Working on interface components.

ember/app/components/dropdown-select.js

@@ -0,0 +1,30 @@
+import Ember from 'ember';
+
+import Menu from '../utils/menu';
+
+export default Ember.Component.extend({
+    items: [],
+    layoutName: 'components/dropdown-select',
+    classNames: ['dropdown', 'dropdown-select', 'btn-group'],
+    classNameBindings: ['itemCountClass'],
+
+    buttonClass: 'btn-default',
+    menuClass: 'pull-right',
+    icon: 'ellipsis-v',
+
+    mainButtonClass: function() {
+    	return 'btn '+this.get('buttonClass');
+    }.property('buttonClass'),
+
+    dropdownMenuClass: function() {
+    	return 'dropdown-menu '+this.get('menuClass');
+    }.property('menuClass'),
+
+    itemCountClass: function() {
+        return 'item-count-'+this.get('items.length');
+    }.property('items.length'),
+
+    currentItem: function() {
+        return this.get('menu.childViews').findBy('active');
+    }.property('menu.childViews.@each.active')
+});