/
htmlbodyelement.rs
206 lines (179 loc) · 7.83 KB
/
htmlbodyelement.rs
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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 cssparser::RGBA;
use dom::attr::Attr;
use dom::bindings::codegen::Bindings::HTMLBodyElementBinding::{self, HTMLBodyElementMethods};
use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
use dom::bindings::inheritance::Castable;
use dom::bindings::root::{LayoutDom, DomRoot};
use dom::bindings::str::DOMString;
use dom::document::Document;
use dom::element::{AttributeMutation, Element, RawLayoutElementHelpers};
use dom::eventtarget::EventTarget;
use dom::globalscope::GlobalScope;
use dom::htmlelement::HTMLElement;
use dom::node::{Node, document_from_node, window_from_node};
use dom::virtualmethods::VirtualMethods;
use dom_struct::dom_struct;
use html5ever::{LocalName, Prefix};
use script_traits::ScriptMsg;
use servo_url::ServoUrl;
use style::attr::AttrValue;
use time;
/// How long we should wait before performing the initial reflow after `<body>` is parsed, in
/// nanoseconds.
const INITIAL_REFLOW_DELAY: u64 = 200_000_000;
#[dom_struct]
pub struct HTMLBodyElement {
htmlelement: HTMLElement,
}
impl HTMLBodyElement {
fn new_inherited(local_name: LocalName, prefix: Option<Prefix>, document: &Document)
-> HTMLBodyElement {
HTMLBodyElement {
htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
}
}
#[allow(unrooted_must_root)]
pub fn new(local_name: LocalName, prefix: Option<Prefix>, document: &Document)
-> DomRoot<HTMLBodyElement> {
Node::reflect_node(box HTMLBodyElement::new_inherited(local_name, prefix, document),
document,
HTMLBodyElementBinding::Wrap)
}
/// https://drafts.csswg.org/cssom-view/#the-html-body-element
pub fn is_the_html_body_element(&self) -> bool {
let self_node = self.upcast::<Node>();
let root_elem = self.upcast::<Element>().root_element();
let root_node = root_elem.upcast::<Node>();
root_node.is_parent_of(self_node) &&
self_node.preceding_siblings().all(|n| !n.is::<HTMLBodyElement>())
}
}
impl HTMLBodyElementMethods for HTMLBodyElement {
// https://html.spec.whatwg.org/multipage/#dom-body-bgcolor
make_getter!(BgColor, "bgcolor");
// https://html.spec.whatwg.org/multipage/#dom-body-bgcolor
make_legacy_color_setter!(SetBgColor, "bgcolor");
// https://html.spec.whatwg.org/multipage/#dom-body-text
make_getter!(Text, "text");
// https://html.spec.whatwg.org/multipage/#dom-body-text
make_legacy_color_setter!(SetText, "text");
// https://html.spec.whatwg.org/multipage/#dom-body-background
make_getter!(Background, "background");
// https://html.spec.whatwg.org/multipage/#dom-body-background
fn SetBackground(&self, input: DOMString) {
let value = AttrValue::from_resolved_url(
&document_from_node(self).base_url(),
input.into(),
);
self.upcast::<Element>().set_attribute(&local_name!("background"), value);
}
// https://html.spec.whatwg.org/multipage/#windoweventhandlers
window_event_handlers!(ForwardToWindow);
}
pub trait HTMLBodyElementLayoutHelpers {
fn get_background_color(&self) -> Option<RGBA>;
fn get_color(&self) -> Option<RGBA>;
fn get_background(&self) -> Option<ServoUrl>;
}
impl HTMLBodyElementLayoutHelpers for LayoutDom<HTMLBodyElement> {
#[allow(unsafe_code)]
fn get_background_color(&self) -> Option<RGBA> {
unsafe {
(*self.upcast::<Element>().unsafe_get())
.get_attr_for_layout(&ns!(), &local_name!("bgcolor"))
.and_then(AttrValue::as_color)
.cloned()
}
}
#[allow(unsafe_code)]
fn get_color(&self) -> Option<RGBA> {
unsafe {
(*self.upcast::<Element>().unsafe_get())
.get_attr_for_layout(&ns!(), &local_name!("text"))
.and_then(AttrValue::as_color)
.cloned()
}
}
#[allow(unsafe_code)]
fn get_background(&self) -> Option<ServoUrl> {
unsafe {
(*self.upcast::<Element>().unsafe_get())
.get_attr_for_layout(&ns!(), &local_name!("background"))
.and_then(AttrValue::as_resolved_url)
.cloned()
}
}
}
impl VirtualMethods for HTMLBodyElement {
fn super_type(&self) -> Option<&VirtualMethods> {
Some(self.upcast::<HTMLElement>() as &VirtualMethods)
}
fn attribute_affects_presentational_hints(&self, attr: &Attr) -> bool {
if attr.local_name() == &local_name!("bgcolor") {
return true;
}
self.super_type().unwrap().attribute_affects_presentational_hints(attr)
}
fn bind_to_tree(&self, tree_in_doc: bool) {
if let Some(ref s) = self.super_type() {
s.bind_to_tree(tree_in_doc);
}
if !tree_in_doc {
return
}
let window = window_from_node(self);
let document = window.Document();
document.set_reflow_timeout(time::precise_time_ns() + INITIAL_REFLOW_DELAY);
let event = ScriptMsg::HeadParsed;
window.upcast::<GlobalScope>().script_to_constellation_chan().send(event).unwrap();
}
fn parse_plain_attribute(&self, name: &LocalName, value: DOMString) -> AttrValue {
match *name {
local_name!("bgcolor") |
local_name!("text") => AttrValue::from_legacy_color(value.into()),
local_name!("background") => {
AttrValue::from_resolved_url(
&document_from_node(self).base_url(),
value.into(),
)
},
_ => self.super_type().unwrap().parse_plain_attribute(name, value),
}
}
fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
let do_super_mutate = match (attr.local_name(), mutation) {
(name, AttributeMutation::Set(_)) if name.starts_with("on") => {
let window = window_from_node(self);
// https://html.spec.whatwg.org/multipage/
// #event-handlers-on-elements,-document-objects,-and-window-objects:event-handlers-3
match name {
&local_name!("onfocus") | &local_name!("onload") | &local_name!("onscroll") |
&local_name!("onafterprint") | &local_name!("onbeforeprint") |
&local_name!("onbeforeunload") | &local_name!("onhashchange") |
&local_name!("onlanguagechange") | &local_name!("onmessage") |
&local_name!("onoffline") | &local_name!("ononline") |
&local_name!("onpagehide") | &local_name!("onpageshow") |
&local_name!("onpopstate") | &local_name!("onstorage") |
&local_name!("onresize") | &local_name!("onunload") | &local_name!("onerror")
=> {
let evtarget = window.upcast::<EventTarget>(); // forwarded event
let source_line = 1; //TODO(#9604) obtain current JS execution line
evtarget.set_event_handler_uncompiled(window.get_url(),
source_line,
&name[2..],
DOMString::from((**attr.value()).to_owned()));
false
}
_ => true, // HTMLElement::attribute_mutated will take care of this.
}
},
_ => true,
};
if do_super_mutate {
self.super_type().unwrap().attribute_mutated(attr, mutation);
}
}
}