylesheet::from_bytes(
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&data, final_url, protocol_encoding_label, Some(environment_encoding),
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Origin::Author, self.media.take().unwrap(), win.css_error_reporter(),
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ParserContextExtraData::default()));
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let win = window_from_node(&*elem);
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win.layout_chan().send(Msg::AddStylesheet(sheet.clone())).unwrap();
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*elem.stylesheet.borrow_mut() = Some(sheet);
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document.invalidate_stylesheets();
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// FIXME: Revisit once consensus is reached at: https://github.com/whatwg/html/issues/1142
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successful = metadata.status.map_or(false, |(code, _)| code == 200);
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}
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if elem.parser_inserted.get() {
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document.decrement_script_blocking_stylesheet_count();
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}
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document.finish_load(LoadType::Stylesheet(self.url.clone()));
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let event = if successful { atom!("load") } else { atom!("error") };
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elem.upcast::<EventTarget>().fire_event(event);
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}
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}
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impl HTMLLinkElementMethods for HTMLLinkElement {
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// https://html.spec.whatwg.org/multipage/#dom-link-href
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make_url_getter!(Href, "href");
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@ -102,10 +102,19 @@ impl HTMLStyleElement {
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let data = node.GetTextContent().expect("Element.textContent must be a string");
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let mq = parse_media_query_list(&mut CssParser::new(&mq_str));
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let sheet = Stylesheet::from_str(&data, url, Origin::Author, mq, win.css_error_reporter(),
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let loader = StylesheetLoader::for_element(self.upcast());
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let sheet = Stylesheet::from_str(&data, url, Origin::Author, mq,
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Some(&loader),
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win.css_error_reporter(),
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ParserContextExtraData::default());
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let sheet = Arc::new(sheet);
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// No subresource loads were triggered, just fire the load event now.
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if self.pending_loads.get() == 0 {
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self.upcast::<EventTarget>().fire_event(atom!("load"));
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}
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win.layout_chan().send(Msg::AddStylesheet(sheet.clone())).unwrap();
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*self.stylesheet.borrow_mut() = Some(sheet);
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let doc = document_from_node(self);
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