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servo/components/script/dom/document.rs
Fernando Jiménez Moreno db044bdbef Set navigation start value according to navigation timing spec
2017-07-18 17:42:14 +02:00

4074 lines
159 KiB
Rust
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/* 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 cookie_rs;
use core::nonzero::NonZero;
use devtools_traits::ScriptToDevtoolsControlMsg;
use document_loader::{DocumentLoader, LoadType};
use dom::activation::{ActivationSource, synthetic_click_activation};
use dom::attr::Attr;
use dom::beforeunloadevent::BeforeUnloadEvent;
use dom::bindings::callback::ExceptionHandling;
use dom::bindings::cell::DOMRefCell;
use dom::bindings::codegen::Bindings::DOMRectBinding::DOMRectMethods;
use dom::bindings::codegen::Bindings::DocumentBinding;
use dom::bindings::codegen::Bindings::DocumentBinding::{DocumentMethods, DocumentReadyState, ElementCreationOptions};
use dom::bindings::codegen::Bindings::ElementBinding::ElementMethods;
use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
use dom::bindings::codegen::Bindings::EventHandlerBinding::OnErrorEventHandlerNonNull;
use dom::bindings::codegen::Bindings::HTMLIFrameElementBinding::HTMLIFrameElementBinding::HTMLIFrameElementMethods;
use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
use dom::bindings::codegen::Bindings::NodeFilterBinding::NodeFilter;
use dom::bindings::codegen::Bindings::PerformanceBinding::PerformanceMethods;
use dom::bindings::codegen::Bindings::TouchBinding::TouchMethods;
use dom::bindings::codegen::Bindings::WindowBinding::{FrameRequestCallback, ScrollBehavior, WindowMethods};
use dom::bindings::codegen::UnionTypes::NodeOrString;
use dom::bindings::error::{Error, ErrorResult, Fallible};
use dom::bindings::inheritance::{Castable, ElementTypeId, HTMLElementTypeId, NodeTypeId};
use dom::bindings::js::{JS, LayoutJS, MutNullableJS, Root};
use dom::bindings::js::RootedReference;
use dom::bindings::num::Finite;
use dom::bindings::refcounted::{Trusted, TrustedPromise};
use dom::bindings::reflector::{DomObject, reflect_dom_object};
use dom::bindings::str::{DOMString, USVString};
use dom::bindings::xmlname::{namespace_from_domstring, validate_and_extract, xml_name_type};
use dom::bindings::xmlname::XMLName::InvalidXMLName;
use dom::closeevent::CloseEvent;
use dom::comment::Comment;
use dom::customelementregistry::CustomElementDefinition;
use dom::customevent::CustomEvent;
use dom::documentfragment::DocumentFragment;
use dom::documenttype::DocumentType;
use dom::domimplementation::DOMImplementation;
use dom::element::{Element, ElementCreator, ElementPerformFullscreenEnter, ElementPerformFullscreenExit};
use dom::element::CustomElementCreationMode;
use dom::errorevent::ErrorEvent;
use dom::event::{Event, EventBubbles, EventCancelable, EventDefault, EventStatus};
use dom::eventtarget::EventTarget;
use dom::focusevent::FocusEvent;
use dom::forcetouchevent::ForceTouchEvent;
use dom::globalscope::GlobalScope;
use dom::hashchangeevent::HashChangeEvent;
use dom::htmlanchorelement::HTMLAnchorElement;
use dom::htmlappletelement::HTMLAppletElement;
use dom::htmlareaelement::HTMLAreaElement;
use dom::htmlbaseelement::HTMLBaseElement;
use dom::htmlbodyelement::HTMLBodyElement;
use dom::htmlcollection::{CollectionFilter, HTMLCollection};
use dom::htmlelement::HTMLElement;
use dom::htmlembedelement::HTMLEmbedElement;
use dom::htmlformelement::{FormControl, FormControlElementHelpers, HTMLFormElement};
use dom::htmlheadelement::HTMLHeadElement;
use dom::htmlhtmlelement::HTMLHtmlElement;
use dom::htmliframeelement::HTMLIFrameElement;
use dom::htmlimageelement::HTMLImageElement;
use dom::htmlscriptelement::{HTMLScriptElement, ScriptResult};
use dom::htmltitleelement::HTMLTitleElement;
use dom::keyboardevent::KeyboardEvent;
use dom::location::Location;
use dom::messageevent::MessageEvent;
use dom::mouseevent::MouseEvent;
use dom::node::{self, CloneChildrenFlag, Node, NodeDamage, window_from_node, IS_IN_DOC, LayoutNodeHelpers};
use dom::node::VecPreOrderInsertionHelper;
use dom::nodeiterator::NodeIterator;
use dom::nodelist::NodeList;
use dom::pagetransitionevent::PageTransitionEvent;
use dom::popstateevent::PopStateEvent;
use dom::processinginstruction::ProcessingInstruction;
use dom::progressevent::ProgressEvent;
use dom::promise::Promise;
use dom::range::Range;
use dom::servoparser::ServoParser;
use dom::storageevent::StorageEvent;
use dom::stylesheetlist::StyleSheetList;
use dom::text::Text;
use dom::touch::Touch;
use dom::touchevent::TouchEvent;
use dom::touchlist::TouchList;
use dom::treewalker::TreeWalker;
use dom::uievent::UIEvent;
use dom::webglcontextevent::WebGLContextEvent;
use dom::window::{ReflowReason, Window};
use dom::windowproxy::WindowProxy;
use dom_struct::dom_struct;
use encoding::EncodingRef;
use encoding::all::UTF_8;
use euclid::{Point2D, Vector2D};
use html5ever::{LocalName, QualName};
use hyper::header::{Header, SetCookie};
use hyper_serde::Serde;
use ipc_channel::ipc::{self, IpcSender};
use js::jsapi::{JSContext, JSObject, JSRuntime};
use js::jsapi::JS_GetRuntime;
use msg::constellation_msg::{ALT, CONTROL, SHIFT, SUPER};
use msg::constellation_msg::{BrowsingContextId, Key, KeyModifiers, KeyState, TopLevelBrowsingContextId};
use net_traits::{FetchResponseMsg, IpcSend, ReferrerPolicy};
use net_traits::CookieSource::NonHTTP;
use net_traits::CoreResourceMsg::{GetCookiesForUrl, SetCookiesForUrl};
use net_traits::pub_domains::is_pub_domain;
use net_traits::request::RequestInit;
use net_traits::response::HttpsState;
use num_traits::ToPrimitive;
use script_layout_interface::message::{Msg, ReflowQueryType};
use script_runtime::{CommonScriptMsg, ScriptThreadEventCategory};
use script_thread::{MainThreadScriptMsg, Runnable, ScriptThread};
use script_traits::{AnimationState, CompositorEvent, DocumentActivity};
use script_traits::{MouseButton, MouseEventType, MozBrowserEvent};
use script_traits::{MsDuration, ScriptMsg as ConstellationMsg, TouchpadPressurePhase};
use script_traits::{TouchEventType, TouchId};
use script_traits::UntrustedNodeAddress;
use servo_atoms::Atom;
use servo_config::prefs::PREFS;
use servo_url::{ImmutableOrigin, MutableOrigin, ServoUrl};
use std::ascii::AsciiExt;
use std::borrow::ToOwned;
use std::cell::{Cell, Ref, RefMut};
use std::collections::{HashMap, HashSet, VecDeque};
use std::collections::hash_map::Entry::{Occupied, Vacant};
use std::default::Default;
use std::iter::once;
use std::mem;
use std::rc::Rc;
use std::time::{Duration, Instant};
use style::attr::AttrValue;
use style::context::{QuirksMode, ReflowGoal};
use style::invalidation::element::restyle_hints::{RestyleHint, RESTYLE_SELF, RESTYLE_STYLE_ATTRIBUTE};
use style::selector_parser::{RestyleDamage, Snapshot};
use style::shared_lock::SharedRwLock as StyleSharedRwLock;
use style::str::{HTML_SPACE_CHARACTERS, split_html_space_chars, str_join};
use style::stylearc::Arc;
use style::stylesheets::Stylesheet;
use task_source::TaskSource;
use time;
use timers::OneshotTimerCallback;
use url::Host;
use url::percent_encoding::percent_decode;
use webrender_api::ClipId;
/// The number of times we are allowed to see spurious `requestAnimationFrame()` calls before
/// falling back to fake ones.
///
/// A spurious `requestAnimationFrame()` call is defined as one that does not change the DOM.
const SPURIOUS_ANIMATION_FRAME_THRESHOLD: u8 = 5;
/// The amount of time between fake `requestAnimationFrame()`s.
const FAKE_REQUEST_ANIMATION_FRAME_DELAY: u64 = 16;
pub enum TouchEventResult {
Processed(bool),
Forwarded,
}
#[derive(Clone, Copy, Debug, HeapSizeOf, JSTraceable, PartialEq)]
pub enum IsHTMLDocument {
HTMLDocument,
NonHTMLDocument,
}
#[derive(JSTraceable, HeapSizeOf)]
#[must_root]
pub struct StylesheetInDocument {
pub node: JS<Node>,
#[ignore_heap_size_of = "Arc"]
pub stylesheet: Arc<Stylesheet>,
}
#[derive(Debug, HeapSizeOf)]
pub struct PendingRestyle {
/// If this element had a state or attribute change since the last restyle, track
/// the original condition of the element.
pub snapshot: Option<Snapshot>,
/// Any explicit restyles hints that have been accumulated for this element.
pub hint: RestyleHint,
/// Any explicit restyles damage that have been accumulated for this element.
pub damage: RestyleDamage,
}
impl PendingRestyle {
pub fn new() -> Self {
PendingRestyle {
snapshot: None,
hint: RestyleHint::empty(),
damage: RestyleDamage::empty(),
}
}
}
/// https://dom.spec.whatwg.org/#document
#[dom_struct]
pub struct Document {
node: Node,
window: JS<Window>,
implementation: MutNullableJS<DOMImplementation>,
location: MutNullableJS<Location>,
content_type: DOMString,
last_modified: Option<String>,
encoding: Cell<EncodingRef>,
has_browsing_context: bool,
is_html_document: bool,
activity: Cell<DocumentActivity>,
url: DOMRefCell<ServoUrl>,
#[ignore_heap_size_of = "defined in selectors"]
quirks_mode: Cell<QuirksMode>,
/// Caches for the getElement methods
id_map: DOMRefCell<HashMap<Atom, Vec<JS<Element>>>>,
tag_map: DOMRefCell<HashMap<LocalName, JS<HTMLCollection>>>,
tagns_map: DOMRefCell<HashMap<QualName, JS<HTMLCollection>>>,
classes_map: DOMRefCell<HashMap<Vec<Atom>, JS<HTMLCollection>>>,
images: MutNullableJS<HTMLCollection>,
embeds: MutNullableJS<HTMLCollection>,
links: MutNullableJS<HTMLCollection>,
forms: MutNullableJS<HTMLCollection>,
scripts: MutNullableJS<HTMLCollection>,
anchors: MutNullableJS<HTMLCollection>,
applets: MutNullableJS<HTMLCollection>,
/// Lock use for style attributes and author-origin stylesheet objects in this document.
/// Can be acquired once for accessing many objects.
style_shared_lock: StyleSharedRwLock,
/// List of stylesheets associated with nodes in this document. |None| if the list needs to be refreshed.
stylesheets: DOMRefCell<Option<Vec<StylesheetInDocument>>>,
/// Whether the list of stylesheets has changed since the last reflow was triggered.
stylesheets_changed_since_reflow: Cell<bool>,
stylesheet_list: MutNullableJS<StyleSheetList>,
ready_state: Cell<DocumentReadyState>,
/// Whether the DOMContentLoaded event has already been dispatched.
domcontentloaded_dispatched: Cell<bool>,
/// The element that has most recently requested focus for itself.
possibly_focused: MutNullableJS<Element>,
/// The element that currently has the document focus context.
focused: MutNullableJS<Element>,
/// The script element that is currently executing.
current_script: MutNullableJS<HTMLScriptElement>,
/// https://html.spec.whatwg.org/multipage/#pending-parsing-blocking-script
pending_parsing_blocking_script: DOMRefCell<Option<PendingScript>>,
/// Number of stylesheets that block executing the next parser-inserted script
script_blocking_stylesheets_count: Cell<u32>,
/// https://html.spec.whatwg.org/multipage/#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing
deferred_scripts: PendingInOrderScriptVec,
/// https://html.spec.whatwg.org/multipage/#list-of-scripts-that-will-execute-in-order-as-soon-as-possible
asap_in_order_scripts_list: PendingInOrderScriptVec,
/// https://html.spec.whatwg.org/multipage/#set-of-scripts-that-will-execute-as-soon-as-possible
asap_scripts_set: DOMRefCell<Vec<JS<HTMLScriptElement>>>,
/// https://html.spec.whatwg.org/multipage/#concept-n-noscript
/// True if scripting is enabled for all scripts in this document
scripting_enabled: bool,
/// https://html.spec.whatwg.org/multipage/#animation-frame-callback-identifier
/// Current identifier of animation frame callback
animation_frame_ident: Cell<u32>,
/// https://html.spec.whatwg.org/multipage/#list-of-animation-frame-callbacks
/// List of animation frame callbacks
animation_frame_list: DOMRefCell<Vec<(u32, Option<AnimationFrameCallback>)>>,
/// Whether we're in the process of running animation callbacks.
///
/// Tracking this is not necessary for correctness. Instead, it is an optimization to avoid
/// sending needless `ChangeRunningAnimationsState` messages to the compositor.
running_animation_callbacks: Cell<bool>,
/// Tracks all outstanding loads related to this document.
loader: DOMRefCell<DocumentLoader>,
/// The current active HTML parser, to allow resuming after interruptions.
current_parser: MutNullableJS<ServoParser>,
/// When we should kick off a reflow. This happens during parsing.
reflow_timeout: Cell<Option<u64>>,
/// The cached first `base` element with an `href` attribute.
base_element: MutNullableJS<HTMLBaseElement>,
/// This field is set to the document itself for inert documents.
/// https://html.spec.whatwg.org/multipage/#appropriate-template-contents-owner-document
appropriate_template_contents_owner_document: MutNullableJS<Document>,
/// Information on elements needing restyle to ship over to the layout thread when the
/// time comes.
pending_restyles: DOMRefCell<HashMap<JS<Element>, PendingRestyle>>,
/// This flag will be true if layout suppressed a reflow attempt that was
/// needed in order for the page to be painted.
needs_paint: Cell<bool>,
/// http://w3c.github.io/touch-events/#dfn-active-touch-point
active_touch_points: DOMRefCell<Vec<JS<Touch>>>,
/// Navigation Timing properties:
/// https://w3c.github.io/navigation-timing/#sec-PerformanceNavigationTiming
dom_loading: Cell<u64>,
dom_interactive: Cell<u64>,
dom_content_loaded_event_start: Cell<u64>,
dom_content_loaded_event_end: Cell<u64>,
dom_complete: Cell<u64>,
load_event_start: Cell<u64>,
load_event_end: Cell<u64>,
/// https://html.spec.whatwg.org/multipage/#concept-document-https-state
https_state: Cell<HttpsState>,
touchpad_pressure_phase: Cell<TouchpadPressurePhase>,
/// The document's origin.
origin: MutableOrigin,
/// https://w3c.github.io/webappsec-referrer-policy/#referrer-policy-states
referrer_policy: Cell<Option<ReferrerPolicy>>,
/// https://html.spec.whatwg.org/multipage/#dom-document-referrer
referrer: Option<String>,
/// https://html.spec.whatwg.org/multipage/#target-element
target_element: MutNullableJS<Element>,
/// https://w3c.github.io/uievents/#event-type-dblclick
#[ignore_heap_size_of = "Defined in std"]
last_click_info: DOMRefCell<Option<(Instant, Point2D<f32>)>>,
/// https://html.spec.whatwg.org/multipage/#ignore-destructive-writes-counter
ignore_destructive_writes_counter: Cell<u32>,
/// The number of spurious `requestAnimationFrame()` requests we've received.
///
/// A rAF request is considered spurious if nothing was actually reflowed.
spurious_animation_frames: Cell<u8>,
/// Track the total number of elements in this DOM's tree.
/// This is sent to the layout thread every time a reflow is done;
/// layout uses this to determine if the gains from parallel layout will be worth the overhead.
///
/// See also: https://github.com/servo/servo/issues/10110
dom_count: Cell<u32>,
/// Entry node for fullscreen.
fullscreen_element: MutNullableJS<Element>,
/// Map from ID to set of form control elements that have that ID as
/// their 'form' content attribute. Used to reset form controls
/// whenever any element with the same ID as the form attribute
/// is inserted or removed from the document.
/// See https://html.spec.whatwg.org/multipage/#form-owner
form_id_listener_map: DOMRefCell<HashMap<Atom, HashSet<JS<Element>>>>,
}
#[derive(JSTraceable, HeapSizeOf)]
struct ImagesFilter;
impl CollectionFilter for ImagesFilter {
fn filter(&self, elem: &Element, _root: &Node) -> bool {
elem.is::<HTMLImageElement>()
}
}
#[derive(JSTraceable, HeapSizeOf)]
struct EmbedsFilter;
impl CollectionFilter for EmbedsFilter {
fn filter(&self, elem: &Element, _root: &Node) -> bool {
elem.is::<HTMLEmbedElement>()
}
}
#[derive(JSTraceable, HeapSizeOf)]
struct LinksFilter;
impl CollectionFilter for LinksFilter {
fn filter(&self, elem: &Element, _root: &Node) -> bool {
(elem.is::<HTMLAnchorElement>() || elem.is::<HTMLAreaElement>()) &&
elem.has_attribute(&local_name!("href"))
}
}
#[derive(JSTraceable, HeapSizeOf)]
struct FormsFilter;
impl CollectionFilter for FormsFilter {
fn filter(&self, elem: &Element, _root: &Node) -> bool {
elem.is::<HTMLFormElement>()
}
}
#[derive(JSTraceable, HeapSizeOf)]
struct ScriptsFilter;
impl CollectionFilter for ScriptsFilter {
fn filter(&self, elem: &Element, _root: &Node) -> bool {
elem.is::<HTMLScriptElement>()
}
}
#[derive(JSTraceable, HeapSizeOf)]
struct AnchorsFilter;
impl CollectionFilter for AnchorsFilter {
fn filter(&self, elem: &Element, _root: &Node) -> bool {
elem.is::<HTMLAnchorElement>() && elem.has_attribute(&local_name!("href"))
}
}
#[derive(JSTraceable, HeapSizeOf)]
struct AppletsFilter;
impl CollectionFilter for AppletsFilter {
fn filter(&self, elem: &Element, _root: &Node) -> bool {
elem.is::<HTMLAppletElement>()
}
}
impl Document {
#[inline]
pub fn loader(&self) -> Ref<DocumentLoader> {
self.loader.borrow()
}
#[inline]
pub fn mut_loader(&self) -> RefMut<DocumentLoader> {
self.loader.borrow_mut()
}
#[inline]
pub fn has_browsing_context(&self) -> bool { self.has_browsing_context }
/// https://html.spec.whatwg.org/multipage/#concept-document-bc
#[inline]
pub fn browsing_context(&self) -> Option<Root<WindowProxy>> {
if self.has_browsing_context {
self.window.undiscarded_window_proxy()
} else {
None
}
}
#[inline]
pub fn window(&self) -> &Window {
&*self.window
}
#[inline]
pub fn is_html_document(&self) -> bool {
self.is_html_document
}
pub fn set_https_state(&self, https_state: HttpsState) {
self.https_state.set(https_state);
self.trigger_mozbrowser_event(MozBrowserEvent::SecurityChange(https_state));
}
pub fn is_fully_active(&self) -> bool {
self.activity.get() == DocumentActivity::FullyActive
}
pub fn is_active(&self) -> bool {
self.activity.get() != DocumentActivity::Inactive
}
pub fn set_activity(&self, activity: DocumentActivity) {
// This function should only be called on documents with a browsing context
assert!(self.has_browsing_context);
// Set the document's activity level, reflow if necessary, and suspend or resume timers.
if activity != self.activity.get() {
self.activity.set(activity);
if activity == DocumentActivity::FullyActive {
self.title_changed();
self.dirty_all_nodes();
self.window().reflow(
ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::CachedPageNeededReflow
);
self.window().resume();
} else {
self.window().suspend();
}
}
}
pub fn origin(&self) -> &MutableOrigin {
&self.origin
}
// https://dom.spec.whatwg.org/#concept-document-url
pub fn url(&self) -> ServoUrl {
self.url.borrow().clone()
}
pub fn set_url(&self, url: ServoUrl) {
*self.url.borrow_mut() = url;
}
// https://html.spec.whatwg.org/multipage/#fallback-base-url
pub fn fallback_base_url(&self) -> ServoUrl {
// Step 1: iframe srcdoc (#4767).
// Step 2: about:blank with a creator browsing context.
// Step 3.
self.url()
}
// https://html.spec.whatwg.org/multipage/#document-base-url
pub fn base_url(&self) -> ServoUrl {
match self.base_element() {
// Step 1.
None => self.fallback_base_url(),
// Step 2.
Some(base) => base.frozen_base_url(),
}
}
pub fn needs_paint(&self) -> bool {
self.needs_paint.get()
}
pub fn needs_reflow(&self) -> bool {
// FIXME: This should check the dirty bit on the document,
// not the document element. Needs some layout changes to make
// that workable.
self.stylesheets_changed_since_reflow.get() ||
match self.GetDocumentElement() {
Some(root) => {
root.upcast::<Node>().has_dirty_descendants() ||
!self.pending_restyles.borrow().is_empty() ||
self.needs_paint()
}
None => false,
}
}
/// Returns the first `base` element in the DOM that has an `href` attribute.
pub fn base_element(&self) -> Option<Root<HTMLBaseElement>> {
self.base_element.get()
}
/// Refresh the cached first base element in the DOM.
/// https://github.com/w3c/web-platform-tests/issues/2122
pub fn refresh_base_element(&self) {
let base = self.upcast::<Node>()
.traverse_preorder()
.filter_map(Root::downcast::<HTMLBaseElement>)
.find(|element| element.upcast::<Element>().has_attribute(&local_name!("href")));
self.base_element.set(base.r());
}
pub fn dom_count(&self) -> u32 {
self.dom_count.get()
}
/// This is called by `bind_to_tree` when a node is added to the DOM.
/// The internal count is used by layout to determine whether to be sequential or parallel.
/// (it's sequential for small DOMs)
pub fn increment_dom_count(&self) {
self.dom_count.set(self.dom_count.get() + 1);
}
/// This is called by `unbind_from_tree` when a node is removed from the DOM.
pub fn decrement_dom_count(&self) {
self.dom_count.set(self.dom_count.get() - 1);
}
pub fn quirks_mode(&self) -> QuirksMode {
self.quirks_mode.get()
}
pub fn set_quirks_mode(&self, mode: QuirksMode) {
self.quirks_mode.set(mode);
if mode == QuirksMode::Quirks {
self.window.layout_chan().send(Msg::SetQuirksMode(mode)).unwrap();
}
}
pub fn encoding(&self) -> EncodingRef {
self.encoding.get()
}
pub fn set_encoding(&self, encoding: EncodingRef) {
self.encoding.set(encoding);
}
pub fn content_and_heritage_changed(&self, node: &Node, damage: NodeDamage) {
node.dirty(damage);
}
/// Reflows and disarms the timer if the reflow timer has expired.
pub fn reflow_if_reflow_timer_expired(&self) {
if let Some(reflow_timeout) = self.reflow_timeout.get() {
if time::precise_time_ns() < reflow_timeout {
return;
}
self.reflow_timeout.set(None);
self.window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::RefreshTick);
}
}
/// Schedules a reflow to be kicked off at the given `timeout` (in `time::precise_time_ns()`
/// units). This reflow happens even if the event loop is busy. This is used to display initial
/// page content during parsing.
pub fn set_reflow_timeout(&self, timeout: u64) {
if let Some(existing_timeout) = self.reflow_timeout.get() {
if existing_timeout < timeout {
return;
}
}
self.reflow_timeout.set(Some(timeout))
}
/// Remove any existing association between the provided id and any elements in this document.
pub fn unregister_named_element(&self, to_unregister: &Element, id: Atom) {
debug!("Removing named element from document {:p}: {:p} id={}",
self,
to_unregister,
id);
// Limit the scope of the borrow because id_map might be borrowed again by
// GetElementById through the following sequence of calls
// reset_form_owner_for_listeners -> reset_form_owner -> GetElementById
{
let mut id_map = self.id_map.borrow_mut();
let is_empty = match id_map.get_mut(&id) {
None => false,
Some(elements) => {
let position = elements.iter()
.position(|element| &**element == to_unregister)
.expect("This element should be in registered.");
elements.remove(position);
elements.is_empty()
}
};
if is_empty {
id_map.remove(&id);
}
}
self.reset_form_owner_for_listeners(&id);
}
/// Associate an element present in this document with the provided id.
pub fn register_named_element(&self, element: &Element, id: Atom) {
debug!("Adding named element to document {:p}: {:p} id={}",
self,
element,
id);
assert!(element.upcast::<Node>().is_in_doc());
assert!(!id.is_empty());
let root = self.GetDocumentElement()
.expect("The element is in the document, so there must be a document \
element.");
// Limit the scope of the borrow because id_map might be borrowed again by
// GetElementById through the following sequence of calls
// reset_form_owner_for_listeners -> reset_form_owner -> GetElementById
{
let mut id_map = self.id_map.borrow_mut();
let mut elements = id_map.entry(id.clone()).or_insert(Vec::new());
elements.insert_pre_order(element, root.r().upcast::<Node>());
}
self.reset_form_owner_for_listeners(&id);
}
pub fn register_form_id_listener<T: ?Sized + FormControl>(&self, id: DOMString, listener: &T) {
let mut map = self.form_id_listener_map.borrow_mut();
let listener = listener.to_element();
let mut set = map.entry(Atom::from(id)).or_insert(HashSet::new());
set.insert(JS::from_ref(listener));
}
pub fn unregister_form_id_listener<T: ?Sized + FormControl>(&self, id: DOMString, listener: &T) {
let mut map = self.form_id_listener_map.borrow_mut();
if let Occupied(mut entry) = map.entry(Atom::from(id)) {
entry.get_mut().remove(&JS::from_ref(listener.to_element()));
if entry.get().is_empty() {
entry.remove();
}
}
}
/// Attempt to find a named element in this page's document.
/// https://html.spec.whatwg.org/multipage/#the-indicated-part-of-the-document
pub fn find_fragment_node(&self, fragid: &str) -> Option<Root<Element>> {
// Step 1 is not handled here; the fragid is already obtained by the calling function
// Step 2: Simply use None to indicate the top of the document.
// Step 3 & 4
percent_decode(fragid.as_bytes()).decode_utf8().ok()
// Step 5
.and_then(|decoded_fragid| self.get_element_by_id(&Atom::from(decoded_fragid)))
// Step 6
.or_else(|| self.get_anchor_by_name(fragid))
// Step 7 & 8
}
/// Scroll to the target element, and when we do not find a target
/// and the fragment is empty or "top", scroll to the top.
/// https://html.spec.whatwg.org/multipage/#scroll-to-the-fragment-identifier
pub fn check_and_scroll_fragment(&self, fragment: &str) {
let target = self.find_fragment_node(fragment);
// Step 1
self.set_target_element(target.r());
let point = target.r().map(|element| {
// FIXME(#8275, pcwalton): This is pretty bogus when multiple layers are involved.
// Really what needs to happen is that this needs to go through layout to ask which
// layer the element belongs to, and have it send the scroll message to the
// compositor.
let rect = element.upcast::<Node>().bounding_content_box_or_zero();
// In order to align with element edges, we snap to unscaled pixel boundaries, since
// the paint thread currently does the same for drawing elements. This is important
// for pages that require pixel perfect scroll positioning for proper display
// (like Acid2). Since we don't have the device pixel ratio here, this might not be
// accurate, but should work as long as the ratio is a whole number. Once #8275 is
// fixed this should actually take into account the real device pixel ratio.
(rect.origin.x.to_nearest_px() as f32, rect.origin.y.to_nearest_px() as f32)
}).or_else(|| if fragment.is_empty() || fragment.eq_ignore_ascii_case("top") {
// FIXME(stshine): this should be the origin of the stacking context space,
// which may differ under the influence of writing mode.
Some((0.0, 0.0))
} else {
None
});
if let Some((x, y)) = point {
// Step 3
let global_scope = self.window.upcast::<GlobalScope>();
let webrender_pipeline_id = global_scope.pipeline_id().to_webrender();
self.window.update_viewport_for_scroll(x, y);
self.window.perform_a_scroll(x,
y,
ClipId::root_scroll_node(webrender_pipeline_id),
ScrollBehavior::Instant,
target.r());
}
}
fn get_anchor_by_name(&self, name: &str) -> Option<Root<Element>> {
let check_anchor = |node: &HTMLAnchorElement| {
let elem = node.upcast::<Element>();
elem.get_attribute(&ns!(), &local_name!("name"))
.map_or(false, |attr| &**attr.value() == name)
};
let doc_node = self.upcast::<Node>();
doc_node.traverse_preorder()
.filter_map(Root::downcast)
.find(|node| check_anchor(&node))
.map(Root::upcast)
}
// https://html.spec.whatwg.org/multipage/#current-document-readiness
pub fn set_ready_state(&self, state: DocumentReadyState) {
match state {
DocumentReadyState::Loading => {
// https://developer.mozilla.org/en-US/docs/Web/Events/mozbrowserconnected
self.trigger_mozbrowser_event(MozBrowserEvent::Connected);
update_with_current_time_ms(&self.dom_loading);
},
DocumentReadyState::Complete => {
// https://developer.mozilla.org/en-US/docs/Web/Events/mozbrowserloadend
self.trigger_mozbrowser_event(MozBrowserEvent::LoadEnd);
update_with_current_time_ms(&self.dom_complete);
},
DocumentReadyState::Interactive => update_with_current_time_ms(&self.dom_interactive),
};
self.ready_state.set(state);
self.upcast::<EventTarget>().fire_event(atom!("readystatechange"));
}
/// Return whether scripting is enabled or not
pub fn is_scripting_enabled(&self) -> bool {
self.scripting_enabled
}
/// Return the element that currently has focus.
// https://w3c.github.io/uievents/#events-focusevent-doc-focus
pub fn get_focused_element(&self) -> Option<Root<Element>> {
self.focused.get()
}
/// Initiate a new round of checking for elements requesting focus. The last element to call
/// `request_focus` before `commit_focus_transaction` is called will receive focus.
pub fn begin_focus_transaction(&self) {
self.possibly_focused.set(None);
}
/// Request that the given element receive focus once the current transaction is complete.
pub fn request_focus(&self, elem: &Element) {
if elem.is_focusable_area() {
self.possibly_focused.set(Some(elem))
}
}
/// Reassign the focus context to the element that last requested focus during this
/// transaction, or none if no elements requested it.
pub fn commit_focus_transaction(&self, focus_type: FocusType) {
if self.focused == self.possibly_focused.get().r() {
return
}
if let Some(ref elem) = self.focused.get() {
let node = elem.upcast::<Node>();
elem.set_focus_state(false);
// FIXME: pass appropriate relatedTarget
self.fire_focus_event(FocusEventType::Blur, node, None);
}
self.focused.set(self.possibly_focused.get().r());
if let Some(ref elem) = self.focused.get() {
elem.set_focus_state(true);
let node = elem.upcast::<Node>();
// FIXME: pass appropriate relatedTarget
self.fire_focus_event(FocusEventType::Focus, node, None);
// Update the focus state for all elements in the focus chain.
// https://html.spec.whatwg.org/multipage/#focus-chain
if focus_type == FocusType::Element {
let global_scope = self.window.upcast::<GlobalScope>();
let event = ConstellationMsg::Focus(global_scope.pipeline_id());
global_scope.constellation_chan().send(event).unwrap();
}
}
}
/// Handles any updates when the document's title has changed.
pub fn title_changed(&self) {
if self.browsing_context().is_some() {
// https://developer.mozilla.org/en-US/docs/Web/Events/mozbrowsertitlechange
self.trigger_mozbrowser_event(MozBrowserEvent::TitleChange(String::from(self.Title())));
self.send_title_to_compositor();
}
}
/// Sends this document's title to the compositor.
pub fn send_title_to_compositor(&self) {
let window = self.window();
let global_scope = window.upcast::<GlobalScope>();
global_scope
.constellation_chan()
.send(ConstellationMsg::SetTitle(global_scope.pipeline_id(),
Some(String::from(self.Title()))))
.unwrap();
}
pub fn dirty_all_nodes(&self) {
let root = self.upcast::<Node>();
for node in root.traverse_preorder() {
node.dirty(NodeDamage::OtherNodeDamage)
}
}
#[allow(unsafe_code)]
pub fn handle_mouse_event(&self,
js_runtime: *mut JSRuntime,
button: MouseButton,
client_point: Point2D<f32>,
mouse_event_type: MouseEventType) {
let mouse_event_type_string = match mouse_event_type {
MouseEventType::Click => "click".to_owned(),
MouseEventType::MouseUp => "mouseup".to_owned(),
MouseEventType::MouseDown => "mousedown".to_owned(),
};
debug!("{}: at {:?}", mouse_event_type_string, client_point);
let node = match self.window.hit_test_query(client_point, false) {
Some(node_address) => {
debug!("node address is {:?}", node_address);
unsafe {
node::from_untrusted_node_address(js_runtime, node_address)
}
},
None => return,
};
let el = match node.downcast::<Element>() {
Some(el) => Root::from_ref(el),
None => {
let parent = node.GetParentNode();
match parent.and_then(Root::downcast::<Element>) {
Some(parent) => parent,
None => return,
}
},
};
// If the target is an iframe, forward the event to the child document.
if let Some(iframe) = el.downcast::<HTMLIFrameElement>() {
if let Some(pipeline_id) = iframe.pipeline_id() {
let rect = iframe.upcast::<Element>().GetBoundingClientRect();
let child_origin = Vector2D::new(rect.X() as f32, rect.Y() as f32);
let child_point = client_point - child_origin;
let event = CompositorEvent::MouseButtonEvent(mouse_event_type, button, child_point);
let event = ConstellationMsg::ForwardEvent(pipeline_id, event);
self.window.upcast::<GlobalScope>().constellation_chan().send(event).unwrap();
}
return;
}
let node = el.upcast::<Node>();
debug!("{} on {:?}", mouse_event_type_string, node.debug_str());
// Prevent click event if form control element is disabled.
if let MouseEventType::Click = mouse_event_type {
if el.click_event_filter_by_disabled_state() {
return;
}
self.begin_focus_transaction();
}
// https://w3c.github.io/uievents/#event-type-click
let client_x = client_point.x as i32;
let client_y = client_point.y as i32;
let click_count = 1;
let event = MouseEvent::new(&self.window,
DOMString::from(mouse_event_type_string),
EventBubbles::Bubbles,
EventCancelable::Cancelable,
Some(&self.window),
click_count,
client_x,
client_y,
client_x,
client_y, // TODO: Get real screen coordinates?
false,
false,
false,
false,
0i16,
None);
let event = event.upcast::<Event>();
// https://w3c.github.io/uievents/#trusted-events
event.set_trusted(true);
// https://html.spec.whatwg.org/multipage/#run-authentic-click-activation-steps
let activatable = el.as_maybe_activatable();
match mouse_event_type {
MouseEventType::Click => el.authentic_click_activation(event),
MouseEventType::MouseDown => {
if let Some(a) = activatable {
a.enter_formal_activation_state();
}
let target = node.upcast();
event.fire(target);
},
MouseEventType::MouseUp => {
if let Some(a) = activatable {
a.exit_formal_activation_state();
}
let target = node.upcast();
event.fire(target);
},
}
if let MouseEventType::Click = mouse_event_type {
self.commit_focus_transaction(FocusType::Element);
self.maybe_fire_dblclick(client_point, node);
}
self.window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::MouseEvent);
}
fn maybe_fire_dblclick(&self, click_pos: Point2D<f32>, target: &Node) {
// https://w3c.github.io/uievents/#event-type-dblclick
let now = Instant::now();
let opt = self.last_click_info.borrow_mut().take();
if let Some((last_time, last_pos)) = opt {
let DBL_CLICK_TIMEOUT = Duration::from_millis(PREFS.get("dom.document.dblclick_timeout").as_u64()
.unwrap_or(300));
let DBL_CLICK_DIST_THRESHOLD = PREFS.get("dom.document.dblclick_dist").as_u64().unwrap_or(1);
// Calculate distance between this click and the previous click.
let line = click_pos - last_pos;
let dist = (line.dot(line) as f64).sqrt();
if now.duration_since(last_time) < DBL_CLICK_TIMEOUT &&
dist < DBL_CLICK_DIST_THRESHOLD as f64 {
// A double click has occurred if this click is within a certain time and dist. of previous click.
let click_count = 2;
let client_x = click_pos.x as i32;
let client_y = click_pos.y as i32;
let event = MouseEvent::new(&self.window,
DOMString::from("dblclick"),
EventBubbles::Bubbles,
EventCancelable::Cancelable,
Some(&self.window),
click_count,
client_x,
client_y,
client_x,
client_y,
false,
false,
false,
false,
0i16,
None);
event.upcast::<Event>().fire(target.upcast());
// When a double click occurs, self.last_click_info is left as None so that a
// third sequential click will not cause another double click.
return;
}
}
// Update last_click_info with the time and position of the click.
*self.last_click_info.borrow_mut() = Some((now, click_pos));
}
#[allow(unsafe_code)]
pub fn handle_touchpad_pressure_event(&self,
js_runtime: *mut JSRuntime,
client_point: Point2D<f32>,
pressure: f32,
phase_now: TouchpadPressurePhase) {
let node = match self.window.hit_test_query(client_point, false) {
Some(node_address) => unsafe {
node::from_untrusted_node_address(js_runtime, node_address)
},
None => return
};
let el = match node.downcast::<Element>() {
Some(el) => Root::from_ref(el),
None => {
let parent = node.GetParentNode();
match parent.and_then(Root::downcast::<Element>) {
Some(parent) => parent,
None => return
}
},
};
// If the target is an iframe, forward the event to the child document.
if let Some(iframe) = el.downcast::<HTMLIFrameElement>() {
if let Some(pipeline_id) = iframe.pipeline_id() {
let rect = iframe.upcast::<Element>().GetBoundingClientRect();
let child_origin = Vector2D::new(rect.X() as f32, rect.Y() as f32);
let child_point = client_point - child_origin;
let event = CompositorEvent::TouchpadPressureEvent(child_point,
pressure,
phase_now);
let event = ConstellationMsg::ForwardEvent(pipeline_id, event);
self.window.upcast::<GlobalScope>().constellation_chan().send(event).unwrap();
}
return;
}
let phase_before = self.touchpad_pressure_phase.get();
self.touchpad_pressure_phase.set(phase_now);
if phase_before == TouchpadPressurePhase::BeforeClick &&
phase_now == TouchpadPressurePhase::BeforeClick {
return;
}
let node = el.upcast::<Node>();
let target = node.upcast();
let force = match phase_now {
TouchpadPressurePhase::BeforeClick => pressure,
TouchpadPressurePhase::AfterFirstClick => 1. + pressure,
TouchpadPressurePhase::AfterSecondClick => 2. + pressure,
};
if phase_now != TouchpadPressurePhase::BeforeClick {
self.fire_forcetouch_event("servomouseforcechanged".to_owned(), target, force);
}
if phase_before != TouchpadPressurePhase::AfterSecondClick &&
phase_now == TouchpadPressurePhase::AfterSecondClick {
self.fire_forcetouch_event("servomouseforcedown".to_owned(), target, force);
}
if phase_before == TouchpadPressurePhase::AfterSecondClick &&
phase_now != TouchpadPressurePhase::AfterSecondClick {
self.fire_forcetouch_event("servomouseforceup".to_owned(), target, force);
}
}
fn fire_forcetouch_event(&self, event_name: String, target: &EventTarget, force: f32) {
let force_event = ForceTouchEvent::new(&self.window,
DOMString::from(event_name),
force);
let event = force_event.upcast::<Event>();
event.fire(target);
}
pub fn fire_mouse_event(&self, client_point: Point2D<f32>, target: &EventTarget, event_name: String) {
let client_x = client_point.x.to_i32().unwrap_or(0);
let client_y = client_point.y.to_i32().unwrap_or(0);
let mouse_event = MouseEvent::new(&self.window,
DOMString::from(event_name),
EventBubbles::Bubbles,
EventCancelable::Cancelable,
Some(&self.window),
0i32,
client_x,
client_y,
client_x,
client_y,
false,
false,
false,
false,
0i16,
None);
let event = mouse_event.upcast::<Event>();
event.fire(target);
}
#[allow(unsafe_code)]
pub fn handle_mouse_move_event(&self,
js_runtime: *mut JSRuntime,
client_point: Option<Point2D<f32>>,
prev_mouse_over_target: &MutNullableJS<Element>) {
let client_point = match client_point {
None => {
// If there's no point, there's no target under the mouse
// FIXME: dispatch mouseout here. We have no point.
prev_mouse_over_target.set(None);
return;
}
Some(client_point) => client_point,
};
let maybe_new_target = self.window.hit_test_query(client_point, true).and_then(|address| {
let node = unsafe { node::from_untrusted_node_address(js_runtime, address) };
node.inclusive_ancestors()
.filter_map(Root::downcast::<Element>)
.next()
});
// Send mousemove event to topmost target, and forward it if it's an iframe
if let Some(ref new_target) = maybe_new_target {
// If the target is an iframe, forward the event to the child document.
if let Some(iframe) = new_target.downcast::<HTMLIFrameElement>() {
if let Some(pipeline_id) = iframe.pipeline_id() {
let rect = iframe.upcast::<Element>().GetBoundingClientRect();
let child_origin = Vector2D::new(rect.X() as f32, rect.Y() as f32);
let child_point = client_point - child_origin;
let event = CompositorEvent::MouseMoveEvent(Some(child_point));
let event = ConstellationMsg::ForwardEvent(pipeline_id, event);
self.window.upcast::<GlobalScope>().constellation_chan().send(event).unwrap();
}
return;
}
self.fire_mouse_event(client_point, new_target.upcast(), "mousemove".to_owned());
}
// Nothing more to do here, mousemove is sent,
// and the element under the mouse hasn't changed.
if maybe_new_target == prev_mouse_over_target.get() {
return;
}
let old_target_is_ancestor_of_new_target = match (prev_mouse_over_target.get(), maybe_new_target.as_ref()) {
(Some(old_target), Some(new_target))
=> old_target.upcast::<Node>().is_ancestor_of(new_target.upcast::<Node>()),
_ => false,
};
// Here we know the target has changed, so we must update the state,
// dispatch mouseout to the previous one, mouseover to the new one,
if let Some(old_target) = prev_mouse_over_target.get() {
// If the old target is an ancestor of the new target, this can be skipped
// completely, since the node's hover state will be reseted below.
if !old_target_is_ancestor_of_new_target {
for element in old_target.upcast::<Node>()
.inclusive_ancestors()
.filter_map(Root::downcast::<Element>) {
element.set_hover_state(false);
element.set_active_state(false);
}
}
// Remove hover state to old target and its parents
self.fire_mouse_event(client_point, old_target.upcast(), "mouseout".to_owned());
// TODO: Fire mouseleave here only if the old target is
// not an ancestor of the new target.
}
if let Some(ref new_target) = maybe_new_target {
for element in new_target.upcast::<Node>()
.inclusive_ancestors()
.filter_map(Root::downcast::<Element>) {
if element.hover_state() {
break;
}
element.set_hover_state(true);
}
self.fire_mouse_event(client_point, &new_target.upcast(), "mouseover".to_owned());
// TODO: Fire mouseenter here.
}
// Store the current mouse over target for next frame.
prev_mouse_over_target.set(maybe_new_target.r());
self.window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::MouseEvent);
}
#[allow(unsafe_code)]
pub fn handle_touch_event(&self,
js_runtime: *mut JSRuntime,
event_type: TouchEventType,
touch_id: TouchId,
point: Point2D<f32>)
-> TouchEventResult {
let TouchId(identifier) = touch_id;
let event_name = match event_type {
TouchEventType::Down => "touchstart",
TouchEventType::Move => "touchmove",
TouchEventType::Up => "touchend",
TouchEventType::Cancel => "touchcancel",
};
let node = match self.window.hit_test_query(point, false) {
Some(node_address) => unsafe {
node::from_untrusted_node_address(js_runtime, node_address)
},
None => return TouchEventResult::Processed(false),
};
let el = match node.downcast::<Element>() {
Some(el) => Root::from_ref(el),
None => {
let parent = node.GetParentNode();
match parent.and_then(Root::downcast::<Element>) {
Some(parent) => parent,
None => return TouchEventResult::Processed(false),
}
},
};
// If the target is an iframe, forward the event to the child document.
if let Some(iframe) = el.downcast::<HTMLIFrameElement>() {
if let Some(pipeline_id) = iframe.pipeline_id() {
let rect = iframe.upcast::<Element>().GetBoundingClientRect();
let child_origin = Vector2D::new(rect.X() as f32, rect.Y() as f32);
let child_point = point - child_origin;
let event = CompositorEvent::TouchEvent(event_type, touch_id, child_point);
let event = ConstellationMsg::ForwardEvent(pipeline_id, event);
self.window.upcast::<GlobalScope>().constellation_chan().send(event).unwrap();
}
return TouchEventResult::Forwarded;
}
let target = Root::upcast::<EventTarget>(el);
let window = &*self.window;
let client_x = Finite::wrap(point.x as f64);
let client_y = Finite::wrap(point.y as f64);
let page_x = Finite::wrap(point.x as f64 + window.PageXOffset() as f64);
let page_y = Finite::wrap(point.y as f64 + window.PageYOffset() as f64);
let touch = Touch::new(window,
identifier,
&target,
client_x,
client_y, // TODO: Get real screen coordinates?
client_x,
client_y,
page_x,
page_y);
match event_type {
TouchEventType::Down => {
// Add a new touch point
self.active_touch_points.borrow_mut().push(JS::from_ref(&*touch));
}
TouchEventType::Move => {
// Replace an existing touch point
let mut active_touch_points = self.active_touch_points.borrow_mut();
match active_touch_points.iter_mut().find(|t| t.Identifier() == identifier) {
Some(t) => *t = JS::from_ref(&*touch),
None => warn!("Got a touchmove event for a non-active touch point"),
}
}
TouchEventType::Up |
TouchEventType::Cancel => {
// Remove an existing touch point
let mut active_touch_points = self.active_touch_points.borrow_mut();
match active_touch_points.iter().position(|t| t.Identifier() == identifier) {
Some(i) => {
active_touch_points.swap_remove(i);
}
None => warn!("Got a touchend event for a non-active touch point"),
}
}
}
rooted_vec!(let mut touches);
touches.extend(self.active_touch_points.borrow().iter().cloned());
rooted_vec!(let mut target_touches);
target_touches.extend(self.active_touch_points
.borrow()
.iter()
.filter(|t| t.Target() == target)
.cloned());
rooted_vec!(let changed_touches <- once(touch));
let event = TouchEvent::new(window,
DOMString::from(event_name),
EventBubbles::Bubbles,
EventCancelable::Cancelable,
Some(window),
0i32,
&TouchList::new(window, touches.r()),
&TouchList::new(window, changed_touches.r()),
&TouchList::new(window, target_touches.r()),
// FIXME: modifier keys
false,
false,
false,
false);
let event = event.upcast::<Event>();
let result = event.fire(&target);
window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::MouseEvent);
match result {
EventStatus::Canceled => TouchEventResult::Processed(false),
EventStatus::NotCanceled => TouchEventResult::Processed(true),
}
}
/// The entry point for all key processing for web content
pub fn dispatch_key_event(&self,
ch: Option<char>,
key: Key,
state: KeyState,
modifiers: KeyModifiers,
constellation: &IpcSender<ConstellationMsg>) {
let focused = self.get_focused_element();
let body = self.GetBody();
let target = match (&focused, &body) {
(&Some(ref focused), _) => focused.upcast(),
(&None, &Some(ref body)) => body.upcast(),
(&None, &None) => self.window.upcast(),
};
let ctrl = modifiers.contains(CONTROL);
let alt = modifiers.contains(ALT);
let shift = modifiers.contains(SHIFT);
let meta = modifiers.contains(SUPER);
let is_composing = false;
let is_repeating = state == KeyState::Repeated;
let ev_type = DOMString::from(match state {
KeyState::Pressed | KeyState::Repeated => "keydown",
KeyState::Released => "keyup",
}
.to_owned());
let props = KeyboardEvent::key_properties(ch, key, modifiers);
let keyevent = KeyboardEvent::new(&self.window,
ev_type,
true,
true,
Some(&self.window),
0,
ch,
Some(key),
DOMString::from(props.key_string.clone()),
DOMString::from(props.code),
props.location,
is_repeating,
is_composing,
ctrl,
alt,
shift,
meta,
None,
props.key_code);
let event = keyevent.upcast::<Event>();
event.fire(target);
let mut cancel_state = event.get_cancel_state();
// https://w3c.github.io/uievents/#keys-cancelable-keys
if state != KeyState::Released && props.is_printable() && cancel_state != EventDefault::Prevented {
// https://w3c.github.io/uievents/#keypress-event-order
let event = KeyboardEvent::new(&self.window,
DOMString::from("keypress"),
true,
true,
Some(&self.window),
0,
ch,
Some(key),
DOMString::from(props.key_string),
DOMString::from(props.code),
props.location,
is_repeating,
is_composing,
ctrl,
alt,
shift,
meta,
props.char_code,
0);
let ev = event.upcast::<Event>();
ev.fire(target);
cancel_state = ev.get_cancel_state();
}
if cancel_state == EventDefault::Allowed {
constellation.send(ConstellationMsg::SendKeyEvent(ch, key, state, modifiers)).unwrap();
// This behavior is unspecced
// We are supposed to dispatch synthetic click activation for Space and/or Return,
// however *when* we do it is up to us.
// Here, we're dispatching it after the key event so the script has a chance to cancel it
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=27337
match key {
Key::Space if state == KeyState::Released => {
let maybe_elem = target.downcast::<Element>();
if let Some(el) = maybe_elem {
synthetic_click_activation(el,
false,
false,
false,
false,
ActivationSource::NotFromClick)
}
}
Key::Enter if state == KeyState::Released => {
let maybe_elem = target.downcast::<Element>();
if let Some(el) = maybe_elem {
if let Some(a) = el.as_maybe_activatable() {
a.implicit_submission(ctrl, alt, shift, meta);
}
}
}
_ => (),
}
}
self.window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::KeyEvent);
}
// https://dom.spec.whatwg.org/#converting-nodes-into-a-node
pub fn node_from_nodes_and_strings(&self,
mut nodes: Vec<NodeOrString>)
-> Fallible<Root<Node>> {
if nodes.len() == 1 {
Ok(match nodes.pop().unwrap() {
NodeOrString::Node(node) => node,
NodeOrString::String(string) => Root::upcast(self.CreateTextNode(string)),
})
} else {
let fragment = Root::upcast::<Node>(self.CreateDocumentFragment());
for node in nodes {
match node {
NodeOrString::Node(node) => {
fragment.AppendChild(&node)?;
},
NodeOrString::String(string) => {
let node = Root::upcast::<Node>(self.CreateTextNode(string));
// No try!() here because appending a text node
// should not fail.
fragment.AppendChild(&node).unwrap();
}
}
}
Ok(fragment)
}
}
pub fn get_body_attribute(&self, local_name: &LocalName) -> DOMString {
match self.GetBody().and_then(Root::downcast::<HTMLBodyElement>) {
Some(ref body) => {
body.upcast::<Element>().get_string_attribute(local_name)
},
None => DOMString::new(),
}
}
pub fn set_body_attribute(&self, local_name: &LocalName, value: DOMString) {
if let Some(ref body) = self.GetBody().and_then(Root::downcast::<HTMLBodyElement>) {
let body = body.upcast::<Element>();
let value = body.parse_attribute(&ns!(), &local_name, value);
body.set_attribute(local_name, value);
}
}
pub fn set_current_script(&self, script: Option<&HTMLScriptElement>) {
self.current_script.set(script);
}
pub fn get_script_blocking_stylesheets_count(&self) -> u32 {
self.script_blocking_stylesheets_count.get()
}
pub fn increment_script_blocking_stylesheet_count(&self) {
let count_cell = &self.script_blocking_stylesheets_count;
count_cell.set(count_cell.get() + 1);
}
pub fn decrement_script_blocking_stylesheet_count(&self) {
let count_cell = &self.script_blocking_stylesheets_count;
assert!(count_cell.get() > 0);
count_cell.set(count_cell.get() - 1);
}
pub fn invalidate_stylesheets(&self) {
self.stylesheets_changed_since_reflow.set(true);
*self.stylesheets.borrow_mut() = None;
// Mark the document element dirty so a reflow will be performed.
if let Some(element) = self.GetDocumentElement() {
element.upcast::<Node>().dirty(NodeDamage::NodeStyleDamaged);
}
}
pub fn get_and_reset_stylesheets_changed_since_reflow(&self) -> bool {
let changed = self.stylesheets_changed_since_reflow.get();
self.stylesheets_changed_since_reflow.set(false);
changed
}
pub fn trigger_mozbrowser_event(&self, event: MozBrowserEvent) {
if PREFS.is_mozbrowser_enabled() {
if let Some((parent_pipeline_id, _)) = self.window.parent_info() {
let top_level_browsing_context_id = self.window.window_proxy().top_level_browsing_context_id();
let event = ConstellationMsg::MozBrowserEvent(parent_pipeline_id,
top_level_browsing_context_id,
event);
self.window.upcast::<GlobalScope>().constellation_chan().send(event).unwrap();
}
}
}
/// https://html.spec.whatwg.org/multipage/#dom-window-requestanimationframe
pub fn request_animation_frame(&self, callback: AnimationFrameCallback) -> u32 {
let ident = self.animation_frame_ident.get() + 1;
self.animation_frame_ident.set(ident);
self.animation_frame_list.borrow_mut().push((ident, Some(callback)));
// TODO: Should tick animation only when document is visible
// If we are running 'fake' animation frames, we unconditionally
// set up a one-shot timer for script to execute the rAF callbacks.
if self.is_faking_animation_frames() {
let callback = FakeRequestAnimationFrameCallback {
document: Trusted::new(self),
};
self.global()
.schedule_callback(OneshotTimerCallback::FakeRequestAnimationFrame(callback),
MsDuration::new(FAKE_REQUEST_ANIMATION_FRAME_DELAY));
} else if !self.running_animation_callbacks.get() {
// No need to send a `ChangeRunningAnimationsState` if we're running animation callbacks:
// we're guaranteed to already be in the "animation callbacks present" state.
//
// This reduces CPU usage by avoiding needless thread wakeups in the common case of
// repeated rAF.
let global_scope = self.window.upcast::<GlobalScope>();
let event = ConstellationMsg::ChangeRunningAnimationsState(
global_scope.pipeline_id(),
AnimationState::AnimationCallbacksPresent);
global_scope.constellation_chan().send(event).unwrap();
}
ident
}
/// https://html.spec.whatwg.org/multipage/#dom-window-cancelanimationframe
pub fn cancel_animation_frame(&self, ident: u32) {
let mut list = self.animation_frame_list.borrow_mut();
if let Some(mut pair) = list.iter_mut().find(|pair| pair.0 == ident) {
pair.1 = None;
}
}
/// https://html.spec.whatwg.org/multipage/#run-the-animation-frame-callbacks
pub fn run_the_animation_frame_callbacks(&self) {
rooted_vec!(let mut animation_frame_list);
mem::swap(
&mut *animation_frame_list,
&mut *self.animation_frame_list.borrow_mut());
self.running_animation_callbacks.set(true);
let was_faking_animation_frames = self.is_faking_animation_frames();
let timing = self.window.Performance().Now();
for (_, callback) in animation_frame_list.drain(..) {
if let Some(callback) = callback {
callback.call(self, *timing);
}
}
self.running_animation_callbacks.set(false);
let spurious = !self.window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::RequestAnimationFrame);
if spurious && !was_faking_animation_frames {
// If the rAF callbacks did not mutate the DOM, then the
// reflow call above means that layout will not be invoked,
// and therefore no new frame will be sent to the compositor.
// If this happens, the compositor will not tick the animation
// and the next rAF will never be called! When this happens
// for several frames, then the spurious rAF detection below
// will kick in and use a timer to tick the callbacks. However,
// for the interim frames where we are deciding whether this rAF
// is considered spurious, we need to ensure that the layout
// and compositor *do* tick the animation.
self.window.force_reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::RequestAnimationFrame);
}
// Only send the animation change state message after running any callbacks.
// This means that if the animation callback adds a new callback for
// the next frame (which is the common case), we won't send a NoAnimationCallbacksPresent
// message quickly followed by an AnimationCallbacksPresent message.
//
// If this frame was spurious and we've seen too many spurious frames in a row, tell the
// constellation to stop giving us video refresh callbacks, to save energy. (A spurious
// animation frame is one in which the callback did not mutate the DOM—that is, an
// animation frame that wasn't actually used for animation.)
if self.animation_frame_list.borrow().is_empty() ||
(!was_faking_animation_frames && self.is_faking_animation_frames()) {
mem::swap(&mut *self.animation_frame_list.borrow_mut(),
&mut *animation_frame_list);
let global_scope = self.window.upcast::<GlobalScope>();
let event = ConstellationMsg::ChangeRunningAnimationsState(
global_scope.pipeline_id(),
AnimationState::NoAnimationCallbacksPresent);
global_scope.constellation_chan().send(event).unwrap();
}
// Update the counter of spurious animation frames.
if spurious {
if self.spurious_animation_frames.get() < SPURIOUS_ANIMATION_FRAME_THRESHOLD {
self.spurious_animation_frames.set(self.spurious_animation_frames.get() + 1)
}
} else {
self.spurious_animation_frames.set(0)
}
}
pub fn fetch_async(&self, load: LoadType,
request: RequestInit,
fetch_target: IpcSender<FetchResponseMsg>) {
let mut loader = self.loader.borrow_mut();
loader.fetch_async(load, request, fetch_target);
}
// https://html.spec.whatwg.org/multipage/#the-end
// https://html.spec.whatwg.org/multipage/#delay-the-load-event
pub fn finish_load(&self, load: LoadType) {
// This does not delay the load event anymore.
debug!("Document got finish_load: {:?}", load);
self.loader.borrow_mut().finish_load(&load);
match load {
LoadType::Stylesheet(_) => {
// A stylesheet finishing to load may unblock any pending
// parsing-blocking script or deferred script.
self.process_pending_parsing_blocking_script();
// Step 3.
self.process_deferred_scripts();
},
LoadType::PageSource(_) => {
if self.has_browsing_context {
// Disarm the reflow timer and trigger the initial reflow.
self.reflow_timeout.set(None);
self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
self.window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::FirstLoad);
}
// Deferred scripts have to wait for page to finish loading,
// this is the first opportunity to process them.
// Step 3.
self.process_deferred_scripts();
},
_ => {},
}
// Step 4 is in another castle, namely at the end of
// process_deferred_scripts.
// Step 5 can be found in asap_script_loaded and
// asap_in_order_script_loaded.
let loader = self.loader.borrow();
if loader.is_blocked() || loader.events_inhibited() {
// Step 6.
return;
}
ScriptThread::mark_document_with_no_blocked_loads(self);
}
// https://html.spec.whatwg.org/multipage/#the-end
pub fn maybe_queue_document_completion(&self) {
if self.loader.borrow().is_blocked() {
// Step 6.
return;
}
assert!(!self.loader.borrow().events_inhibited());
self.loader.borrow_mut().inhibit_events();
// The rest will ever run only once per document.
// Step 7.
debug!("Document loads are complete.");
let handler = box DocumentProgressHandler::new(Trusted::new(self));
self.window.dom_manipulation_task_source().queue(handler, self.window.upcast()).unwrap();
// Step 8.
// TODO: pageshow event.
// Step 9.
// TODO: pending application cache download process tasks.
// Step 10.
// TODO: printing steps.
// Step 11.
// TODO: ready for post-load tasks.
// Step 12.
// TODO: completely loaded.
}
// https://html.spec.whatwg.org/multipage/#pending-parsing-blocking-script
pub fn set_pending_parsing_blocking_script(&self,
script: &HTMLScriptElement,
load: Option<ScriptResult>) {
assert!(!self.has_pending_parsing_blocking_script());
*self.pending_parsing_blocking_script.borrow_mut() = Some(PendingScript::new_with_load(script, load));
}
// https://html.spec.whatwg.org/multipage/#pending-parsing-blocking-script
pub fn has_pending_parsing_blocking_script(&self) -> bool {
self.pending_parsing_blocking_script.borrow().is_some()
}
/// https://html.spec.whatwg.org/multipage/#prepare-a-script step 22.d.
pub fn pending_parsing_blocking_script_loaded(&self, element: &HTMLScriptElement, result: ScriptResult) {
{
let mut blocking_script = self.pending_parsing_blocking_script.borrow_mut();
let entry = blocking_script.as_mut().unwrap();
assert!(&*entry.element == element);
entry.loaded(result);
}
self.process_pending_parsing_blocking_script();
}
fn process_pending_parsing_blocking_script(&self) {
if self.script_blocking_stylesheets_count.get() > 0 {
return;
}
let pair = self.pending_parsing_blocking_script
.borrow_mut()
.as_mut()
.and_then(PendingScript::take_result);
if let Some((element, result)) = pair {
*self.pending_parsing_blocking_script.borrow_mut() = None;
self.get_current_parser().unwrap().resume_with_pending_parsing_blocking_script(&element, result);
}
}
// https://html.spec.whatwg.org/multipage/#set-of-scripts-that-will-execute-as-soon-as-possible
pub fn add_asap_script(&self, script: &HTMLScriptElement) {
self.asap_scripts_set.borrow_mut().push(JS::from_ref(script));
}
/// https://html.spec.whatwg.org/multipage/#the-end step 5.
/// https://html.spec.whatwg.org/multipage/#prepare-a-script step 22.d.
pub fn asap_script_loaded(&self, element: &HTMLScriptElement, result: ScriptResult) {
{
let mut scripts = self.asap_scripts_set.borrow_mut();
let idx = scripts.iter().position(|entry| &**entry == element).unwrap();
scripts.swap_remove(idx);
}
element.execute(result);
}
// https://html.spec.whatwg.org/multipage/#list-of-scripts-that-will-execute-in-order-as-soon-as-possible
pub fn push_asap_in_order_script(&self, script: &HTMLScriptElement) {
self.asap_in_order_scripts_list.push(script);
}
/// https://html.spec.whatwg.org/multipage/#the-end step 5.
/// https://html.spec.whatwg.org/multipage/#prepare-a-script step 22.c.
pub fn asap_in_order_script_loaded(&self,
element: &HTMLScriptElement,
result: ScriptResult) {
self.asap_in_order_scripts_list.loaded(element, result);
while let Some((element, result)) = self.asap_in_order_scripts_list.take_next_ready_to_be_executed() {
element.execute(result);
}
}
// https://html.spec.whatwg.org/multipage/#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing
pub fn add_deferred_script(&self, script: &HTMLScriptElement) {
self.deferred_scripts.push(script);
}
/// https://html.spec.whatwg.org/multipage/#the-end step 3.
/// https://html.spec.whatwg.org/multipage/#prepare-a-script step 22.d.
pub fn deferred_script_loaded(&self, element: &HTMLScriptElement, result: ScriptResult) {
self.deferred_scripts.loaded(element, result);
self.process_deferred_scripts();
}
/// https://html.spec.whatwg.org/multipage/#the-end step 3.
fn process_deferred_scripts(&self) {
if self.ready_state.get() != DocumentReadyState::Interactive {
return;
}
// Part of substep 1.
loop {
if self.script_blocking_stylesheets_count.get() > 0 {
return;
}
if let Some((element, result)) = self.deferred_scripts.take_next_ready_to_be_executed() {
element.execute(result);
} else {
break;
}
}
if self.deferred_scripts.is_empty() {
// https://html.spec.whatwg.org/multipage/#the-end step 4.
self.maybe_dispatch_dom_content_loaded();
}
}
// https://html.spec.whatwg.org/multipage/#the-end step 4.
pub fn maybe_dispatch_dom_content_loaded(&self) {
if self.domcontentloaded_dispatched.get() {
return;
}
self.domcontentloaded_dispatched.set(true);
assert!(self.ReadyState() != DocumentReadyState::Complete,
"Complete before DOMContentLoaded?");
update_with_current_time_ms(&self.dom_content_loaded_event_start);
// Step 4.1.
let window = self.window();
window.dom_manipulation_task_source().queue_event(self.upcast(), atom!("DOMContentLoaded"),
EventBubbles::Bubbles, EventCancelable::NotCancelable, window);
window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::DOMContentLoaded);
update_with_current_time_ms(&self.dom_content_loaded_event_end);
// Step 4.2.
// TODO: client message queue.
}
// https://html.spec.whatwg.org/multipage/#abort-a-document
fn abort(&self) {
// We need to inhibit the loader before anything else.
self.loader.borrow_mut().inhibit_events();
// Step 1.
for iframe in self.iter_iframes() {
if let Some(document) = iframe.GetContentDocument() {
// TODO: abort the active documents of every child browsing context.
document.abort();
// TODO: salvageable flag.
}
}
// Step 2.
self.script_blocking_stylesheets_count.set(0);
*self.pending_parsing_blocking_script.borrow_mut() = None;
*self.asap_scripts_set.borrow_mut() = vec![];
self.asap_in_order_scripts_list.clear();
self.deferred_scripts.clear();
// TODO: https://github.com/servo/servo/issues/15236
self.window.cancel_all_tasks();
// Step 3.
if let Some(parser) = self.get_current_parser() {
parser.abort();
// TODO: salvageable flag.
}
}
pub fn notify_constellation_load(&self) {
let global_scope = self.window.upcast::<GlobalScope>();
let pipeline_id = global_scope.pipeline_id();
let load_event = ConstellationMsg::LoadComplete(pipeline_id);
global_scope.constellation_chan().send(load_event).unwrap();
}
pub fn set_current_parser(&self, script: Option<&ServoParser>) {
self.current_parser.set(script);
}
pub fn get_current_parser(&self) -> Option<Root<ServoParser>> {
self.current_parser.get()
}
/// Iterate over all iframes in the document.
pub fn iter_iframes(&self) -> impl Iterator<Item=Root<HTMLIFrameElement>> {
self.upcast::<Node>()
.traverse_preorder()
.filter_map(Root::downcast::<HTMLIFrameElement>)
}
/// Find an iframe element in the document.
pub fn find_iframe(&self, browsing_context_id: BrowsingContextId) -> Option<Root<HTMLIFrameElement>> {
self.iter_iframes()
.find(|node| node.browsing_context_id() == Some(browsing_context_id))
}
/// Find a mozbrowser iframe element in the document.
pub fn find_mozbrowser_iframe(&self,
top_level_browsing_context_id: TopLevelBrowsingContextId)
-> Option<Root<HTMLIFrameElement>>
{
match self.find_iframe(BrowsingContextId::from(top_level_browsing_context_id)) {
None => None,
Some(iframe) => {
assert!(iframe.Mozbrowser());
Some(iframe)
},
}
}
pub fn get_dom_loading(&self) -> u64 {
self.dom_loading.get()
}
pub fn get_dom_interactive(&self) -> u64 {
self.dom_interactive.get()
}
pub fn get_dom_content_loaded_event_start(&self) -> u64 {
self.dom_content_loaded_event_start.get()
}
pub fn get_dom_content_loaded_event_end(&self) -> u64 {
self.dom_content_loaded_event_end.get()
}
pub fn get_dom_complete(&self) -> u64 {
self.dom_complete.get()
}
pub fn get_load_event_start(&self) -> u64 {
self.load_event_start.get()
}
pub fn get_load_event_end(&self) -> u64 {
self.load_event_end.get()
}
// https://html.spec.whatwg.org/multipage/#fire-a-focus-event
fn fire_focus_event(&self, focus_event_type: FocusEventType, node: &Node, related_target: Option<&EventTarget>) {
let (event_name, does_bubble) = match focus_event_type {
FocusEventType::Focus => (DOMString::from("focus"), EventBubbles::DoesNotBubble),
FocusEventType::Blur => (DOMString::from("blur"), EventBubbles::DoesNotBubble),
};
let event = FocusEvent::new(&self.window,
event_name,
does_bubble,
EventCancelable::NotCancelable,
Some(&self.window),
0i32,
related_target);
let event = event.upcast::<Event>();
event.set_trusted(true);
let target = node.upcast();
event.fire(target);
}
/// https://html.spec.whatwg.org/multipage/#cookie-averse-document-object
pub fn is_cookie_averse(&self) -> bool {
!self.has_browsing_context || !url_has_network_scheme(&self.url())
}
pub fn nodes_from_point(&self, client_point: &Point2D<f32>) -> Vec<UntrustedNodeAddress> {
if !self.window.reflow(ReflowGoal::ForScriptQuery,
ReflowQueryType::NodesFromPoint(*client_point),
ReflowReason::Query) {
return vec!();
};
self.window.layout().nodes_from_point_response()
}
/// https://html.spec.whatwg.org/multipage/#look-up-a-custom-element-definition
pub fn lookup_custom_element_definition(&self,
local_name: LocalName,
is: Option<LocalName>)
-> Option<Rc<CustomElementDefinition>> {
if !PREFS.get("dom.customelements.enabled").as_boolean().unwrap_or(false) {
return None;
}
// Step 2
if !self.has_browsing_context {
return None;
}
// Step 3
let registry = self.window.CustomElements();
registry.lookup_definition(local_name, is)
}
}
#[derive(PartialEq, HeapSizeOf)]
pub enum DocumentSource {
FromParser,
NotFromParser,
}
#[allow(unsafe_code)]
pub trait LayoutDocumentHelpers {
unsafe fn is_html_document_for_layout(&self) -> bool;
unsafe fn drain_pending_restyles(&self) -> Vec<(LayoutJS<Element>, PendingRestyle)>;
unsafe fn needs_paint_from_layout(&self);
unsafe fn will_paint(&self);
unsafe fn quirks_mode(&self) -> QuirksMode;
unsafe fn style_shared_lock(&self) -> &StyleSharedRwLock;
}
#[allow(unsafe_code)]
impl LayoutDocumentHelpers for LayoutJS<Document> {
#[inline]
unsafe fn is_html_document_for_layout(&self) -> bool {
(*self.unsafe_get()).is_html_document
}
#[inline]
#[allow(unrooted_must_root)]
unsafe fn drain_pending_restyles(&self) -> Vec<(LayoutJS<Element>, PendingRestyle)> {
let mut elements = (*self.unsafe_get()).pending_restyles.borrow_mut_for_layout();
// Elements were in a document when they were adding to this list, but that
// may no longer be true when the next layout occurs.
let result = elements.drain()
.map(|(k, v)| (k.to_layout(), v))
.filter(|&(ref k, _)| k.upcast::<Node>().get_flag(IS_IN_DOC))
.collect();
result
}
#[inline]
unsafe fn needs_paint_from_layout(&self) {
(*self.unsafe_get()).needs_paint.set(true)
}
#[inline]
unsafe fn will_paint(&self) {
(*self.unsafe_get()).needs_paint.set(false)
}
#[inline]
unsafe fn quirks_mode(&self) -> QuirksMode {
(*self.unsafe_get()).quirks_mode()
}
#[inline]
unsafe fn style_shared_lock(&self) -> &StyleSharedRwLock {
(*self.unsafe_get()).style_shared_lock()
}
}
// https://html.spec.whatwg.org/multipage/#is-a-registrable-domain-suffix-of-or-is-equal-to
// The spec says to return a bool, we actually return an Option<Host> containing
// the parsed host in the successful case, to avoid having to re-parse the host.
fn get_registrable_domain_suffix_of_or_is_equal_to(host_suffix_string: &str, original_host: Host) -> Option<Host> {
// Step 1
if host_suffix_string.is_empty() {
return None;
}
// Step 2-3.
let host = match Host::parse(host_suffix_string) {
Ok(host) => host,
Err(_) => return None,
};
// Step 4.
if host != original_host {
// Step 4.1
let host = match host {
Host::Domain(ref host) => host,
_ => return None,
};
let original_host = match original_host {
Host::Domain(ref original_host) => original_host,
_ => return None,
};
// Step 4.2
let (prefix, suffix) = match original_host.len().checked_sub(host.len()) {
Some(index) => original_host.split_at(index),
None => return None,
};
if !prefix.ends_with(".") {
return None;
}
if suffix != host {
return None;
}
// Step 4.3
if is_pub_domain(host) {
return None;
}
}
// Step 5
Some(host)
}
/// https://url.spec.whatwg.org/#network-scheme
fn url_has_network_scheme(url: &ServoUrl) -> bool {
match url.scheme() {
"ftp" | "http" | "https" => true,
_ => false,
}
}
#[derive(Copy, Clone, HeapSizeOf, JSTraceable, PartialEq, Eq)]
pub enum HasBrowsingContext {
No,
Yes,
}
impl Document {
pub fn new_inherited(window: &Window,
has_browsing_context: HasBrowsingContext,
url: Option<ServoUrl>,
origin: MutableOrigin,
is_html_document: IsHTMLDocument,
content_type: Option<DOMString>,
last_modified: Option<String>,
activity: DocumentActivity,
source: DocumentSource,
doc_loader: DocumentLoader,
referrer: Option<String>,
referrer_policy: Option<ReferrerPolicy>)
-> Document {
let url = url.unwrap_or_else(|| ServoUrl::parse("about:blank").unwrap());
let (ready_state, domcontentloaded_dispatched) = if source == DocumentSource::FromParser {
(DocumentReadyState::Loading, false)
} else {
(DocumentReadyState::Complete, true)
};
Document {
node: Node::new_document_node(),
window: JS::from_ref(window),
has_browsing_context: has_browsing_context == HasBrowsingContext::Yes,
implementation: Default::default(),
location: Default::default(),
content_type: match content_type {
Some(string) => string,
None => DOMString::from(match is_html_document {
// https://dom.spec.whatwg.org/#dom-domimplementation-createhtmldocument
IsHTMLDocument::HTMLDocument => "text/html",
// https://dom.spec.whatwg.org/#concept-document-content-type
IsHTMLDocument::NonHTMLDocument => "application/xml",
}),
},
last_modified: last_modified,
url: DOMRefCell::new(url),
// https://dom.spec.whatwg.org/#concept-document-quirks
quirks_mode: Cell::new(QuirksMode::NoQuirks),
// https://dom.spec.whatwg.org/#concept-document-encoding
encoding: Cell::new(UTF_8),
is_html_document: is_html_document == IsHTMLDocument::HTMLDocument,
activity: Cell::new(activity),
id_map: DOMRefCell::new(HashMap::new()),
tag_map: DOMRefCell::new(HashMap::new()),
tagns_map: DOMRefCell::new(HashMap::new()),
classes_map: DOMRefCell::new(HashMap::new()),
images: Default::default(),
embeds: Default::default(),
links: Default::default(),
forms: Default::default(),
scripts: Default::default(),
anchors: Default::default(),
applets: Default::default(),
style_shared_lock: {
lazy_static! {
/// Per-process shared lock for author-origin stylesheets
///
/// FIXME: make it per-document or per-pipeline instead:
/// https://github.com/servo/servo/issues/16027
/// (Need to figure out what to do with the style attribute
/// of elements adopted into another document.)
static ref PER_PROCESS_AUTHOR_SHARED_LOCK: StyleSharedRwLock = {
StyleSharedRwLock::new()
};
}
PER_PROCESS_AUTHOR_SHARED_LOCK.clone()
//StyleSharedRwLock::new()
},
stylesheets: DOMRefCell::new(None),
stylesheets_changed_since_reflow: Cell::new(false),
stylesheet_list: MutNullableJS::new(None),
ready_state: Cell::new(ready_state),
domcontentloaded_dispatched: Cell::new(domcontentloaded_dispatched),
possibly_focused: Default::default(),
focused: Default::default(),
current_script: Default::default(),
pending_parsing_blocking_script: Default::default(),
script_blocking_stylesheets_count: Cell::new(0u32),
deferred_scripts: Default::default(),
asap_in_order_scripts_list: Default::default(),
asap_scripts_set: Default::default(),
scripting_enabled: has_browsing_context == HasBrowsingContext::Yes,
animation_frame_ident: Cell::new(0),
animation_frame_list: DOMRefCell::new(vec![]),
running_animation_callbacks: Cell::new(false),
loader: DOMRefCell::new(doc_loader),
current_parser: Default::default(),
reflow_timeout: Cell::new(None),
base_element: Default::default(),
appropriate_template_contents_owner_document: Default::default(),
pending_restyles: DOMRefCell::new(HashMap::new()),
needs_paint: Cell::new(false),
active_touch_points: DOMRefCell::new(Vec::new()),
dom_loading: Cell::new(Default::default()),
dom_interactive: Cell::new(Default::default()),
dom_content_loaded_event_start: Cell::new(Default::default()),
dom_content_loaded_event_end: Cell::new(Default::default()),
dom_complete: Cell::new(Default::default()),
load_event_start: Cell::new(Default::default()),
load_event_end: Cell::new(Default::default()),
https_state: Cell::new(HttpsState::None),
touchpad_pressure_phase: Cell::new(TouchpadPressurePhase::BeforeClick),
origin: origin,
referrer: referrer,
referrer_policy: Cell::new(referrer_policy),
target_element: MutNullableJS::new(None),
last_click_info: DOMRefCell::new(None),
ignore_destructive_writes_counter: Default::default(),
spurious_animation_frames: Cell::new(0),
dom_count: Cell::new(1),
fullscreen_element: MutNullableJS::new(None),
form_id_listener_map: Default::default(),
}
}
// https://dom.spec.whatwg.org/#dom-document-document
pub fn Constructor(window: &Window) -> Fallible<Root<Document>> {
let doc = window.Document();
let docloader = DocumentLoader::new(&*doc.loader());
Ok(Document::new(window,
HasBrowsingContext::No,
None,
doc.origin().clone(),
IsHTMLDocument::NonHTMLDocument,
None,
None,
DocumentActivity::Inactive,
DocumentSource::NotFromParser,
docloader,
None,
None))
}
pub fn new(window: &Window,
has_browsing_context: HasBrowsingContext,
url: Option<ServoUrl>,
origin: MutableOrigin,
doctype: IsHTMLDocument,
content_type: Option<DOMString>,
last_modified: Option<String>,
activity: DocumentActivity,
source: DocumentSource,
doc_loader: DocumentLoader,
referrer: Option<String>,
referrer_policy: Option<ReferrerPolicy>)
-> Root<Document> {
let document = reflect_dom_object(box Document::new_inherited(window,
has_browsing_context,
url,
origin,
doctype,
content_type,
last_modified,
activity,
source,
doc_loader,
referrer,
referrer_policy),
window,
DocumentBinding::Wrap);
{
let node = document.upcast::<Node>();
node.set_owner_doc(&document);
}
document
}
fn create_node_list<F: Fn(&Node) -> bool>(&self, callback: F) -> Root<NodeList> {
let doc = self.GetDocumentElement();
let maybe_node = doc.r().map(Castable::upcast::<Node>);
let iter = maybe_node.iter()
.flat_map(|node| node.traverse_preorder())
.filter(|node| callback(&node));
NodeList::new_simple_list(&self.window, iter)
}
fn get_html_element(&self) -> Option<Root<HTMLHtmlElement>> {
self.GetDocumentElement().and_then(Root::downcast)
}
// Ensure that the stylesheets vector is populated
fn ensure_stylesheets(&self) {
let mut stylesheets = self.stylesheets.borrow_mut();
if stylesheets.is_none() {
*stylesheets = Some(self.upcast::<Node>()
.traverse_preorder()
.filter_map(|node| {
node.get_stylesheet()
.map(|stylesheet| StylesheetInDocument {
node: JS::from_ref(&*node),
stylesheet: stylesheet,
})
})
.collect());
};
}
/// Return a reference to the per-document shared lock used in stylesheets.
pub fn style_shared_lock(&self) -> &StyleSharedRwLock {
&self.style_shared_lock
}
/// Returns the list of stylesheets associated with nodes in the document.
pub fn stylesheets(&self) -> Vec<Arc<Stylesheet>> {
self.ensure_stylesheets();
self.stylesheets.borrow().as_ref().unwrap().iter()
.map(|s| s.stylesheet.clone())
.collect()
}
pub fn with_style_sheets_in_document<F, T>(&self, mut f: F) -> T
where F: FnMut(&[StylesheetInDocument]) -> T {
self.ensure_stylesheets();
f(&self.stylesheets.borrow().as_ref().unwrap())
}
/// https://html.spec.whatwg.org/multipage/#appropriate-template-contents-owner-document
pub fn appropriate_template_contents_owner_document(&self) -> Root<Document> {
self.appropriate_template_contents_owner_document.or_init(|| {
let doctype = if self.is_html_document {
IsHTMLDocument::HTMLDocument
} else {
IsHTMLDocument::NonHTMLDocument
};
let new_doc = Document::new(self.window(),
HasBrowsingContext::No,
None,
// https://github.com/whatwg/html/issues/2109
MutableOrigin::new(ImmutableOrigin::new_opaque()),
doctype,
None,
None,
DocumentActivity::Inactive,
DocumentSource::NotFromParser,
DocumentLoader::new(&self.loader()),
None,
None);
new_doc.appropriate_template_contents_owner_document.set(Some(&new_doc));
new_doc
})
}
pub fn get_element_by_id(&self, id: &Atom) -> Option<Root<Element>> {
self.id_map.borrow().get(&id).map(|ref elements| Root::from_ref(&*(*elements)[0]))
}
pub fn ensure_pending_restyle(&self, el: &Element) -> RefMut<PendingRestyle> {
let map = self.pending_restyles.borrow_mut();
RefMut::map(map, |m| m.entry(JS::from_ref(el)).or_insert_with(PendingRestyle::new))
}
pub fn element_state_will_change(&self, el: &Element) {
let mut entry = self.ensure_pending_restyle(el);
if entry.snapshot.is_none() {
entry.snapshot = Some(Snapshot::new(el.html_element_in_html_document()));
}
let mut snapshot = entry.snapshot.as_mut().unwrap();
if snapshot.state.is_none() {
snapshot.state = Some(el.state());
}
}
pub fn element_attr_will_change(&self, el: &Element, attr: &Attr) {
// FIXME(emilio): Kind of a shame we have to duplicate this.
//
// I'm getting rid of the whole hashtable soon anyway, since all it does
// right now is populate the element restyle data in layout, and we
// could in theory do it in the DOM I think.
let mut entry = self.ensure_pending_restyle(el);
if entry.snapshot.is_none() {
entry.snapshot = Some(Snapshot::new(el.html_element_in_html_document()));
}
if attr.local_name() == &local_name!("style") {
entry.hint.insert(RESTYLE_STYLE_ATTRIBUTE);
}
// FIXME(emilio): This should become something like
// element.is_attribute_mapped(attr.local_name()).
if attr.local_name() == &local_name!("width") ||
attr.local_name() == &local_name!("height") {
entry.hint.insert(RESTYLE_SELF);
}
let mut snapshot = entry.snapshot.as_mut().unwrap();
if attr.local_name() == &local_name!("id") {
snapshot.id_changed = true;
} else if attr.local_name() == &local_name!("class") {
snapshot.class_changed = true;
} else {
snapshot.other_attributes_changed = true;
}
if snapshot.attrs.is_none() {
let attrs = el.attrs()
.iter()
.map(|attr| (attr.identifier().clone(), attr.value().clone()))
.collect();
snapshot.attrs = Some(attrs);
}
}
pub fn set_referrer_policy(&self, policy: Option<ReferrerPolicy>) {
self.referrer_policy.set(policy);
}
//TODO - default still at no-referrer
pub fn get_referrer_policy(&self) -> Option<ReferrerPolicy> {
return self.referrer_policy.get();
}
pub fn set_target_element(&self, node: Option<&Element>) {
if let Some(ref element) = self.target_element.get() {
element.set_target_state(false);
}
self.target_element.set(node);
if let Some(ref element) = self.target_element.get() {
element.set_target_state(true);
}
self.window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::ElementStateChanged);
}
pub fn incr_ignore_destructive_writes_counter(&self) {
self.ignore_destructive_writes_counter.set(
self.ignore_destructive_writes_counter.get() + 1);
}
pub fn decr_ignore_destructive_writes_counter(&self) {
self.ignore_destructive_writes_counter.set(
self.ignore_destructive_writes_counter.get() - 1);
}
/// Whether we've seen so many spurious animation frames (i.e. animation frames that didn't
/// mutate the DOM) that we've decided to fall back to fake ones.
fn is_faking_animation_frames(&self) -> bool {
self.spurious_animation_frames.get() >= SPURIOUS_ANIMATION_FRAME_THRESHOLD
}
// https://fullscreen.spec.whatwg.org/#dom-element-requestfullscreen
#[allow(unrooted_must_root)]
pub fn enter_fullscreen(&self, pending: &Element) -> Rc<Promise> {
// Step 1
let promise = Promise::new(self.global().r());
let mut error = false;
// Step 4
// check namespace
match *pending.namespace() {
ns!(mathml) => {
if pending.local_name().as_ref() != "math" {
error = true;
}
}
ns!(svg) => {
if pending.local_name().as_ref() != "svg" {
error = true;
}
}
ns!(html) => (),
_ => error = true,
}
// fullscreen element ready check
if !pending.fullscreen_element_ready_check() {
error = true;
}
// TODO fullscreen is supported
// TODO This algorithm is allowed to request fullscreen.
// Step 5 Parallel start
let window = self.window();
// Step 6
if !error {
let event = ConstellationMsg::SetFullscreenState(true);
window.upcast::<GlobalScope>().constellation_chan().send(event).unwrap();
}
// Step 7
let trusted_pending = Trusted::new(pending);
let trusted_promise = TrustedPromise::new(promise.clone());
let handler = ElementPerformFullscreenEnter::new(trusted_pending, trusted_promise, error);
let script_msg = CommonScriptMsg::RunnableMsg(ScriptThreadEventCategory::EnterFullscreen, handler);
let msg = MainThreadScriptMsg::Common(script_msg);
window.main_thread_script_chan().send(msg).unwrap();
promise
}
// https://fullscreen.spec.whatwg.org/#exit-fullscreen
#[allow(unrooted_must_root)]
pub fn exit_fullscreen(&self) -> Rc<Promise> {
let global = self.global();
// Step 1
let promise = Promise::new(global.r());
// Step 2
if self.fullscreen_element.get().is_none() {
promise.reject_error(global.get_cx(), Error::Type(String::from("fullscreen is null")));
return promise
}
// TODO Step 3-6
let element = self.fullscreen_element.get().unwrap();
// Step 7 Parallel start
let window = self.window();
// Step 8
let event = ConstellationMsg::SetFullscreenState(false);
window.upcast::<GlobalScope>().constellation_chan().send(event).unwrap();
// Step 9
let trusted_element = Trusted::new(element.r());
let trusted_promise = TrustedPromise::new(promise.clone());
let handler = ElementPerformFullscreenExit::new(trusted_element, trusted_promise);
let script_msg = CommonScriptMsg::RunnableMsg(ScriptThreadEventCategory::ExitFullscreen, handler);
let msg = MainThreadScriptMsg::Common(script_msg);
window.main_thread_script_chan().send(msg).unwrap();
promise
}
pub fn set_fullscreen_element(&self, element: Option<&Element>) {
self.fullscreen_element.set(element);
}
pub fn get_allow_fullscreen(&self) -> bool {
// https://html.spec.whatwg.org/multipage/#allowed-to-use
match self.browsing_context() {
// Step 1
None => false,
Some(_) => {
// Step 2
let window = self.window();
if window.is_top_level() {
true
} else {
// Step 3
window.GetFrameElement().map_or(false, |el| el.has_attribute(&local_name!("allowfullscreen")))
}
}
}
}
fn reset_form_owner_for_listeners(&self, id: &Atom) {
let map = self.form_id_listener_map.borrow();
if let Some(listeners) = map.get(id) {
for listener in listeners {
listener.r().as_maybe_form_control()
.expect("Element must be a form control")
.reset_form_owner();
}
}
}
}
impl Element {
fn click_event_filter_by_disabled_state(&self) -> bool {
let node = self.upcast::<Node>();
match node.type_id() {
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLButtonElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLInputElement)) |
// NodeTypeId::Element(ElementTypeId::HTMLKeygenElement) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLOptionElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLSelectElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTextAreaElement))
if self.disabled_state() => true,
_ => false,
}
}
}
impl DocumentMethods for Document {
// https://drafts.csswg.org/cssom/#dom-document-stylesheets
fn StyleSheets(&self) -> Root<StyleSheetList> {
self.stylesheet_list.or_init(|| StyleSheetList::new(&self.window, JS::from_ref(&self)))
}
// https://dom.spec.whatwg.org/#dom-document-implementation
fn Implementation(&self) -> Root<DOMImplementation> {
self.implementation.or_init(|| DOMImplementation::new(self))
}
// https://dom.spec.whatwg.org/#dom-document-url
fn URL(&self) -> USVString {
USVString(String::from(self.url().as_str()))
}
// https://html.spec.whatwg.org/multipage/#dom-document-activeelement
fn GetActiveElement(&self) -> Option<Root<Element>> {
// TODO: Step 2.
match self.get_focused_element() {
Some(element) => Some(element), // Step 3. and 4.
None => match self.GetBody() { // Step 5.
Some(body) => Some(Root::upcast(body)),
None => self.GetDocumentElement(),
},
}
}
// https://html.spec.whatwg.org/multipage/#dom-document-hasfocus
fn HasFocus(&self) -> bool {
// Step 1-2.
if self.window().parent_info().is_none() && self.is_fully_active() {
return true;
}
// TODO Step 3.
false
}
// https://html.spec.whatwg.org/multipage/#dom-document-domain
fn Domain(&self) -> DOMString {
// Step 1.
if !self.has_browsing_context {
return DOMString::new();
}
// Step 2.
match self.origin.effective_domain() {
// Step 3.
None => DOMString::new(),
// Step 4.
Some(Host::Domain(domain)) => DOMString::from(domain),
Some(host) => DOMString::from(host.to_string()),
}
}
// https://html.spec.whatwg.org/multipage/#dom-document-domain
fn SetDomain(&self, value: DOMString) -> ErrorResult {
// Step 1.
if !self.has_browsing_context {
return Err(Error::Security);
}
// TODO: Step 2. "If this Document object's active sandboxing
// flag set has its sandboxed document.domain browsing context
// flag set, then throw a "SecurityError" DOMException."
// Steps 3-4.
let effective_domain = match self.origin.effective_domain() {
Some(effective_domain) => effective_domain,
None => return Err(Error::Security),
};
// Step 5
let host = match get_registrable_domain_suffix_of_or_is_equal_to(&*value, effective_domain) {
None => return Err(Error::Security),
Some(host) => host,
};
// Step 6
self.origin.set_domain(host);
Ok(())
}
// https://html.spec.whatwg.org/multipage/#dom-document-referrer
fn Referrer(&self) -> DOMString {
match self.referrer {
Some(ref referrer) => DOMString::from(referrer.to_string()),
None => DOMString::new()
}
}
// https://dom.spec.whatwg.org/#dom-document-documenturi
fn DocumentURI(&self) -> USVString {
self.URL()
}
// https://dom.spec.whatwg.org/#dom-document-compatmode
fn CompatMode(&self) -> DOMString {
DOMString::from(match self.quirks_mode.get() {
QuirksMode::LimitedQuirks | QuirksMode::NoQuirks => "CSS1Compat",
QuirksMode::Quirks => "BackCompat",
})
}
// https://dom.spec.whatwg.org/#dom-document-characterset
fn CharacterSet(&self) -> DOMString {
DOMString::from(match self.encoding.get().name() {
"utf-8" => "UTF-8",
"ibm866" => "IBM866",
"iso-8859-2" => "ISO-8859-2",
"iso-8859-3" => "ISO-8859-3",
"iso-8859-4" => "ISO-8859-4",
"iso-8859-5" => "ISO-8859-5",
"iso-8859-6" => "ISO-8859-6",
"iso-8859-7" => "ISO-8859-7",
"iso-8859-8" => "ISO-8859-8",
"iso-8859-8-i" => "ISO-8859-8-I",
"iso-8859-10" => "ISO-8859-10",
"iso-8859-13" => "ISO-8859-13",
"iso-8859-14" => "ISO-8859-14",
"iso-8859-15" => "ISO-8859-15",
"iso-8859-16" => "ISO-8859-16",
"koi8-r" => "KOI8-R",
"koi8-u" => "KOI8-U",
"gbk" => "GBK",
"big5" => "Big5",
"euc-jp" => "EUC-JP",
"iso-2022-jp" => "ISO-2022-JP",
"shift_jis" => "Shift_JIS",
"euc-kr" => "EUC-KR",
"utf-16be" => "UTF-16BE",
"utf-16le" => "UTF-16LE",
name => name
})
}
// https://dom.spec.whatwg.org/#dom-document-charset
fn Charset(&self) -> DOMString {
self.CharacterSet()
}
// https://dom.spec.whatwg.org/#dom-document-inputencoding
fn InputEncoding(&self) -> DOMString {
self.CharacterSet()
}
// https://dom.spec.whatwg.org/#dom-document-content_type
fn ContentType(&self) -> DOMString {
self.content_type.clone()
}
// https://dom.spec.whatwg.org/#dom-document-doctype
fn GetDoctype(&self) -> Option<Root<DocumentType>> {
self.upcast::<Node>().children().filter_map(Root::downcast).next()
}
// https://dom.spec.whatwg.org/#dom-document-documentelement
fn GetDocumentElement(&self) -> Option<Root<Element>> {
self.upcast::<Node>().child_elements().next()
}
// https://dom.spec.whatwg.org/#dom-document-getelementsbytagname
fn GetElementsByTagName(&self, qualified_name: DOMString) -> Root<HTMLCollection> {
let qualified_name = LocalName::from(&*qualified_name);
match self.tag_map.borrow_mut().entry(qualified_name.clone()) {
Occupied(entry) => Root::from_ref(entry.get()),
Vacant(entry) => {
let result = HTMLCollection::by_qualified_name(
&self.window, self.upcast(), qualified_name);
entry.insert(JS::from_ref(&*result));
result
}
}
}
// https://dom.spec.whatwg.org/#dom-document-getelementsbytagnamens
fn GetElementsByTagNameNS(&self,
maybe_ns: Option<DOMString>,
tag_name: DOMString)
-> Root<HTMLCollection> {
let ns = namespace_from_domstring(maybe_ns);
let local = LocalName::from(tag_name);
let qname = QualName::new(None, ns, local);
match self.tagns_map.borrow_mut().entry(qname.clone()) {
Occupied(entry) => Root::from_ref(entry.get()),
Vacant(entry) => {
let result = HTMLCollection::by_qual_tag_name(&self.window, self.upcast(), qname);
entry.insert(JS::from_ref(&*result));
result
}
}
}
// https://dom.spec.whatwg.org/#dom-document-getelementsbyclassname
fn GetElementsByClassName(&self, classes: DOMString) -> Root<HTMLCollection> {
let class_atoms: Vec<Atom> = split_html_space_chars(&classes)
.map(Atom::from)
.collect();
match self.classes_map.borrow_mut().entry(class_atoms.clone()) {
Occupied(entry) => Root::from_ref(entry.get()),
Vacant(entry) => {
let result = HTMLCollection::by_atomic_class_name(&self.window,
self.upcast(),
class_atoms);
entry.insert(JS::from_ref(&*result));
result
}
}
}
// https://dom.spec.whatwg.org/#dom-nonelementparentnode-getelementbyid
fn GetElementById(&self, id: DOMString) -> Option<Root<Element>> {
self.get_element_by_id(&Atom::from(id))
}
// https://dom.spec.whatwg.org/#dom-document-createelement
fn CreateElement(&self,
mut local_name: DOMString,
options: &ElementCreationOptions)
-> Fallible<Root<Element>> {
if xml_name_type(&local_name) == InvalidXMLName {
debug!("Not a valid element name");
return Err(Error::InvalidCharacter);
}
if self.is_html_document {
local_name.make_ascii_lowercase();
}
let ns = if self.is_html_document || self.content_type == "application/xhtml+xml" {
ns!(html)
} else {
ns!()
};
let name = QualName::new(None, ns, LocalName::from(local_name));
let is = options.is.as_ref().map(|is| LocalName::from(&**is));
Ok(Element::create(name, is, self, ElementCreator::ScriptCreated, CustomElementCreationMode::Synchronous))
}
// https://dom.spec.whatwg.org/#dom-document-createelementns
fn CreateElementNS(&self,
namespace: Option<DOMString>,
qualified_name: DOMString,
options: &ElementCreationOptions)
-> Fallible<Root<Element>> {
let (namespace, prefix, local_name) = validate_and_extract(namespace,
&qualified_name)?;
let name = QualName::new(prefix, namespace, local_name);
let is = options.is.as_ref().map(|is| LocalName::from(&**is));
Ok(Element::create(name, is, self, ElementCreator::ScriptCreated, CustomElementCreationMode::Synchronous))
}
// https://dom.spec.whatwg.org/#dom-document-createattribute
fn CreateAttribute(&self, mut local_name: DOMString) -> Fallible<Root<Attr>> {
if xml_name_type(&local_name) == InvalidXMLName {
debug!("Not a valid element name");
return Err(Error::InvalidCharacter);
}
if self.is_html_document {
local_name.make_ascii_lowercase();
}
let name = LocalName::from(local_name);
let value = AttrValue::String("".to_owned());
Ok(Attr::new(&self.window, name.clone(), value, name, ns!(), None, None))
}
// https://dom.spec.whatwg.org/#dom-document-createattributens
fn CreateAttributeNS(&self,
namespace: Option<DOMString>,
qualified_name: DOMString)
-> Fallible<Root<Attr>> {
let (namespace, prefix, local_name) = validate_and_extract(namespace,
&qualified_name)?;
let value = AttrValue::String("".to_owned());
let qualified_name = LocalName::from(qualified_name);
Ok(Attr::new(&self.window,
local_name,
value,
qualified_name,
namespace,
prefix,
None))
}
// https://dom.spec.whatwg.org/#dom-document-createdocumentfragment
fn CreateDocumentFragment(&self) -> Root<DocumentFragment> {
DocumentFragment::new(self)
}
// https://dom.spec.whatwg.org/#dom-document-createtextnode
fn CreateTextNode(&self, data: DOMString) -> Root<Text> {
Text::new(data, self)
}
// https://dom.spec.whatwg.org/#dom-document-createcomment
fn CreateComment(&self, data: DOMString) -> Root<Comment> {
Comment::new(data, self)
}
// https://dom.spec.whatwg.org/#dom-document-createprocessinginstruction
fn CreateProcessingInstruction(&self,
target: DOMString,
data: DOMString)
-> Fallible<Root<ProcessingInstruction>> {
// Step 1.
if xml_name_type(&target) == InvalidXMLName {
return Err(Error::InvalidCharacter);
}
// Step 2.
if data.contains("?>") {
return Err(Error::InvalidCharacter);
}
// Step 3.
Ok(ProcessingInstruction::new(target, data, self))
}
// https://dom.spec.whatwg.org/#dom-document-importnode
fn ImportNode(&self, node: &Node, deep: bool) -> Fallible<Root<Node>> {
// Step 1.
if node.is::<Document>() {
return Err(Error::NotSupported);
}
// Step 2.
let clone_children = if deep {
CloneChildrenFlag::CloneChildren
} else {
CloneChildrenFlag::DoNotCloneChildren
};
Ok(Node::clone(node, Some(self), clone_children))
}
// https://dom.spec.whatwg.org/#dom-document-adoptnode
fn AdoptNode(&self, node: &Node) -> Fallible<Root<Node>> {
// Step 1.
if node.is::<Document>() {
return Err(Error::NotSupported);
}
// Step 2.
Node::adopt(node, self);
// Step 3.
Ok(Root::from_ref(node))
}
// https://dom.spec.whatwg.org/#dom-document-createevent
fn CreateEvent(&self, mut interface: DOMString) -> Fallible<Root<Event>> {
interface.make_ascii_lowercase();
match &*interface {
"beforeunloadevent" =>
Ok(Root::upcast(BeforeUnloadEvent::new_uninitialized(&self.window))),
"closeevent" =>
Ok(Root::upcast(CloseEvent::new_uninitialized(self.window.upcast()))),
"customevent" =>
Ok(Root::upcast(CustomEvent::new_uninitialized(self.window.upcast()))),
"errorevent" =>
Ok(Root::upcast(ErrorEvent::new_uninitialized(self.window.upcast()))),
"events" | "event" | "htmlevents" | "svgevents" =>
Ok(Event::new_uninitialized(&self.window.upcast())),
"focusevent" =>
Ok(Root::upcast(FocusEvent::new_uninitialized(&self.window))),
"hashchangeevent" =>
Ok(Root::upcast(HashChangeEvent::new_uninitialized(&self.window))),
"keyboardevent" =>
Ok(Root::upcast(KeyboardEvent::new_uninitialized(&self.window))),
"messageevent" =>
Ok(Root::upcast(MessageEvent::new_uninitialized(self.window.upcast()))),
"mouseevent" | "mouseevents" =>
Ok(Root::upcast(MouseEvent::new_uninitialized(&self.window))),
"pagetransitionevent" =>
Ok(Root::upcast(PageTransitionEvent::new_uninitialized(&self.window))),
"popstateevent" =>
Ok(Root::upcast(PopStateEvent::new_uninitialized(&self.window))),
"progressevent" =>
Ok(Root::upcast(ProgressEvent::new_uninitialized(self.window.upcast()))),
"storageevent" => {
Ok(Root::upcast(StorageEvent::new_uninitialized(&self.window, "".into())))
},
"touchevent" =>
Ok(Root::upcast(
TouchEvent::new_uninitialized(&self.window,
&TouchList::new(&self.window, &[]),
&TouchList::new(&self.window, &[]),
&TouchList::new(&self.window, &[]),
)
)),
"uievent" | "uievents" =>
Ok(Root::upcast(UIEvent::new_uninitialized(&self.window))),
"webglcontextevent" =>
Ok(Root::upcast(WebGLContextEvent::new_uninitialized(&self.window))),
_ =>
Err(Error::NotSupported),
}
}
// https://html.spec.whatwg.org/multipage/#dom-document-lastmodified
fn LastModified(&self) -> DOMString {
match self.last_modified {
Some(ref t) => DOMString::from(t.clone()),
None => DOMString::from(time::now().strftime("%m/%d/%Y %H:%M:%S").unwrap().to_string()),
}
}
// https://dom.spec.whatwg.org/#dom-document-createrange
fn CreateRange(&self) -> Root<Range> {
Range::new_with_doc(self)
}
// https://dom.spec.whatwg.org/#dom-document-createnodeiteratorroot-whattoshow-filter
fn CreateNodeIterator(&self,
root: &Node,
what_to_show: u32,
filter: Option<Rc<NodeFilter>>)
-> Root<NodeIterator> {
NodeIterator::new(self, root, what_to_show, filter)
}
// https://w3c.github.io/touch-events/#idl-def-Document
fn CreateTouch(&self,
window: &Window,
target: &EventTarget,
identifier: i32,
page_x: Finite<f64>,
page_y: Finite<f64>,
screen_x: Finite<f64>,
screen_y: Finite<f64>)
-> Root<Touch> {
let client_x = Finite::wrap(*page_x - window.PageXOffset() as f64);
let client_y = Finite::wrap(*page_y - window.PageYOffset() as f64);
Touch::new(window,
identifier,
target,
screen_x,
screen_y,
client_x,
client_y,
page_x,
page_y)
}
// https://w3c.github.io/touch-events/#idl-def-document-createtouchlist(touch...)
fn CreateTouchList(&self, touches: &[&Touch]) -> Root<TouchList> {
TouchList::new(&self.window, &touches)
}
// https://dom.spec.whatwg.org/#dom-document-createtreewalker
fn CreateTreeWalker(&self,
root: &Node,
what_to_show: u32,
filter: Option<Rc<NodeFilter>>)
-> Root<TreeWalker> {
TreeWalker::new(self, root, what_to_show, filter)
}
// https://html.spec.whatwg.org/multipage/#document.title
fn Title(&self) -> DOMString {
let title = self.GetDocumentElement().and_then(|root| {
if root.namespace() == &ns!(svg) && root.local_name() == &local_name!("svg") {
// Step 1.
root.upcast::<Node>()
.child_elements()
.find(|node| {
node.namespace() == &ns!(svg) && node.local_name() == &local_name!("title")
})
.map(Root::upcast::<Node>)
} else {
// Step 2.
root.upcast::<Node>()
.traverse_preorder()
.find(|node| node.is::<HTMLTitleElement>())
}
});
match title {
None => DOMString::new(),
Some(ref title) => {
// Steps 3-4.
let value = title.child_text_content();
DOMString::from(str_join(split_html_space_chars(&value), " "))
},
}
}
// https://html.spec.whatwg.org/multipage/#document.title
fn SetTitle(&self, title: DOMString) {
let root = match self.GetDocumentElement() {
Some(root) => root,
None => return,
};
let elem = if root.namespace() == &ns!(svg) && root.local_name() == &local_name!("svg") {
let elem = root.upcast::<Node>().child_elements().find(|node| {
node.namespace() == &ns!(svg) && node.local_name() == &local_name!("title")
});
match elem {
Some(elem) => Root::upcast::<Node>(elem),
None => {
let name = QualName::new(None, ns!(svg), local_name!("title"));
let elem = Element::create(name,
None,
self,
ElementCreator::ScriptCreated,
CustomElementCreationMode::Synchronous);
let parent = root.upcast::<Node>();
let child = elem.upcast::<Node>();
parent.InsertBefore(child, parent.GetFirstChild().r())
.unwrap()
}
}
} else if root.namespace() == &ns!(html) {
let elem = root.upcast::<Node>()
.traverse_preorder()
.find(|node| node.is::<HTMLTitleElement>());
match elem {
Some(elem) => elem,
None => {
match self.GetHead() {
Some(head) => {
let name = QualName::new(None, ns!(html), local_name!("title"));
let elem = Element::create(name,
None,
self,
ElementCreator::ScriptCreated,
CustomElementCreationMode::Synchronous);
head.upcast::<Node>()
.AppendChild(elem.upcast())
.unwrap()
},
None => return,
}
}
}
} else {
return;
};
elem.SetTextContent(Some(title));
}
// https://html.spec.whatwg.org/multipage/#dom-document-head
fn GetHead(&self) -> Option<Root<HTMLHeadElement>> {
self.get_html_element()
.and_then(|root| root.upcast::<Node>().children().filter_map(Root::downcast).next())
}
// https://html.spec.whatwg.org/multipage/#dom-document-currentscript
fn GetCurrentScript(&self) -> Option<Root<HTMLScriptElement>> {
self.current_script.get()
}
// https://html.spec.whatwg.org/multipage/#dom-document-body
fn GetBody(&self) -> Option<Root<HTMLElement>> {
self.get_html_element().and_then(|root| {
let node = root.upcast::<Node>();
node.children().find(|child| {
match child.type_id() {
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLBodyElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLFrameSetElement)) => true,
_ => false
}
}).map(|node| Root::downcast(node).unwrap())
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-body
fn SetBody(&self, new_body: Option<&HTMLElement>) -> ErrorResult {
// Step 1.
let new_body = match new_body {
Some(new_body) => new_body,
None => return Err(Error::HierarchyRequest),
};
let node = new_body.upcast::<Node>();
match node.type_id() {
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLBodyElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLFrameSetElement)) => {}
_ => return Err(Error::HierarchyRequest),
}
// Step 2.
let old_body = self.GetBody();
if old_body.r() == Some(new_body) {
return Ok(());
}
match (self.get_html_element(), &old_body) {
// Step 3.
(Some(ref root), &Some(ref child)) => {
let root = root.upcast::<Node>();
root.ReplaceChild(new_body.upcast(), child.upcast()).unwrap();
},
// Step 4.
(None, _) => return Err(Error::HierarchyRequest),
// Step 5.
(Some(ref root), &None) => {
let root = root.upcast::<Node>();
root.AppendChild(new_body.upcast()).unwrap();
}
}
Ok(())
}
// https://html.spec.whatwg.org/multipage/#dom-document-getelementsbyname
fn GetElementsByName(&self, name: DOMString) -> Root<NodeList> {
self.create_node_list(|node| {
let element = match node.downcast::<Element>() {
Some(element) => element,
None => return false,
};
if element.namespace() != &ns!(html) {
return false;
}
element.get_attribute(&ns!(), &local_name!("name"))
.map_or(false, |attr| &**attr.value() == &*name)
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-images
fn Images(&self) -> Root<HTMLCollection> {
self.images.or_init(|| {
let filter = box ImagesFilter;
HTMLCollection::create(&self.window, self.upcast(), filter)
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-embeds
fn Embeds(&self) -> Root<HTMLCollection> {
self.embeds.or_init(|| {
let filter = box EmbedsFilter;
HTMLCollection::create(&self.window, self.upcast(), filter)
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-plugins
fn Plugins(&self) -> Root<HTMLCollection> {
self.Embeds()
}
// https://html.spec.whatwg.org/multipage/#dom-document-links
fn Links(&self) -> Root<HTMLCollection> {
self.links.or_init(|| {
let filter = box LinksFilter;
HTMLCollection::create(&self.window, self.upcast(), filter)
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-forms
fn Forms(&self) -> Root<HTMLCollection> {
self.forms.or_init(|| {
let filter = box FormsFilter;
HTMLCollection::create(&self.window, self.upcast(), filter)
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-scripts
fn Scripts(&self) -> Root<HTMLCollection> {
self.scripts.or_init(|| {
let filter = box ScriptsFilter;
HTMLCollection::create(&self.window, self.upcast(), filter)
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-anchors
fn Anchors(&self) -> Root<HTMLCollection> {
self.anchors.or_init(|| {
let filter = box AnchorsFilter;
HTMLCollection::create(&self.window, self.upcast(), filter)
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-applets
fn Applets(&self) -> Root<HTMLCollection> {
// FIXME: This should be return OBJECT elements containing applets.
self.applets.or_init(|| {
let filter = box AppletsFilter;
HTMLCollection::create(&self.window, self.upcast(), filter)
})
}
// https://html.spec.whatwg.org/multipage/#dom-document-location
fn GetLocation(&self) -> Option<Root<Location>> {
self.browsing_context().map(|_| self.location.or_init(|| Location::new(&self.window)))
}
// https://dom.spec.whatwg.org/#dom-parentnode-children
fn Children(&self) -> Root<HTMLCollection> {
HTMLCollection::children(&self.window, self.upcast())
}
// https://dom.spec.whatwg.org/#dom-parentnode-firstelementchild
fn GetFirstElementChild(&self) -> Option<Root<Element>> {
self.upcast::<Node>().child_elements().next()
}
// https://dom.spec.whatwg.org/#dom-parentnode-lastelementchild
fn GetLastElementChild(&self) -> Option<Root<Element>> {
self.upcast::<Node>().rev_children().filter_map(Root::downcast).next()
}
// https://dom.spec.whatwg.org/#dom-parentnode-childelementcount
fn ChildElementCount(&self) -> u32 {
self.upcast::<Node>().child_elements().count() as u32
}
// https://dom.spec.whatwg.org/#dom-parentnode-prepend
fn Prepend(&self, nodes: Vec<NodeOrString>) -> ErrorResult {
self.upcast::<Node>().prepend(nodes)
}
// https://dom.spec.whatwg.org/#dom-parentnode-append
fn Append(&self, nodes: Vec<NodeOrString>) -> ErrorResult {
self.upcast::<Node>().append(nodes)
}
// https://dom.spec.whatwg.org/#dom-parentnode-queryselector
fn QuerySelector(&self, selectors: DOMString) -> Fallible<Option<Root<Element>>> {
let root = self.upcast::<Node>();
root.query_selector(selectors)
}
// https://dom.spec.whatwg.org/#dom-parentnode-queryselectorall
fn QuerySelectorAll(&self, selectors: DOMString) -> Fallible<Root<NodeList>> {
let root = self.upcast::<Node>();
root.query_selector_all(selectors)
}
// https://html.spec.whatwg.org/multipage/#dom-document-readystate
fn ReadyState(&self) -> DocumentReadyState {
self.ready_state.get()
}
// https://html.spec.whatwg.org/multipage/#dom-document-defaultview
fn GetDefaultView(&self) -> Option<Root<Window>> {
if self.has_browsing_context {
Some(Root::from_ref(&*self.window))
} else {
None
}
}
// https://html.spec.whatwg.org/multipage/#dom-document-cookie
fn GetCookie(&self) -> Fallible<DOMString> {
if self.is_cookie_averse() {
return Ok(DOMString::new());
}
if !self.origin.is_tuple() {
return Err(Error::Security);
}
let url = self.url();
let (tx, rx) = ipc::channel().unwrap();
let _ = self.window
.upcast::<GlobalScope>()
.resource_threads()
.send(GetCookiesForUrl(url, tx, NonHTTP));
let cookies = rx.recv().unwrap();
Ok(cookies.map_or(DOMString::new(), DOMString::from))
}
// https://html.spec.whatwg.org/multipage/#dom-document-cookie
fn SetCookie(&self, cookie: DOMString) -> ErrorResult {
if self.is_cookie_averse() {
return Ok(());
}
if !self.origin.is_tuple() {
return Err(Error::Security);
}
if let Ok(cookie_header) = SetCookie::parse_header(&vec![cookie.to_string().into_bytes()]) {
let cookies = cookie_header.0.into_iter().filter_map(|cookie| {
cookie_rs::Cookie::parse(cookie).ok().map(Serde)
}).collect();
let _ = self.window
.upcast::<GlobalScope>()
.resource_threads()
.send(SetCookiesForUrl(self.url(), cookies, NonHTTP));
}
Ok(())
}
// https://html.spec.whatwg.org/multipage/#dom-document-bgcolor
fn BgColor(&self) -> DOMString {
self.get_body_attribute(&local_name!("bgcolor"))
}
// https://html.spec.whatwg.org/multipage/#dom-document-bgcolor
fn SetBgColor(&self, value: DOMString) {
self.set_body_attribute(&local_name!("bgcolor"), value)
}
// https://html.spec.whatwg.org/multipage/#dom-document-fgcolor
fn FgColor(&self) -> DOMString {
self.get_body_attribute(&local_name!("text"))
}
// https://html.spec.whatwg.org/multipage/#dom-document-fgcolor
fn SetFgColor(&self, value: DOMString) {
self.set_body_attribute(&local_name!("text"), value)
}
#[allow(unsafe_code)]
// https://html.spec.whatwg.org/multipage/#dom-tree-accessors:dom-document-nameditem-filter
unsafe fn NamedGetter(&self, _cx: *mut JSContext, name: DOMString) -> Option<NonZero<*mut JSObject>> {
#[derive(JSTraceable, HeapSizeOf)]
struct NamedElementFilter {
name: Atom,
}
impl CollectionFilter for NamedElementFilter {
fn filter(&self, elem: &Element, _root: &Node) -> bool {
filter_by_name(&self.name, elem.upcast())
}
}
// https://html.spec.whatwg.org/multipage/#dom-document-nameditem-filter
fn filter_by_name(name: &Atom, node: &Node) -> bool {
let html_elem_type = match node.type_id() {
NodeTypeId::Element(ElementTypeId::HTMLElement(type_)) => type_,
_ => return false,
};
let elem = match node.downcast::<Element>() {
Some(elem) => elem,
None => return false,
};
match html_elem_type {
HTMLElementTypeId::HTMLAppletElement => {
match elem.get_attribute(&ns!(), &local_name!("name")) {
Some(ref attr) if attr.value().as_atom() == name => true,
_ => {
match elem.get_attribute(&ns!(), &local_name!("id")) {
Some(ref attr) => attr.value().as_atom() == name,
None => false,
}
},
}
},
HTMLElementTypeId::HTMLFormElement => {
match elem.get_attribute(&ns!(), &local_name!("name")) {
Some(ref attr) => attr.value().as_atom() == name,
None => false,
}
},
HTMLElementTypeId::HTMLImageElement => {
match elem.get_attribute(&ns!(), &local_name!("name")) {
Some(ref attr) => {
if attr.value().as_atom() == name {
true
} else {
match elem.get_attribute(&ns!(), &local_name!("id")) {
Some(ref attr) => attr.value().as_atom() == name,
None => false,
}
}
},
None => false,
}
},
// TODO: Handle <embed>, <iframe> and <object>.
_ => false,
}
}
let name = Atom::from(name);
let root = self.upcast::<Node>();
{
// Step 1.
let mut elements = root.traverse_preorder()
.filter(|node| filter_by_name(&name, &node))
.peekable();
if let Some(first) = elements.next() {
if elements.peek().is_none() {
// TODO: Step 2.
// Step 3.
return Some(NonZero::new(first.reflector().get_jsobject().get()));
}
} else {
return None;
}
}
// Step 4.
let filter = NamedElementFilter {
name: name,
};
let collection = HTMLCollection::create(self.window(), root, box filter);
Some(NonZero::new(collection.reflector().get_jsobject().get()))
}
// https://html.spec.whatwg.org/multipage/#dom-tree-accessors:supported-property-names
fn SupportedPropertyNames(&self) -> Vec<DOMString> {
// FIXME: unimplemented (https://github.com/servo/servo/issues/7273)
vec![]
}
// https://html.spec.whatwg.org/multipage/#dom-document-clear
fn Clear(&self) {
// This method intentionally does nothing
}
// https://html.spec.whatwg.org/multipage/#dom-document-captureevents
fn CaptureEvents(&self) {
// This method intentionally does nothing
}
// https://html.spec.whatwg.org/multipage/#dom-document-releaseevents
fn ReleaseEvents(&self) {
// This method intentionally does nothing
}
// https://html.spec.whatwg.org/multipage/#globaleventhandlers
global_event_handlers!();
// https://html.spec.whatwg.org/multipage/#handler-onreadystatechange
event_handler!(readystatechange, GetOnreadystatechange, SetOnreadystatechange);
#[allow(unsafe_code)]
// https://drafts.csswg.org/cssom-view/#dom-document-elementfrompoint
fn ElementFromPoint(&self, x: Finite<f64>, y: Finite<f64>) -> Option<Root<Element>> {
let x = *x as f32;
let y = *y as f32;
let point = &Point2D::new(x, y);
let window = window_from_node(self);
let viewport = window.window_size().unwrap().initial_viewport;
if self.browsing_context().is_none() {
return None;
}
if x < 0.0 || y < 0.0 || x > viewport.width || y > viewport.height {
return None;
}
match self.window.hit_test_query(*point, false) {
Some(untrusted_node_address) => {
let js_runtime = unsafe { JS_GetRuntime(window.get_cx()) };
let node = unsafe {
node::from_untrusted_node_address(js_runtime, untrusted_node_address)
};
let parent_node = node.GetParentNode().unwrap();
let element_ref = node.downcast::<Element>().unwrap_or_else(|| {
parent_node.downcast::<Element>().unwrap()
});
Some(Root::from_ref(element_ref))
},
None => self.GetDocumentElement()
}
}
#[allow(unsafe_code)]
// https://drafts.csswg.org/cssom-view/#dom-document-elementsfrompoint
fn ElementsFromPoint(&self, x: Finite<f64>, y: Finite<f64>) -> Vec<Root<Element>> {
let x = *x as f32;
let y = *y as f32;
let point = &Point2D::new(x, y);
let window = window_from_node(self);
let viewport = window.window_size().unwrap().initial_viewport;
if self.browsing_context().is_none() {
return vec!();
}
// Step 2
if x < 0.0 || y < 0.0 || x > viewport.width || y > viewport.height {
return vec!();
}
let js_runtime = unsafe { JS_GetRuntime(window.get_cx()) };
// Step 1 and Step 3
let mut elements: Vec<Root<Element>> = self.nodes_from_point(point).iter()
.flat_map(|&untrusted_node_address| {
let node = unsafe {
node::from_untrusted_node_address(js_runtime, untrusted_node_address)
};
Root::downcast::<Element>(node)
}).collect();
// Step 4
if let Some(root_element) = self.GetDocumentElement() {
if elements.last() != Some(&root_element) {
elements.push(root_element);
}
}
// Step 5
elements
}
// https://html.spec.whatwg.org/multipage/#dom-document-open
fn Open(&self, type_: DOMString, replace: DOMString) -> Fallible<Root<Document>> {
if !self.is_html_document() {
// Step 1.
return Err(Error::InvalidState);
}
// Step 2.
// TODO: handle throw-on-dynamic-markup-insertion counter.
if !self.is_active() {
// Step 3.
return Ok(Root::from_ref(self));
}
let entry_responsible_document = GlobalScope::entry().as_window().Document();
// This check is same-origin not same-origin-domain.
// https://github.com/whatwg/html/issues/2282
// https://github.com/whatwg/html/pull/2288
if !self.origin.same_origin(&entry_responsible_document.origin) {
// Step 4.
return Err(Error::Security);
}
if self.get_current_parser().map_or(false, |parser| parser.script_nesting_level() > 0) {
// Step 5.
return Ok(Root::from_ref(self));
}
// Step 6.
// TODO: ignore-opens-during-unload counter check.
// Step 7: first argument already bound to `type_`.
// Step 8.
// TODO: check session history's state.
let replace = replace.eq_ignore_ascii_case("replace");
// Step 9.
// TODO: salvageable flag.
// Step 10.
// TODO: prompt to unload.
window_from_node(self).set_navigation_start();
// Step 11.
// TODO: unload.
// Step 12.
self.abort();
// Step 13.
for node in self.upcast::<Node>().traverse_preorder() {
node.upcast::<EventTarget>().remove_all_listeners();
}
// Step 14.
// TODO: remove any tasks associated with the Document in any task source.
// Step 15.
Node::replace_all(None, self.upcast::<Node>());
// Steps 16-18.
// Let's not?
// TODO: https://github.com/whatwg/html/issues/1698
// Step 19.
self.implementation.set(None);
self.location.set(None);
self.images.set(None);
self.embeds.set(None);
self.links.set(None);
self.forms.set(None);
self.scripts.set(None);
self.anchors.set(None);
self.applets.set(None);
*self.stylesheets.borrow_mut() = None;
self.stylesheets_changed_since_reflow.set(true);
self.animation_frame_ident.set(0);
self.animation_frame_list.borrow_mut().clear();
self.pending_restyles.borrow_mut().clear();
self.target_element.set(None);
*self.last_click_info.borrow_mut() = None;
// Step 20.
self.set_encoding(UTF_8);
// Step 21.
// TODO: reload override buffer.
// Step 22.
// TODO: salvageable flag.
let url = entry_responsible_document.url();
// Step 23.
self.set_url(url.clone());
// Step 24.
// TODO: mute iframe load.
// Step 27.
let type_ = if type_.eq_ignore_ascii_case("replace") {
"text/html"
} else if let Some(position) = type_.find(';') {
&type_[0..position]
} else {
&*type_
};
let type_ = type_.trim_matches(HTML_SPACE_CHARACTERS);
// Step 25.
let resource_threads =
self.window.upcast::<GlobalScope>().resource_threads().clone();
*self.loader.borrow_mut() =
DocumentLoader::new_with_threads(resource_threads, Some(url.clone()));
ServoParser::parse_html_script_input(self, url, type_);
// Step 26.
self.ready_state.set(DocumentReadyState::Interactive);
// Step 28 is handled when creating the parser in step 25.
// Step 29.
// TODO: truncate session history.
// Step 30.
// TODO: remove history traversal tasks.
// Step 31.
// TODO: remove earlier entries.
if !replace {
// Step 32.
// TODO: add history entry.
}
// Step 33.
// TODO: clear fired unload flag.
// Step 34 is handled when creating the parser in step 25.
// Step 35.
Ok(Root::from_ref(self))
}
// https://html.spec.whatwg.org/multipage/#dom-document-write
fn Write(&self, text: Vec<DOMString>) -> ErrorResult {
if !self.is_html_document() {
// Step 1.
return Err(Error::InvalidState);
}
// Step 2.
// TODO: handle throw-on-dynamic-markup-insertion counter.
if !self.is_active() {
// Step 3.
return Ok(());
}
let parser = match self.get_current_parser() {
Some(ref parser) if parser.can_write() => Root::from_ref(&**parser),
_ => {
// Either there is no parser, which means the parsing ended;
// or script nesting level is 0, which means the method was
// called from outside a parser-executed script.
if self.ignore_destructive_writes_counter.get() > 0 {
// Step 4.
// TODO: handle ignore-opens-during-unload counter.
return Ok(());
}
// Step 5.
self.Open("text/html".into(), "".into())?;
self.get_current_parser().unwrap()
}
};
// Step 7.
// TODO: handle reload override buffer.
// Steps 6-8.
parser.write(text);
// Step 9.
Ok(())
}
// https://html.spec.whatwg.org/multipage/#dom-document-writeln
fn Writeln(&self, mut text: Vec<DOMString>) -> ErrorResult {
text.push("\n".into());
self.Write(text)
}
// https://html.spec.whatwg.org/multipage/#dom-document-close
fn Close(&self) -> ErrorResult {
if !self.is_html_document() {
// Step 1.
return Err(Error::InvalidState);
}
// Step 2.
// TODO: handle throw-on-dynamic-markup-insertion counter.
let parser = match self.get_current_parser() {
Some(ref parser) if parser.is_script_created() => Root::from_ref(&**parser),
_ => {
// Step 3.
return Ok(());
}
};
// Step 4-6.
parser.close();
Ok(())
}
// https://html.spec.whatwg.org/multipage/#documentandelementeventhandlers
document_and_element_event_handlers!();
// https://fullscreen.spec.whatwg.org/#handler-document-onfullscreenerror
event_handler!(fullscreenerror, GetOnfullscreenerror, SetOnfullscreenerror);
// https://fullscreen.spec.whatwg.org/#handler-document-onfullscreenchange
event_handler!(fullscreenchange, GetOnfullscreenchange, SetOnfullscreenchange);
// https://fullscreen.spec.whatwg.org/#dom-document-fullscreenenabled
fn FullscreenEnabled(&self) -> bool {
self.get_allow_fullscreen()
}
// https://fullscreen.spec.whatwg.org/#dom-document-fullscreen
fn Fullscreen(&self) -> bool {
self.fullscreen_element.get().is_some()
}
// https://fullscreen.spec.whatwg.org/#dom-document-fullscreenelement
fn GetFullscreenElement(&self) -> Option<Root<Element>> {
// TODO ShadowRoot
self.fullscreen_element.get()
}
#[allow(unrooted_must_root)]
// https://fullscreen.spec.whatwg.org/#dom-document-exitfullscreen
fn ExitFullscreen(&self) -> Rc<Promise> {
self.exit_fullscreen()
}
}
fn update_with_current_time_ms(marker: &Cell<u64>) {
if marker.get() == Default::default() {
let time = time::get_time();
let current_time_ms = time.sec * 1000 + time.nsec as i64 / 1000000;
marker.set(current_time_ms as u64);
}
}
/// https://w3c.github.io/webappsec-referrer-policy/#determine-policy-for-token
pub fn determine_policy_for_token(token: &str) -> Option<ReferrerPolicy> {
let lower = token.to_lowercase();
return match lower.as_ref() {
"never" | "no-referrer" => Some(ReferrerPolicy::NoReferrer),
"default" | "no-referrer-when-downgrade" => Some(ReferrerPolicy::NoReferrerWhenDowngrade),
"origin" => Some(ReferrerPolicy::Origin),
"same-origin" => Some(ReferrerPolicy::SameOrigin),
"strict-origin" => Some(ReferrerPolicy::StrictOrigin),
"strict-origin-when-cross-origin" => Some(ReferrerPolicy::StrictOriginWhenCrossOrigin),
"origin-when-cross-origin" => Some(ReferrerPolicy::OriginWhenCrossOrigin),
"always" | "unsafe-url" => Some(ReferrerPolicy::UnsafeUrl),
"" => Some(ReferrerPolicy::NoReferrer),
_ => None,
}
}
pub struct DocumentProgressHandler {
addr: Trusted<Document>
}
impl DocumentProgressHandler {
pub fn new(addr: Trusted<Document>) -> DocumentProgressHandler {
DocumentProgressHandler {
addr: addr
}
}
fn set_ready_state_complete(&self) {
let document = self.addr.root();
document.set_ready_state(DocumentReadyState::Complete);
}
fn dispatch_load(&self) {
let document = self.addr.root();
if document.browsing_context().is_none() {
return;
}
let window = document.window();
let event = Event::new(window.upcast(),
atom!("load"),
EventBubbles::DoesNotBubble,
EventCancelable::NotCancelable);
let wintarget = window.upcast::<EventTarget>();
event.set_trusted(true);
// http://w3c.github.io/navigation-timing/#widl-PerformanceNavigationTiming-loadEventStart
update_with_current_time_ms(&document.load_event_start);
debug!("About to dispatch load for {:?}", document.url());
let _ = wintarget.dispatch_event_with_target(document.upcast(), &event);
// http://w3c.github.io/navigation-timing/#widl-PerformanceNavigationTiming-loadEventEnd
update_with_current_time_ms(&document.load_event_end);
window.reflow(ReflowGoal::ForDisplay,
ReflowQueryType::NoQuery,
ReflowReason::DocumentLoaded);
document.notify_constellation_load();
}
}
impl Runnable for DocumentProgressHandler {
fn name(&self) -> &'static str { "DocumentProgressHandler" }
fn handler(self: Box<DocumentProgressHandler>) {
let document = self.addr.root();
let window = document.window();
if window.is_alive() {
self.set_ready_state_complete();
self.dispatch_load();
if let Some(fragment) = document.url().fragment() {
document.check_and_scroll_fragment(fragment);
}
}
}
}
/// Specifies the type of focus event that is sent to a pipeline
#[derive(Copy, Clone, PartialEq)]
pub enum FocusType {
Element, // The first focus message - focus the element itself
Parent, // Focusing a parent element (an iframe)
}
/// Focus events
pub enum FocusEventType {
Focus, // Element gained focus. Doesn't bubble.
Blur, // Element lost focus. Doesn't bubble.
}
/// A fake `requestAnimationFrame()` callback—"fake" because it is not triggered by the video
/// refresh but rather a simple timer.
///
/// If the page is observed to be using `requestAnimationFrame()` for non-animation purposes (i.e.
/// without mutating the DOM), then we fall back to simple timeouts to save energy over video
/// refresh.
#[derive(JSTraceable, HeapSizeOf)]
pub struct FakeRequestAnimationFrameCallback {
/// The document.
#[ignore_heap_size_of = "non-owning"]
document: Trusted<Document>,
}
impl FakeRequestAnimationFrameCallback {
pub fn invoke(self) {
let document = self.document.root();
document.run_the_animation_frame_callbacks();
}
}
#[derive(HeapSizeOf, JSTraceable)]
pub enum AnimationFrameCallback {
DevtoolsFramerateTick { actor_name: String },
FrameRequestCallback {
#[ignore_heap_size_of = "Rc is hard"]
callback: Rc<FrameRequestCallback>
},
}
impl AnimationFrameCallback {
fn call(&self, document: &Document, now: f64) {
match *self {
AnimationFrameCallback::DevtoolsFramerateTick { ref actor_name } => {
let msg = ScriptToDevtoolsControlMsg::FramerateTick(actor_name.clone(), now);
let devtools_sender = document.window().upcast::<GlobalScope>().devtools_chan().unwrap();
devtools_sender.send(msg).unwrap();
}
AnimationFrameCallback::FrameRequestCallback { ref callback } => {
// TODO(jdm): The spec says that any exceptions should be suppressed:
// https://github.com/servo/servo/issues/6928
let _ = callback.Call__(Finite::wrap(now), ExceptionHandling::Report);
}
}
}
}
#[derive(Default, HeapSizeOf, JSTraceable)]
#[must_root]
struct PendingInOrderScriptVec {
scripts: DOMRefCell<VecDeque<PendingScript>>,
}
impl PendingInOrderScriptVec {
fn is_empty(&self) -> bool {
self.scripts.borrow().is_empty()
}
fn push(&self, element: &HTMLScriptElement) {
self.scripts.borrow_mut().push_back(PendingScript::new(element));
}
fn loaded(&self, element: &HTMLScriptElement, result: ScriptResult) {
let mut scripts = self.scripts.borrow_mut();
let mut entry = scripts.iter_mut().find(|entry| &*entry.element == element).unwrap();
entry.loaded(result);
}
fn take_next_ready_to_be_executed(&self) -> Option<(Root<HTMLScriptElement>, ScriptResult)> {
let mut scripts = self.scripts.borrow_mut();
let pair = scripts.front_mut().and_then(PendingScript::take_result);
if pair.is_none() {
return None;
}
scripts.pop_front();
pair
}
fn clear(&self) {
*self.scripts.borrow_mut() = Default::default();
}
}
#[derive(HeapSizeOf, JSTraceable)]
#[must_root]
struct PendingScript {
element: JS<HTMLScriptElement>,
load: Option<ScriptResult>,
}
impl PendingScript {
fn new(element: &HTMLScriptElement) -> Self {
Self { element: JS::from_ref(element), load: None }
}
fn new_with_load(element: &HTMLScriptElement, load: Option<ScriptResult>) -> Self {
Self { element: JS::from_ref(element), load }
}
fn loaded(&mut self, result: ScriptResult) {
assert!(self.load.is_none());
self.load = Some(result);
}
fn take_result(&mut self) -> Option<(Root<HTMLScriptElement>, ScriptResult)> {
self.load.take().map(|result| (Root::from_ref(&*self.element), result))
}
}
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