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broadcasting storage changes events
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parent
225d7d2ece
commit
1cc5bd4287
13 changed files with 111 additions and 84 deletions
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@ -30,10 +30,10 @@ pub enum StorageTaskMsg {
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/// sets the value of the given key in the associated storage data
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/// TODO throw QuotaExceededError in case of error
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SetItem(Sender<bool>, Url, StorageType, DOMString, DOMString),
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SetItem(Sender<(bool, Option<DOMString>)>, Url, StorageType, DOMString, DOMString),
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/// removes the key/value pair for the given key in the associated storage data
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RemoveItem(Sender<bool>, Url, StorageType, DOMString),
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RemoveItem(Sender<Option<DOMString>>, Url, StorageType, DOMString),
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/// clears the associated storage data by removing all the key/value pairs
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Clear(Sender<bool>, Url, StorageType),
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@ -133,23 +133,25 @@ impl StorageManager {
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.map(|key| key.clone())).unwrap();
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}
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fn set_item(&mut self, sender: Sender<bool>, url: Url, storage_type: StorageType, name: DOMString, value: DOMString) {
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/// Sends Some(old_value) in case there was a previous value with the same key name but with different
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/// value name, otherwise sends None
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fn set_item(&mut self, sender: Sender<(bool, Option<DOMString>)>, url: Url, storage_type: StorageType, name: DOMString, value: DOMString) {
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let origin = self.get_origin_as_string(url);
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let data = self.select_data_mut(storage_type);
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if !data.contains_key(&origin) {
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data.insert(origin.clone(), BTreeMap::new());
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}
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let updated = data.get_mut(&origin).map(|entry| {
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if entry.get(&origin).map_or(true, |item| *item != value) {
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entry.insert(name.clone(), value.clone());
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true
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} else {
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false
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}
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let (changed, old_value) = data.get_mut(&origin).map(|entry| {
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entry.insert(name, value.clone()).map_or(
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(true, None),
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|old| if old == value {
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(false, None)
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} else {
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(true, Some(old))
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})
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}).unwrap();
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sender.send(updated).unwrap();
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sender.send((changed, old_value)).unwrap();
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}
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fn get_item(&self, sender: Sender<Option<DOMString>>, url: Url, storage_type: StorageType, name: DOMString) {
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@ -160,11 +162,14 @@ impl StorageManager {
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.map(|value| value.to_string())).unwrap();
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}
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fn remove_item(&mut self, sender: Sender<bool>, url: Url, storage_type: StorageType, name: DOMString) {
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/// Sends Some(old_value) in case there was a previous value with the key name, otherwise sends None
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fn remove_item(&mut self, sender: Sender<Option<DOMString>>, url: Url, storage_type: StorageType, name: DOMString) {
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let origin = self.get_origin_as_string(url);
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let data = self.select_data_mut(storage_type);
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sender.send(data.get_mut(&origin)
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.map_or(false, |entry| entry.remove(&name).is_some())).unwrap();
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let old_value = data.get_mut(&origin).map(|entry| {
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entry.remove(&name)
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}).unwrap();
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sender.send(old_value).unwrap();
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}
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fn clear(&mut self, sender: Sender<bool>, url: Url, storage_type: StorageType) {
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