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# -*- tcl -*-
# # ## ### ##### ######## #############
# (C) 2009 Andreas Kupries
# @@ Meta Begin
# Package tcl::chan::textwindow 1
# Meta as::author {Andreas Kupries}
# Meta as::copyright 2009
# Meta as::license BSD
# Meta as::credit To Bryan Oakley for rotext, see
# Meta as::credit http://wiki.tcl.tk/22036. His code was
# Meta as::credit used here as template for the text
# Meta as::credit widget portions of the channel.
# Meta description Implementation of a text window
# Meta description channel, using Tcl 8.5's channel
# Meta description reflection support. Exports a single
# Meta description command for the creation of new
# Meta description channels. No arguments. Result is the
# Meta description handle of the new channel.
# Meta platform tcl
# Meta require TclOO
# Meta require tcl::chan::events
# Meta require {Tcl 8.5}
# @@ Meta End
# # ## ### ##### ######## #############
package require Tcl 8.5
package require TclOO
package require tcl::chan::events
# # ## ### ##### ######## #############
namespace eval ::tcl::chan {}
proc ::tcl::chan::textwindow {w} {
set chan [::chan create {write} [textwindow::implementation new $w]]
fconfigure $chan -encoding utf-8 -buffering none
return $chan
}
oo::class create ::tcl::chan::textwindow::implementation {
superclass ::tcl::chan::events ; # -> initialize, finalize, watch
constructor {w} {
set widget $w
next
}
# # ## ### ##### ######## #############
variable widget
# # ## ### ##### ######## #############
method initialize {args} {
my allow write
next {*}$args
}
method write {c data} {
# NOTE: How is encoding convertfrom dealing with a partial
# utf-8 character at the end of the buffer ? Should be saved
# up for the next buffer. No idea if we can.
$widget insert end [encoding convertfrom utf-8 $data]
$widget see end
return [string length $data]
}
}
# # ## ### ##### ######## #############
package provide tcl::chan::textwindow 1
return
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