;+ 
;NAME:
; thm_ui_npar_new
;PURPOSE:
; Simple widget that allows user to change n parameter values and units (if units were
; specified)
;CALLING SEQUENCE:
; new_value = thm_ui_npar_new(name, init_value, [radio_array=radio_array], $
;                         [radio_value=radio_value])
;INPUT:
; name = the name of the parameter, can be an array
; init_value = the initial value of the parameter, e.g., '1.0', must
;              be a string array of the smae size as name
; radio_array = optional string array containing radio button names
; title=title = optional title for the panel
; radio_value = optional string containing the radio button to set initially
;OUTPUT:
; new_value = the output value of the parameters, a string array of values,
;             e.g., ['4.67', '3.0', ...n]
;             if optional radio buttons were used the last element of  the array
;             will contain the radio button selection,
;             e.g., ['4.67', '3.0', ..., 'inches']
;METHODS:
; thm_ui_npar_new0 - creates the window, widgets, and calls the xmanager
; thm_ui_npar_new0_event - event handler for the window (handles parameter input, cancel/
;                      accept buttons, and window close 'X'
; thm_ui_rad_event - event handler for the radio buttons; thm_ui_npar_new0 - creates the window, widgets, and calls the xmanager
;HISTORY:
; 5-feb-2007, jmm, jimm@ssl.berkeley.edu
; 25-OCt-2007, jmm, added KILL_REQUEST block
; 15-may-2008, cg, added optional title for widget
; 20-jan-2009, jmm, Testing SVN
; 20-jan-2009, jmm, Testing SVN again
; 20-jan-2009, jmm, And again
;$LastChangedBy: lphilpott $
;$LastChangedDate: 2012-06-18 14:37:32 -0700 (Mon, 18 Jun 2012) $
;$LastChangedRevision: 10578 $
;$URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/thmsoc/tags/tdas_8_00/idl/themis/thm_ui/thm_ui_npar_new.pro $
;
;-

Pro thm_ui_npar_new0_event, event
  common thm_ui_npar_new0_private, value_sav

;If the 'X' is hit...
  If(TAG_NAMES(event, /STRUCTURE_NAME) EQ 'WIDGET_KILL_REQUEST') Then Begin
    value_sav = 'Cancelled'
    widget_control, event.top, /destroy
    Return
  Endif
  widget_control, event.id, get_uval = uval
  If(uval Eq 'YES') Then Begin
    widget_control, event.top, /destroy
  Endif Else If(uval Eq 'NO') Then Begin
    value_sav = 'Cancelled'
    widget_control, event.top, /destroy
  Endif Else Begin
    j = fix(strmid(uval, 4))
    widget_control, event.id, get_val = temp_string
    value_sav[j] = temp_string
  Endelse
Return
End

Pro thm_ui_rad_event_new, event
  common thm_ui_npar_new0_private, value_sav

  ; retrieve the radio button selection and save it
  widget_control, event.id, get_value = value
  value_sz = size(value_sav, /dimensions)
  value_sav(value_sz-1) = value

Return
End

Pro thm_ui_npar_new0, name, init_value, radio_array = radio_array, $
                      radio_value = radio_value, $
                      title = title, radio_label = radio_label, $
                      label_xsize = label_xsize, button_xsize = button_xsize

  If(keyword_set(label_xsize)) Then xsz = label_xsize Else xsz = 0
  If(keyword_set(button_xsize)) Then bxsz = button_xsize Else bxsz = 0
  if is_string(title) then $
     master = widget_base(/col, title = title, /tlb_kill_request_events)$
     else master = widget_base(/col, title = 'Input Values', /tlb_kill_request_events)

  n = n_elements(name)
  listw = intarr(n)
  For j = 0, n-1 Do Begin
    uvalj = 'LIST'+strcompress(/remove_all, j)
    listid = widget_base(master, /row, /align_left)
    if name[j] ne '' then flabel = widget_label(listid, value = name[j], xsize = xsz)
    if init_value[j] ne '' then   listw[j] = widget_text(listid, $
                      value = init_value[j], $
                      xsiz = max(strlen(init_value[j]))+20, $
                      ysiz = 1, uval = uvalj, $
                      /editable, /all_events)

  Endfor

  ;if the radio button option was used...
  if keyword_set(radio_array) then Begin
    nsel = n_elements(radio_array[0, *])
    For j = 0, nsel-1 Do Begin
      units_basej0 = widget_base(master, /row, /align_left)      
      If(n_elements(radio_label) Eq nsel) Then $
        lbl = widget_label(units_basej0, value = radio_label[j], xsize = xsz)
      units_basej = widget_base(units_basej0, /exclusive, /row, /align_left)
      temp = is_string(radio_array[*, j], rdarr)
      radio_buttonj = indgen(n_elements(rdarr))
      for i = 0, n_elements(rdarr)-1 do Begin
        radio_buttonj[i] = widget_button(units_basej, val = rdarr[i], $
                                         event_pro = 'thm_ui_rad_event_new', xsize = bxsz)
      endfor
      loc = where(rdarr Eq radio_value[j])
      widget_control, radio_buttonj[loc], /set_button
    Endfor
  endif

  xbuttons = widget_base(master, /row, /align_center)
  no_button = widget_button(xbuttons, val = 'Cancel', $
                            uval = 'NO', /align_center)
  yes_button = widget_button(xbuttons, val = 'Accept and Close', $
                             uval = 'YES', /align_center)

  CenterTlb, master 
  widget_control, master, /no_copy 
  widget_control, master, /realize
  xmanager, 'thm_ui_npar_new0', master

  Return
End

Function thm_ui_npar_new, name, init_value, radio_array = radio_array, radio_value = radio_value, $
                          title = title, radio_label = radio_label, $
                          label_xsize = label_xsize, button_xsize = button_xsize
  common thm_ui_npar_new0_private, value_sav

  n = n_elements(name)
  If(n_elements(init_value) Ne n) Then Begin
    dprint, 'Mismatched input'
    Return, ''
  Endif
  value_sav = init_value
  
  if not keyword_set(title) then title=' '

  If keyword_set(radio_array) Then Begin
    value_sav = [[init_value], radio_value]
    thm_ui_npar_new0, name, init_value, radio_array=radio_array, radio_value=radio_value, $
      title = title, radio_label = radio_label, label_xsize = label_xsize, button_xsize = button_xsize
  endif Else Begin
    thm_ui_npar_new0, name, init_value, title=title
  endelse
  
  Return, value_sav
End