Re-organizing components to be more modular, adding loading bars

app/assets/javascripts/components/features/ui/components/upload_button.jsx

@@ -0,0 +1,37 @@
+import PureRenderMixin from 'react-addons-pure-render-mixin';
+import Button          from '../../../components/button';
+
+const UploadButton = React.createClass({
+
+  propTypes: {
+    disabled: React.PropTypes.bool,
+    onSelectFile: React.PropTypes.func.isRequired
+  },
+
+  mixins: [PureRenderMixin],
+
+  handleChange (e) {
+    if (e.target.files.length > 0) {
+      this.props.onSelectFile(e.target.files);
+    }
+  },
+
+  handleClick () {
+    this.refs.fileElement.click();
+  },
+
+  render () {
+    return (
+      <div>
+        <Button disabled={this.props.disabled} onClick={this.handleClick} block={true}>
+          <i className='fa fa-fw fa-photo' /> Add images
+        </Button>
+
+        <input ref='fileElement' type='file' multiple={false} onChange={this.handleChange} disabled={this.props.disabled} style={{ display: 'none' }} />
+      </div>
+    );
+  }
+
+});
+
+export default UploadButton;