2 # the next line restarts using wish \
6 # This script implements a simple remote-control mechanism for
7 # Tk applications. It allows you to select an application and
8 # then type commands to that application.
10 # RCS: @(#) $Id: rmt,v 1.2 1998/09/14 18:23:29 stanton Exp $
12 wm title . "Tk Remote Controller"
13 wm iconname . "Tk Remote"
16 # The global variable below keeps track of the remote application
17 # that we're sending to. If it's an empty string then we execute
18 # the commands locally.
22 # The global variable below keeps track of whether we're in the
23 # middle of executing a command entered via the text.
27 # The global variable below keeps track of the last command executed,
28 # so it can be re-executed in response to !! commands.
32 # Create menu bar. Arrange to recreate all the information in the
33 # applications sub-menu whenever it is cascaded to.
35 frame .menu -relief raised -bd 2
36 pack .menu -side top -fill x
37 menubutton .menu.file -text "File" -menu .menu.file.m -underline 0
39 .menu.file.m add cascade -label "Select Application" \
40 -menu .menu.file.m.apps -underline 0
41 .menu.file.m add command -label "Quit" -command "destroy ." -underline 0
42 menu .menu.file.m.apps -postcommand fillAppsMenu
43 pack .menu.file -side left
45 # Create text window and scrollbar.
47 text .t -relief sunken -bd 2 -yscrollcommand ".s set" -setgrid true
48 scrollbar .s -command ".t yview"
49 pack .s -side right -fill both
52 # Create a binding to forward commands to the target application,
53 # plus modify many of the built-in bindings so that only information
54 # in the current command can be deleted (can still set the cursor
55 # earlier in the text and select and insert; just can't delete).
57 bindtags .t {.t Text . all}
59 .t mark set insert {end - 1c}
65 catch {.t tag remove sel sel.first promptEnd}
66 if {[.t tag nextrange sel 1.0 end] == ""} {
67 if [.t compare insert < promptEnd] {
73 catch {.t tag remove sel sel.first promptEnd}
74 if {[.t tag nextrange sel 1.0 end] == ""} {
75 if [.t compare insert <= promptEnd] {
81 if [.t compare insert < promptEnd] {
86 if [.t compare insert < promptEnd] {
87 .t mark set insert promptEnd
91 if [.t compare insert < promptEnd] {
96 if [.t compare insert < promptEnd] {
100 bind .t <Meta-BackSpace> {
101 if [.t compare insert <= promptEnd] {
105 bind .t <Control-h> {
106 if [.t compare insert <= promptEnd] {
110 auto_load tkTextInsert
111 proc tkTextInsert {w s} {
116 if {[$w compare sel.first <= insert]
117 && [$w compare sel.last >= insert]} {
118 $w tag remove sel sel.first promptEnd
119 $w delete sel.first sel.last
126 .t tag configure bold -font {Courier 12 bold}
128 # The procedure below is used to print out a prompt at the
129 # insertion point (which should be at the beginning of a line
134 .t insert insert "$app: "
135 .t mark set promptEnd {insert}
136 .t mark gravity promptEnd left
137 .t tag add bold {promptEnd linestart} promptEnd
140 # The procedure below executes a command (it takes everything on the
141 # current line after the prompt and either sends it to the remote
142 # application or executes it locally, depending on "app".
145 global app executing lastCommand
146 set cmd [.t get promptEnd insert]
148 if [info complete $cmd] {
149 if {$cmd == "!!\n"} {
154 if {$app == "local"} {
155 set result [catch [list uplevel #0 $cmd] msg]
157 set result [catch [list send $app $cmd] msg]
160 .t insert insert "Error: $msg\n"
163 .t insert insert $msg\n
167 .t mark set promptEnd insert
170 .t yview -pickplace insert
173 # The following procedure is invoked to change the application that
174 # we're talking to. It also updates the prompt for the current
175 # command, unless we're in the middle of executing a command from
176 # the text item (in which case a new prompt is about to be output
177 # so there's no need to change the old one).
179 proc newApp appName {
183 .t mark gravity promptEnd right
184 .t delete "promptEnd linestart" promptEnd
185 .t insert promptEnd "$appName: "
186 .t tag add bold "promptEnd linestart" promptEnd
187 .t mark gravity promptEnd left
192 # The procedure below will fill in the applications sub-menu with a list
193 # of all the applications that currently exist.
195 proc fillAppsMenu {} {
196 catch {.menu.file.m.apps delete 0 last}
197 foreach i [lsort [winfo interps]] {
198 .menu.file.m.apps add command -label $i -command [list newApp $i]
200 .menu.file.m.apps add command -label local -command {newApp local}
203 set app [winfo name .]