1 | # ---------------------------------------------------------------------- |
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2 | # COMPONENT: textentry - general-purpose text entry widget |
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3 | # |
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4 | # This widget is a cross between the Tk entry and text widgets. For |
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5 | # one-line messages, it acts like an entry widget. For larger |
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6 | # messages, it morphs into a text widget. |
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7 | # ====================================================================== |
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8 | # AUTHOR: Michael McLennan, Purdue University |
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9 | # Copyright (c) 2004-2005 Purdue Research Foundation |
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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 *TextEntry.size auto widgetDefault |
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17 | option add *TextEntry.width 0 widgetDefault |
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18 | option add *TextEntry.height 0 widgetDefault |
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19 | option add *TextEntry.textBackground white widgetDefault |
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20 | option add *TextEntry*disabledForeground #a3a3a3 widgetDefault |
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21 | option add *TextEntry*disabledBackground white widgetDefault |
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22 | |
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23 | option add *TextEntry.hintForeground gray50 widgetDefault |
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24 | option add *TextEntry.hintFont \ |
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25 | -*-helvetica-medium-r-normal-*-10-* widgetDefault |
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26 | option add *TextEntry.codeFont \ |
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27 | -*-courier-medium-r-normal-*-12-* widgetDefault |
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28 | |
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29 | |
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30 | itcl::class Rappture::TextEntry { |
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31 | inherit itk::Widget |
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32 | |
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33 | itk_option define -state state State "normal" |
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34 | itk_option define -disabledforeground disabledForeground DisabledForeground "" |
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35 | itk_option define -disabledbackground disabledBackground DisabledBackground "" |
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36 | itk_option define -width width Width 0 |
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37 | itk_option define -height height Height 0 |
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38 | |
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39 | constructor {owner path args} { # defined below } |
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40 | |
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41 | public method value {args} |
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42 | |
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43 | public method label {} |
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44 | public method tooltip {} |
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45 | public method size {} { return $_size } |
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46 | |
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47 | protected method _layout {} |
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48 | protected method _setValue {value} |
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49 | protected method _newValue {} |
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50 | protected method _edit {option args} |
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51 | protected method _uploadValue {args} |
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52 | protected method _downloadValue {} |
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53 | |
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54 | private variable _dispatcher "" ;# dispatcher for !events |
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55 | private variable _owner "" ;# thing managing this control |
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56 | private variable _path "" ;# path in XML to this number |
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57 | |
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58 | private variable _layout "" ;# entry or full text size |
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59 | private variable _value "" ;# value inside the widget |
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60 | private variable _size "" ;# size hint from XML |
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61 | private variable _icon "" ;# size hint from XML |
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62 | } |
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63 | |
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64 | itk::usual TextEntry { |
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65 | keep -foreground -background -textbackground -font -cursor |
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66 | } |
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67 | |
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68 | # ---------------------------------------------------------------------- |
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69 | # CONSTRUCTOR |
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70 | # ---------------------------------------------------------------------- |
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71 | itcl::body Rappture::TextEntry::constructor {owner path args} { |
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72 | if {[catch {$owner isa Rappture::ControlOwner} valid] != 0 || !$valid} { |
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73 | error "bad object \"$owner\": should be Rappture::ControlOwner" |
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74 | } |
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75 | set _owner $owner |
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76 | set _path $path |
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77 | |
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78 | Rappture::dispatcher _dispatcher |
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79 | $_dispatcher register !layout |
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80 | $_dispatcher dispatch $this !layout "[itcl::code $this _layout]; list" |
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81 | |
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82 | set _size [$_owner xml get $path.size] |
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83 | |
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84 | set hints [$_owner xml get $path.about.hints] |
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85 | set icon [$_owner xml get $path.about.icon] |
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86 | if {[string length $icon] > 0} { |
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87 | set _icon [image create photo -data $icon] |
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88 | } |
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89 | if {[string length $hints] > 0} { |
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90 | itk_component add hints { |
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91 | ::label $itk_interior.hints -anchor w -text $hints |
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92 | } { |
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93 | usual |
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94 | rename -foreground -hintforeground hintForeground Foreground |
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95 | rename -font -hintfont hintFont Font |
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96 | } |
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97 | pack $itk_component(hints) -side bottom -fill x |
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98 | } |
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99 | |
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100 | eval itk_initialize $args |
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101 | |
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102 | set str [$_owner xml get $path.default] |
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103 | if {"" != $str} { |
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104 | value $str |
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105 | } |
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106 | } |
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107 | |
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108 | # ---------------------------------------------------------------------- |
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109 | # USAGE: value ?-check? ?<newval>? |
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110 | # |
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111 | # Clients use this to query/set the value for this widget. With |
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112 | # no args, it returns the current value for the widget. If the |
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113 | # <newval> is specified, it sets the value of the widget and |
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114 | # sends a <<Value>> event. If the -check flag is included, the |
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115 | # new value is not actually applied, but just checked for correctness. |
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116 | # ---------------------------------------------------------------------- |
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117 | itcl::body Rappture::TextEntry::value {args} { |
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118 | set onlycheck 0 |
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119 | set i [lsearch -exact $args -check] |
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120 | if {$i >= 0} { |
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121 | set onlycheck 1 |
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122 | set args [lreplace $args $i $i] |
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123 | } |
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124 | |
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125 | if {[llength $args] == 1} { |
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126 | if {$onlycheck} { |
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127 | # someday we may add validation... |
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128 | return |
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129 | } |
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130 | set newval [lindex $args 0] |
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131 | _setValue $newval |
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132 | _newValue |
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133 | |
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134 | } elseif {[llength $args] != 0} { |
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135 | error "wrong # args: should be \"value ?-check? ?newval?\"" |
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136 | } |
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137 | |
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138 | # |
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139 | # Query the value and return. |
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140 | # |
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141 | switch -- $_layout { |
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142 | entry { |
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143 | return [$itk_component(entry) get] |
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144 | } |
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145 | text { |
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146 | return [$itk_component(text) get 1.0 end-1char] |
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147 | } |
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148 | binary { |
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149 | return $_value |
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150 | } |
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151 | } |
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152 | return "" |
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153 | } |
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154 | |
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155 | # ---------------------------------------------------------------------- |
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156 | # USAGE: label |
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157 | # |
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158 | # Clients use this to query the label associated with this widget. |
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159 | # Reaches into the XML and pulls out the appropriate label string. |
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160 | # ---------------------------------------------------------------------- |
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161 | itcl::body Rappture::TextEntry::label {} { |
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162 | set label [$_owner xml get $_path.about.label] |
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163 | if {"" == $label} { |
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164 | set label "String" |
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165 | } |
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166 | return $label |
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167 | } |
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168 | |
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169 | # ---------------------------------------------------------------------- |
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170 | # USAGE: tooltip |
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171 | # |
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172 | # Clients use this to query the tooltip associated with this widget. |
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173 | # Reaches into the XML and pulls out the appropriate description |
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174 | # string. Returns the string that should be used with the |
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175 | # Rappture::Tooltip facility. |
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176 | # ---------------------------------------------------------------------- |
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177 | itcl::body Rappture::TextEntry::tooltip {} { |
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178 | set str [$_owner xml get $_path.about.description] |
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179 | return [string trim $str] |
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180 | } |
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181 | |
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182 | # ---------------------------------------------------------------------- |
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183 | # USAGE: _layout |
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184 | # |
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185 | # Used internally to change the layout of this widget depending |
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186 | # on the .size hint and its contents. Switches between an entry |
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187 | # and a text widget. |
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188 | # ---------------------------------------------------------------------- |
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189 | itcl::body Rappture::TextEntry::_layout {} { |
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190 | set size $_size |
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191 | if {$size == "" || $size == "auto"} { |
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192 | # |
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193 | # If the size is "auto", then look at the current value |
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194 | # and count its lines/characters. |
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195 | # |
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196 | if {[string length $_value] > 1920} { |
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197 | # if size is really big, don't bother counting lines |
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198 | set size "80x24" |
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199 | } else { |
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200 | set chars 0 |
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201 | set lines 0 |
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202 | foreach line [split $_value \n] { |
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203 | incr lines |
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204 | if {[string length $line] > $chars} { |
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205 | set chars [string length $line] |
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206 | } |
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207 | } |
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208 | incr chars |
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209 | |
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210 | if {$lines > 1} { |
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211 | set size "${chars}x${lines}" |
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212 | } else { |
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213 | set size $chars |
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214 | } |
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215 | } |
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216 | } |
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217 | |
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218 | if {$size == "binary" || [Rappture::encoding::is binary $_value]} { |
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219 | set newlayout "binary" |
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220 | } elseif {[regexp {^[0-9]+$} $size]} { |
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221 | set newlayout "entry" |
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222 | } elseif {[regexp {^([0-9]+)x([0-9]+)$} $size match w h]} { |
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223 | set newlayout "text" |
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224 | } |
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225 | |
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226 | if {$newlayout != $_layout} { |
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227 | set oldval "" |
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228 | if {$_layout == "entry"} { |
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229 | set oldval [$itk_component(entry) get] |
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230 | } elseif {$_layout == "text"} { |
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231 | set oldval [$itk_component(text) get 1.0 end-1char] |
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232 | } |
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233 | |
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234 | # take down any existing widget |
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235 | foreach win [pack slaves $itk_interior] { |
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236 | if { [winfo name $win] != "hints" } { |
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237 | pack forget $win |
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238 | } |
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239 | } |
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240 | |
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241 | switch -- $newlayout { |
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242 | entry { |
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243 | # don't have the entry widget yet? then create it |
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244 | if {![winfo exists $itk_interior.entry]} { |
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245 | itk_component add entry { |
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246 | entry $itk_interior.entry |
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247 | } { |
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248 | usual |
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249 | rename -background -textbackground textBackground Background |
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250 | rename -foreground -textforeground textForeground Foreground |
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251 | } |
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252 | $itk_component(entry) configure \ |
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253 | -background $itk_option(-textbackground) \ |
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254 | -foreground $itk_option(-textforeground) |
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255 | |
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256 | bind $itk_component(entry) <KeyPress> \ |
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257 | [itcl::code $this _newValue] |
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258 | bind $itk_component(entry) <Control-KeyPress-a> \ |
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259 | "[list $itk_component(entry) selection range 0 end]; break" |
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260 | |
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261 | itk_component add emenu { |
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262 | menu $itk_component(entry).menu -tearoff 0 |
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263 | } |
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264 | $itk_component(emenu) add command \ |
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265 | -label "Cut" -accelerator "^X" \ |
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266 | -command [list event generate $itk_component(entry) <<Cut>>] |
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267 | $itk_component(emenu) add command \ |
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268 | -label "Copy" -accelerator "^C" \ |
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269 | -command [list event generate $itk_component(entry) <<Copy>>] |
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270 | $itk_component(emenu) add command \ |
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271 | -label "Paste" -accelerator "^V" \ |
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272 | -command [list event generate $itk_component(entry) <<Paste>>] |
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273 | $itk_component(emenu) add command \ |
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274 | -label "Select All" -accelerator "^A" \ |
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275 | -command [list $itk_component(entry) selection range 0 end] |
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276 | bind $itk_component(entry) <<PopupMenu>> \ |
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277 | [itcl::code $this _edit menu emenu %X %Y] |
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278 | } |
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279 | |
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280 | # show the entry widget |
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281 | pack $itk_component(entry) -expand yes -fill both |
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282 | |
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283 | # load any previous value |
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284 | regsub -all "\n" $oldval "" oldval |
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285 | $itk_component(entry) delete 0 end |
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286 | $itk_component(entry) insert end $oldval |
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287 | } |
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288 | |
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289 | text { |
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290 | if {![winfo exists $itk_interior.scrl]} { |
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291 | itk_component add scrollbars { |
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292 | Rappture::Scroller $itk_interior.scrl \ |
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293 | -xscrollmode auto -yscrollmode auto |
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294 | } |
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295 | |
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296 | itk_component add text { |
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297 | text $itk_component(scrollbars).text \ |
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298 | -width 1 -height 1 -wrap char |
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299 | } { |
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300 | usual |
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301 | rename -background -textbackground textBackground Background |
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302 | rename -foreground -textforeground textForeground Foreground |
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303 | rename -font -codefont codeFont CodeFont |
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304 | } |
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305 | $itk_component(text) configure \ |
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306 | -background $itk_option(-textbackground) \ |
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307 | -foreground $itk_option(-textforeground) \ |
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308 | -font $itk_option(-codefont) |
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309 | $itk_component(scrollbars) contents $itk_component(text) |
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310 | |
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311 | bind $itk_component(text) <KeyPress> \ |
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312 | [itcl::code $this _newValue] |
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313 | bind $itk_component(text) <Control-KeyPress-a> \ |
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314 | "[list $itk_component(text) tag add sel 1.0 end]; break" |
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315 | |
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316 | itk_component add tmenu { |
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317 | menu $itk_component(text).menu -tearoff 0 |
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318 | } |
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319 | $itk_component(tmenu) add command \ |
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320 | -label "Cut" -accelerator "^X" \ |
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321 | -command [list event generate $itk_component(text) <<Cut>>] |
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322 | $itk_component(tmenu) add command \ |
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323 | -label "Copy" -accelerator "^C" \ |
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324 | -command [list event generate $itk_component(text) <<Copy>>] |
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325 | $itk_component(tmenu) add command \ |
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326 | -label "Paste" -accelerator "^V" \ |
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327 | -command [list event generate $itk_component(text) <<Paste>>] |
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328 | $itk_component(tmenu) add command \ |
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329 | -label "Select All" -accelerator "^A" \ |
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330 | -command [list $itk_component(text) tag add sel 1.0 end] |
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331 | $itk_component(tmenu) add separator |
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332 | |
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333 | $itk_component(tmenu) add command \ |
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334 | -label [Rappture::filexfer::label upload] \ |
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335 | -command [itcl::code $this _uploadValue -start] |
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336 | $itk_component(tmenu) add command \ |
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337 | -label [Rappture::filexfer::label download] \ |
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338 | -command [itcl::code $this _downloadValue] |
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339 | |
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340 | bind $itk_component(text) <<PopupMenu>> \ |
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341 | [itcl::code $this _edit menu tmenu %X %Y] |
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342 | } |
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343 | |
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344 | # show the text editor widget |
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345 | pack $itk_component(scrollbars) -expand yes -fill both |
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346 | $itk_component(text) configure -width $w -height $h |
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347 | |
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348 | # load any previous value |
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349 | $itk_component(text) delete 1.0 end |
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350 | $itk_component(text) insert end $oldval |
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351 | } |
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352 | |
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353 | binary { |
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354 | if {![winfo exists $itk_interior.bin]} { |
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355 | itk_component add binary { |
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356 | frame $itk_interior.bin |
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357 | } |
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358 | set icon $_icon |
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359 | if { $icon == "" } { |
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360 | set icon [Rappture::icon binary] |
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361 | } |
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362 | itk_component add binicon { |
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363 | ::label $itk_component(binary).binicon \ |
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364 | -image $icon -borderwidth 0 |
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365 | } |
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366 | pack $itk_component(binicon) -side left |
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367 | |
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368 | itk_component add bininfo { |
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369 | ::label $itk_component(binary).bininfo \ |
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370 | -text "Empty\n0 bytes" \ |
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371 | -width 5 -justify left -anchor w -borderwidth 0 |
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372 | } |
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373 | pack $itk_component(bininfo) -side left -expand yes -fill x -padx 4 |
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374 | |
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375 | itk_component add bmenu { |
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376 | menu $itk_component(binary).menu -tearoff 0 |
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377 | } |
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378 | $itk_component(bmenu) add command \ |
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379 | -label [Rappture::filexfer::label upload] \ |
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380 | -command [itcl::code $this _uploadValue -start] |
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381 | $itk_component(bmenu) add command \ |
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382 | -label [Rappture::filexfer::label download] \ |
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383 | -command [itcl::code $this _downloadValue] |
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384 | |
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385 | bind $itk_component(binicon) <<PopupMenu>> \ |
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386 | [itcl::code $this _edit menu bmenu %X %Y] |
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387 | bind $itk_component(bininfo) <<PopupMenu>> \ |
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388 | [itcl::code $this _edit menu bmenu %X %Y] |
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389 | } |
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390 | |
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391 | # show the binary mode rep |
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392 | pack $itk_component(binary) -side top -fill x |
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393 | |
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394 | } |
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395 | default { |
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396 | error "don't know how to handle mode \"$newlayout\" for string editor" |
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397 | } |
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398 | } |
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399 | set _layout $newlayout |
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400 | } |
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401 | |
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402 | # |
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403 | # Fix the overall widget size according to -width / -height |
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404 | # |
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405 | if {$itk_option(-width) == 0 && $itk_option(-height) == 0} { |
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406 | pack propagate $itk_component(hull) yes |
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407 | } else { |
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408 | pack propagate $itk_component(hull) no |
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409 | component hull configure \ |
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410 | -width $itk_option(-width) -height $itk_option(-width) |
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411 | } |
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412 | } |
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413 | |
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414 | # ---------------------------------------------------------------------- |
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415 | # USAGE: _setValue <newValue> |
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416 | # |
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417 | # Used internally to set the value for this widget. If the <newValue> |
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418 | # string is ASCII, then it is stored directly and the widget is enabled |
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419 | # for editing. Otherwise, the value is cached and a representation of |
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420 | # the data is displayed. |
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421 | # ---------------------------------------------------------------------- |
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422 | itcl::body Rappture::TextEntry::_setValue {newval} { |
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423 | if {[Rappture::encoding::is binary $newval]} { |
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424 | # looks like a binary file |
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425 | set _value $newval |
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426 | } else { |
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427 | # ascii file -- map carriage returns to line feeds |
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428 | regsub -all "\r\n" $newval "\n" newval |
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429 | regsub -all "\r" $newval "\n" newval |
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430 | set _value $newval |
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431 | } |
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432 | |
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433 | # fix up the layout so the display widgets exist, then load the new value |
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434 | _layout |
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435 | |
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436 | switch -- $_layout { |
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437 | entry { |
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438 | $itk_component(entry) configure -state normal |
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439 | $itk_component(entry) delete 0 end |
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440 | $itk_component(entry) insert end $_value |
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441 | $itk_component(entry) configure -state $itk_option(-state) |
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442 | } |
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443 | text { |
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444 | $itk_component(text) configure -state normal |
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445 | $itk_component(text) delete 1.0 end |
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446 | $itk_component(text) insert end $_value |
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447 | $itk_component(text) configure -state $itk_option(-state) |
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448 | } |
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449 | binary { |
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450 | set desc [Rappture::utils::datatype $_value] |
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451 | append desc "\n[Rappture::utils::binsize [string length $_value]]" |
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452 | $itk_component(bininfo) configure -text $desc |
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453 | } |
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454 | } |
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455 | } |
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456 | |
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457 | # ---------------------------------------------------------------------- |
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458 | # USAGE: _newValue |
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459 | # |
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460 | # Invoked automatically whenever the value in the entry changes. |
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461 | # Sends a <<Value>> event to notify clients of the change. |
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462 | # ---------------------------------------------------------------------- |
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463 | itcl::body Rappture::TextEntry::_newValue {} { |
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464 | event generate $itk_component(hull) <<Value>> |
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465 | } |
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466 | |
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467 | # ---------------------------------------------------------------------- |
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468 | # USAGE: _edit menu <which> <X> <Y> |
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469 | # |
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470 | # Used internally to manage edit operations. |
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471 | # ---------------------------------------------------------------------- |
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472 | itcl::body Rappture::TextEntry::_edit {option args} { |
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473 | if {$itk_option(-state) == "disabled"} { |
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474 | return ;# disabled? then bail out here! |
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475 | } |
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476 | switch -- $option { |
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477 | menu { |
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478 | if {[llength $args] != 3} { |
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479 | error "wrong # args: should be \"_edit $option which x y\"" |
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480 | } |
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481 | set mname [lindex $args 0] |
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482 | set x [lindex $args 1] |
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483 | set y [lindex $args 2] |
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484 | tk_popup $itk_component($mname) $x $y |
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485 | } |
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486 | default { |
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487 | error "bad option \"$option\": should be menu" |
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488 | } |
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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 | # USAGE: _uploadValue -start |
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494 | # USAGE: _uploadValue -assign <key> <value> <key> <value> ... |
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495 | # |
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496 | # Used internally to initiate an upload operation. Prompts the |
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497 | # user to upload into the text area of this widget. |
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498 | # ---------------------------------------------------------------------- |
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499 | itcl::body Rappture::TextEntry::_uploadValue {args} { |
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500 | switch -- $_layout { |
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501 | entry { set widget $itk_component(entry) } |
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502 | text { set widget $itk_component(text) } |
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503 | default { set widget $itk_component(hull) } |
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504 | } |
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505 | |
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506 | set opt [lindex $args 0] |
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507 | switch -- $opt { |
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508 | -start { |
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509 | set tool [Rappture::Tool::resources -appname] |
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510 | set cntls [list $_path [label] [tooltip]] |
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511 | Rappture::filexfer::upload \ |
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512 | $tool $cntls [itcl::code $this _uploadValue -assign] |
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513 | } |
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514 | -assign { |
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515 | array set data [lrange $args 1 end] ;# skip option |
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516 | if {[info exists data(error)]} { |
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517 | Rappture::Tooltip::cue $widget $data(error) |
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518 | } |
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519 | if {[info exists data(data)]} { |
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520 | Rappture::Tooltip::cue hide ;# take down note about the popup |
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521 | _setValue $data(data) |
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522 | _newValue |
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523 | } |
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524 | } |
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525 | default { |
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526 | error "bad option \"$opt\": should be -start or -assign" |
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527 | } |
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528 | } |
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529 | } |
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530 | |
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531 | # ---------------------------------------------------------------------- |
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532 | # USAGE: _downloadValue |
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533 | # |
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534 | # Used internally to initiate a download operation. Takes the current |
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535 | # value and downloads it to the user in a new browser window. |
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536 | # ---------------------------------------------------------------------- |
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537 | itcl::body Rappture::TextEntry::_downloadValue {} { |
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538 | set mesg [Rappture::filexfer::download [value] input.txt] |
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539 | |
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540 | if {"" != $mesg} { |
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541 | switch -- $_layout { |
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542 | entry { set widget $itk_component(entry) } |
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543 | text { set widget $itk_component(text) } |
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544 | default { set widget $itk_component(hull) } |
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545 | } |
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546 | Rappture::Tooltip::cue $widget $mesg |
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547 | } |
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548 | } |
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549 | |
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550 | # ---------------------------------------------------------------------- |
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551 | # CONFIGURATION OPTION: -state |
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552 | # ---------------------------------------------------------------------- |
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553 | itcl::configbody Rappture::TextEntry::state { |
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554 | set valid {normal disabled} |
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555 | if {[lsearch -exact $valid $itk_option(-state)] < 0} { |
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556 | error "bad value \"$itk_option(-state)\": should be [join $valid {, }]" |
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557 | } |
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558 | if {[info exists itk_component(text)]} { |
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559 | $itk_component(text) configure -state $itk_option(-state) |
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560 | $itk_component(tmenu) entryconfigure "Cut" -state $itk_option(-state) |
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561 | $itk_component(tmenu) entryconfigure "Copy" -state $itk_option(-state) |
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562 | $itk_component(tmenu) entryconfigure "Paste" -state $itk_option(-state) |
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563 | if {$itk_option(-state) == "disabled"} { |
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564 | $itk_component(text) configure \ |
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565 | -foreground $itk_option(-disabledforeground) \ |
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566 | -background $itk_option(-disabledbackground) |
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567 | } else { |
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568 | $itk_component(text) configure \ |
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569 | -foreground $itk_option(-foreground) \ |
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570 | -background $itk_option(-textbackground) |
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571 | } |
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572 | } |
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573 | if {[info exists itk_component(entry)]} { |
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574 | $itk_component(entry) configure -state $itk_option(-state) |
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575 | $itk_component(emenu) entryconfigure "Cut" -state $itk_option(-state) |
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576 | $itk_component(emenu) entryconfigure "Copy" -state $itk_option(-state) |
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577 | $itk_component(emenu) entryconfigure "Paste" -state $itk_option(-state) |
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578 | } |
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579 | } |
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580 | |
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581 | # ---------------------------------------------------------------------- |
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582 | # CONFIGURATION OPTION: -width |
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583 | # ---------------------------------------------------------------------- |
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584 | itcl::configbody Rappture::TextEntry::width { |
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585 | # check size to see if it has the proper form |
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586 | winfo pixels $itk_component(hull) $itk_option(-width) |
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587 | $_dispatcher event -idle !layout |
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588 | } |
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589 | |
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590 | # ---------------------------------------------------------------------- |
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591 | # CONFIGURATION OPTION: -height |
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592 | # ---------------------------------------------------------------------- |
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593 | itcl::configbody Rappture::TextEntry::height { |
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594 | # check size to see if it has the proper form |
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595 | winfo pixels $itk_component(hull) $itk_option(-height) |
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596 | $_dispatcher event -idle !layout |
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597 | } |
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598 | |
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599 | |
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