;------------------------------------------------------------
;------------------------------------------------------------
;------------------------------------------------------------
;+
; NAME:buildreadcmd
;
; 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 buildreadcmd, base, snameexp, procedure, type, BOXZOOM = boxzoom $
                       , COMPLETE = complete, NAMEFIELD = namefield
;
;
  compile_opt idl2, strictarrsubs
;
@cm_4cal ; for key_caltype
;------------------------------------------------------------
; get back widgets IDs
;------------------------------------------------------------
  vlstid = widget_info(base, find_by_uname = 'varlist')
  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, 'smallin'))[2]-1
  numdessinout = (extractatt(top_uvalue, 'smallout'))[2]-1
;---------------
; name of the file
;---------------
  currentfile = extractatt(top_uvalue, 'currentfile')
  filelist = extractatt(top_uvalue, 'filelist')
  filename = filelist[currentfile]
  sfilename = ''''+filename+''''
;---------------
; name of the variable
;---------------
  if keyword_set(namefield) then namevar = namefield $
  ELSE namevar = widget_info(vlstid, /combobox_gettext)
  snamevar = ''''+namevar+''''
;
; get the 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)
;---------------
; find date1 and date2
;---------------
  key_caltype = (*(extractatt(top_uvalue, 'fileparameters'))[currentfile]).caltype
  widget_control, date1id, get_value = date1
  widget_control, date2id, get_value = date2

  if procedure EQ 'pltt' AND date1 EQ date2 then BEGIN
; we redefine the dates to the begining and end of the calendar
    calendar = (*(extractatt(top_uvalue, 'fileparameters'))[currentfile]).time_counter
    date1 = jul2date(calendar[0])
    date2 = jul2date(calendar[n_elements(calendar)-1])
    widget_control, date1id, set_value = date1
    widget_control, date2id, set_value = date2
  endif
;
  fakecal = (*(extractatt(top_uvalue, 'fileparameters'))[currentfile]).fakecal
  IF keyword_set(fakecal) THEN BEGIN
    date1 = date2jul(date1) - fakecal
    date2 = date2jul(date2) - fakecal
  ENDIF
  sdate1 = strtrim(date1, 1) & sdate2 = strtrim(date2, 1)
;---------------
; find boxzoom
;---------------
  if NOT keyword_set(boxzoom) then widget_control, domainid, get_value = boxzoom
; put boxzoom into a string
  box = '['+strtrim(boxzoom[0], 1)
  for i = 1, (n_elements(boxzoom)-1) < (3+2*(strpos(type, 'z') EQ -1)) do $
     box = box+', '+strtrim(boxzoom[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+']'
  IF strpos(type, ' diag up') NE -1 THEN BEGIN
    sendpoints = '[' + strtrim(boxzoom[0], 1) + ', ' + strtrim(boxzoom[2], 1) + $
                ', ' + strtrim(boxzoom[1], 1) + ', ' + strtrim(boxzoom[3], 1) + ']'
  ENDIF
  IF strpos(type, ' diag dn') NE -1 THEN BEGIN
    sendpoints = '[' + strtrim(boxzoom[0], 1) + ', ' + strtrim(boxzoom[3], 1) + $
                ', ' + strtrim(boxzoom[1], 1) + ', ' + strtrim(boxzoom[2], 1) + ']'
  ENDIF
;---------------
; find 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
;------------------------------------------------------------
    Cmd = ['; Definition of extra structure:', 'extra = '+sextra $
           , '; Definition of readparameters structure:', 'readparameters = '+sreadparameters $
           , '; Do we change of reading?:', 'dummy = changeread(readparameters)' $
           , '; Definition of meshparameters structure:', 'meshparameters = '+smeshparameters $
           , '; Do we change the grid?:', 'dummy = changegrid(meshparameters)' $
           , '; Read the data...' $
           , 'if n_elements(date1in) ne 0 then date1 = date1in else date1 = ' + sdate1 $
           , 'if n_elements(date2in) ne 0 then date2 = date2in else date2 = ' + sdate2 $
           , funclec_name+'('+snamevar+', date1, date2, '+snameexp $
           + ', timestep = '+strtrim(keyword_set(fakecal), 1)+', parent = '+strtrim(base, 2) $
           + ', boxzoom = '+box+', /findalways $' $
           , '    , filename = '+sfilename+' $']
    if n_elements(sendpoints) NE 0 then $
       Cmd = [Cmd, '    , endpoints = ' + sendpoints + ', type = ''' + type  + ''' $']
    Cmd = [Cmd, '    , _extra = mixstru(ex, extra), /nostruct)']
    (*top_uvalue[1, findline(top_uvalue, 'varinfo')])[*, numdessinout] = [filename, namevar]
    (*top_uvalue[1, findline(top_uvalue, 'dates')])[*, numdessinout] = [date1, date2]
  ENDIF ELSE BEGIN
    Cmd = [funclec_name+'('+snamevar+', date1, date2, '+snameexp $
           +', parent = '+strtrim(base, 1)+', boxzoom = '+box+' $' $
           , '    , filename = '+sfilename+' $']
    if n_elements(sendpoints) NE 0 then $
       Cmd = [Cmd, '    , endpoints = ' + sendpoints + ', type = ''' + type  + ''' $']
    Cmd = [Cmd, '    , _extra = mixstru(ex, extra), /nostruct)']
  ENDELSE
;    print, '::::::::::::::::::::::'
;    for i = 0, n_elements(Cmd)-1 do print, Cmd[i]
;    print, '::::::::::::::::::::::'
;------------------------------------------------------------

;------------------------------------------------------------
  return, cmd
end