on-snip-modified (augmentable only) in editor<%>

This method is called whenever a snip within the editor reports that it has been modified (by calling its adminstrator's modified method). The method arguments are the snip that reported a modification-state change, and the snip's new modification state.

See also set-modified.

• (send an-editor on-snip-modified snip modified?) -> void
     snip : snip% object
     modified? : boolean

  If modified? is true and the editor was not already modified (i.e., its is-modified? method reports #f), then the set-modified method is called with #t. If the editor was already modified, then the internal modify-counter is incremented.

  If modified? is #f, and if the modify-counter is 1, then the set-modified method is called with #f (on the assumption that the modify-counter was set to 1 by an earlier call to this method for the same snip).