Fixes #327. Only show beautify progress view when actually beautifying

- Beautifiers extends event emitter

src/beautifiers/index.coffee

@@ -4,6 +4,7 @@ Promise = require('bluebird')
 Languages = require('../languages/')
 path = require('path')
 logger = require('../logger')(__filename)
+{EventEmitter} = require 'events'
 
 # Lazy loaded dependencies
 extend = null
@@ -25,7 +26,7 @@ analyticsWriteKey = "u3c26xkae8"
 ###
 Register all supported beautifiers
 ###
-module.exports = class Beautifiers
+module.exports = class Beautifiers extends EventEmitter
     ###
       List of beautifier names
 
@@ -419,9 +420,13 @@ module.exports = class Beautifiers
                         options = transformOptions(beautifier, language.name, options)
 
                         # Beautify text with language options
+                        @emit "beautify::start"
                         beautifier.beautify(text, language.name, options)
                         .then(resolve)
                         .catch(reject)
+                        .finally(=>
+                            @emit "beautify::end"
+                        )
 
                 # Check if Analytics is enabled
                 if atom.config.get("atom-beautify.analytics")

src/beautify.coffee

@@ -19,6 +19,7 @@ yaml = null
 async = null
 dir = null # Node-Dir
 LoadingView = null
+loadingView = null
 $ = null
 
 # function cleanOptions(data, types) {
@@ -44,6 +45,17 @@ setCursors = (editor, posArray) ->
             continue
         editor.addCursorAtBufferPosition bufferPosition
     return
+
+# Show beautification progress/loading view
+beautifier.on('beautify::start', ->
+    LoadingView ?= require "./views/loading-view"
+    loadingView ?= new LoadingView()
+    loadingView.show()
+)
+beautifier.on('beautify::end', ->
+    loadingView?.hide()
+)
+
 beautify = ({onSave}) ->
     # Deprecation warning for beautify on save
     if atom.config.get("atom-beautify.beautifyOnSave") is true
@@ -63,15 +75,11 @@ beautify = ({onSave}) ->
 
     # Continue beautifying
     path ?= require("path")
-    LoadingView ?= require "./views/loading-view"
-    @loadingView ?= new LoadingView()
-    @loadingView.show()
     forceEntireFile = onSave and atom.config.get("atom-beautify.beautifyEntireFileOnSave")
 
 
     # Show error
-    showError = (error)=>
-        @loadingView.hide()
+    showError = (error) =>
         if not atom.config.get("atom-beautify.muteAllErrors")
 
             # console.log(e)
@@ -140,7 +148,6 @@ beautify = ({onSave}) ->
 
         # else
         # console.log "Already Beautiful!"
-        @loadingView.hide()
         return
 
     # console.log 'Beautify time!'