Fixes #1 beautify on save option

lib/atom-beautify.js

@@ -6,6 +6,10 @@ var beautifyJS = require('js-beautify');
 var beautifyHTML = require('js-beautify').html;
 var beautifyCSS = require('js-beautify').css;
 
+var Subscriber = require('emissary').Subscriber;
+var plugin = module.exports;
+Subscriber.extend(plugin);
+
 function beautify() {
   var text;
   var editor = atom.workspace.getActiveEditor();
@@ -48,6 +52,24 @@ function beautify() {
   }
 }
 
-exports.activate = function() {
+function handleSafeEvent() {
+  atom.workspace.eachEditor(function(editor) {
+    var buffer = editor.getBuffer();
+    plugin.unsubscribe(buffer);
+
+    if (atom.config.get('beautify.beautifyOnSave')) {
+      var events = 'will-be-saved';
+      plugin.subscribe(buffer, events, beautify);
+    }
+  });
+}
+
+plugin.configDefaults = {
+  beautifyOnSave: false
+};
+
+plugin.activate = function() {
+  handleSafeEvent();
+  plugin.subscribe(atom.config.observe('beautify.beautifyOnSave', handleSafeEvent));
   return atom.workspaceView.command('beautify', beautify);
 };

package.json

@@ -4,9 +4,6 @@
   "version": "0.2.0",
   "private": true,
   "description": "Beautify HTML, CSS and Javascript in Atom",
-  "activationEvents": [
-    "beautify"
-  ],
   "repository": "https://github.com/donaldpipowitch/atom-beautify",
   "license": "MIT",
   "author": {
@@ -18,6 +15,7 @@
     "atom": ">0.50.0"
   },
   "dependencies": {
-    "js-beautify": "~1.4.2"
+    "js-beautify": "~1.4.2",
+    "emissary": "^1.0.0"
   }
 }