+
+ ##
+ # Check if collection preview is allowed for the given filename with extension
+ #
+ def preview_allowed_for file_name
+ file_type = MIME::Types.type_for(file_name).first
+ if file_type.nil?
+ if file_name.downcase.end_with?('.cwl') # unknown mime type, but we support preview
+ true
+ else
+ false
+ end
+ elsif (file_type.raw_media_type == "text") || (file_type.raw_media_type == "image")
+ true
+ elsif (file_type.raw_media_type == "application") &&
+ (Rails.configuration.application_mimetypes_with_view_icon.include? (file_type.sub_type))
+ true
+ else
+ false
+ end
+ end