Each eventspace has an instance of editor-data-class-list<%>,
obtained with (get-the-editor-data-class-list). New
instances cannot be created directly. This list keeps a list of
editor data classes; this list is needed for loading snips from a
file. See also Editor Data.
(send an-editor-data-class-list add snipclass) → void? snipclass : (is-a?/c editor-data-class%)
Adds a snip data class to the list. If a class with the same name already
exists in the list, this one will not be added.
Finds a snip data class from the list with the given name, returning
#f if none can be found.
(send an-editor-data-class-list find-position class) → exact-nonnegative-integer? class : (is-a?/c editor-data-class%)
Returns an index into the list for the specified class.
(send an-editor-data-class-list nth n) → (or/c (is-a?/c editor-data-class%) false/c) n : exact-nonnegative-integer?
Returns the nth class in the list (counting from 0), returning
#f if the list has n or less classes.
(send an-editor-data-class-list number) → exact-nonnegative-integer?
Returns the number of editor data classes in the list.