# console.tcl --
#
# This code constructs the console window for an application. It
# can be used by non-unix systems that do not have built-in support
# for shells.
#
# SCCS: @(#) console.tcl 1.34 96/08/26 20:14:30
#
# Copyright (c) 1995-1996 Sun Microsystems, Inc.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# TODO: history - remember partially written command
# tkConsoleInit --
# This procedure constructs and configures the console windows.
#
# Arguments:
# None.
proc tkConsoleInit {} {
global tcl_platform
if {[info commands macscrollbar] == "macscrollbar"} {
# Use the native scrollbar for the console
rename scrollbar ""
rename macscrollbar scrollbar
}
text .console -yscrollcommand ".sb set" -setgrid true
scrollbar .sb -command ".console yview"
pack .sb -side right -fill both
pack .console -fill both -expand 1 -side left
if {$tcl_platform(platform) == "macintosh"} {
after idle {.console configure -font {Monaco 9 normal}}
.sb configure -bg white
.console configure -bg white -bd 0 -highlightthickness 0 \
-selectbackground black -selectforeground white \
-selectborderwidth 0 -insertwidth 1
.console tag configure sel -relief ridge
bind .console <FocusIn> { .console tag configure sel -borderwidth 0
.console configure -selectbackground black -selectforeground white }
bind .console <FocusOut> { .console tag configure sel -borderwidth 2
.console configure -selectbackground white -selectforeground black }
}
tkConsoleBind .console
.console tag configure stderr -foreground red
.console tag configure stdin -foreground blue
focus .console
wm protocol . WM_DELETE_WINDOW { wm withdraw . }
wm title . "Console"
flush stdout
.console mark set output [.console index "end - 1 char"]
tkTextSetCursor .console end
.console mark set promptEnd insert
.console mark gravity promptEnd left
}
# tkConsoleInvoke --
# Processes the command line input. If the command is complete it
# is evaled in the main interpreter. Otherwise, the continuation
# prompt is added and more input may be added.
#
# Arguments:
# None.
proc tkConsoleInvoke {args} {
set ranges [.console tag ranges input]
set cmd ""
if {$ranges != ""} {
set pos 0
while {[lindex $ranges $pos] != ""} {
set start [lindex $ranges $pos]
set end [lindex $ranges [incr pos]]
append cmd [.console get $start $end]
incr pos
}
}
if {$cmd == ""} {
tkConsolePrompt
} elseif [info complete $cmd] {
.console mark set output end
.console tag delete input
set result [interp record $cmd]
if {$result != ""} {
.console insert insert "$result\n"
}
tkConsoleHistory reset
tkConsolePrompt
} else {
tkConsolePrompt partial
}
.console yview -pickplace insert
}
# tkConsoleHistory --
# This procedure implements command line history for the
# console. In general is evals the history command in the
# main interpreter to obtain the history. The global variable
# histNum is used to store the current location in the history.
#
# Arguments:
# cmd - Which action to take: prev, next, reset.
set histNum 1
proc tkConsoleHistory {cmd} {
global histNum
switch $cmd {
prev {
incr histNum -1
if {$histNum == 0} {
set cmd {history event [expr [history nextid] -1]}
} else {
set cmd "history event $histNum"
}
if {[catch {interp eval $cmd} cmd]} {
incr histNum
return
}
.console delete promptEnd end
.console insert promptEnd $cmd {input stdin}
}
next {
incr histNum
if {$histNum == 0} {
set cmd {history event [expr [history nextid] -1]}
} elseif {$histNum > 0} {
set cmd ""
set histNum 1
} else {
set cmd "history event $histNum"
}
if {$cmd != ""} {
catch {interp eval $cmd} cmd
}
.console delete promptEnd end
.console insert promptEnd $cmd {input stdin}
}
reset {
set histNum 1
}
}
}
# tkConsolePrompt --
# This procedure draws the prompt. If tcl_prompt1 or tcl_prompt2
# exists in the main interpreter it will be called to generate the
# prompt. Otherwise, a hard coded default prompt is printed.
#
# Arguments:
# partial - Flag to specify which prompt to print.
proc tkConsolePrompt {{partial normal}} {
if {$partial == "normal"} {
set temp [.console index "end - 1 char"]
.console mark set output end
if [interp eval "info exists tcl_prompt1"] {
interp eval "eval \[set tcl_prompt1\]"
} else {
puts -nonewline "% "
}
} else {
set temp [.console index output]
.console mark set output end
if [interp eval "info exists tcl_prompt2"] {
interp eval "eval \[set tcl_prompt2\]"
} else {
puts -nonewline "> "
}
}
flush stdout
.console mark set output $temp
tkTextSetCursor .console end
.console mark set promptEnd insert
.console mark gravity promptEnd left
}
# tkConsoleBind --
# This procedure first ensures that the default bindings for the Text
# class have been defined. Then certain bindings are overridden for
# the class.
#
# Arguments:
# None.
proc tkConsoleBind {win} {
bindtags $win "$win Text . all"
# Ignore all Alt, Meta, and Control keypresses unless explicitly bound.
# Otherwise, if a widget binding for one of these is defined, the
# <KeyPress> class binding will also fire and insert the character,
# which is wrong. Ditto for <Escape>.
bind $win <Alt-KeyPress> {# nothing }
bind $win <Meta-KeyPress> {# nothing}
bind $win <Control-KeyPress> {# nothing}
bind $win <Escape> {# nothing}
bind $win <KP_Enter> {# nothing}
bind $win <Tab> {
tkConsoleInsert %W \t
focus %W
break
}
bind $win <Return> {
%W mark set insert {end - 1c}
tkConsoleInsert %W "\n"
tkConsoleInvoke
break
}
bind $win <Delete> {
if {[%W tag nextrange sel 1.0 end] != ""} {
%W tag remove sel sel.first promptEnd
} else {
if [%W compare insert < promptEnd] {
break
}
}
}
bind $win <BackSpace> {
if {[%W tag nextrange sel 1.0 end] != ""} {
%W tag remove sel sel.first promptEnd
} else {
if [%W compare insert <= promptEnd] {
break
}
}
}
foreach left {Control-a Home} {
bind $win <$left> {
if [%W compare insert < promptEnd] {
tkTextSetCursor %W {insert linestart}
} else {
tkTextSetCursor %W promptEnd
}
break
}
}
foreach right {Control-e End} {
bind $win <$right> {
tkTextSetCursor %W {insert lineend}
break
}
}
bind $win <Control-d> {
if [%W compare insert < promptEnd] {
break
}
}
bind $win <Control-k> {
if [%W compare insert < promptEnd] {
%W mark set insert promptEnd
}
}
bind $win <Control-t> {
if [%W compare insert < promptEnd] {
break
}
}
bind $win <Meta-d> {
if [%W compare insert < promptEnd] {
break
}
}
bind $win <Meta-BackSpace> {
if [%W compare insert <= promptEnd] {
break
}
}
bind $win <Control-h> {
if [%W compare insert <= promptEnd] {
break
}
}
foreach prev {Control-p Up} {
bind $win <$prev> {
tkConsoleHistory prev
break
}
}
foreach prev {Control-n Down} {
bind $win <$prev> {
tkConsoleHistory next
break
}
}
bind $win <Control-v> {
if [%W compare insert > promptEnd] {
catch {
%W insert insert [selection get -displayof %W] {input stdin}
%W see insert
}
}
break
}
bind $win <Insert> {
catch {tkConsoleInsert %W [selection get -displayof %W]}
break
}
bind $win <KeyPress> {
tkConsoleInsert %W %A
break
}
foreach left {Control-b Left} {
bind $win <$left> {
if [%W compare insert == promptEnd] {
break
}
tkTextSetCursor %W insert-1c
break
}
}
foreach right {Control-f Right} {
bind $win <$right> {
tkTextSetCursor %W insert+1c
break
}
}
bind $win <F9> {
eval destroy [winfo child .]
if {$tcl_platform(platform) == "macintosh"} {
source -rsrc Console
} else {
source [file join $tk_library console.tcl]
}
}
bind $win <<Cut>> {
continue
}
bind $win <<Copy>> {
if {[selection own -displayof %W] == "%W"} {
clipboard clear -displayof %W
catch {
clipboard append -displayof %W [selection get -displayof %W]
}
}
break
}
bind $win <<Paste>> {
catch {
set clip [selection get -displayof %W -selection CLIPBOARD]
set list [split $clip \n\r]
tkConsoleInsert %W [lindex $list 0]
foreach x [lrange $list 1 end] {
%W mark set insert {end - 1c}
tkConsoleInsert %W "\n"
tkConsoleInvoke
tkConsoleInsert %W $x
}
}
break
}
}
# tkConsoleInsert --
# Insert a string into a text at the point of the insertion cursor.
# If there is a selection in the text, and it covers the point of the
# insertion cursor, then delete the selection before inserting. Insertion
# is restricted to the prompt area.
#
# Arguments:
# w - The text window in which to insert the string
# s - The string to insert (usually just a single character)
proc tkConsoleInsert {w s} {
if {$s == ""} {
return
}
catch {
if {[$w compare sel.first <= insert]
&& [$w compare sel.last >= insert]} {
$w tag remove sel sel.first promptEnd
$w delete sel.first sel.last
}
}
if {[$w compare insert < promptEnd]} {
$w mark set insert end
}
$w insert insert $s {input stdin}
$w see insert
}
# tkConsoleOutput --
#
# This routine is called directly by ConsolePutsCmd to cause a string
# to be displayed in the console.
#
# Arguments:
# dest - The output tag to be used: either "stderr" or "stdout".
# string - The string to be displayed.
proc tkConsoleOutput {dest string} {
.console insert output $string $dest
.console see insert
}
# tkConsoleExit --
#
# This routine is called by ConsoleEventProc when the main window of
# the application is destroyed.
#
# Arguments:
# None.
proc tkConsoleExit {} {
exit
}
# now initialize the console
tkConsoleInit
