source: trunk/ToBeReviewed/WIDGET/AUTOUR_de_XXX/changefile.pro @ 69

PRO changefile, base, newfilename, BOXZOOM = boxzoom, DATE1 = date1, DATE2 = date2, FIELDNAME = fieldname
;
  widget_control, base, /hourglass
  widget_control, base, get_uvalue = top_uvalue
  filelist = extractatt(top_uvalue, 'filelist')
  IF size(newfilename, /type) EQ 7 THEN newfile = (where(filelist EQ newfilename))[0] $
  ELSE newfile = newfilename    ; it is already the index of the new file
  if newfile EQ -1 then begin
    nothing, report('invalid filename')
    return
  endif
  oldfile = extractatt(top_uvalue, 'currentfile')
  oldfilename = filelist[oldfile]

; did we really change the file???
  if oldfile EQ newfile AND NOT (keyword_set(BOXZOOM) OR keyword_set(DATE1) OR keyword_set(DATE2) OR keyword_set(FIELDNAME)) then return

;--------------
  widget_control, base, update = 0
;--------------
;
; we update currentfile element of the top_uvalue
;
  *top_uvalue[1, findline(top_uvalue, 'currentfile')] = newfile
;
; Calendar
;
  oldcalendar = (*(extractatt(top_uvalue, 'fileparameters'))[oldfile]).time_counter
  newcalendar = (*(extractatt(top_uvalue, 'fileparameters'))[newfile]).time_counter
; Did we change the calendar?
  if array_equal(oldcalendar, newcalendar) NE 1 then begin
@cm_4cal ; for key_caltype
    key_caltype = (*(extractatt(top_uvalue, 'fileparameters'))[newfile]).caltype
; Which dates were selected?    
    date1id = widget_info(base, find_by_uname = 'calendar1')
    if NOT keyword_set(date1) then widget_control, date1id, get_value = date1
    jdate1 = date2jul(date1)
    if (where(newcalendar EQ jdate1))[0] EQ -1 then jdate1 = newcalendar[0]
    date2id = widget_info(base, find_by_uname = 'calendar2')
    if NOT keyword_set(date2) then widget_control, date2id, get_value = date2
    jdate2 = date2jul(date2)
    if (where(newcalendar EQ jdate2))[0] EQ -1 then jdate2 = date1
    if jdate2 LT jdate1 THEN jdate2 = jdate1
    widget_control, date1id, /destroy
    widget_control, date2id, /destroy
    basecal = widget_info(base, find_by_uname = 'basecal')
    rien = cw_calendar(basecal, newcalendar, jdate1, uname = 'calendar1' $
                       , uvalue = {name:'calendar1'}, /frame)
    rien = cw_calendar(basecal, newcalendar, jdate2, uname = 'calendar2' $
                       , uvalue = {name:'calendar2'}, /frame)
  ENDIF ELSE BEGIN 
    if keyword_set(date1) then begin
      date1id = widget_info(base, find_by_uname = 'calendar1')
      widget_control, date1id, set_value = date1
    endif
    if keyword_set(date2) then begin
      date2id = widget_info(base, find_by_uname = 'calendar2')
      widget_control, date2id, set_value = date2
    endif
  ENDELSE
;
; Grid parameters and domain
;
  newgrid = *(extractatt(top_uvalue, 'meshparameters'))[newfile]
  change = changegrid(newgrid)
  if change OR keyword_set(boxzoom) then BEGIN
    if NOT keyword_set(boxzoom) then boxzoom = -1
    domainid = widget_info(base, find_by_uname = 'domain')
    widget_control, domainid, set_value = boxzoom
  endif
;
; file name
;
  IF oldfile NE newfile THEN BEGIN 
    flstid = widget_info(base, find_by_uname = 'filelist')
    widget_control, flstid, set_combobox_select =  newfile
  ENDIF 
;
; Variables name
;
  vlstid = widget_info(base, find_by_uname = 'varlist')
  oldfieldname = widget_info(vlstid, /combobox_gettext)
; did we really change the liste of variables?
  oldlistvar = (*(extractatt(top_uvalue, 'fileparameters'))[oldfile]).listvar
  newlistvar = (*(extractatt(top_uvalue, 'fileparameters'))[newfile]).listvar
  if array_equal(oldlistvar, newlistvar) NE 1 THEN $
     widget_control, vlstid, set_value = newlistvar
; set the liste of variables to the new variable name
  if keyword_set(fieldname) then newfieldname = fieldname ELSE newfieldname = oldfieldname
  indexvar = where(newlistvar EQ newfieldname) & indexvar = 0 > indexvar[0]
  widget_control, vlstid, set_combobox_select = indexvar
  newfieldname = newlistvar[indexvar]
; did we change the name of the variable?
  if newfieldname NE oldfieldname then BEGIN
    changefield, base, newfieldname, BOXZOOM = boxzoom
  ENDIF
;
;--------------
  widget_control, base, update = 1
;--------------
  return
end