Rename Project.list -> Project.getFilePaths, and change its behavior.

getFilePaths only resolves to the project-relative paths of all files in the project, excluding directories.

src/atom/project.coffee

@@ -5,6 +5,8 @@ module.exports =
 class Project
   constructor: (@url) ->
 
-  list: ->
-    fs.async.list(@url, true)
+  getFilePaths: ->
+    projectUrl = @url
+    fs.async.list(@url, true).pipe (urls) ->
+      url.replace(projectUrl, "") for url in urls when fs.isFile(url)
 

src/atom/root-view.coffee

@@ -30,16 +30,13 @@ class RootView extends Template
       @main.after(pane)
 
     toggleFileFinder: ->
-      return unless @editor.buffer.url
+      return unless @project
 
       if @fileFinder
         @fileFinder.remove()
         @fileFinder = null
       else
-        directory = fs.directory @editor.buffer.url
-        return fs.async.list(directory, true).done (urls) =>
-          urls = (url for url in urls when fs.isFile url)
-          urls = (url.replace(directory, "") for url in urls)
+        @project.getFilePaths().done (urls) =>
           @fileFinder = FileFinder.build({urls})
           @addPane(@fileFinder)
           @fileFinder.input.focus()