Change octicon based on creating file or folder

src/packages/tree-view/lib/tree-view.coffee

@@ -253,7 +253,8 @@ class TreeView extends ScrollView
       prompt: "Enter the path for the new file/directory. Directories end with a '/'."
       path: relativeDirectoryPath
       select: false
-      iconClass: 'add'
+      iconClass: 'add-directory'
+
       onConfirm: (relativePath) =>
         endsWithDirectorySeparator = /\/$/.test(relativePath)
         path = project.resolve(relativePath)
@@ -273,6 +274,12 @@ class TreeView extends ScrollView
         catch e
           dialog.showError("Error: #{e.message} Try a different path.")
 
+    dialog.miniEditor.getBuffer().on 'changed', =>
+      if /\/$/.test(dialog.miniEditor.getText())
+        dialog.prompt.removeClass('add-file').addClass('add-directory')
+      else
+        dialog.prompt.removeClass('add-directory').addClass('add-file')
+
     rootView.append(dialog)
 
   selectedEntry: ->

static/tree-view.css

@@ -41,10 +41,14 @@
   -webkit-font-smoothing: antialiased;
 }
 
-.tree-view-dialog .prompt.add:before {
+.tree-view-dialog .prompt.add-file:before {
   content: "\f086";
 }
 
+.tree-view-dialog .prompt.add-directory:before {
+  content: "\f095";
+}
+
 .tree-view-dialog .prompt.move:before {
   content: "\f03e";
 }