servo-script 0.1.0

A component of the servo web-engine.
Documentation 
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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 https://mozilla.org/MPL/2.0/. */

use dom_struct::dom_struct;
use itertools::Itertools;

use crate::dom::bindings::codegen::Bindings::DOMStringListBinding::DOMStringListMethods;
use crate::dom::bindings::reflector::{Reflector, reflect_dom_object};
use crate::dom::bindings::root::DomRoot;
use crate::dom::bindings::str::DOMString;
use crate::dom::globalscope::GlobalScope;
use crate::script_runtime::CanGc;

#[dom_struct]
pub(crate) struct DOMStringList {
    reflector_: Reflector,
    strings: Vec<DOMString>,
}

impl DOMStringList {
    pub(crate) fn new_inherited(strings: Vec<DOMString>) -> DOMStringList {
        DOMStringList {
            reflector_: Reflector::new(),
            strings,
        }
    }

    pub(crate) fn new(
        global: &GlobalScope,
        strings: Vec<DOMString>,
        can_gc: CanGc,
    ) -> DomRoot<DOMStringList> {
        reflect_dom_object(
            Box::new(DOMStringList::new_inherited(strings)),
            global,
            can_gc,
        )
    }

    /// <https://www.w3.org/TR/IndexedDB-3/#sorted-name-list>
    pub(crate) fn new_sorted<'a>(
        global: &GlobalScope,
        strings: impl IntoIterator<Item = &'a DOMString>,
        can_gc: CanGc,
    ) -> DomRoot<DOMStringList> {
        let sorted = strings
            .into_iter()
            .map(|dom_string| dom_string.str().encode_utf16().collect::<Vec<u16>>())
            .sorted_unstable()
            .map(|utf16_str| {
                String::from_utf16(utf16_str.as_slice())
                    .expect("can't convert object store name from utf16 back to utf8")
                    .into()
            })
            .collect();
        Self::new(global, sorted, can_gc)
    }
}

// https://html.spec.whatwg.org/multipage/#domstringlist
impl DOMStringListMethods<crate::DomTypeHolder> for DOMStringList {
    /// <https://html.spec.whatwg.org/multipage/#dom-domstringlist-length>
    fn Length(&self) -> u32 {
        self.strings.len() as u32
    }

    /// <https://html.spec.whatwg.org/multipage/#dom-domstringlist-item>
    fn Item(&self, index: u32) -> Option<DOMString> {
        self.strings.get(index as usize).cloned()
    }

    /// <https://html.spec.whatwg.org/multipage/#dom-domstringlist-contains>
    fn Contains(&self, string: DOMString) -> bool {
        self.strings.contains(&string)
    }

    // check-tidy: no specs after this line
    fn IndexedGetter(&self, index: u32) -> Option<DOMString> {
        self.Item(index)
    }
}