1 | # -*- mode: tcl; indent-tabs-mode: nil -*- |
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2 | # ---------------------------------------------------------------------- |
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3 | # COMPONENT: loader - widget for loading examples and old runs |
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4 | # |
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5 | # This widget is a glorified combobox that is used to load various |
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6 | # example files into the application. |
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7 | # ====================================================================== |
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8 | # AUTHOR: Michael McLennan, Purdue University |
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9 | # Copyright (c) 2004-2012 HUBzero Foundation, LLC |
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10 | # |
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11 | # See the file "license.terms" for information on usage and |
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12 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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13 | # ====================================================================== |
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14 | package require Itk |
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15 | |
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16 | option add *Loader.textForeground black widgetDefault |
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17 | option add *Loader.textBackground white widgetDefault |
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18 | |
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19 | itcl::class Rappture::Loader { |
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20 | inherit itk::Widget |
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21 | |
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22 | itk_option define -tool tool Tool "" |
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23 | itk_option define -state state State "normal" |
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24 | |
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25 | constructor {owner path args} { # defined below } |
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26 | destructor { # defined below } |
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27 | |
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28 | public method value {args} |
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29 | |
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30 | public method label {} |
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31 | public method tooltip {} |
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32 | |
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33 | protected method _newValue {} |
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34 | protected method _uploadValue {path args} |
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35 | protected method _downloadValues {} |
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36 | protected method _tooltip {} |
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37 | protected method _log {} |
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38 | |
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39 | private method SetDefaultValue { value } |
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40 | |
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41 | private variable _owner "" ;# thing managing this control |
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42 | private variable _path "" ;# path in XML to this loader |
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43 | private variable _lastlabel "";# label of last example loaded |
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44 | |
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45 | private variable _uppath "" ;# list: path label desc ... |
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46 | private variable _dnpaths "" ;# list of download element paths |
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47 | private common _dnpath2state ;# maps download path => yes/no state |
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48 | private variable _copyfrom "" ;# copy xml objects from here in example lib |
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49 | private variable _copyto "" ;# copy xml objects here in example lib |
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50 | private variable _label2file ;# maps combobox labels to filenames |
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51 | } |
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52 | |
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53 | itk::usual Loader { |
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54 | keep -cursor -font |
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55 | keep -foreground -background |
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56 | keep -textforeground -textbackground |
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57 | keep -selectbackground -selectforeground -selectborderwidth |
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58 | } |
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59 | |
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60 | # ---------------------------------------------------------------------- |
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61 | # CONSTRUCTOR |
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62 | # ---------------------------------------------------------------------- |
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63 | itcl::body Rappture::Loader::constructor {owner path args} { |
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64 | if {[catch {$owner isa Rappture::ControlOwner} valid] != 0 || !$valid} { |
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65 | error "bad object \"$owner\": should be Rappture::ControlOwner" |
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66 | } |
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67 | set _owner $owner |
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68 | set _path $path |
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69 | |
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70 | itk_component add combo { |
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71 | Rappture::Combobox $itk_interior.combo -editable no \ |
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72 | -interactcommand [itcl::code $this _log] |
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73 | } { |
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74 | usual |
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75 | keep -width |
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76 | } |
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77 | pack $itk_component(combo) -expand yes -fill both |
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78 | bind $itk_component(combo) <<Value>> [itcl::code $this _newValue] |
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79 | |
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80 | eval itk_initialize $args |
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81 | |
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82 | # example files are stored here |
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83 | if {$itk_option(-tool) != ""} { |
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84 | set fdir [$itk_option(-tool) installdir] |
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85 | } else { |
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86 | set fdir "." |
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87 | } |
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88 | set defval [string trim [$_owner xml get $path.default]] |
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89 | |
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90 | # |
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91 | # If this loader has a <new> section, then create that |
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92 | # entry first. |
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93 | # |
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94 | set newfile "" |
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95 | foreach comp [$_owner xml children -type new $path] { |
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96 | set name [string trim [$_owner xml get $path.$comp]] |
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97 | set fname [file join $fdir examples $name] |
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98 | |
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99 | if {[file exists $fname]} { |
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100 | set newfile $fname |
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101 | |
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102 | if {[catch {set obj [Rappture::library $fname]} result]} { |
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103 | puts stderr "WARNING: can't load example file \"$fname\"" |
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104 | puts stderr " $result" |
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105 | } else { |
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106 | set label "New" |
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107 | $itk_component(combo) choices insert end $obj $label |
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108 | |
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109 | # if this is new, add it to the label->file hash |
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110 | if {![info exists entries($label)]} { |
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111 | set entries($label) $obj |
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112 | set _label2file($label) [file tail $fname] |
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113 | } |
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114 | |
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115 | # translate default file name => default label |
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116 | if {[string equal $defval [file tail $fname]]} { |
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117 | $_owner xml put $path.default "New" |
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118 | } |
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119 | } |
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120 | break |
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121 | } else { |
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122 | puts stderr "WARNING: missing example file \"$fname\"" |
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123 | } |
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124 | } |
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125 | |
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126 | # |
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127 | # If this loader has an <upload> section, then create that |
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128 | # entry next. |
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129 | # |
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130 | foreach comp [$_owner xml children -type upload $path] { |
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131 | foreach tcomp [$_owner xml children -type to $path.$comp] { |
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132 | set topath [string trim [$_owner xml get $path.$comp.$tcomp]] |
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133 | if { [$_owner xml element -as id $topath] == "" } { |
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134 | puts stderr \ |
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135 | "unknown <upload> path \"$topath\": please fix tool.xml" |
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136 | continue |
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137 | } |
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138 | set label [string trim [$_owner xml get $topath.about.label]] |
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139 | set desc [string trim [$_owner xml get $topath.about.description]] |
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140 | lappend _uppath $topath $label $desc |
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141 | } |
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142 | break |
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143 | } |
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144 | if {[llength $_uppath] > 0} { |
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145 | $itk_component(combo) choices insert end \ |
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146 | @upload [Rappture::filexfer::label upload] |
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147 | } |
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148 | |
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149 | # |
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150 | # If this loader has a <download> section, then create that |
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151 | # entry next. Build a popup for choices if there is more than |
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152 | # one download element. |
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153 | # |
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154 | Rappture::Balloon $itk_component(hull).download \ |
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155 | -title "Choose what to [string tolower [Rappture::filexfer::label downloadWord]]:" |
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156 | set inner [$itk_component(hull).download component inner] |
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157 | |
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158 | set i 0 |
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159 | foreach comp [$_owner xml children -type download $path] { |
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160 | foreach dcomp [$_owner xml children -type from $path.$comp] { |
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161 | set frompath [string trim [$_owner xml get $path.$comp.$dcomp]] |
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162 | if {"" != $frompath} { |
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163 | lappend _dnpaths $frompath |
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164 | set _dnpath2state($this-$frompath) [expr {$i == 0}] |
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165 | |
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166 | set label [string trim [$_owner xml get $frompath.about.label]] |
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167 | checkbutton $inner.cb$i -text $label \ |
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168 | -variable ::Rappture::Loader::_dnpath2state($this-$frompath) |
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169 | pack $inner.cb$i -anchor w |
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170 | incr i |
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171 | } |
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172 | } |
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173 | } |
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174 | button $inner.go -text [Rappture::filexfer::label download] \ |
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175 | -command [itcl::code $this _downloadValues] |
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176 | pack $inner.go -side bottom -padx 50 -pady {4 2} |
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177 | |
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178 | if {[llength $_dnpaths] > 0} { |
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179 | $itk_component(combo) choices insert end \ |
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180 | @download [Rappture::filexfer::label download] |
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181 | } |
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182 | |
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183 | if {[$itk_component(combo) choices size] > 0} { |
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184 | $itk_component(combo) choices insert end "---" "---" |
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185 | } |
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186 | |
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187 | # |
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188 | # Scan through and extract example objects, and load them into |
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189 | # the combobox. |
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190 | # |
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191 | set flist "" |
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192 | foreach comp [$_owner xml children -type example $path] { |
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193 | lappend flist [string trim [$_owner xml get $path.$comp]] |
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194 | } |
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195 | |
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196 | # if there are no examples, then look for *.xml |
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197 | if {[llength $flist] == 0} { |
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198 | set flist *.xml |
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199 | } |
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200 | |
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201 | catch {unset entries} |
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202 | set _counter 0 |
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203 | foreach ftail $flist { |
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204 | set fpath [file join $fdir examples $ftail] |
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205 | |
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206 | foreach fname [glob -nocomplain $fpath] { |
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207 | if {[string equal $fname $newfile]} { |
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208 | continue |
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209 | } |
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210 | if {[file exists $fname]} { |
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211 | if {[catch {set obj [Rappture::library $fname]} result]} { |
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212 | puts stderr "WARNING: can't load example file \"$fname\"" |
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213 | puts stderr " $result" |
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214 | } else { |
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215 | set label [$obj get about.label] |
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216 | if {$label == ""} { |
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217 | set label "Example #[incr _counter]" |
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218 | } |
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219 | |
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220 | # if this is new, add it to the label->file hash |
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221 | if {![info exists entries($label)]} { |
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222 | set entries($label) $obj |
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223 | set _label2file($label) [file tail $fname] |
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224 | } |
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225 | |
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226 | # translate default file name => default label |
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227 | if {[string equal $defval [file tail $fname]]} { |
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228 | $_owner xml put $path.default $label |
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229 | } |
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230 | } |
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231 | } else { |
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232 | puts stderr "WARNING: missing example file \"$fname\"" |
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233 | } |
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234 | } |
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235 | } |
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236 | foreach label [lsort -dictionary [array names entries]] { |
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237 | $itk_component(combo) choices insert end $entries($label) $label |
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238 | } |
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239 | |
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240 | set _copyfrom [string trim [$_owner xml get $path.copy.from]] |
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241 | set _copyto [string trim [$_owner xml get $path.copy.to]] |
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242 | |
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243 | # |
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244 | # Assign the default value to this widget, if there is one. |
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245 | # |
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246 | set str [string trim [$_owner xml get $path.default]] |
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247 | if { $str != "" } { |
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248 | bind $itk_component(hull) <Map> [itcl::code $this SetDefaultValue $str] |
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249 | } |
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250 | } |
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251 | |
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252 | # ---------------------------------------------------------------------- |
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253 | # DESTRUCTOR |
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254 | # ---------------------------------------------------------------------- |
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255 | itcl::body Rappture::Loader::destructor {} { |
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256 | # be sure to clean up entries for this widget's download paths |
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257 | foreach path $_dnpaths { |
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258 | catch {unset _dnpath2state($this-$path)} |
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259 | } |
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260 | } |
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261 | |
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262 | # ---------------------------------------------------------------------- |
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263 | # USAGE: value ?-check? ?<newval>? |
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264 | # |
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265 | # Clients use this to query/set the value for this widget. With |
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266 | # no args, it returns the current value for the widget. If the |
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267 | # <newval> is specified, it sets the value of the widget and |
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268 | # sends a <<Value>> event. If the -check flag is included, the |
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269 | # new value is not actually applied, but just checked for correctness. |
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270 | # ---------------------------------------------------------------------- |
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271 | itcl::body Rappture::Loader::value {args} { |
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272 | set onlycheck 0 |
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273 | set i [lsearch -exact $args -check] |
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274 | if {$i >= 0} { |
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275 | set onlycheck 1 |
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276 | set args [lreplace $args $i $i] |
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277 | } |
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278 | |
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279 | if {[llength $args] == 1} { |
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280 | if {$onlycheck} { |
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281 | # someday we may add validation... |
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282 | return |
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283 | } |
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284 | set newval [lindex $args 0] |
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285 | $itk_component(combo) value $newval |
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286 | return $newval |
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287 | |
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288 | } elseif {[llength $args] != 0} { |
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289 | error "wrong # args: should be \"value ?-check? ?newval?\"" |
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290 | } |
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291 | |
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292 | # |
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293 | # Query the value and return. |
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294 | # |
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295 | return [$itk_component(combo) value] |
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296 | } |
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297 | |
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298 | # ---------------------------------------------------------------------- |
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299 | # USAGE: label |
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300 | # |
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301 | # Clients use this to query the label associated with this widget. |
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302 | # Reaches into the XML and pulls out the appropriate label string. |
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303 | # ---------------------------------------------------------------------- |
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304 | itcl::body Rappture::Loader::label {} { |
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305 | set label [string trim [$_owner xml get $_path.about.label]] |
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306 | if {"" == $label} { |
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307 | set label "Example" |
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308 | } |
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309 | return $label |
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310 | } |
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311 | |
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312 | # ---------------------------------------------------------------------- |
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313 | # USAGE: tooltip |
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314 | # |
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315 | # Clients use this to query the tooltip associated with this widget. |
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316 | # Reaches into the XML and pulls out the appropriate description |
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317 | # string. Returns the string that should be used with the |
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318 | # Rappture::Tooltip facility. |
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319 | # ---------------------------------------------------------------------- |
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320 | itcl::body Rappture::Loader::tooltip {} { |
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321 | # query tooltip on-demand based on current choice |
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322 | return "@[itcl::code $this _tooltip]" |
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323 | } |
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324 | |
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325 | # |
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326 | # SetDefaultValue -- |
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327 | # |
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328 | # Sets the designated default value for the loader. This must be done |
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329 | # after the entire application is assembled, otherwise the default |
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330 | # values set up by the loader will be overwritten by the various widgets |
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331 | # themselves when they try to set their default values. |
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332 | # |
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333 | # This is called from a <Map> event to the loader (combobox). This |
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334 | # will get trigger the first time the loader is displayed. The binding |
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335 | # is then removed. |
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336 | # |
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337 | itcl::body Rappture::Loader::SetDefaultValue { value } { |
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338 | after idle [itcl::code $this value $value] |
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339 | # We're done. Remove the binding. |
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340 | bind $itk_component(hull) <Map> {} |
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341 | } |
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342 | |
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343 | # ---------------------------------------------------------------------- |
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344 | # USAGE: _newValue |
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345 | # |
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346 | # Invoked automatically whenever the value in the combobox changes. |
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347 | # Tries to load the selected example into the tool's data structure. |
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348 | # Sends a <<Value>> event to notify clients of the change. |
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349 | # ---------------------------------------------------------------------- |
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350 | itcl::body Rappture::Loader::_newValue {} { |
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351 | set newval [$itk_component(combo) value] |
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352 | set obj [$itk_component(combo) translate $newval] |
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353 | if {$obj == "@upload"} { |
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354 | set tool [Rappture::Tool::resources -appname] |
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355 | Rappture::filexfer::upload \ |
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356 | $tool $_uppath [itcl::code $this _uploadValue] |
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357 | |
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358 | # put the combobox back to its last value |
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359 | $itk_component(combo) component entry configure -state normal |
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360 | $itk_component(combo) component entry delete 0 end |
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361 | $itk_component(combo) component entry insert end $_lastlabel |
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362 | $itk_component(combo) component entry configure -state disabled |
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363 | |
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364 | } elseif {$obj == "@download"} { |
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365 | if {[llength $_dnpaths] == 1} { |
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366 | _downloadValues |
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367 | } else { |
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368 | $itk_component(hull).download activate $itk_component(combo) below |
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369 | } |
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370 | |
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371 | # put the combobox back to its last value |
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372 | $itk_component(combo) component entry configure -state normal |
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373 | $itk_component(combo) component entry delete 0 end |
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374 | $itk_component(combo) component entry insert end $_lastlabel |
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375 | $itk_component(combo) component entry configure -state disabled |
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376 | |
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377 | } elseif {$obj == "---"} { |
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378 | # put the combobox back to its last value |
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379 | $itk_component(combo) component entry configure -state normal |
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380 | $itk_component(combo) component entry delete 0 end |
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381 | $itk_component(combo) component entry insert end $_lastlabel |
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382 | $itk_component(combo) component entry configure -state disabled |
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383 | } elseif {$obj != "" && $itk_option(-tool) != ""} { |
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384 | if {("" != $_copyfrom) && ("" != $_copyto)} { |
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385 | $obj copy $_copyto from $_copyfrom |
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386 | } |
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387 | $_owner xml put $_path.file $_label2file($newval) |
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388 | $itk_option(-tool) load $obj |
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389 | set _lastlabel $newval |
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390 | } |
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391 | |
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392 | event generate $itk_component(hull) <<Value>> |
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393 | } |
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394 | |
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395 | # ---------------------------------------------------------------------- |
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396 | # USAGE: _tooltip |
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397 | # |
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398 | # Returns the tooltip for this widget, given the current choice in |
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399 | # the selector. This is normally called by the Rappture::Tooltip |
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400 | # facility whenever it is about to pop up a tooltip for this widget. |
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401 | # ---------------------------------------------------------------------- |
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402 | itcl::body Rappture::Loader::_tooltip {} { |
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403 | set str [string trim [$_owner xml get $_path.about.description]] |
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404 | |
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405 | # get the description for the current choice, if there is one |
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406 | set newval [$itk_component(combo) value] |
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407 | set obj [$itk_component(combo) translate $newval] |
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408 | if {$obj != ""} { |
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409 | if {$obj == "@upload"} { |
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410 | append str "\n\nUse this option to upload data from your desktop." |
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411 | } else { |
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412 | set label [$obj get about.label] |
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413 | if {[string length $label] > 0} { |
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414 | append str "\n\n$label" |
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415 | } |
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416 | |
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417 | set desc [$obj get about.description] |
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418 | if {[string length $desc] > 0} { |
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419 | if {[string length $label] > 0} { |
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420 | append str ":\n" |
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421 | } else { |
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422 | append str "\n\n" |
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423 | } |
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424 | append str $desc |
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425 | } |
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426 | } |
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427 | } |
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428 | return [string trim $str] |
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429 | } |
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430 | |
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431 | # ---------------------------------------------------------------------- |
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432 | # USAGE: _log |
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433 | # |
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434 | # Used internally to send info to the logging mechanism. Calls the |
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435 | # Rappture::Logger mechanism to log the change to this input. |
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436 | # ---------------------------------------------------------------------- |
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437 | itcl::body Rappture::Loader::_log {} { |
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438 | Rappture::Logger::log input $_path [$itk_component(combo) value] |
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439 | } |
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440 | |
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441 | # ---------------------------------------------------------------------- |
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442 | # USAGE: _uploadValue ?<key> <value> <key> <value> ...? |
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443 | # |
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444 | # Invoked automatically whenever the user has uploaded data from |
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445 | # the "Upload..." option. Takes the data value (passed as an |
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446 | # argument) and loads into the destination widget. |
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447 | # ---------------------------------------------------------------------- |
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448 | itcl::body Rappture::Loader::_uploadValue {args} { |
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449 | array set data $args |
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450 | |
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451 | if {[info exists data(error)]} { |
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452 | Rappture::Tooltip::cue $itk_component(combo) $data(error) |
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453 | } |
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454 | |
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455 | if {[info exists data(path)] && [info exists data(data)]} { |
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456 | Rappture::Tooltip::cue hide ;# take down note about the popup window |
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457 | $itk_option(-tool) valuefor $data(path) $data(data) |
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458 | |
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459 | $itk_component(combo) component entry configure -state normal |
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460 | $itk_component(combo) component entry delete 0 end |
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461 | $itk_component(combo) component entry insert end "Uploaded data" |
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462 | $itk_component(combo) component entry configure -state disabled |
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463 | set _lastlabel "Uploaded data" |
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464 | } |
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465 | } |
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466 | |
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467 | # ---------------------------------------------------------------------- |
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468 | # USAGE: _downloadValues |
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469 | # |
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470 | # Used internally to download all values checked by the popup that |
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471 | # controls downloading. Sends the values for the various controls |
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472 | # out to the user by popping up separate browser windows. |
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473 | # ---------------------------------------------------------------------- |
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474 | itcl::body Rappture::Loader::_downloadValues {} { |
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475 | # take down the popup (in case it was posted) |
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476 | $itk_component(hull).download deactivate |
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477 | |
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478 | set mesg "" |
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479 | foreach path $_dnpaths { |
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480 | if {$_dnpath2state($this-$path)} { |
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481 | set info [$itk_option(-tool) valuefor $path] |
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482 | set mesg [Rappture::filexfer::download $info input.txt] |
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483 | if {"" != $mesg} { break } |
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484 | } |
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485 | } |
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486 | |
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487 | if {"" != $mesg} { |
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488 | Rappture::Tooltip::cue $itk_component(combo) $mesg |
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489 | } |
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490 | } |
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491 | |
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492 | # ---------------------------------------------------------------------- |
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493 | # OPTION: -tool |
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494 | # ---------------------------------------------------------------------- |
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495 | itcl::configbody Rappture::Loader::tool { |
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496 | if {[catch {$itk_option(-tool) isa Rappture::Tool} valid] || !$valid} { |
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497 | error "object \"$itk_option(-tool)\" is not a Rappture Tool" |
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498 | } |
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499 | } |
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500 | |
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501 | # ---------------------------------------------------------------------- |
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502 | # CONFIGURATION OPTION: -state |
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503 | # ---------------------------------------------------------------------- |
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504 | itcl::configbody Rappture::Loader::state { |
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505 | set valid {normal disabled} |
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506 | if {[lsearch -exact $valid $itk_option(-state)] < 0} { |
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507 | error "bad value \"$itk_option(-state)\": should be [join $valid {, }]" |
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508 | } |
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509 | $itk_component(combo) configure -state $itk_option(-state) |
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510 | } |
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