1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 # Implements `app::data_store` using `NSUserDefaults`
18 import app
::data_store
19 import cocoa
::foundation
23 redef var data_store
= new UserDefaultView
26 private class UserDefaultView
29 # The `NSUserDefaults` used to implement `DataStore`
30 var user_defaults
= new NSUserDefaults.standard_user_defaults
is lazy
34 var nsstr
= user_defaults
.string_for_key
(key
.to_nsstring
)
36 if nsstr
.address_is_null
then return null
39 var deserializer
= new JsonDeserializer(nsstr
.to_s
)
40 return deserializer
.deserialize
43 redef fun []=(key
, value
)
45 var nsobject
: NSString
48 nsobject
= new NSString.nil
50 var serialized_string
= new StringWriter
51 var serializer
= new JsonSerializer(serialized_string
)
52 serializer
.serialize
(value
)
55 nsobject
= serialized_string
.to_s
.to_nsstring
58 user_defaults
.set_object
(nsobject
, key
.to_nsstring
)