;------------------------------------------------------------
;------------------------------------------------------------
;------------------------------------------------------------
;+
; NAME:buildreadcommand
;
; PURPOSE:
;
; CATEGORY:
;
; CALLING SEQUENCE:
; 
; INPUTS:
;
; KEYWORD PARAMETERS:
;
; OUTPUTS:
;
; COMMON BLOCKS:common.pro
;
; SIDE EFFECTS:
;
; RESTRICTIONS:
;
; EXAMPLE:
;
; MODIFICATION HISTORY:Sebastien Masson (smasson@lodyc.jussieu.fr)
;
;-
;------------------------------------------------------------
;------------------------------------------------------------
;------------------------------------------------------------
FUNCTION buildreadcommand, base, snameexp, procedure, type, BOITE = boite, COMPLETE = complete, NAMEFIELD = namefield
;------------------------------------------------------------
; on recuper les ID des differents widgets 
;------------------------------------------------------------
   filelistid = widget_info(base, find_by_uname = 'filelist')
   champid = widget_info(base, find_by_uname = 'champ')
   nomexpid = widget_info(base, find_by_uname = 'nom_exp')
   date1id = widget_info(base, find_by_uname = 'calendar1')
   date2id = widget_info(base, find_by_uname = 'calendar2')
   domainid = widget_info(base, find_by_uname = 'domain')
;   optionid = widget_info(base, find_by_uname = 'option')
;------------------------------------------------------------
   widget_control,base, get_uvalue = top_uvalue
   numdessinin = (extractatt(top_uvalue, 'petitin'))[2]-1
   numdessinout = (extractatt(top_uvalue, 'petitout'))[2]-1
;---------------
; determination du nom du fichier
;---------------
   currentfile = extractatt(top_uvalue, 'currentfile')
   filelist = extractatt(top_uvalue, 'filelist')
   filename = filelist[currentfile]
   sfilename = ''''+filename+''''
;---------------
; on recupere le nom de la variable
;---------------
   if NOT keyword_set(namefield) then begin
      listvar = (*(extractatt(top_uvalue, 'fileparameters'))[currentfile]).listvar
      nomvariable = listvar[widget_info(champid, /droplist_select)]
   ENDIF ELSE nomvariable = namefield
   snomvariable = ''''+nomvariable+''''
;
;  recherche des options
;
   options = extractatt(top_uvalue, 'options')   
   flags = extractatt(top_uvalue, 'optionsflag')
   flags = flags[*, numdessinin]
   xindex = (flags[where(options EQ 'Longitude / x index')])[0]
   yindex = (flags[where(options EQ 'Latitude / y index')])[0]
;
   extra = extractatt(top_uvalue, 'extra')
   if xindex NE 0 then extra = create_struct(extra, 'xindex', xindex)
   if yindex NE 0 then extra = create_struct(extra, 'yindex', yindex)
   exextra = cw_specifie_get_value(base)
   exextra = extractstru(exextra, ['min', 'max', 'inter', 'lct'])
   if size(exextra, /type) EQ 8 then extra = mixstru(exextra,extra)
   sextra = struct2string(extra)

;---------------
; determination de date1 et date2
;---------------
   widget_control, date1id, get_value = date1
;
   widget_control, date2id, get_value = date2
   date1 = long(date1) & date2 = long(date2)
;
   if procedure EQ 'pltt' AND date1 EQ date2 then begin
      currentfile = extractatt(top_uvalue, 'currentfile')
      calendar = (*(extractatt(top_uvalue, 'fileparameters'))[currentfile]).time_counter
      caldat, calendar,monthcal,daycal,yearcal
      if total(daycal eq 15) EQ n_elements(calendar) then monthly = 1
      if total(monthcal EQ 6) EQ n_elements(calendar) then BEGIN 
         monthly = 1 
         yearly = 1
      endif
      date1 = vairdate(calendar[0], mensuel = monthly, annuel = yearly)
      date2 = vairdate(calendar[n_elements(calendar)-1], mensuel = monthly, annuel = yearly)
      widget_control, date1id, set_value = date1
      widget_control, date2id, set_value = date2
   endif
;
   sdate1 = strtrim(date1, 1) & sdate2 = strtrim(date2, 1)
;---------------
; determination du nom de la boite 
;---------------
   if NOT keyword_set(boite) then widget_control, domainid, get_value = boite
; ecriture de celle-ci sous forme d''un string
   box = '['+strtrim(boite[0], 1)
   for i = 1, (n_elements(boite)-1) < (3+2*(strpos(type, 'z') EQ -1)) do $
    box = box+', '+strtrim(boite[i], 1)
   if strpos(type, 'z') NE -1 then BEGIN
      @common
      min = min([gdept, gdepw], max = max)
      box = box+','+strtrim(floor(min), 1)+','+strtrim(ceil(max), 1)
   endif
   box = box+']'
;---------------
; determination de funclec_name, readparameters, meshparameters
;---------------
   readparameters = *(extractatt(top_uvalue, 'readparameters'))[currentfile]
   funclec_name = readparameters.funclec_name
   if keyword_set(complete) then begin
      sreadparameters = struct2string(readparameters)
      meshparameters = *(extractatt(top_uvalue, 'meshparameters'))[currentfile]
      smeshparameters = struct2string(meshparameters)
;------------------------------------------------------------
;------------------------------------------------------------
;------------------------------------------------------------
; on va definir le string qui contiendra la commande a executer pour
; la lecture
;------------------------------------------------------------
      Commande = ['; declaration de la structure extra:', 'extra='+sextra $
                  , '; declaration de la structure readparameters:', 'readparameters='+sreadparameters $
                  , '; on change de lecture?:', 'nothing=changeread(readparameters)' $
                  , '; declaration de la structure meshparameters:', 'meshparameters='+smeshparameters $
                  , '; on change de grille?:', 'nothing=changegrid(meshparameters)' $
                  , '; lecture du champ' $
                  , 'if keyword_set(date1in) then date1 = date1in else date1 = '+sdate1 $
                  , 'if keyword_set(date2in) then date2 = date2in else date2 = '+sdate2 $
                  , 'litchamp('+funclec_name+'('+snomvariable+', date1, date2,'+snameexp $
                  +',parent='+strtrim(base, 1)+',boite='+box+' $',', filename='+sfilename+' $' $
                  , ', _extra=mixstru(ex, extra)))']
      (*top_uvalue[1, findline(top_uvalue, 'champs')])[*, numdessinout] = [filename, nomvariable]
      (*top_uvalue[1, findline(top_uvalue, 'dates')])[*, numdessinout] = [date1, date2]
   ENDIF ELSE BEGIN
      Commande = ['; lecture du champ' $
                  , 'if keyword_set(date1in) then date1 = date1in else date1 = '+sdate1 $
                  , 'if keyword_set(date2in) then date2 = date2in else date2 = '+sdate2 $
                  , 'litchamp('+funclec_name+'('+snomvariable+', date1, date2,'+snameexp $
                  +',parent='+strtrim(base, 1)+',boite='+box+' $',', filename='+sfilename+' $' $
                  , ', _extra=mixstru(ex, extra)))']
   ENDELSE
;    print, '::::::::::::::::::::::'
;    for i = 0, n_elements(Commande)-1 do print, Commande[i]
;    print, '::::::::::::::::::::::'
;------------------------------------------------------------

;------------------------------------------------------------
   return, commande
end