+ validates :t, :presence => true, :numericality => {:greater_than_or_equal_to => 0}
+
+ @@repeat_texts = ['repeat', 'repeat-x', 'repeat-y', 'no-repeat']
+
+ def self.by_author_list_includes
+ {
+ :panel => {
+ :author => {}
+ }
+ }
+ end
+
+ def self.list_opt_for_panel
+ {
+ :ground_pictures => {
+ :picture => {:artist => {}, :license => {}}
+ }
+ }
+ end
+
+ def self.show_opt_for_panel
+ {
+ :ground_pictures => {
+ :picture => {:artist => {}, :license => {}}
+ }
+ }
+ end
+
+ def self.json_opt_for_panel
+ {
+ :picture => {:artist => {}, :license => {}}
+ }
+ end
+
+ def self.has_picture?
+ true
+ end