Implement MediaList interface

This commit is contained in:
Nazım Can Altınova 2016-12-02 01:19:20 +03:00
parent 5abbc9f696
commit c052835281
10 changed files with 207 additions and 32 deletions

View file

@ -3,12 +3,14 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::bindings::codegen::Bindings::CSSMediaRuleBinding;
use dom::bindings::js::Root;
use dom::bindings::reflector::reflect_dom_object;
use dom::bindings::codegen::Bindings::CSSMediaRuleBinding::CSSMediaRuleMethods;
use dom::bindings::js::{JS, MutNullableHeap, Root};
use dom::bindings::reflector::{Reflectable, reflect_dom_object};
use dom::bindings::str::DOMString;
use dom::cssgroupingrule::CSSGroupingRule;
use dom::cssrule::SpecificCSSRule;
use dom::cssstylesheet::CSSStyleSheet;
use dom::medialist::MediaList;
use dom::window::Window;
use parking_lot::RwLock;
use std::sync::Arc;
@ -20,6 +22,7 @@ pub struct CSSMediaRule {
cssrule: CSSGroupingRule,
#[ignore_heap_size_of = "Arc"]
mediarule: Arc<RwLock<MediaRule>>,
medialist: MutNullableHeap<JS<MediaList>>,
}
impl CSSMediaRule {
@ -29,6 +32,7 @@ impl CSSMediaRule {
CSSMediaRule {
cssrule: CSSGroupingRule::new_inherited(parent_stylesheet, list),
mediarule: mediarule,
medialist: MutNullableHeap::new(None),
}
}
@ -39,6 +43,11 @@ impl CSSMediaRule {
window,
CSSMediaRuleBinding::Wrap)
}
fn medialist(&self) -> Root<MediaList> {
self.medialist.or_init(|| MediaList::new(self.global().as_window(),
self.mediarule.read().media_queries.clone()))
}
}
impl SpecificCSSRule for CSSMediaRule {
@ -51,3 +60,10 @@ impl SpecificCSSRule for CSSMediaRule {
self.mediarule.read().to_css_string().into()
}
}
impl CSSMediaRuleMethods for CSSMediaRule {
// https://drafts.csswg.org/cssom/#dom-cssgroupingrule-media
fn Media(&self) -> Root<MediaList> {
self.medialist()
}
}

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@ -0,0 +1,122 @@
/* 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 core::default::Default;
use cssparser::Parser;
use dom::bindings::codegen::Bindings::MediaListBinding;
use dom::bindings::codegen::Bindings::MediaListBinding::MediaListMethods;
use dom::bindings::js::Root;
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::bindings::str::DOMString;
use dom::window::Window;
use parking_lot::RwLock;
use std::sync::Arc;
use style::media_queries::{MediaQuery, parse_media_query_list};
use style::media_queries::MediaList as StyleMediaList;
use style_traits::ToCss;
#[dom_struct]
pub struct MediaList {
reflector_: Reflector,
#[ignore_heap_size_of = "Arc"]
media_queries: Arc<RwLock<StyleMediaList>>,
}
impl MediaList {
#[allow(unrooted_must_root)]
pub fn new_inherited(media_queries: Arc<RwLock<StyleMediaList>>) -> MediaList {
MediaList {
reflector_: Reflector::new(),
media_queries: media_queries,
}
}
#[allow(unrooted_must_root)]
pub fn new(window: &Window, media_queries: Arc<RwLock<StyleMediaList>>)
-> Root<MediaList> {
reflect_dom_object(box MediaList::new_inherited(media_queries),
window,
MediaListBinding::Wrap)
}
}
impl MediaListMethods for MediaList {
// https://drafts.csswg.org/cssom/#dom-medialist-mediatext
fn MediaText(&self) -> DOMString {
DOMString::from(self.media_queries.read().to_css_string())
}
// https://drafts.csswg.org/cssom/#dom-medialist-mediatext
fn SetMediaText(&self, value: DOMString) {
let mut media_queries = self.media_queries.write();
// Step 2
if value.is_empty() {
// Step 1
*media_queries = StyleMediaList::default();
return;
}
// Step 3
let mut parser = Parser::new(&value);
*media_queries = parse_media_query_list(&mut parser);
}
// https://drafts.csswg.org/cssom/#dom-medialist-length
fn Length(&self) -> u32 {
self.media_queries.read().media_queries.len() as u32
}
// https://drafts.csswg.org/cssom/#dom-medialist-item
fn Item(&self, index: u32) -> Option<DOMString> {
self.media_queries.read().media_queries.get(index as usize)
.and_then(|query| {
let mut s = String::new();
query.to_css(&mut s).unwrap();
Some(DOMString::from_string(s))
})
}
// https://drafts.csswg.org/cssom/#dom-medialist-item
fn IndexedGetter(&self, index: u32) -> Option<DOMString> {
self.Item(index)
}
// https://drafts.csswg.org/cssom/#dom-medialist-appendmedium
fn AppendMedium(&self, medium: DOMString) {
// Step 1
let mut parser = Parser::new(&medium);
let m = MediaQuery::parse(&mut parser);
// Step 2
if let Err(_) = m {
return;
}
// Step 3
let m_serialized = m.clone().unwrap().to_css_string();
let any = self.media_queries.read().media_queries.iter()
.any(|q| m_serialized == q.to_css_string());
if any {
return;
}
// Step 4
self.media_queries.write().media_queries.push(m.unwrap());
}
// https://drafts.csswg.org/cssom/#dom-medialist-deletemedium
fn DeleteMedium(&self, medium: DOMString) {
// Step 1
let mut parser = Parser::new(&medium);
let m = MediaQuery::parse(&mut parser);
// Step 2
if let Err(_) = m {
return;
}
// Step 3
let m_serialized = m.unwrap().to_css_string();
let mut media_list = self.media_queries.write();
let new_vec = media_list.media_queries.drain(..)
.filter(|q| m_serialized != q.to_css_string())
.collect();
media_list.media_queries = new_vec;
}
}

View file

@ -368,6 +368,7 @@ pub mod imagedata;
pub mod keyboardevent;
pub mod location;
pub mod mediaerror;
pub mod medialist;
pub mod mediaquerylist;
pub mod messageevent;
pub mod mimetype;

View file

@ -5,5 +5,5 @@
// https://drafts.csswg.org/cssom/#the-cssmediarule-interface
[Exposed=Window]
interface CSSMediaRule : CSSGroupingRule {
// [SameObject, PutForwards=mediaText] readonly attribute MediaList media;
[SameObject, PutForwards=mediaText] readonly attribute MediaList media;
};

View file

@ -0,0 +1,13 @@
/* 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/. */
// https://drafts.csswg.org/cssom/#the-medialist-interface
// [LegacyArrayClass]
interface MediaList {
[TreatNullAs=EmptyString] /* stringifier */ attribute DOMString mediaText;
readonly attribute unsigned long length;
getter DOMString? item(unsigned long index);
void appendMedium(DOMString medium);
void deleteMedium(DOMString medium);
};