Previously focused editor is re-focused on refresh

The isFocused property has now been added to editor state. When an editor is attached to the dom, it focuses itself automatically if and only if the @isFocused property is true. The @isFocused property gets assigned when the editor is constructed by the root view with its previous state.

src/app/editor.coffee

@@ -168,7 +168,7 @@ class Editor extends View
       @calculateDimensions()
       @hiddenInput.width(@charWidth)
       @setMaxLineLength() if @softWrap
-      @focus()
+      @focus() if @isFocused
 
   rootView: ->
     @parents('#root-view').view()
@@ -227,12 +227,14 @@ class Editor extends View
     buffer = editorState.buffer ? new Buffer
     @editorStatesByBufferId[buffer.id] = editorState
     @setBuffer(buffer)
+    @isFocused = editorState.isFocused
 
   getEditorState: ->
     buffer: @buffer
     cursorScreenPosition: @getCursorScreenPosition().copy()
     scrollTop: @scroller.scrollTop()
     scrollLeft: @scroller.scrollLeft()
+    isFocused: @isFocused
 
   saveEditorStateForCurrentBuffer: ->
     @editorStatesByBufferId[@buffer.id] = @getEditorState()

src/app/file-finder.coffee

@@ -16,7 +16,6 @@ class FileFinder extends View
   initialize: ({@paths, @selected}) ->
     requireStylesheet 'file-finder.css'
     @maxResults = 10
-    @previousFocusedElement = $(document.activeElement)
 
     @populatePathList()
 
@@ -44,10 +43,6 @@ class FileFinder extends View
     @selected(filePath) if filePath and @selected
     @remove()
 
-  remove: ->
-    super()
-    @previousFocusedElement.focus()
-
   moveUp: ->
     @findSelectedLi()
       .filter(':not(:first-child)')

src/app/root-view.coffee

@@ -192,3 +192,4 @@ class RootView extends View
           paths: relativePaths
           selected: (relativePath) => @open(relativePath)
         @append @fileFinder
+        @fileFinder.editor.focus()