Switch to FileSaver lib for downloading Blob files, add Blob polyfill

assets/js/src/newsletter_editor/components/save.js

@@ -3,8 +3,10 @@ define([
     'mailpoet',
     'backbone',
     'backbone.marionette',
-    'jquery'
+    'jquery',
-  ], function(App, MailPoet, Backbone, Marionette, jQuery) {
+    'blob',
+    'filesaver'
+  ], function(App, MailPoet, Backbone, Marionette, jQuery, Blob, FileSaver) {
 
   "use strict";
 
@@ -54,31 +56,15 @@ define([
   };
 
   Module.exportTemplate = function(options) {
-    if (!window.Blob || !window.URL) {
-      // TODO: Gracefully exit on incompatible browsers
-      console.log('Template export requires a browser with Blob and URL support.');
-      return;
-    }
-
     var data = _.extend(options || {}, {
       body: App.getBody(),
     });
+    var blob = new Blob(
+      [JSON.stringify(data)],
+      { type: 'application/json;charset=utf-8' }
+    );
 
-    // Create a template file and force download it
+    FileSaver.saveAs(blob, 'template.json');
-
-    var blob = new window.Blob([JSON.stringify(data)], { type: 'application/json' }),
-        url = window.URL.createObjectURL(blob),
-        anchor = document.createElement('a');
-
-    anchor.href = url;
-    anchor.download = 'template.json';
-    anchor.style.display = 'none';
-    document.body.appendChild(anchor);
-
-    anchor.click();
-
-    window.URL.revokeObjectURL(url);
-    document.body.removeChild(anchor);
   };
 
   Module.SaveView = Marionette.LayoutView.extend({

assets/js/src/newsletters/templates.jsx

@@ -1,6 +1,7 @@
 define(
   [
     'react',
+    'underscore',
     'mailpoet',
     'react-router',
     'classnames',
@@ -8,6 +9,7 @@ define(
   ],
   function(
     React,
+    _,
     MailPoet,
     Router,
     classNames,
@@ -33,12 +35,21 @@ define(
       handleSubmit: function(e) {
         e.preventDefault();
 
-        var reader = new FileReader(),
+        if (_.size(this.refs.templateFile.files) <= 0) return false;
+
+        var file = _.first(this.refs.templateFile.files),
+            reader = new FileReader(),
             saveTemplate = this.saveTemplate;
+
         reader.onload = function(e) {
-          saveTemplate(JSON.parse(e.target.result));
+          try {
+            saveTemplate(JSON.parse(e.target.result));
+          } catch (err) {
+            MailPoet.Notice.error('This template file appears to be malformed. Please try another one.');
+          }
         }.bind(this);
-        reader.readAsText(this.refs.templateFile.files[0]);
+
+        reader.readAsText(file);
       },
       render: function() {
         return (

package.json

@@ -4,6 +4,8 @@
     "install": "napa"
   },
   "napa": {
+    "blob": "eligrey/Blob.js.git",
+    "filesaver": "eligrey/FileSaver.js.git",
     "sticky-kit": "leafo/sticky-kit.git"
   },
   "dependencies": {
@@ -23,9 +25,9 @@
     "moment": "^2.10.3",
     "napa": "^1.2.0",
     "papaparse": "4.1.1",
-    "react": "0.14.0",
+    "react": "^0.14.1",
     "react-checkbox-group": "0.2.2",
-    "react-dom": "^0.14.0",
+    "react-dom": "^0.14.1",
     "react-infinity": "1.2.2",
     "react-prefixr": "0.1.0",
     "react-router": "^1.0.0-rc3",

webpack.config.js

@@ -21,7 +21,9 @@ baseConfig = {
       'backbone.supermodel$': 'backbone.supermodel/build/backbone.supermodel.js',
       'sticky-kit': 'sticky-kit/jquery.sticky-kit',
       'interact$': 'interact.js/interact.js',
-      'spectrum$': 'spectrum-colorpicker/spectrum.js'
+      'spectrum$': 'spectrum-colorpicker/spectrum.js',
+      'blob$': 'blob/Blob.js',
+      'filesaver$': 'filesaver/FileSaver.js'
     },
   },
   node: {
@@ -41,6 +43,10 @@ baseConfig = {
         include: require.resolve('underscore'),
         loader: 'expose-loader?_',
       },
+      {
+        include: /Blob.js$/,
+        loader: 'exports-loader?window.Blob',
+      },
       {
         test: /backbone.supermodel/,
         loader: 'exports-loader?Backbone.SuperModel',
@@ -82,6 +88,8 @@ config.push(_.extend({}, baseConfig, {
       'select2',
       'spectrum',
       'sticky-kit',
+      'blob',
+      'filesaver',
 
       'newsletter_editor/communicationsFix.js',
       'newsletter_editor/App',
@@ -145,6 +153,8 @@ config.push(_.extend({}, baseConfig, {
       'backbone.supermodel',
       'backbone.radio',
       'select2',
+      'blob',
+      'filesaver',
 
       'newsletter_editor/communicationsFix.js',
       'newsletter_editor/App',
@@ -209,6 +219,8 @@ config.push(_.extend({}, baseConfig, {
       'sticky-kit': 'sticky-kit/jquery.sticky-kit',
       'backbone.marionette': 'backbone.marionette/lib/backbone.marionette',
       'backbone.supermodel$': 'backbone.supermodel/build/backbone.supermodel.js',
+      'blob$': 'blob/Blob.js',
+      'filesaver$': 'filesaver/FileSaver.js'
     },
   },
   externals: {