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92 lines
3.3 KiB
Rust
92 lines
3.3 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::StylePropertyMapReadOnlyBinding::StylePropertyMapReadOnlyMethods;
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use dom::bindings::codegen::Bindings::StylePropertyMapReadOnlyBinding::Wrap;
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use dom::bindings::js::JS;
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use dom::bindings::js::Root;
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use dom::bindings::reflector::Reflector;
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use dom::bindings::reflector::reflect_dom_object;
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use dom::bindings::str::DOMString;
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use dom::cssstylevalue::CSSStyleValue;
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use dom::globalscope::GlobalScope;
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use dom_struct::dom_struct;
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use servo_atoms::Atom;
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use std::cmp::Ordering;
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use std::collections::HashMap;
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use std::iter::Iterator;
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#[dom_struct]
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pub struct StylePropertyMapReadOnly {
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reflector: Reflector,
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entries: HashMap<Atom, JS<CSSStyleValue>>,
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}
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impl StylePropertyMapReadOnly {
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fn new_inherited<Entries>(entries: Entries) -> StylePropertyMapReadOnly where
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Entries: IntoIterator<Item=(Atom, JS<CSSStyleValue>)>
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{
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StylePropertyMapReadOnly {
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reflector: Reflector::new(),
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entries: entries.into_iter().collect(),
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}
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}
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pub fn from_iter<Entries>(global: &GlobalScope, entries: Entries) -> Root<StylePropertyMapReadOnly> where
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Entries: IntoIterator<Item=(Atom, String)>,
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{
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let mut keys = Vec::new();
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rooted_vec!(let mut values);
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let iter = entries.into_iter();
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let (lo, _) = iter.size_hint();
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keys.reserve(lo);
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values.reserve(lo);
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for (key, value) in iter {
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let value = CSSStyleValue::new(global, value);
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keys.push(key);
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values.push(JS::from_ref(&*value));
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}
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let iter = keys.drain(..).zip(values.iter().cloned());
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reflect_dom_object(box StylePropertyMapReadOnly::new_inherited(iter), global, Wrap)
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}
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}
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impl StylePropertyMapReadOnlyMethods for StylePropertyMapReadOnly {
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/// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-get
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fn Get(&self, property: DOMString) -> Option<Root<CSSStyleValue>> {
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// TODO: avoid constructing an Atom
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self.entries.get(&Atom::from(property)).map(|value| Root::from_ref(&**value))
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}
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/// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-has
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fn Has(&self, property: DOMString) -> bool {
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// TODO: avoid constructing an Atom
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self.entries.contains_key(&Atom::from(property))
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}
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/// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-getproperties
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fn GetProperties(&self) -> Vec<DOMString> {
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let mut result: Vec<DOMString> = self.entries.keys()
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.map(|key| DOMString::from(&**key))
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.collect();
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// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymap-getproperties
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// requires this sort order
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result.sort_by(|key1, key2| {
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if key1.starts_with("-") {
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if key2.starts_with("-") {
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key1.cmp(key2)
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} else {
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Ordering::Greater
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}
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} else {
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if key2.starts_with("-") {
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Ordering::Less
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} else {
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key1.cmp(key2)
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}
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}
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});
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result
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}
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}
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