1 | #!/bin/sh |
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2 | # the next line restarts using wish \ |
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3 | exec wish8.4 "$0" "$@" |
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4 | |
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5 | # rmt -- |
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6 | # This script implements a simple remote-control mechanism for |
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7 | # Tk applications. It allows you to select an application and |
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8 | # then type commands to that application. |
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9 | # |
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10 | # RCS: @(#) $Id: rmt,v 1.3 2001/10/29 16:23:32 dkf Exp $ |
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11 | |
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12 | wm title . "Tk Remote Controller" |
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13 | wm iconname . "Tk Remote" |
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14 | wm minsize . 1 1 |
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15 | |
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16 | # The global variable below keeps track of the remote application |
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17 | # that we're sending to. If it's an empty string then we execute |
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18 | # the commands locally. |
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19 | |
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20 | set app "local" |
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21 | |
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22 | # The global variable below keeps track of whether we're in the |
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23 | # middle of executing a command entered via the text. |
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24 | |
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25 | set executing 0 |
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26 | |
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27 | # The global variable below keeps track of the last command executed, |
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28 | # so it can be re-executed in response to !! commands. |
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29 | |
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30 | set lastCommand "" |
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31 | |
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32 | # Create menu bar. Arrange to recreate all the information in the |
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33 | # applications sub-menu whenever it is cascaded to. |
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34 | |
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35 | . configure -menu [menu .menu] |
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36 | menu .menu.file |
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37 | menu .menu.file.apps -postcommand fillAppsMenu |
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38 | .menu add cascade -label "File" -underline 0 -menu .menu.file |
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39 | .menu.file add cascade -label "Select Application" -underline 0 \ |
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40 | -menu .menu.file.apps |
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41 | .menu.file add command -label "Quit" -command "destroy ." -underline 0 |
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42 | |
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43 | # Create text window and scrollbar. |
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44 | |
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45 | text .t -relief sunken -bd 2 -yscrollcommand ".s set" -setgrid true |
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46 | scrollbar .s -command ".t yview" |
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47 | grid .t .s -sticky nsew |
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48 | grid rowconfigure . 0 -weight 1 |
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49 | grid columnconfigure . 0 -weight 1 |
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50 | |
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51 | # Create a binding to forward commands to the target application, |
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52 | # plus modify many of the built-in bindings so that only information |
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53 | # in the current command can be deleted (can still set the cursor |
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54 | # earlier in the text and select and insert; just can't delete). |
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55 | |
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56 | bindtags .t {.t Text . all} |
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57 | bind .t <Return> { |
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58 | .t mark set insert {end - 1c} |
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59 | .t insert insert \n |
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60 | invoke |
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61 | break |
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62 | } |
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63 | bind .t <Delete> { |
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64 | catch {.t tag remove sel sel.first promptEnd} |
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65 | if {[.t tag nextrange sel 1.0 end] == ""} { |
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66 | if [.t compare insert < promptEnd] { |
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67 | break |
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68 | } |
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69 | } |
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70 | } |
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71 | bind .t <BackSpace> { |
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72 | catch {.t tag remove sel sel.first promptEnd} |
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73 | if {[.t tag nextrange sel 1.0 end] == ""} { |
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74 | if [.t compare insert <= promptEnd] { |
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75 | break |
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76 | } |
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77 | } |
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78 | } |
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79 | bind .t <Control-d> { |
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80 | if [.t compare insert < promptEnd] { |
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81 | break |
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82 | } |
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83 | } |
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84 | bind .t <Control-k> { |
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85 | if [.t compare insert < promptEnd] { |
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86 | .t mark set insert promptEnd |
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87 | } |
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88 | } |
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89 | bind .t <Control-t> { |
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90 | if [.t compare insert < promptEnd] { |
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91 | break |
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92 | } |
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93 | } |
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94 | bind .t <Meta-d> { |
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95 | if [.t compare insert < promptEnd] { |
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96 | break |
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97 | } |
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98 | } |
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99 | bind .t <Meta-BackSpace> { |
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100 | if [.t compare insert <= promptEnd] { |
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101 | break |
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102 | } |
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103 | } |
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104 | bind .t <Control-h> { |
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105 | if [.t compare insert <= promptEnd] { |
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106 | break |
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107 | } |
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108 | } |
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109 | auto_load tkTextInsert |
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110 | proc tkTextInsert {w s} { |
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111 | if {$s == ""} { |
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112 | return |
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113 | } |
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114 | catch { |
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115 | if {[$w compare sel.first <= insert] |
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116 | && [$w compare sel.last >= insert]} { |
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117 | $w tag remove sel sel.first promptEnd |
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118 | $w delete sel.first sel.last |
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119 | } |
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120 | } |
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121 | $w insert insert $s |
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122 | $w see insert |
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123 | } |
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124 | |
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125 | .t configure -font {Courier 12} |
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126 | .t tag configure bold -font {Courier 12 bold} |
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127 | |
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128 | # The procedure below is used to print out a prompt at the |
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129 | # insertion point (which should be at the beginning of a line |
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130 | # right now). |
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131 | |
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132 | proc prompt {} { |
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133 | global app |
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134 | .t insert insert "$app: " |
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135 | .t mark set promptEnd {insert} |
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136 | .t mark gravity promptEnd left |
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137 | .t tag add bold {promptEnd linestart} promptEnd |
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138 | } |
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139 | |
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140 | # The procedure below executes a command (it takes everything on the |
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141 | # current line after the prompt and either sends it to the remote |
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142 | # application or executes it locally, depending on "app". |
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143 | |
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144 | proc invoke {} { |
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145 | global app executing lastCommand |
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146 | set cmd [.t get promptEnd insert] |
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147 | incr executing 1 |
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148 | if [info complete $cmd] { |
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149 | if {$cmd == "!!\n"} { |
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150 | set cmd $lastCommand |
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151 | } else { |
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152 | set lastCommand $cmd |
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153 | } |
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154 | if {$app == "local"} { |
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155 | set result [catch [list uplevel #0 $cmd] msg] |
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156 | } else { |
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157 | set result [catch [list send $app $cmd] msg] |
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158 | } |
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159 | if {$result != 0} { |
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160 | .t insert insert "Error: $msg\n" |
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161 | } else { |
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162 | if {$msg != ""} { |
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163 | .t insert insert $msg\n |
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164 | } |
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165 | } |
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166 | prompt |
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167 | .t mark set promptEnd insert |
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168 | } |
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169 | incr executing -1 |
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170 | .t yview -pickplace insert |
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171 | } |
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172 | |
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173 | # The following procedure is invoked to change the application that |
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174 | # we're talking to. It also updates the prompt for the current |
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175 | # command, unless we're in the middle of executing a command from |
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176 | # the text item (in which case a new prompt is about to be output |
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177 | # so there's no need to change the old one). |
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178 | |
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179 | proc newApp appName { |
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180 | global app executing |
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181 | set app $appName |
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182 | if !$executing { |
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183 | .t mark gravity promptEnd right |
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184 | .t delete "promptEnd linestart" promptEnd |
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185 | .t insert promptEnd "$appName: " |
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186 | .t tag add bold "promptEnd linestart" promptEnd |
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187 | .t mark gravity promptEnd left |
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188 | } |
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189 | return {} |
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190 | } |
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191 | |
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192 | # The procedure below will fill in the applications sub-menu with a list |
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193 | # of all the applications that currently exist. |
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194 | |
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195 | proc fillAppsMenu {} { |
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196 | set m .menu.file.apps |
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197 | catch {$m delete 0 last} |
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198 | foreach i [lsort [winfo interps]] { |
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199 | $m add command -label $i -command [list newApp $i] |
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200 | } |
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201 | $m add command -label local -command {newApp local} |
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202 | } |
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203 | |
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204 | set app [winfo name .] |
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205 | prompt |
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206 | focus .t |
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207 | |
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208 | # Local Variables: |
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209 | # mode: tcl |
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210 | # End: |
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