;*********************************************************************
PRO readmesh, filename, filetype, _extra = ex
;
   case filetype of
      'OPA C-Grid.Binary IEEE: Meshmask':BEGIN
         meshlec, filename, /pasblabla, _extra = ex
      END
      'OPA C-Grid.Net Cdf: Meshmask':BEGIN
         ncdf_meshlec, filename, _extra = ex
      END
      'Regular 2D.Binary IEEE: mask':
      'Regular 2D.Net Cdf: mask':
      'Regular 3D.Binary IEEE: mask+vertical axis':
      'Regular 3D.Net Cdf: mask+vertical axis':
      'Gaussian 2D.T30 truncature.Binary IEEE: mask':
      'Gaussian 2D.T30 truncature.Net Cdf: mask':
      'Gaussian 2D.T42 truncature.Binary IEEE: mask':
      'Gaussian 2D.T42 truncature.Net Cdf: mask':
      'Gaussian 3D.T30 truncature.Binary IEEE: mask':
      'Gaussian 3D.T30 truncature.Net Cdf: mask':
      'Gaussian 3D.T42 truncature.Binary IEEE: mask':
      'Gaussian 3D.T42 truncature.Net Cdf: mask':
      ELSE :
   ENDCASE
;
   return
end
;*********************************************************************
FUNCTION getgridparameter, top
@common

   widget_control, widget_info(top, find_by_uname = 'xmesh'), get_value = answer
   jpiglo = long(answer[0])
   jpi = long(answer[1])
   ixminmesh = long(answer[2])
   ixmaxmesh = long(answer[3])
   widget_control, widget_info(top, find_by_uname = 'ymesh'), get_value = answer
   jpjglo = long(answer[0])
   jpj = long(answer[1])
   iyminmesh = long(answer[2])
   iymaxmesh = long(answer[3])
   widget_control, widget_info(top, find_by_uname = 'zmesh'), get_value = answer
   jpkglo = long(answer[0])
   jpk = long(answer[1])
   izminmesh = long(answer[2])
   izmaxmesh = long(answer[3])
   widget_control, widget_info(top, find_by_uname = 'key_shift') $
    , get_value = answer
   key_shift = long(answer[0])
   widget_control, widget_info(top, find_by_uname = 'key_periodique') $
    , get_value = answer
   key_periodique = long(answer[0])
   widget_control, widget_info(top, find_by_uname = 'triangulation') $
    , get_value = answer
   triangulation = answer[0] EQ 'y'
   widget_control, widget_info(top, find_by_uname = 'Glam Boundary') $
    , get_value = answer
   rien = execute('boundary = float('+answer[0]+')')
   res = {jpiglo:jpiglo, jpjglo:jpjglo, jpkglo:jpkglo, jpi:jpi, jpj:jpj, jpk:jpk $
          , ixminmesh:ixminmesh, ixmaxmesh:ixmaxmesh $
          , iyminmesh:iyminmesh, iymaxmesh:iymaxmesh $
          , izminmesh:izminmesh, izmaxmesh:izmaxmesh $
          , key_shift:key_shift, key_periodique:key_periodique $
          , triangulation:triangulation, boundary:boundary}

   return, res
end
;*********************************************************************
pro showgridparameter, basetop, EDITABLE = editable, _EXTRA = ex
;
@common
;------------------------------------------------------------
;
   widget_control, basetop, update = 0
   base=widget_base(basetop, /COLUMN, /align_center, _EXTRA = ex)
   nothing = cw_fourparameter(base, jpiglo, jpi, ixminmesh, ixmaxmesh, 'x', 'mesh', EDITABLE = editable, CLEAR = editable, uname = 'xmesh')
   nothing = cw_fourparameter(base, jpjglo, jpj, iyminmesh, iymaxmesh, 'y', 'mesh', EDITABLE = editable, CLEAR = editable, uname = 'ymesh')
   nothing = cw_fourparameter(base, jpkglo, jpk, izminmesh, izmaxmesh, 'z', 'mesh', EDITABLE = editable, CLEAR = editable, uname = 'zmesh')
   nothing = widget_label(base, value = 'autres parametres ...')
   basea=widget_base(base, /row, /align_center)
   nothing = widget_label(basea, value = 'key_shift')
   if NOT keyword_set(key_shift) then key_shift = 0
   nothing = widget_text(basea, value = strtrim(key_shift*(1-keyword_set(editable)),1), uname = 'key_shift', xsize = 4, EDITABLE = editable)
   nothing = widget_label(basea, value = 'key_periodique')
   if NOT keyword_set(key_periodique) then key_periodique = 0
   nothing = widget_text(basea, value = strtrim(key_periodique*(1-keyword_set(editable)),1), uname = 'key_periodique', xsize = 4, EDITABLE = editable)
   baseb=widget_base(base, /row, /align_center)
   nothing = widget_label(baseb, value = 'use a triangulation (y/n) ?')
   nothing = widget_text(baseb, value = 'y', uname = 'triangulation', xsize = 4, EDITABLE = editable)
   if NOT keyword_set(editable) then begin
      ming = min(glamt, max = maxg)
      value = tostr([floor(ming), ceil(maxg)])
   ENDIF ELSE value = tostr([0, 0])
   nothing = widget_label(baseb, value = 'Glam Boundary')
   nothing = widget_text(baseb, value = value, uname = 'Glam Boundary', xsize = 10, EDITABLE = editable)
   nothing = widget_button(base, value = 'Ok, Get the Mesh parameters!', uvalue = {name:'ok finish'})
   widget_control, basetop, update = 1
;
   return
END
;*********************************************************************
FUNCTION give_file_type_choice, type = type
   if keyword_set(type) then begin
      case type of
         'nc':desc = [ '1\File or Grid type: ' , $
            '0\OPA C-Grid.Net Cdf: Meshmask' , $
            '0\Regular 2D.Net Cdf: mask' , $
            '0\Regular 3D.Net Cdf: mask+vertical axis' , $
            '1\Gaussian 2D' , $
            '0\T30 truncature.Net Cdf: mask' , $
            '2\T42 truncature.Net Cdf: mask' , $
            '1\Gaussian 3D' , $
            '0\T30 truncature.Net Cdf: mask+vertical axis' , $
            '2\T42 truncature.Net Cdf: mask+vertical axis' , $
            '2\No file' ]
      endcase
   ENDIF ELSE BEGIN
         desc = [ '1\File or Grid type: ' , $
            '0\OPA C-Grid.Binary IEEE: Meshmask' , $
            '0\Regular 2D.Binary IEEE: mask' , $
            '0\Regular 3D.Binary IEEE: mask+vertical axis' , $
            '1\Gaussian 2D' , $
            '0\T30 truncature.Binary IEEE: mask' , $
            '2\T42 truncature.Binary IEEE: mask' , $
            '1\Gaussian 3D' , $
            '0\T30 truncature.Binary IEEE: mask+vertical axis' , $
            '2\T42 truncature.Binary IEEE: mask+vertical axis' , $
            '2\No file' ]
;    desc = [ '1\File or Grid type: ' , $
;             '1\OPA C-Grid' , $
;             '0\Binary IEEE: Meshmask' , $
;             '2\Net Cdf: Meshmask' , $
;             '1\Regular 2D' , $
;             '0\Binary IEEE: mask' , $
;             '2\Net Cdf: mask' , $
;             '1\Regular 3D' , $
;             '0\Binary IEEE: mask+vertical axis' , $
;             '2\Net Cdf: mask+vertical axis' , $
;             '1\Gaussian 2D' , $
;             '1\T30 truncature' , $
;             '0\Binary IEEE: mask' , $
;             '2\Net Cdf: mask' , $
;             '1\T42 truncature' , $
;             '0\Binary IEEE: mask' , $
;             '2\Net Cdf: mask' , $
;             '2\' , $
;             '1\Gaussian 3D' , $
;             '1\T30 truncature' , $
;             '0\Binary IEEE: mask+vertical axis' , $
;             '2\Net Cdf: mask+vertical axis' , $
;             '1\T42 truncature' , $
;             '0\Binary IEEE: mask+vertical axis' , $
;             '2\Net Cdf: mask+vertical axis' , $
;             '2\' , $
;             '2\No file' ]
ENDELSE
   return, desc
end
;*********************************************************************
PRO whichgrid_event, event
@common
   widget_control, event.id,  get_uvalue = eventuvalue
   IF chkstru(eventuvalue,'name') EQ 0 THEN return
   case eventuvalue.name OF
      'Cancel':BEGIN 
         widget_control, event.handler, get_uvalue = messenger
         *messenger = -1
         widget_control,event.handler,/destroy
      END
      'filename':BEGIN
; on detruit, si il existe deja, ce que l''on va ajouter au widget 
         typebaseid = widget_info(event.handler, find_by_uname = 'typebase')
         if typebaseid NE 0 then widget_control,typebaseid,/destroy
         showgridparameterid = widget_info(event.handler, find_by_uname = 'showgridparameter')
         if showgridparameterid NE 0 then widget_control,showgridparameterid,/destroy
;
         widget_control, event.id, get_value = filename
         filename = filename[0]
         filename = isafile(filename = filename)
         if size(filename, /type) NE 7 then return
         if rstrpos(filename, '.pro') EQ strlen(filename)-4 then begin
            createpro, '@'+strmid(filename, 0, strlen(filename)-4) $
          , filename = isadirectory(io = homedir, title = 'Bad definition of Homedir') $
          +'for_createpro.pro'
            showgridparameter, event.handler, group_leader = event.handler,/frame, uname = 'showgridparameter'
         ENDIF ELSE BEGIN
            basetype=widget_base(event.handler, /row, /align_center, group_leader = event.handler, uname = 'typebase')
            type = ''
            if rstrpos(filename, '.nc') EQ strlen(filename)-3 then type = 'nc'
            nothing = cw_pdmenu(basetype, give_file_type_choice(type = type), /return_full_name, uname = 'file type choice', uvalue = {name:'file type choice'})
            nothing = widget_text(basetype, value = '', uname = 'file type', uvalue = {name:'file type'})
         ENDELSE
      END
      'browse filename':BEGIN
; on detruit, si il existe deja, ce que l''on va ajouter au widget 
         typebaseid = widget_info(event.handler, find_by_uname = 'typebase')
         if typebaseid NE 0 then widget_control,typebaseid,/destroy
         showgridparameterid = widget_info(event.handler, find_by_uname = 'showgridparameter')
         if showgridparameterid NE 0 then widget_control,showgridparameterid,/destroy
;
         filename = isafile()
         if size(filename, /type) NE 7 then return
         widget_control, widget_info(event.handler, find_by_uname = 'Filename'), set_value = filename
         if rstrpos(filename, '.pro') EQ strlen(filename)-4 then begin
            createpro, '@'+strmid(filename, 0, strlen(filename)-4) $
          , filename = isadirectory(io = homedir, title = 'Bad definition of Homedir') $
          +'for_createpro.pro'
            showgridparameter, event.handler, group_leader = event.handler,/frame, uname = 'showgridparameter'
         ENDIF ELSE BEGIN
            basetype=widget_base(event.handler, /row, /align_center, group_leader = event.handler, uname = 'typebase')
            type = ''
            if rstrpos(filename, '.nc') EQ strlen(filename)-3 then type = 'nc'
            nothing = cw_pdmenu(basetype, give_file_type_choice(type = type), /return_full_name, uname = 'file type choice', uvalue = {name:'file type choice'})
            nothing = widget_text(basetype, value = '', uname = 'file type', uvalue = {name:'file type'})
         ENDELSE
      END
      'file type choice':BEGIN
         widget_control, widget_info(event.handler,find_by_uname='Filename'), get_value = filename
         filename = filename[0]
         filetype = event.value
         filetype = strmid(filetype, strpos(filetype, '.')+1)
         widget_control, widget_info(event.handler, find_by_uname = 'file type'), set_value = filetype
         case filetype of
            'OPA C-Grid.Binary IEEE: Meshmask':BEGIN
               meshlec, filename, /pasblabla, /getdimensions
               showgridparameter, event.handler, /editable, group_leader = event.handler,/frame, uname = 'showgridparameter'
            END
            'OPA C-Grid.Net Cdf: Meshmask':BEGIN
               ncdf_meshlec, filename, /getdimensions
               showgridparameter, event.handler, /editable, group_leader = event.handler,/frame, uname = 'showgridparameter'
            END
            'Regular 2D.Binary IEEE: mask':
            'Regular 2D.Net Cdf: mask':
            'Regular 3D.Binary IEEE: mask+vertical axis':
            'Regular 3D.Net Cdf: mask+vertical axis':
            'Gaussian 2D.T30 truncature.Binary IEEE: mask':
            'Gaussian 2D.T30 truncature.Net Cdf: mask':
            'Gaussian 2D.T42 truncature.Binary IEEE: mask':
            'Gaussian 2D.T42 truncature.Net Cdf: mask':
            'Gaussian 3D.T30 truncature.Binary IEEE: mask':
            'Gaussian 3D.T30 truncature.Net Cdf: mask':
            'Gaussian 3D.T42 truncature.Binary IEEE: mask':
            'Gaussian 3D.T42 truncature.Net Cdf: mask':
            ELSE :
         endcase

      END
      'file type':BEGIN
         help, event, /struct
      END
      'ok finish':BEGIN
         widget_control, widget_info(event.handler,find_by_uname='Filename'),get_value=filename
         filename = filename[0]
         typeid = widget_info(event.handler,find_by_uname='file type')
         if typeid NE 0 then begin
            widget_control, typeid, get_value=filetype
            filetype = filetype[0]
         ENDIF ELSE filetype = 'batch file'
         widget_control, event.handler, get_uvalue = messenger
         *messenger = create_struct('filename', filename, 'filetype', filetype, getgridparameter(event.handler))
;
         readmesh, filename, filetype[0], glamboundary = (*messenger).boundary
;
         widget_control,event.handler,/destroy
      END      
      ELSE:
   endcase
   return
END
;*********************************************************************
FUNCTION whichgrid, name, IODIRECTORY = iodirectory, PARENT = parent, _EXTRA = ex
@common
;
;
   if n_elements(name) NE 0 then begin
      filename = isafile(filename = name)
      if size(filename, /type) NE 7 then return, -1
   ENDIF ELSE filaname = 'no file'
;
; pour recuperer les reponses possees lors de l''utilisation de ce
; widget on cree un pointeur que l''on place dans la uvalue. Comme ca
; une fois que le widget est detruit dans la procedure ...event.pro,
; la variable surlaquelle pointait le pointeur (contenue ds la uvalue
; du widget) n''est pas detruite est on peut recuperer le resultat!
;
   messenger = ptr_new(/allocate_heap)
;
   if keyword_set(parent) then BEGIN
   base=widget_base(parent, /COLUMN, title = 'whichgrid', /align_center, uvalue = messenger, _EXTRA = ex)
   ENDIF ELSE BEGIN 
      base=widget_base(/COLUMN, title = 'whichgrid', /align_center, uvalue = messenger, _EXTRA = ex)
      nothing = widget_button(base, value = 'Cancel', uvalue = {name:'Cancel'})
   ENDELSE
;
   basemane=widget_base(base, /row, /align_center)
   nothing = widget_label(basemane, value = 'Mesh Filename or IDL batch file')
   nothing = widget_text(basemane, value = filename, uname = 'Filename', uvalue = {name:'filename'}, /editable)
   nothing = widget_button(basemane, value = 'Browse', uvalue = {name:'browse filename'})
;
   if filename NE 'no file' then begin
      if rstrpos(filename, '.pro') EQ strlen(filename)-4 then begin
         createpro, '@'+strmid(filename, 0, strlen(filename)-4) $
          , filename = isadirectory(io = homedir, title = 'Bad definition of Homedir') $
          +'for_createpro.pro'
         showgridparameter, base, group_leader = base,/frame, uname = 'showgridparameter'
      ENDIF ELSE BEGIN
         basetype=widget_base(base, /row, /align_center, group_leader = base, uname = 'typebase')
         type = ''
         if rstrpos(filename, '.nc') EQ strlen(filename)-3 then type = 'nc'
         nothing = cw_pdmenu(basetype, give_file_type_choice(type = type), /return_full_name, uname = 'file type choice', uvalue = {name:'file type choice'})
         nothing = widget_text(basetype, value = '', uname = 'file type', uvalue = {name:'file type'})
      ENDELSE

   endif
;
   widget_control,base,/realize
   xmanager,'whichgrid', base,event_handler = 'whichgrid_event', no_block = 0
   res = *messenger
   ptr_free, messenger


   return, res
end