Limit file styles available to user

similar issue for reference #1608172: Skip wysiwyg format dialog, set and use default values programmatically

It's certainly possible to implement hook_form_media_format_form_alter() in a module, and manipulate everything there.

But hopefully a better (UI) solution for the general media-format vs image-styles confusion will emerge. The situation at present is convoluted and confusing to say the least.

As John Pitcairn mentioned in #3, you can currently modify the file styles presented to users by implementing hook_form_media_format_form_alter() in a custom module.

For example, to remove the "large" file style from being selectable, add the following to the module "example":

function example_media_wysiwyg_allowed_view_modes_alter(&$view_modes, &$file) {
  unset('media_large');
}

Work on creating an easier method of configuring the available file styles in occurring in #1632502: Limit WYSIWYG View Modes to Enabled Modes and #1283844: [meta] Improve WYSIWYG integration.

For anyone interested, I'm attaching some example code that will modify the browser settings form allowing you to select which file view/display modes to allow. I'm not attaching a patch since I don't think this is really the way we want to take it, but it's a decent stop-gap measure.