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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 dom::bindings::codegen::Bindings::StorageBinding;
use dom::bindings::codegen::Bindings::StorageBinding::StorageMethods;
use dom::bindings::error::{Error, ErrorResult};
use dom::bindings::inheritance::Castable;
use dom::bindings::refcounted::Trusted;
use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
use dom::bindings::root::DomRoot;
use dom::bindings::str::DOMString;
use dom::event::{Event, EventBubbles, EventCancelable};
use dom::storageevent::StorageEvent;
use dom::window::Window;
use dom_struct::dom_struct;
use ipc_channel::ipc::{self, IpcSender};
use net_traits::IpcSend;
use net_traits::storage_thread::{StorageThreadMsg, StorageType};
use script_traits::ScriptMsg;
use servo_url::ServoUrl;
use task_source::TaskSource;
#[dom_struct]
pub struct Storage {
reflector_: Reflector,
storage_type: StorageType
}
impl Storage {
fn new_inherited(storage_type: StorageType) -> Storage {
Storage {
reflector_: Reflector::new(),
storage_type: storage_type
}
}
pub fn new(global: &Window, storage_type: StorageType) -> DomRoot<Storage> {
reflect_dom_object(Box::new(Storage::new_inherited(storage_type)), global, StorageBinding::Wrap)
}
fn get_url(&self) -> ServoUrl {
self.global().get_url()
}
fn get_storage_thread(&self) -> IpcSender<StorageThreadMsg> {
self.global().resource_threads().sender()
}
}
impl StorageMethods for Storage {
// https://html.spec.whatwg.org/multipage/#dom-storage-length
fn Length(&self) -> u32 {
let (sender, receiver) = ipc::channel().unwrap();
self.get_storage_thread().send(StorageThreadMsg::Length(sender, self.get_url(), self.storage_type)).unwrap();
receiver.recv().unwrap() as u32
}
// https://html.spec.whatwg.org/multipage/#dom-storage-key
fn Key(&self, index: u32) -> Option<DOMString> {
let (sender, receiver) = ipc::channel().unwrap();
self.get_storage_thread()
.send(StorageThreadMsg::Key(sender, self.get_url(), self.storage_type, index))
.unwrap();
receiver.recv().unwrap().map(DOMString::from)
}
// https://html.spec.whatwg.org/multipage/#dom-storage-getitem
fn GetItem(&self, name: DOMString) -> Option<DOMString> {
let (sender, receiver) = ipc::channel().unwrap();
let name = String::from(name);
let msg = StorageThreadMsg::GetItem(sender, self.get_url(), self.storage_type, name);
self.get_storage_thread().send(msg).unwrap();
receiver.recv().unwrap().map(DOMString::from)
}
// https://html.spec.whatwg.org/multipage/#dom-storage-setitem
fn SetItem(&self, name: DOMString, value: DOMString) -> ErrorResult {
let (sender, receiver) = ipc::channel().unwrap();
let name = String::from(name);
let value = String::from(value);
let msg = StorageThreadMsg::SetItem(sender, self.get_url(), self.storage_type, name.clone(), value.clone());
self.get_storage_thread().send(msg).unwrap();
match receiver.recv().unwrap() {
Err(_) => Err(Error::QuotaExceeded),
Ok((changed, old_value)) => {
if changed {
self.broadcast_change_notification(Some(name), old_value, Some(value));
}
Ok(())
}
}
}
// https://html.spec.whatwg.org/multipage/#dom-storage-removeitem
fn RemoveItem(&self, name: DOMString) {
let (sender, receiver) = ipc::channel().unwrap();
let name = String::from(name);
let msg = StorageThreadMsg::RemoveItem(sender, self.get_url(), self.storage_type, name.clone());
self.get_storage_thread().send(msg).unwrap();
if let Some(old_value) = receiver.recv().unwrap() {
self.broadcast_change_notification(Some(name), Some(old_value), None);
}
}
// https://html.spec.whatwg.org/multipage/#dom-storage-clear
fn Clear(&self) {
let (sender, receiver) = ipc::channel().unwrap();
self.get_storage_thread().send(StorageThreadMsg::Clear(sender, self.get_url(), self.storage_type)).unwrap();
if receiver.recv().unwrap() {
self.broadcast_change_notification(None, None, None);
}
}
// https://html.spec.whatwg.org/multipage/#the-storage-interface:supported-property-names
fn SupportedPropertyNames(&self) -> Vec<DOMString> {
let (sender, receiver) = ipc::channel().unwrap();
self.get_storage_thread().send(StorageThreadMsg::Keys(sender, self.get_url(), self.storage_type)).unwrap();
receiver.recv()
.unwrap()
.into_iter()
.map(DOMString::from)
.collect()
}
// check-tidy: no specs after this line
fn NamedGetter(&self, name: DOMString) -> Option<DOMString> {
self.GetItem(name)
}
fn NamedSetter(&self, name: DOMString, value: DOMString) -> ErrorResult {
self.SetItem(name, value)
}
fn NamedDeleter(&self, name: DOMString) {
self.RemoveItem(name);
}
}
impl Storage {
/// <https://html.spec.whatwg.org/multipage/#send-a-storage-notification>
fn broadcast_change_notification(&self, key: Option<String>, old_value: Option<String>,
new_value: Option<String>) {
let storage = self.storage_type;
let url = self.get_url();
let msg = ScriptMsg::BroadcastStorageEvent(storage, url, key, old_value, new_value);
self.global().script_to_constellation_chan().send(msg).unwrap();
}
/// <https://html.spec.whatwg.org/multipage/#send-a-storage-notification>
pub fn queue_storage_event(
&self,
url: ServoUrl,
key: Option<String>,
old_value: Option<String>,
new_value: Option<String>,
) {
let global = self.global();
let this = Trusted::new(self);
global.as_window().dom_manipulation_task_source().queue(
task!(send_storage_notification: move || {
let this = this.root();
let global = this.global();
let event = StorageEvent::new(
global.as_window(),
atom!("storage"),
EventBubbles::DoesNotBubble,
EventCancelable::NotCancelable,
key.map(DOMString::from),
old_value.map(DOMString::from),
new_value.map(DOMString::from),
DOMString::from(url.into_string()),
Some(&this),
);
event.upcast::<Event>().fire(global.upcast());
}),
global.upcast(),
).unwrap();
}
}
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