Best way for check user acces to text format

Hello,

I found a bug in asset_widget module.

How to reproduce on fresh drupal installation:
1. Install drupal core;
2. Enable and install ckeditor, asset, asset_widget;
3. Configure default "Full" ckeditor profile for use asset widget;
4. Go to page on creation "Basic page" node. Asset widget exist - ok.
5. Go to user/1/edit and disable role "administrator".
6. Go to page on creation "Basic page" node. Asset widget missing - not ok (As you know, user with uid=1 must have full access).