persistence, but it's too magic

src/pane.coffee

@@ -10,7 +10,14 @@ class Pane
 
   keymap: {}
 
+  persistantProperties: {}
+
+  editableProperties: {}
+
   constructor: (options={}) ->
+    @createPersistentProperty(k, v) for k, v of @persistantProperties
+    @createPersistentProperty(k, v) for k, v of @editableProperties
+
     for option, value of options
       @[option] = value
 
@@ -24,10 +31,38 @@ class Pane
             @[method]()
           else
             console.error "keymap: no '#{method}' method found"
+
     @initialize options
 
-  # Override in your subclass
-  initialize: ->
+  createPersistentProperty: (property, defaultValue) ->
+    storedPropertyName = "__" + property + "__"
+    Object.defineProperty @, property,
+      get: ->
+        key = @persistentanceNamespace() + property
+
+        if @[storedPropertyName]
+          # Cool, just chill for awhile
+        else if localStorage[key]
+          try
+            @[storedPropertyName] = JSON.parse(localStorage[key] ? "null")
+          catch error
+            @[storedPropertyName] = defaultValue
+            error.message += "\n#{key}: #{JSON.stringify localStorage[key]}"
+            console.log(error)
+        else
+          @[storedPropertyName] = defaultValue
+
+        return @[storedPropertyName]
+
+      set: (value) ->
+        key = @persistentanceNamespace() + property
+
+        try
+          @[storedPropertyName] = value
+          localStorage[key] = JSON.stringify value
+        catch error
+          error.message += "\n value = #{JSON.stringify value}"
+          console.log(error)
 
   toggle: ->
     if @showing
@@ -39,3 +74,8 @@ class Pane
       activeWindow.addPane this
 
     @showing = not @showing
+
+  # Override these in your subclass
+  initialize: ->
+
+  persistentanceNamespace: -> @.constructor.name