racket/collects/scribblings/gui/string-snip-class.scrbl
Eli Barzilay ac26fe7554 A ton of @scheme*' -> @racket*' and related updates.
Also, updates some of the mzlib files to point at `racket/*' libraries
rather than to `scheme/*' ones.
2011-06-25 04:08:47 -04:00

47 lines
1.3 KiB
Racket

#lang scribble/doc
@(require "common.rkt")
@defclass/title[string-snip% snip% ()]{
An instance of @racket[string-snip%] is created automatically when
text is inserted into a text editor. See also @xmethod[text%
on-new-string-snip].
@defconstructor*/make[(([allocsize exact-nonnegative-integer? 0])
([s string?]))]{
Creates a string snip whose initial content is @racket[s], if
supplied, empty otherwise. In the latter case, the optional
@racket[allocsize] argument is a hint about how much storage space
for text should be initially allocated by the snip.
}
@defmethod[(insert [s string?]
[len exact-nonnegative-integer?]
[pos exact-nonnegative-integer? 0])
void?]{
Inserts @racket[s] (with length @racket[len]) into the snip at relative
@techlink{position} @racket[pos] within the snip.
}
@defmethod[(read [len exact-nonnegative-integer?]
[f (is-a?/c editor-stream-in%)])
void?]{
Reads the snip's data from the given stream.
The @racket[len] argument specifies the maximum length of the text to
be read. (When a text snip is written to a file, the very first
field is the length of the text contained in the snip.) This method
is usually invoked by the text snip class's @method[snip-class% read]
method.
}}