<div class="form-group">
<button class="btn btn-primary col-lg-12" data-ngf-drag-over-class="dragover" ngf-multiple="{{_ctrl.config.multiple}}" ngf-allow-dir="{{_ctrl.config.allowDir}}" data-ngf-change="_ctrl.onChange($files, $event, $rejected)"> {{_ctrl.config.label}}
</button>
</div>