2 # the next line restarts using wish \
3 exec wish "$0" ${1+"$@"}
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.
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 . configure -menu [menu .menu]
37 menu .menu.file.apps -postcommand fillAppsMenu
38 .menu add cascade -label "File" -underline 0 -menu .menu.file
39 .menu.file add cascade -label "Select Application" -underline 0 \
41 .menu.file add command -label "Quit" -command "destroy ." -underline 0
43 # Create text window and scrollbar.
45 text .t -yscrollcommand ".s set" -setgrid true
46 scrollbar .s -command ".t yview"
47 grid .t .s -sticky nsew
48 grid rowconfigure . 0 -weight 1
49 grid columnconfigure . 0 -weight 1
51 # Create a binding to forward commands to the target application,
52 # plus modify many of the built-in bindings so that only information
53 # in the current command can be deleted (can still set the cursor
54 # earlier in the text and select and insert; just can't delete).
56 bindtags .t {.t Text . all}
58 .t mark set insert {end - 1c}
64 catch {.t tag remove sel sel.first promptEnd}
65 if {[.t tag nextrange sel 1.0 end] eq ""} {
66 if {[.t compare insert < promptEnd]} {
72 catch {.t tag remove sel sel.first promptEnd}
73 if {[.t tag nextrange sel 1.0 end] eq ""} {
74 if {[.t compare insert <= promptEnd]} {
80 if {[.t compare insert < promptEnd]} {
85 if {[.t compare insert < promptEnd]} {
86 .t mark set insert promptEnd
90 if {[.t compare insert < promptEnd]} {
95 if {[.t compare insert < promptEnd]} {
99 bind .t <Meta-BackSpace> {
100 if {[.t compare insert <= promptEnd]} {
104 bind .t <Control-h> {
105 if {[.t compare insert <= promptEnd]} {
109 ### This next bit *isn't* nice - DKF ###
110 auto_load tk::TextInsert
111 proc tk::TextInsert {w s} {
117 [$w compare sel.first <= insert] && [$w compare sel.last >= insert]
119 $w tag remove sel sel.first promptEnd
120 $w delete sel.first sel.last
127 .t configure -font {Courier 12}
128 .t tag configure bold -font {Courier 12 bold}
130 # The procedure below is used to print out a prompt at the
131 # insertion point (which should be at the beginning of a line
136 .t insert insert "$app: "
137 .t mark set promptEnd {insert}
138 .t mark gravity promptEnd left
139 .t tag add bold {promptEnd linestart} promptEnd
142 # The procedure below executes a command (it takes everything on the
143 # current line after the prompt and either sends it to the remote
144 # application or executes it locally, depending on "app".
147 global app executing lastCommand
148 set cmd [.t get promptEnd insert]
150 if {[info complete $cmd]} {
151 if {$cmd eq "!!\n"} {
156 if {$app eq "local"} {
157 set result [catch [list uplevel #0 $cmd] msg]
159 set result [catch [list send $app $cmd] msg]
162 .t insert insert "Error: $msg\n"
163 } elseif {$msg ne ""} {
164 .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 set m .menu.file.apps
197 catch {$m delete 0 last}
198 foreach i [lsort [winfo interps]] {
199 $m add command -label $i -command [list newApp $i]
201 $m add command -label local -command {newApp local}
204 set app [winfo name .]