%D \module
%D   [       file=java-fld,
%D        version=1998.05.20,
%D          title=\CONTEXT\ JavaScript Macros,
%D       subtitle=Field Support,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See licen-en.pdf for 
%C details. 

% nu nog alles geladen, moet dus anders

\startJSpreamble {Sanitize_TeX_Input} used later 

  function Sanitized_TeX_String (value)
    { var v = value ;
    % v = v.replace(/\\\\\\/L/g,"\\225") ; % problematic 
    % v = v.replace(  /\\\\OE/g,"\\226") ; % problematic 
    % v = v.replace(  /\\\\vS/g,"\\227") ; % problematic 
    % v = v.replace(  /\\\\"Y/g,"\\230") ; % problematic 
    % v = v.replace(  /\\\\vZ/g,"\\231") ; % problematic 
    % v = v.replace(/\\\\\\/l/g,"\\233") ; % problematic 
      v = v.replace(  /\\\\oe/g,"\\234") ; 
    % v = v.replace(  /\\\\vs/g,"\\235") ; % problematic 
    % v = v.replace(  /\\\\vz/g,"\\236") ; % problematic 
      v = v.replace(  /\\\\<</g,"\\253") ;
      v = v.replace(  /\\\\>>/g,"\\273") ;
      v = v.replace(  /\\\\`A/g,"\\300") ;
      v = v.replace(  /\\\\'A/g,"\\301") ;
      v = v.replace(  /\\\\^A/g,"\\302") ;
      v = v.replace(  /\\\\~A/g,"\\303") ;
      v = v.replace(  /\\\\"A/g,"\\304") ;
      v = v.replace(  /\\\\oA/g,"\\305") ;
      v = v.replace(  /\\\\AE/g,"\\306") ;
      v = v.replace(  /\\\\,C/g,"\\307") ;
      v = v.replace(  /\\\\`E/g,"\\310") ;
      v = v.replace(  /\\\\'E/g,"\\311") ;
      v = v.replace(  /\\\\^E/g,"\\312") ;
      v = v.replace(  /\\\\"E/g,"\\313") ;
      v = v.replace(  /\\\\`I/g,"\\314") ;
      v = v.replace(  /\\\\'I/g,"\\315") ;
      v = v.replace(  /\\\\^I/g,"\\316") ;
      v = v.replace(  /\\\\"I/g,"\\317") ;
      v = v.replace(  /\\\\~N/g,"\\321") ;
      v = v.replace(  /\\\\`O/g,"\\322") ;
      v = v.replace(  /\\\\'O/g,"\\323") ;
      v = v.replace(  /\\\\^O/g,"\\324") ;
      v = v.replace(  /\\\\~O/g,"\\325") ;
      v = v.replace(  /\\\\"O/g,"\\326") ;
    % v = v.replace(/\\\\\\/O/g,"\\330") ; % problematic 
      v = v.replace(  /\\\\`U/g,"\\331") ;
      v = v.replace(  /\\\\'U/g,"\\332") ;
      v = v.replace(  /\\\\^U/g,"\\333") ;
      v = v.replace(  /\\\\"U/g,"\\334") ;
      v = v.replace(  /\\\\'Y/g,"\\335") ;
      v = v.replace(  /\\\\ss/g,"\\337") ;
      v = v.replace(  /\\\\`a/g,"\\340") ;
      v = v.replace(  /\\\\'a/g,"\\341") ;
      v = v.replace(  /\\\\^a/g,"\\342") ;
      v = v.replace(  /\\\\~a/g,"\\343") ;
      v = v.replace(  /\\\\"a/g,"\\344") ;
      v = v.replace(  /\\\\oa/g,"\\345") ;
      v = v.replace(  /\\\\ae/g,"\\346") ;
      v = v.replace(  /\\\\,c/g,"\\347") ;
      v = v.replace(  /\\\\`e/g,"\\350") ;
      v = v.replace(  /\\\\'e/g,"\\351") ;
      v = v.replace(  /\\\\^e/g,"\\352") ;
      v = v.replace(  /\\\\"e/g,"\\353") ;
      v = v.replace(  /\\\\`i/g,"\\354") ;
      v = v.replace(  /\\\\'i/g,"\\355") ;
      v = v.replace(  /\\\\^i/g,"\\356") ;
      v = v.replace(  /\\\\"i/g,"\\357") ;
      v = v.replace(  /\\\\~n/g,"\\361") ;
      v = v.replace(  /\\\\`o/g,"\\362") ;
      v = v.replace(  /\\\\'o/g,"\\363") ;
      v = v.replace(  /\\\\^o/g,"\\364") ;
      v = v.replace(  /\\\\~o/g,"\\365") ;
      v = v.replace(  /\\\\"o/g,"\\366") ;
    % v = v.replace(/\\\\\\/o/g,"\\370") ; % problematic 
      v = v.replace(  /\\\\`u/g,"\\371") ;
      v = v.replace(  /\\\\'u/g,"\\372") ;
      v = v.replace(  /\\\\^u/g,"\\373") ;
      v = v.replace(  /\\\\"u/g,"\\374") ;
      v = v.replace(  /\\\\'y/g,"\\375") ;
      v = v.replace(  /\\\\"y/g,"\\377") ;
      return(v) }

  var TeX_Key_Mode = 0 ; 

  function Initialize_TeX_Keystroke ()
    { TeX_Key_Char = "" ;
      TeX_Key_Mode = 0 }

  function Sanitized_TeX_Keystroke (change)
    { if (change=="\\\\")
        { TeX_Key_Mode = 1 ;
          return("") }
      else if (TeX_Key_Mode==1) 
        { TeX_Key_Mode = 2 ;
          TeX_Key_Char = change ;
          return("") } 
      else if (TeX_Key_Mode==2)
        { TeX_Key_Mode = 0 ;
          TeX_Key_Char = "\\\\"+TeX_Key_Char+change ;
          return(Sanitized_TeX_String(TeX_Key_Char)) } 
      else 
        { TeX_Key_Mode = 0 ;
          return(change) } }    

\stopJSpreamble

\startJScode {Initialize_TeX_Key} uses {Sanitize_TeX_Input}
  Initialize_TeX_Keystroke() ; 
\stopJScode

\startJScode {Convert_TeX_Key} uses {Sanitize_TeX_Input}
  if (!event.willCommit) 
    { event.change = Sanitized_TeX_Keystroke(event.change) }
\stopJScode

\startJScode{Convert_TeX_String} uses {Sanitize_TeX_Input}
  event.value = Sanitized_TeX_String(event.value) ; 
\stopJScode

\startJSpreamble {Do_With_Field} 

var visible_field  = new Array() ; % no garbage collection ! 
var visible_fields = 0 ; 

function Hide_When_Down ()
  { event.target.hidden = true }

function Hide_Field ( Name ) 
  { var v = this.getField(Name) ; 
    if (v) { v.hidden = true } }

function Vide_Field ( Name ) 
  { var v = this.getField(Name) ;   
    if (v) 
      { ++visible_fields ; 
        visible_field[visible_fields] = Name ;  
        v.hidden = false } } 

function Hide_Fields () 
  { while (visible_fields>0)
      { Hide_Field(visible_field[visible_fields]) ;
        --visible_fields } } 

function Vide_Fields ( Name ) % show only one field 
  { Hide_Fields () ; 
    Vide_Field ( Name) } 

function Toggle_Hide ( Name ) 
  { var v = this.getField(Name) ; 
    if (v) { v.hidden = !v.hidden } } 

function Field_On ( Name ) 
  { v = this.getField(Name) ; 
    if (v) { v.value = "On" } } 

function Field_Off ( Name ) 
  { var v = this.getField(Name) ; 
    if (v) { v.value = "Off" } }

function Toggle_Value ( Name ) 
  { var v = this.getField(Name) ;
    if (v) 
      { if (v.value=="On") 
          { v.value = "Off" }
        else 
          { v.value = "On" } } }

function Toggle_Read ( Name ) 
  { var v = this.getField(Name);   
    if (v) { v.readonly = !v.readonly } }

function Flip_Fields ( Name ) 
  { var Names = Name.split(",") ;
    for (var i=0;i<Names.length;i++)
      { v = this.getField(Names[i]) ; 
        if (v)  
          { v.hidden = !v.hidden ;
            v.value = "On" } } }

\stopJSpreamble

\startJScode{Hide_When_Down}  Hide_When_Down()     \stopJScode
\startJScode{Hide_Field}      Hide_Field(JS_S_1)   \stopJScode
\startJScode{Vide_Field}      Vide_Field(JS_S_1)   \stopJScode
\startJScode{Toggle_Hide}     Toggle_Hide(JS_S_1)  \stopJScode
\startJScode{Field_On}        Field_On(JS_S_1)     \stopJScode
\startJScode{Field_Off}       Field_Off(JS_S_1)    \stopJScode
\startJScode{Toggle_Value}    Toggle_Value(JS_S_1) \stopJScode
\startJScode{Toggle_Read}     Toggle_Read(JS_S_1)  \stopJScode
\startJScode{Flip_Fields}     Flip_Fields(JS_S_1)  \stopJScode

\startJScode{Forget_Changes}  this.dirty = false   \stopJScode

\startJSpreamble {Walk_Field} used later 

function Walk_Field ( FieldSet ) 
  { var i = 1 ; 
    while (true) 
      { v = this.getField(FieldSet+":"+i) ; 
        if (v) 
          { if (v.value=="On") 
              { v.value = "Off" ; 
                var ii = i ; ii++ ; 
                v = this.getField(FieldSet+":"+ii) ; 
                if (!v) 
                  { v = this.getField(FieldSet+":"+1) }
                if (v) 
                  { v.value = "On" }
                break }  
            i++ } 
        else
          { break } } }

\stopJSpreamble

\startJScode {Walk_Field} uses {Walk_Field} 
  Walk_Field (JS_S_1) ; 
\stopJScode

\startJSpreamble {Walk_Field} used later 

function Walk_Field ( FieldSet ) 
  { var i = 1 ; 
    while (true) 
      { v = this.getField(FieldSet+":"+i) ; 
        if (v) 
          { if (v.value=="On") 
              { v.value = "Off" ; 
                var ii = i ; ii++ ; 
                v = this.getField(FieldSet+":"+ii) ; 
                if (!v) 
                  { v = this.getField(FieldSet+":"+1) }
                if (v) 
                  { v.value = "On" }
                break }
            i++ } 
        else
          { break } } }

\stopJSpreamble

\startJScode {Walk_Field} uses {Walk_Field} 
  Walk_Field (JS_S_1) ; 
\stopJScode

\startJSpreamble {Set_Field} used later 

function Set_Field ( FieldSet, FieldName ) 
  { var i = 1 ; 
    while (true) 
      { v = this.getField(FieldSet+":"+i) ; 
        if (!v) 
          { break }  
        else if (i==FieldName) 
          { v.value = "On" }
        else 
          { v.value = "Off" } 
        i++ } } 

\stopJSpreamble

\startJScode {Set_Field} uses {Set_Field} 
  Set_Field (JS_S_1,JS_S_2) ; 
\stopJScode

\endinput
