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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 cstr::cstr;
use nsstring::{nsACString, nsCString};
use std::marker::PhantomData;
use thin_vec::ThinVec;
use xpcom::{
get_service, getter_addrefs,
interfaces::{
mozILocaleService, nsICategoryEntry, nsICategoryManager, nsISimpleEnumerator, nsIXULRuntime,
},
RefPtr, XpCom,
};
pub struct IterSimpleEnumerator<T> {
enumerator: RefPtr<nsISimpleEnumerator>,
phantom: PhantomData<T>,
}
impl<T: XpCom> IterSimpleEnumerator<T> {
/// Convert a `nsISimpleEnumerator` into a rust `Iterator` type.
pub fn new(enumerator: RefPtr<nsISimpleEnumerator>) -> Self {
IterSimpleEnumerator {
enumerator,
phantom: PhantomData,
}
}
}
impl<T: XpCom + 'static> Iterator for IterSimpleEnumerator<T> {
type Item = RefPtr<T>;
fn next(&mut self) -> Option<Self::Item> {
let mut more = false;
unsafe {
self.enumerator
.HasMoreElements(&mut more)
.to_result()
.ok()?
}
if !more {
return None;
}
let element = getter_addrefs(|p| unsafe { self.enumerator.GetNext(p) }).ok()?;
element.query_interface::<T>()
}
}
fn process_type() -> u32 {
if let Ok(appinfo) = xpcom::components::XULRuntime::service::<nsIXULRuntime>() {
let mut process_type = nsIXULRuntime::PROCESS_TYPE_DEFAULT;
if unsafe { appinfo.GetProcessType(&mut process_type).succeeded() } {
return process_type;
}
}
nsIXULRuntime::PROCESS_TYPE_DEFAULT
}
pub fn is_parent_process() -> bool {
process_type() == nsIXULRuntime::PROCESS_TYPE_DEFAULT
}
pub fn get_packaged_locales() -> Option<ThinVec<nsCString>> {
let locale_service =
get_service::<mozILocaleService>(cstr!("@mozilla.org/intl/localeservice;1"))?;
let mut locales = ThinVec::new();
unsafe {
locale_service
.GetPackagedLocales(&mut locales)
.to_result()
.ok()?;
}
Some(locales)
}
pub fn get_app_locales() -> Option<ThinVec<nsCString>> {
let locale_service =
get_service::<mozILocaleService>(cstr!("@mozilla.org/intl/localeservice;1"))?;
let mut locales = ThinVec::new();
unsafe {
locale_service
.GetAppLocalesAsBCP47(&mut locales)
.to_result()
.ok()?;
}
Some(locales)
}
pub fn set_available_locales(locales: &ThinVec<nsCString>) {
let locale_service =
get_service::<mozILocaleService>(cstr!("@mozilla.org/intl/localeservice;1"))
.expect("Failed to get a service.");
unsafe {
locale_service
.SetAvailableLocales(locales)
.to_result()
.expect("Failed to set locales.");
}
}
pub struct CategoryEntry {
pub entry: nsCString,
pub value: nsCString,
}
pub fn get_category_entries(category: &nsACString) -> Option<Vec<CategoryEntry>> {
let category_manager =
get_service::<nsICategoryManager>(cstr!("@mozilla.org/categorymanager;1"))?;
let enumerator =
getter_addrefs(|p| unsafe { category_manager.EnumerateCategory(category, p) }).ok()?;
Some(
IterSimpleEnumerator::<nsICategoryEntry>::new(enumerator)
.map(|ientry| {
let mut entry = nsCString::new();
let mut value = nsCString::new();
unsafe {
let _ = ientry.GetEntry(&mut *entry);
let _ = ientry.GetValue(&mut *value);
}
CategoryEntry { entry, value }
})
.collect(),
)
}
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