#!/bin/sh # the next line restarts using wish \ exec wish "$0" "$@" # rmt -- # This script implements a simple remote-control mechanism for # Tk applications. It allows you to select an application and # then type commands to that application. # # RCS: @(#) $Id: rmt,v 1.1.4.1 1998/09/30 02:17:52 stanton Exp $ wm title . "Tk Remote Controller" wm iconname . "Tk Remote" wm minsize . 1 1 # The global variable below keeps track of the remote application # that we're sending to. If it's an empty string then we execute # the commands locally. set app "local" # The global variable below keeps track of whether we're in the # middle of executing a command entered via the text. set executing 0 # The global variable below keeps track of the last command executed, # so it can be re-executed in response to !! commands. set lastCommand "" # Create menu bar. Arrange to recreate all the information in the # applications sub-menu whenever it is cascaded to. frame .menu -relief raised -bd 2 pack .menu -side top -fill x menubutton .menu.file -text "File" -menu .menu.file.m -underline 0 menu .menu.file.m .menu.file.m add cascade -label "Select Application" \ -menu .menu.file.m.apps -underline 0 .menu.file.m add command -label "Quit" -command "destroy ." -underline 0 menu .menu.file.m.apps -postcommand fillAppsMenu pack .menu.file -side left # Create text window and scrollbar. text .t -relief sunken -bd 2 -yscrollcommand ".s set" -setgrid true scrollbar .s -command ".t yview" pack .s -side right -fill both pack .t -side left # Create a binding to forward commands to the target application, # plus modify many of the built-in bindings so that only information # in the current command can be deleted (can still set the cursor # earlier in the text and select and insert; just can't delete). bindtags .t {.t Text . all} bind .t { .t mark set insert {end - 1c} .t insert insert \n invoke break } bind .t { catch {.t tag remove sel sel.first promptEnd} if {[.t tag nextrange sel 1.0 end] == ""} { if [.t compare insert < promptEnd] { break } } } bind .t { catch {.t tag remove sel sel.first promptEnd} if {[.t tag nextrange sel 1.0 end] == ""} { if [.t compare insert <= promptEnd] { break } } } bind .t { if [.t compare insert < promptEnd] { break } } bind .t { if [.t compare insert < promptEnd] { .t mark set insert promptEnd } } bind .t { if [.t compare insert < promptEnd] { break } } bind .t { if [.t compare insert < promptEnd] { break } } bind .t { if [.t compare insert <= promptEnd] { break } } bind .t { if [.t compare insert <= promptEnd] { break } } auto_load tkTextInsert proc tkTextInsert {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 } } $w insert insert $s $w see insert } .t tag configure bold -font {Courier 12 bold} # The procedure below is used to print out a prompt at the # insertion point (which should be at the beginning of a line # right now). proc prompt {} { global app .t insert insert "$app: " .t mark set promptEnd {insert} .t mark gravity promptEnd left .t tag add bold {promptEnd linestart} promptEnd } # The procedure below executes a command (it takes everything on the # current line after the prompt and either sends it to the remote # application or executes it locally, depending on "app". proc invoke {} { global app executing lastCommand set cmd [.t get promptEnd insert] incr executing 1 if [info complete $cmd] { if {$cmd == "!!\n"} { set cmd $lastCommand } else { set lastCommand $cmd } if {$app == "local"} { set result [catch [list uplevel #0 $cmd] msg] } else { set result [catch [list send $app $cmd] msg] } if {$result != 0} { .t insert insert "Error: $msg\n" } else { if {$msg != ""} { .t insert insert $msg\n } } prompt .t mark set promptEnd insert } incr executing -1 .t yview -pickplace insert } # The following procedure is invoked to change the application that # we're talking to. It also updates the prompt for the current # command, unless we're in the middle of executing a command from # the text item (in which case a new prompt is about to be output # so there's no need to change the old one). proc newApp appName { global app executing set app $appName if !$executing { .t mark gravity promptEnd right .t delete "promptEnd linestart" promptEnd .t insert promptEnd "$appName: " .t tag add bold "promptEnd linestart" promptEnd .t mark gravity promptEnd left } return {} } # The procedure below will fill in the applications sub-menu with a list # of all the applications that currently exist. proc fillAppsMenu {} { catch {.menu.file.m.apps delete 0 last} foreach i [lsort [winfo interps]] { .menu.file.m.apps add command -label $i -command [list newApp $i] } .menu.file.m.apps add command -label local -command {newApp local} } set app [winfo name .] prompt focus .t