%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 ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

% will be simplified, since we now parse functions

% nu nog alles geladen, moet dus anders

\startJSpreamble {Sanitize_TeX_Input} used later

  function Sanitized_TeX_String (value)
    { var v = value ;
      v = v.replace(  /\\\\oe/g,"\\234") ;
      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(  /\\\\`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(  /\\\\`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 fields_1 used now

var visible_field  = new Array() ;
var visible_fields = 0 ;

function PresetFields ( )
  { this.syncAnnotScan() }

function Preset_Fields ( )
  { this.syncAnnotScan() }

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

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

function Do_Vide_Field ( Name, Closable )
  { var v = this.getField(Name) ;
    if (v)
      { ++visible_fields ;
        visible_field[visible_fields] = Name ;
        v.hidden = false ;
        if (Closable)
          { v.readonly = false ;
            v.value = "On" }
        this.dirty = false } }

function Vide_Field ( Name )
  { Do_Vide_Field(Name,false) }

function Vide_Hide_Field ( Name )
  { Do_Vide_Field(Name,true) }

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

function Vide_Fields ( Name )
  { Hide_Fields () ;
    Vide_Field ( Name) }

function Vide_Hide_Fields ( Name )
  { Hide_Fields () ;
    Vide_Hide_Field ( Name) }

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

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

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

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

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" } } }

function Forget_Changes ()
  { this.dirty = false }

function ForgetChanges ()
  { this.dirty = false }
\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

\definereference[ForgetChanges][JS(Forget_Changes)]

% This can be done more efficient, by keeping track of the
% current top of the stack.

\startJSpreamble FieldStack used later

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

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

function Set_Field ( FieldSet, FieldName ) {
    Reset_Fields(FieldSet) ;
    v = this.getField(FieldSet+":"+FieldName) ;
    if (v) {
        v.value = "On" ;
    }
}

function Reset_Field ( FieldSet, FieldName ) {
    Set_Fields(FieldSet) ;
    v = this.getField(FieldSet+":"+FieldName) ;
    if (v) {
        v.value = "Off" ;
    }
}

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 ;
        }
    }
}

var FieldSets = new Array() ;

function Do_Get_Check_Walk_Field ( FieldSet ) {
    var f = FieldSets[FieldSet]
    if (! f) {
        f =  new Array() ;
        f.number = 0 ;
        f.delay = 500 ;
        f.paused = false ;
        f.running = false ;
        f.name = FieldSet ;
        f.timeout = null ;
        FieldSets[FieldSet] = f ;
    }
    return f
}

function Do_Next_Auto_Walk_Field ( FieldSet ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        var v = this.getField(FieldSet + ":" + fieldset.number) ;
        if (v) {
            if (v.value == "On") {
                v.value = "Off" ;
            }
        }
        fieldset.number++ ;
        v = this.getField(FieldSet + ":" + fieldset.number) ;
        if (! v) {
            fieldset.number = 1 ;
            v = this.getField(FieldSet + ":" + fieldset.number) ;
        }
        if (v) {
            v.value = "On"
        }
    }
}

function Do_Stop_Auto_Walk_Field ( FieldSet ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        try {
            app.clearInterval(fieldset.timeout) ;
            app.clearTimeOut(fieldset.timeout) ;
        } catch (e) {
        }
    }
}

function Do_Start_Auto_Walk_Field ( FieldSet ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        Do_Stop_Auto_Walk_Field(FieldSet) ;
        fieldset.timeout = app.setInterval("Do_Next_Auto_Walk_Field('"+FieldSet+"')", fieldset.delay) ;
    }
}

function Start_Walk_Field ( FieldSet, Delay ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        fieldset.number = 0 ;
        if (Delay) {
            fieldset.delay = Delay ;
        }
        Reset_Fields(FieldSet) ;
        Do_Start_Auto_Walk_Field(FieldSet) ;
        fieldset.running = true ;
        fieldset.paused = false ;
    }
}

function Pause_Walk_Field ( FieldSet ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        if (fieldset.running) {
            if (fieldset.paused) {
                Do_Start_Auto_Walk_Field(FieldSet) ;
                fieldset.paused = false ;
            } else {
                Do_Stop_Auto_Walk_Field(FieldSet) ;
                fieldset.paused = true ;
            }
        }
    }
}

function Stop_Walk_Field ( FieldSet ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        Do_Stop_Auto_Walk_Field(FieldSet) ;
        fieldset.running = false ;
        fieldset.paused = false ;
    }
}

function Reset_Walk_Field ( FieldSet ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        Do_Stop_Auto_Walk_Field(FieldSet) ;
        fieldset.number = 0 ;
        fieldset.running = false ;
        fieldset.paused = false ;
        Reset_Fields(FieldSet) ;
    }
}

function Previous_Walk_Field ( FieldSet ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        Do_Stop_Auto_Walk_Field(FieldSet) ;
        fieldset.running = false ;
        fieldset.paused = false ;
        if (fieldset.number>0) {
            var v = this.getField(FieldSet + ":" + fieldset.number) ;
            if (v) {
                if (v.value == "On") {
                    v.value = "Off" ;
                }
            }
            fieldset.number-- ;
            v = this.getField(FieldSet + ":" + fieldset.number) ;
            if (v) {
                v.value = "On" ;
            }
        }
    }
}

function Next_Walk_Field ( FieldSet ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        Do_Stop_Auto_Walk_Field(FieldSet) ;
        fieldset.running = false ;
        fieldset.paused = false ;
        var f = fieldset.number + 1 ;
        var v = this.getField(FieldSet + ":" + f) ;
        if (v) {
            var v = this.getField(FieldSet + ":" + fieldset.number) ;
            if (v) {
                if (v.value == "On") {
                    v.value = "Off" ;
                }
            }
            fieldset.number++ ;
            v = this.getField(FieldSet + ":" + fieldset.number) ;
            if (v) {
                v.value = "On" ;
            }
        }
    }
}

function Set_Walk_Field_Delay ( FieldSet, Delay ) {
    var fieldset = Do_Get_Check_Walk_Field(FieldSet) ;
    if (fieldset) {
        if (Delay) {
            fieldset.delay = Delay ;
            if (fieldset.running) {
                Do_Stop_Auto_Walk_Field(FieldSet) ;
                Do_Start_Auto_Walk_Field(FieldSet) ;
            }
        }
    }
}

\stopJSpreamble

\definereference[Walk]        [JS(Walk_Field)]
\definereference[StartWalk]   [JS(Start_Walk_Field)]
\definereference[StopWalk]    [JS(Stop_Walk_Field)]
\definereference[PauseWalk]   [JS(Pause_Walk_Field)]
\definereference[ResetWalk]   [JS(Reset_Walk_Field)]
\definereference[PreviousWalk][JS(Previous_Walk_Field)]
\definereference[NextWalk]    [JS(Next_Walk_Field)]
\definereference[SetWalkDelay][JS(Set_Walk_Field_Delay)]

\endinput