11 Interactive Value Port
| (require mrlib/interactive-value-port) | package: gui-lib |
procedure
(set-interactive-display-handler port [ #:snip-handler snip-handler]) → void? port : output-port?
snip-handler : (or/c #f (-> (is-a?/c snip%) output-port? any)) = #f
Sets port’s display handler (via
port-display-handler) so that when it encounters
these values:
syntax objects
snips
it uses write-special to send snips to the port and uses mrlib/syntax-browser to turn syntax object into snips and then uses write-special with the result to send it to the port. Otherwise, it behaves like the default handler.
If snip-handler is not #f, then set-interactive-display-handler passes any snips to it (not those it creates by mrlib/syntax-browser) instead of calling write-special.
To show values embedded in lists and other compound object, it uses pretty-display.
procedure
(set-interactive-write-handler port [ #:snip-handler snip-handler]) → void? port : output-port?
snip-handler : (or/c #f (-> (is-a?/c snip%) output-port? any)) = #f
procedure
(set-interactive-print-handler port [ #:snip-handler snip-handler]) → void? port : output-port?
snip-handler : (or/c #f (-> (is-a?/c snip%) output-port? any)) = #f