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Properly track rel keywords for <a>/<area>/<form> elements (#33462)
* Use linkrelations for all linkable elements Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Document LinkRelations Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Rename linkrelations.rs -> links.rs This module is supposed to include general-purpose link related stuff. Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Parse all "rel" keywords Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> --------- Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
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Simon Wülker
GitHub
parent
d3d6a22d27
commit
a165982622
7 changed files with 540 additions and 300 deletions
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@ -2,48 +2,46 @@
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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 https://mozilla.org/MPL/2.0/. */
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use std::cell::Cell;
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use std::default::Default;
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use dom_struct::dom_struct;
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use html5ever::{local_name, namespace_url, ns, LocalName, Prefix};
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use js::rust::HandleObject;
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use net_traits::request::Referrer;
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use num_traits::ToPrimitive;
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use script_traits::{HistoryEntryReplacement, LoadData, LoadOrigin};
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use servo_atoms::Atom;
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use servo_url::ServoUrl;
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use style::attr::AttrValue;
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use crate::dom::activation::Activatable;
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use crate::dom::attr::Attr;
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use crate::dom::bindings::cell::DomRefCell;
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use crate::dom::bindings::codegen::Bindings::AttrBinding::AttrMethods;
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use crate::dom::bindings::codegen::Bindings::HTMLAnchorElementBinding::HTMLAnchorElementMethods;
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use crate::dom::bindings::codegen::Bindings::MouseEventBinding::MouseEventMethods;
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use crate::dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
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use crate::dom::bindings::inheritance::Castable;
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use crate::dom::bindings::refcounted::Trusted;
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use crate::dom::bindings::root::{DomRoot, MutNullableDom};
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use crate::dom::bindings::str::{DOMString, USVString};
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use crate::dom::document::Document;
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use crate::dom::domtokenlist::DOMTokenList;
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use crate::dom::element::{referrer_policy_for_element, Element};
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use crate::dom::element::{AttributeMutation, Element};
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use crate::dom::event::Event;
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use crate::dom::eventtarget::EventTarget;
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use crate::dom::globalscope::GlobalScope;
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use crate::dom::htmlareaelement::HTMLAreaElement;
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use crate::dom::htmlelement::HTMLElement;
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use crate::dom::htmlformelement::HTMLFormElement;
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use crate::dom::htmlimageelement::HTMLImageElement;
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use crate::dom::mouseevent::MouseEvent;
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use crate::dom::node::{document_from_node, Node};
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use crate::dom::node::{document_from_node, BindContext, Node};
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use crate::dom::urlhelper::UrlHelper;
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use crate::dom::virtualmethods::VirtualMethods;
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use crate::task_source::TaskSource;
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use crate::links::{follow_hyperlink, LinkRelations};
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#[dom_struct]
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pub struct HTMLAnchorElement {
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htmlelement: HTMLElement,
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rel_list: MutNullableDom<DOMTokenList>,
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#[no_trace]
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relations: Cell<LinkRelations>,
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#[no_trace]
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url: DomRefCell<Option<ServoUrl>>,
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}
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@ -57,6 +55,7 @@ impl HTMLAnchorElement {
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HTMLAnchorElement {
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htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
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rel_list: Default::default(),
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relations: Cell::new(LinkRelations::empty()),
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url: DomRefCell::new(None),
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}
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}
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@ -121,6 +120,27 @@ impl VirtualMethods for HTMLAnchorElement {
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.parse_plain_attribute(name, value),
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}
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}
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fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
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self.super_type().unwrap().attribute_mutated(attr, mutation);
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match *attr.local_name() {
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local_name!("rel") | local_name!("rev") => {
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self.relations
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.set(LinkRelations::for_element(self.upcast()));
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},
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_ => {},
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}
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}
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fn bind_to_tree(&self, context: &BindContext) {
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if let Some(s) = self.super_type() {
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s.bind_to_tree(context);
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}
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self.relations
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.set(LinkRelations::for_element(self.upcast()));
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}
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}
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impl HTMLAnchorElementMethods for HTMLAnchorElement {
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@ -580,153 +600,6 @@ impl Activatable for HTMLAnchorElement {
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// Step 2.
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//TODO: Download the link is `download` attribute is set.
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follow_hyperlink(element, ismap_suffix);
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follow_hyperlink(element, self.relations.get(), ismap_suffix);
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}
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}
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/// <https://html.spec.whatwg.org/multipage/#get-an-element's-target>
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pub fn get_element_target(subject: &Element) -> Option<DOMString> {
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if !(subject.is::<HTMLAreaElement>() ||
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subject.is::<HTMLAnchorElement>() ||
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subject.is::<HTMLFormElement>())
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{
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return None;
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}
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if subject.has_attribute(&local_name!("target")) {
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return Some(subject.get_string_attribute(&local_name!("target")));
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}
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let doc = document_from_node(subject).base_element();
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match doc {
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Some(doc) => {
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let element = doc.upcast::<Element>();
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if element.has_attribute(&local_name!("target")) {
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Some(element.get_string_attribute(&local_name!("target")))
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} else {
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None
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}
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},
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None => None,
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}
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}
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/// <https://html.spec.whatwg.org/multipage/#get-an-element's-noopener>
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pub fn get_element_noopener(subject: &Element, target_attribute_value: Option<DOMString>) -> bool {
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if !(subject.is::<HTMLAreaElement>() ||
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subject.is::<HTMLAnchorElement>() ||
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subject.is::<HTMLFormElement>())
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{
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return false;
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}
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let target_is_blank = target_attribute_value
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.as_ref()
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.is_some_and(|target| target.to_lowercase() == "_blank");
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let link_types = match subject.get_attribute(&ns!(), &local_name!("rel")) {
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Some(rel) => rel.Value(),
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None => return target_is_blank,
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};
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link_types.contains("noreferrer") ||
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link_types.contains("noopener") ||
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(!link_types.contains("opener") && target_is_blank)
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}
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/// <https://html.spec.whatwg.org/multipage/#following-hyperlinks-2>
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pub fn follow_hyperlink(subject: &Element, hyperlink_suffix: Option<String>) {
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// Step 1.
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if subject.cannot_navigate() {
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return;
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}
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// Step 2, done in Step 7.
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let document = document_from_node(subject);
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let window = document.window();
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// Step 3: source browsing context.
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let source = document.browsing_context().unwrap();
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// Step 4-5: target attribute.
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let target_attribute_value =
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if subject.is::<HTMLAreaElement>() || subject.is::<HTMLAnchorElement>() {
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get_element_target(subject)
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} else {
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None
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};
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// Step 6.
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let noopener = get_element_noopener(subject, target_attribute_value.clone());
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// Step 7.
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let (maybe_chosen, replace) = match target_attribute_value {
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Some(name) => {
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let (maybe_chosen, new) = source.choose_browsing_context(name, noopener);
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let replace = if new {
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HistoryEntryReplacement::Enabled
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} else {
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HistoryEntryReplacement::Disabled
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};
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(maybe_chosen, replace)
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},
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None => (
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Some(window.window_proxy()),
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HistoryEntryReplacement::Disabled,
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),
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};
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// Step 8.
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let chosen = match maybe_chosen {
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Some(proxy) => proxy,
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None => return,
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};
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if let Some(target_document) = chosen.document() {
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let target_window = target_document.window();
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// Step 9, dis-owning target's opener, if necessary
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// will have been done as part of Step 7 above
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// in choose_browsing_context/create_auxiliary_browsing_context.
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// Step 10, 11. TODO: if parsing the URL failed, navigate to error page.
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let attribute = subject.get_attribute(&ns!(), &local_name!("href")).unwrap();
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let mut href = attribute.Value();
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// Step 11: append a hyperlink suffix.
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// https://www.w3.org/Bugs/Public/show_bug.cgi?id=28925
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if let Some(suffix) = hyperlink_suffix {
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href.push_str(&suffix);
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}
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let url = match document.base_url().join(&href) {
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Ok(url) => url,
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Err(_) => return,
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};
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// Step 12.
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let referrer_policy = referrer_policy_for_element(subject);
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// Step 13
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let referrer = match subject.get_attribute(&ns!(), &local_name!("rel")) {
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Some(ref link_types) if link_types.Value().contains("noreferrer") => {
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Referrer::NoReferrer
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},
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_ => target_window.upcast::<GlobalScope>().get_referrer(),
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};
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// Step 14
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let pipeline_id = target_window.upcast::<GlobalScope>().pipeline_id();
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let secure = target_window.upcast::<GlobalScope>().is_secure_context();
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let load_data = LoadData::new(
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LoadOrigin::Script(document.origin().immutable().clone()),
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url,
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Some(pipeline_id),
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referrer,
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referrer_policy,
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Some(secure),
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);
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let target = Trusted::new(target_window);
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let task = task!(navigate_follow_hyperlink: move || {
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debug!("following hyperlink to {}", load_data.url);
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target.root().load_url(replace, false, load_data);
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});
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target_window
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.task_manager()
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.dom_manipulation_task_source()
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.queue(task, target_window.upcast())
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.unwrap();
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};
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}
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