GH-405 Store prefs directly after changing

VimR/Context.swift

@@ -22,6 +22,7 @@ class Context {
     let openQuicklyReducer = OpenQuicklyReducer()
     let previewReducer = PreviewReducer(baseServerUrl: baseServerUrl)
 
+    let prefService = PrefService()
     let previewService = PreviewService()
 
     // For clean quit
@@ -45,7 +46,7 @@ class Context {
           .reduce(by: UiRootReducer())
           .reduce(by: openQuicklyReducer.forMainWindow)
           .filter { $0.modified }
-          .apply(to: PrefService())
+          .apply(to: prefService.forMainWindow)
           .map { $0.state },
         actionSource
           .mapOmittingNil { $0 as? FileMonitor.Action }
@@ -130,6 +131,7 @@ class Context {
           .map { $0.state }
       )
       .merge()
+      .apply(to: prefService.forPrefPanes)
       .subscribe(onNext: self.emitAppState)
       .addDisposableTo(self.disposeBag)
 
@@ -213,4 +215,8 @@ extension Observable {
   fileprivate func apply<S:Service>(to service: S) -> Observable<Element> where S.Pair == Element {
     return self.do(onNext: service.apply)
   }
+
+  fileprivate func apply<S:StateService>(to service: S) -> Observable<Element> where S.StateType == Element {
+    return self.do(onNext: service.apply)
+  }
 }

VimR/PrefService.swift

@@ -9,19 +9,38 @@ import RxSwift
 
 fileprivate let defaults = UserDefaults.standard
 
-class PrefService: Service {
-
-  typealias Pair = StateActionPair<AppState, UuidAction<MainWindow.Action>>
+class PrefService {
 
   static let compatibleVersion = "168"
   static let lastCompatibleVersion = "128"
 
-  func apply(_ pair: Pair) {
-    guard case .close = pair.action.payload else {
-      return
-    }
-
-    NSLog("Saving pref!")
-    defaults.setValue(pair.state.dict(), forKey: PrefService.compatibleVersion)
-  }
+  let forMainWindow = PrefMainWindowService()
+  let forPrefPanes = PrefPaneService()
 }
+
+extension PrefService {
+
+  class PrefMainWindowService: Service {
+
+    typealias Pair = StateActionPair<AppState, UuidAction<MainWindow.Action>>
+
+    func apply(_ pair: Pair) {
+      guard case .close = pair.action.payload else {
+        return
+      }
+
+      NSLog("Saving pref!")
+      defaults.setValue(pair.state.dict(), forKey: PrefService.compatibleVersion)
+    }
+  }
+
+  class PrefPaneService: StateService {
+
+    typealias StateType = AppState
+
+    func apply(_ state: StateType) {
+      NSLog("Saving pref!")
+      defaults.setValue(state.dict(), forKey: PrefService.compatibleVersion)
+    }
+  }
+}

VimR/Types.swift

@@ -108,6 +108,13 @@ protocol Service {
   func apply(_: Pair)
 }
 
+protocol StateService {
+
+  associatedtype StateType
+
+  func apply(_: StateType)
+}
+
 protocol UiComponent {
 
   associatedtype StateType