| 1 | #!/bin/sh |
| 2 | # the next line restarts using wish \ |
| 3 | exec wish8.4 "$0" "$@" |
| 4 | |
| 5 | # rmt -- |
| 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. |
| 9 | # |
| 10 | # RCS: @(#) $Id: rmt,v 1.3 2001/10/29 16:23:32 dkf Exp $ |
| 11 | |
| 12 | wm title . "Tk Remote Controller" |
| 13 | wm iconname . "Tk Remote" |
| 14 | wm minsize . 1 1 |
| 15 | |
| 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. |
| 19 | |
| 20 | set app "local" |
| 21 | |
| 22 | # The global variable below keeps track of whether we're in the |
| 23 | # middle of executing a command entered via the text. |
| 24 | |
| 25 | set executing 0 |
| 26 | |
| 27 | # The global variable below keeps track of the last command executed, |
| 28 | # so it can be re-executed in response to !! commands. |
| 29 | |
| 30 | set lastCommand "" |
| 31 | |
| 32 | # Create menu bar. Arrange to recreate all the information in the |
| 33 | # applications sub-menu whenever it is cascaded to. |
| 34 | |
| 35 | . configure -menu [menu .menu] |
| 36 | menu .menu.file |
| 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 \ |
| 40 | -menu .menu.file.apps |
| 41 | .menu.file add command -label "Quit" -command "destroy ." -underline 0 |
| 42 | |
| 43 | # Create text window and scrollbar. |
| 44 | |
| 45 | text .t -relief sunken -bd 2 -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 |
| 50 | |
| 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). |
| 55 | |
| 56 | bindtags .t {.t Text . all} |
| 57 | bind .t <Return> { |
| 58 | .t mark set insert {end - 1c} |
| 59 | .t insert insert \n |
| 60 | invoke |
| 61 | break |
| 62 | } |
| 63 | bind .t <Delete> { |
| 64 | catch {.t tag remove sel sel.first promptEnd} |
| 65 | if {[.t tag nextrange sel 1.0 end] == ""} { |
| 66 | if [.t compare insert < promptEnd] { |
| 67 | break |
| 68 | } |
| 69 | } |
| 70 | } |
| 71 | bind .t <BackSpace> { |
| 72 | catch {.t tag remove sel sel.first promptEnd} |
| 73 | if {[.t tag nextrange sel 1.0 end] == ""} { |
| 74 | if [.t compare insert <= promptEnd] { |
| 75 | break |
| 76 | } |
| 77 | } |
| 78 | } |
| 79 | bind .t <Control-d> { |
| 80 | if [.t compare insert < promptEnd] { |
| 81 | break |
| 82 | } |
| 83 | } |
| 84 | bind .t <Control-k> { |
| 85 | if [.t compare insert < promptEnd] { |
| 86 | .t mark set insert promptEnd |
| 87 | } |
| 88 | } |
| 89 | bind .t <Control-t> { |
| 90 | if [.t compare insert < promptEnd] { |
| 91 | break |
| 92 | } |
| 93 | } |
| 94 | bind .t <Meta-d> { |
| 95 | if [.t compare insert < promptEnd] { |
| 96 | break |
| 97 | } |
| 98 | } |
| 99 | bind .t <Meta-BackSpace> { |
| 100 | if [.t compare insert <= promptEnd] { |
| 101 | break |
| 102 | } |
| 103 | } |
| 104 | bind .t <Control-h> { |
| 105 | if [.t compare insert <= promptEnd] { |
| 106 | break |
| 107 | } |
| 108 | } |
| 109 | auto_load tkTextInsert |
| 110 | proc tkTextInsert {w s} { |
| 111 | if {$s == ""} { |
| 112 | return |
| 113 | } |
| 114 | catch { |
| 115 | if {[$w compare sel.first <= insert] |
| 116 | && [$w compare sel.last >= insert]} { |
| 117 | $w tag remove sel sel.first promptEnd |
| 118 | $w delete sel.first sel.last |
| 119 | } |
| 120 | } |
| 121 | $w insert insert $s |
| 122 | $w see insert |
| 123 | } |
| 124 | |
| 125 | .t configure -font {Courier 12} |
| 126 | .t tag configure bold -font {Courier 12 bold} |
| 127 | |
| 128 | # The procedure below is used to print out a prompt at the |
| 129 | # insertion point (which should be at the beginning of a line |
| 130 | # right now). |
| 131 | |
| 132 | proc prompt {} { |
| 133 | global app |
| 134 | .t insert insert "$app: " |
| 135 | .t mark set promptEnd {insert} |
| 136 | .t mark gravity promptEnd left |
| 137 | .t tag add bold {promptEnd linestart} promptEnd |
| 138 | } |
| 139 | |
| 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". |
| 143 | |
| 144 | proc invoke {} { |
| 145 | global app executing lastCommand |
| 146 | set cmd [.t get promptEnd insert] |
| 147 | incr executing 1 |
| 148 | if [info complete $cmd] { |
| 149 | if {$cmd == "!!\n"} { |
| 150 | set cmd $lastCommand |
| 151 | } else { |
| 152 | set lastCommand $cmd |
| 153 | } |
| 154 | if {$app == "local"} { |
| 155 | set result [catch [list uplevel #0 $cmd] msg] |
| 156 | } else { |
| 157 | set result [catch [list send $app $cmd] msg] |
| 158 | } |
| 159 | if {$result != 0} { |
| 160 | .t insert insert "Error: $msg\n" |
| 161 | } else { |
| 162 | if {$msg != ""} { |
| 163 | .t insert insert $msg\n |
| 164 | } |
| 165 | } |
| 166 | prompt |
| 167 | .t mark set promptEnd insert |
| 168 | } |
| 169 | incr executing -1 |
| 170 | .t yview -pickplace insert |
| 171 | } |
| 172 | |
| 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). |
| 178 | |
| 179 | proc newApp appName { |
| 180 | global app executing |
| 181 | set app $appName |
| 182 | if !$executing { |
| 183 | .t mark gravity promptEnd right |
| 184 | .t delete "promptEnd linestart" promptEnd |
| 185 | .t insert promptEnd "$appName: " |
| 186 | .t tag add bold "promptEnd linestart" promptEnd |
| 187 | .t mark gravity promptEnd left |
| 188 | } |
| 189 | return {} |
| 190 | } |
| 191 | |
| 192 | # The procedure below will fill in the applications sub-menu with a list |
| 193 | # of all the applications that currently exist. |
| 194 | |
| 195 | proc fillAppsMenu {} { |
| 196 | set m .menu.file.apps |
| 197 | catch {$m delete 0 last} |
| 198 | foreach i [lsort [winfo interps]] { |
| 199 | $m add command -label $i -command [list newApp $i] |
| 200 | } |
| 201 | $m add command -label local -command {newApp local} |
| 202 | } |
| 203 | |
| 204 | set app [winfo name .] |
| 205 | prompt |
| 206 | focus .t |
| 207 | |
| 208 | # Local Variables: |
| 209 | # mode: tcl |
| 210 | # End: |