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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::SourceLocation;
use servo_arc::Arc;
use style::gecko::data::GeckoStyleSheet;
use style::gecko_bindings::bindings::Gecko_LoadStyleSheet;
use style::gecko_bindings::structs::{Loader, ServoStyleSheet, LoaderReusableStyleSheets};
use style::gecko_bindings::sugar::ownership::FFIArcHelpers;
use style::media_queries::MediaList;
use style::parser::ParserContext;
use style::shared_lock::{Locked, SharedRwLock};
use style::stylesheets::{ImportRule, StylesheetLoader as StyleStylesheetLoader};
use style::stylesheets::import_rule::ImportSheet;
use style::values::specified::url::SpecifiedUrl;
pub struct StylesheetLoader(*mut Loader, *mut ServoStyleSheet, *mut LoaderReusableStyleSheets);
impl StylesheetLoader {
pub fn new(loader: *mut Loader,
parent: *mut ServoStyleSheet,
reusable_sheets: *mut LoaderReusableStyleSheets) -> Self {
StylesheetLoader(loader, parent, reusable_sheets)
}
}
impl StyleStylesheetLoader for StylesheetLoader {
fn request_stylesheet(
&self,
url: SpecifiedUrl,
source_location: SourceLocation,
_context: &ParserContext,
lock: &SharedRwLock,
media: Arc<Locked<MediaList>>,
) -> Arc<Locked<ImportRule>> {
// After we get this raw pointer ImportRule will be moved into a lock and Arc
// and so the Arc<Url> pointer inside will also move,
// but the Url it points to or the allocating backing the String inside that Url won’t,
// so this raw pointer will still be valid.
let child_sheet = unsafe {
let (spec_bytes, spec_len) = url.as_slice_components();
let base_url_data = url.extra_data.get();
Gecko_LoadStyleSheet(self.0,
self.1,
self.2,
base_url_data,
spec_bytes,
spec_len as u32,
media.into_strong())
};
debug_assert!(!child_sheet.is_null(),
"Import rules should always have a strong sheet");
let stylesheet = unsafe {
ImportSheet(GeckoStyleSheet::from_addrefed(child_sheet))
};
Arc::new(lock.wrap(ImportRule { url, source_location, stylesheet }))
}
}
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