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localStorage shim, fixes #5195

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This commit is contained in:
Zack Slayton 2015-03-14 12:33:48 -04:00
parent 1a9679857a
commit 323baf92db
27 changed files with 112 additions and 172 deletions
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98
components/net/storage_task.rs
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@ -11,26 +11,32 @@ use url::Url;
use util::str::DOMString;
use util::task::spawn_named;
#[derive(Copy)]
pub enum StorageType {
Session,
Local
}
/// Request operations on the storage data associated with a particular url
pub enum StorageTaskMsg {
/// gets the number of key/value pairs present in the associated storage data
Length(Sender<u32>, Url),
Length(Sender<u32>, Url, StorageType),
/// gets the name of the key at the specified index in the associated storage data
Key(Sender<Option<DOMString>>, Url, u32),
Key(Sender<Option<DOMString>>, Url, StorageType, u32),
/// gets the value associated with the given key in the associated storage data
GetItem(Sender<Option<DOMString>>, Url, DOMString),
GetItem(Sender<Option<DOMString>>, Url, StorageType, DOMString),
/// sets the value of the given key in the associated storage data
/// TODO throw QuotaExceededError in case of error
SetItem(Sender<bool>, Url, DOMString, DOMString),
SetItem(Sender<bool>, Url, StorageType, DOMString, DOMString),
/// removes the key/value pair for the given key in the associated storage data
RemoveItem(Sender<bool>, Url, DOMString),
RemoveItem(Sender<bool>, Url, StorageType, DOMString),
/// clears the associated storage data by removing all the key/value pairs
Clear(Sender<bool>, Url),
Clear(Sender<bool>, Url, StorageType),
/// shut down this task
Exit
@ -56,14 +62,16 @@ impl StorageTaskFactory for StorageTask {
struct StorageManager {
port: Receiver<StorageTaskMsg>,
data: HashMap<String, BTreeMap<DOMString, DOMString>>,
session_data: HashMap<String, BTreeMap<DOMString, DOMString>>,
local_data: HashMap<String, BTreeMap<DOMString, DOMString>>,
}
impl StorageManager {
fn new(port: Receiver<StorageTaskMsg>) -> StorageManager {
StorageManager {
port: port,
data: HashMap::new(),
session_data: HashMap::new(),
local_data: HashMap::new(),
}
}
}
@ -72,23 +80,23 @@ impl StorageManager {
fn start(&mut self) {
loop {
match self.port.recv().unwrap() {
StorageTaskMsg::Length(sender, url) => {
self.length(sender, url)
StorageTaskMsg::Length(sender, url, storage_type) => {
self.length(sender, url, storage_type)
}
StorageTaskMsg::Key(sender, url, index) => {
self.key(sender, url, index)
StorageTaskMsg::Key(sender, url, storage_type, index) => {
self.key(sender, url, storage_type, index)
}
StorageTaskMsg::SetItem(sender, url, name, value) => {
self.set_item(sender, url, name, value)
StorageTaskMsg::SetItem(sender, url, storage_type, name, value) => {
self.set_item(sender, url, storage_type, name, value)
}
StorageTaskMsg::GetItem(sender, url, name) => {
self.get_item(sender, url, name)
StorageTaskMsg::GetItem(sender, url, storage_type, name) => {
self.get_item(sender, url, storage_type, name)
}
StorageTaskMsg::RemoveItem(sender, url, name) => {
self.remove_item(sender, url, name)
StorageTaskMsg::RemoveItem(sender, url, storage_type, name) => {
self.remove_item(sender, url, storage_type, name)
}
StorageTaskMsg::Clear(sender, url) => {
self.clear(sender, url)
StorageTaskMsg::Clear(sender, url, storage_type) => {
self.clear(sender, url, storage_type)
}
StorageTaskMsg::Exit => {
break
@ -97,25 +105,42 @@ impl StorageManager {
}
}
fn length(&self, sender: Sender<u32>, url: Url) {
let origin = self.get_origin_as_string(url);
sender.send(self.data.get(&origin).map_or(0u, |entry| entry.len()) as u32).unwrap();
fn select_data(& self, storage_type: StorageType) -> &HashMap<String, BTreeMap<DOMString, DOMString>> {
match storage_type {
StorageType::Session => &self.session_data,
StorageType::Local => &self.local_data
}
}
fn key(&self, sender: Sender<Option<DOMString>>, url: Url, index: u32) {
fn select_data_mut(&mut self, storage_type: StorageType) -> &mut HashMap<String, BTreeMap<DOMString, DOMString>> {
match storage_type {
StorageType::Session => &mut self.session_data,
StorageType::Local => &mut self.local_data
}
}
fn length(&self, sender: Sender<u32>, url: Url, storage_type: StorageType) {
let origin = self.get_origin_as_string(url);
sender.send(self.data.get(&origin)
let data = self.select_data(storage_type);
sender.send(data.get(&origin).map_or(0u, |entry| entry.len()) as u32).unwrap();
}
fn key(&self, sender: Sender<Option<DOMString>>, url: Url, storage_type: StorageType, index: u32) {
let origin = self.get_origin_as_string(url);
let data = self.select_data(storage_type);
sender.send(data.get(&origin)
.and_then(|entry| entry.keys().nth(index as uint))
.map(|key| key.clone())).unwrap();
}
fn set_item(&mut self, sender: Sender<bool>, url: Url, name: DOMString, value: DOMString) {
fn set_item(&mut self, sender: Sender<bool>, url: Url, storage_type: StorageType, name: DOMString, value: DOMString) {
let origin = self.get_origin_as_string(url);
if !self.data.contains_key(&origin) {
self.data.insert(origin.clone(), BTreeMap::new());
let data = self.select_data_mut(storage_type);
if !data.contains_key(&origin) {
data.insert(origin.clone(), BTreeMap::new());
}
let updated = self.data.get_mut(&origin).map(|entry| {
let updated = data.get_mut(&origin).map(|entry| {
if entry.get(&origin).map_or(true, |item| item.as_slice() != value.as_slice()) {
entry.insert(name.clone(), value.clone());
true
@ -127,22 +152,25 @@ impl StorageManager {
sender.send(updated).unwrap();
}
fn get_item(&self, sender: Sender<Option<DOMString>>, url: Url, name: DOMString) {
fn get_item(&self, sender: Sender<Option<DOMString>>, url: Url, storage_type: StorageType, name: DOMString) {
let origin = self.get_origin_as_string(url);
sender.send(self.data.get(&origin)
let data = self.select_data(storage_type);
sender.send(data.get(&origin)
.and_then(|entry| entry.get(&name))
.map(|value| value.to_string())).unwrap();
}
fn remove_item(&mut self, sender: Sender<bool>, url: Url, name: DOMString) {
fn remove_item(&mut self, sender: Sender<bool>, url: Url, storage_type: StorageType, name: DOMString) {
let origin = self.get_origin_as_string(url);
sender.send(self.data.get_mut(&origin)
let data = self.select_data_mut(storage_type);
sender.send(data.get_mut(&origin)
.map_or(false, |entry| entry.remove(&name).is_some())).unwrap();
}
fn clear(&mut self, sender: Sender<bool>, url: Url) {
fn clear(&mut self, sender: Sender<bool>, url: Url, storage_type: StorageType) {
let origin = self.get_origin_as_string(url);
sender.send(self.data.get_mut(&origin)
let data = self.select_data_mut(storage_type);
sender.send(data.get_mut(&origin)
.map_or(false, |entry| {
if !entry.is_empty() {
entry.clear();