Add Apple Icon preview

app/assets/javascripts/wizard/components/image-preview-apple-touch-icon-url.js.es6

@@ -0,0 +1,35 @@
+import { observes } from 'ember-addons/ember-computed-decorators';
+
+import {
+  createPreviewComponent,
+  loadImage,
+} from 'wizard/lib/preview';
+
+export default createPreviewComponent(325, 125, {
+  ios: null,
+  image: null,
+
+  @observes('field.value')
+  imageChanged() {
+    this.reload();
+  },
+
+  load() {
+    return Ember.RSVP.Promise.all([
+      loadImage('/images/wizard/apple-mask.png'),
+      loadImage(this.get('field.value'))
+    ]).then(result => {
+      this.ios = result[0];
+      this.image = result[1];
+    });
+
+    return loadImage(this.get('field.value')).then(image => {
+      this.image = image;
+    });
+  },
+
+  paint(ctx, colors, width, height) {
+    ctx.drawImage(this.image, 10, 8, 87, 87);
+    ctx.drawImage(this.ios, 0, 0, width, height);
+  }
+});

app/assets/javascripts/wizard/components/image-preview-favicon-url.js.es6

@@ -16,8 +16,8 @@ export default createPreviewComponent(371, 124, {
 
   load() {
     return Ember.RSVP.Promise.all([
-        loadImage('/images/wizard/tab.png'),
-        loadImage(this.get('field.value'))
+      loadImage('/images/wizard/tab.png'),
+      loadImage(this.get('field.value'))
     ]).then(result => {
       this.tab = result[0];
       this.image = result[1];