;+
;
; @file_comments
; Like <proidl>DIALOG_MESSAGE</proidl> if there is already some widget
; active or like <proidl>MESSAGE</proidl> if there is not any widget active.
; To ask a question whose answer is not yes/no, use <pro>xquestion</pro>.
;
; @param TEXTIN {in}{required} {type=scalar string or arrays of string}
; If TEXTIN is a scalar string, we look for the line feed character "!C".
; If TEXTIN is set to an array of strings, each
; array element is displayed as a separate line of text.
;
; @keyword SIMPLE
; activate to print only the message without the name
; and the line of the routine (defined by calling <pro>routine_name</pro>)
; or++ 
; Activate to print the error message without printing the routine name with
; its full path.
;
; @keyword PARENT
; same as DIALOG_PARENT of <proidl>DIALOG_MESSAGE</proidl>
;
; @keyword QUESTION {default="Warning"}
; Set this keyword to create a "Question" dialog.
;
; @keyword DEFAULT_NO {default="Yes"}
; Set this keyword to make the "No" button the default selection for
; "Question" dialog.
;
; @keyword _EXTRA
; Used to pass keywords to <proidl>DIALOG_MESSAGE</proidl> and 
; <proidl>MESSAGE</proidl>
;
; @returns
; -1 if the keyword QUESTION is not activated
; If the keyword QUESTION is activated, return 1 for yes and 0 for no.
;
; @examples
; If there is not any widget activated:
;
; IDL> help, report('toto tata')
; % $MAIN$: toto tata
; <Expression>    INT       =       -1
; IDL> help, report('does it works ?',/question)
; does it works ? y/n (default answer is y)
; <Expression>    BYTE      =    1
; IDL> help, report('question1: !C does it works ?',/question)
; question1:
; does it works ? y/n (default answer is y)
; <Expression>    BYTE      =    1
;
; If widgets are already activated, it is the same thing but with widgets!
;
; @history
; Sebastien Masson (smasson\@lodyc.jussieu.fr)
;                      21/10/1999
;
; @version
; $Id$
;
;-
;
FUNCTION report, textin, DEFAULT_NO = default_no, PARENT = parent, QUESTION = question, SIMPLE = simple, _EXTRA = ex
;
  compile_opt idl2, strictarrsubs
;
  res = -1                      ;
; we separate the text in different lines (separated by !C) if it is not already done...
  if n_elements(textin) EQ 1 then text = '% ' + str_sep(textin, '!C', /trim) ELSE text = '% ' + textin
; we get the line, routine name ad revision version
  IF NOT keyword_set(simple) THEN BEGIN
;    Look for the revsion in the code of the procedure/function calling this 
;    report function (ie the one where an problem was detected) in the first
;    occurence of the form :
;    "; $Id$"
    prefix = routine_name(1)
    split = STRSPLIT(prefix, ' ', /EXTRACT)  
    coderoutine = getfile(split[1])
    idline = (where(stregex(coderoutine, '^; \$Id: .* .* .* .* \$', /boolean) EQ 1))[0]
    IF (idline GT 0) THEN BEGIN
      split = STRSPLIT(coderoutine[idline], ' ', /EXTRACT)
      prefix = '% '+prefix+ ' rev. ' + split[3] + ': '
    ENDIF ELSE BEGIN
      prefix = '% '+prefix+': '
    ENDELSE
    text = [prefix, text]
  ENDIF
; there is some widgets activated, it is easy, we call dialog_massage
  if (widget_info(/managed))[0] NE 0 then BEGIN
    res = dialog_message(text, dialog_parent = parent, QUESTION = question $
                         , title = routine_name(1), DEFAULT_NO = default_no, _extra = ex)
    if keyword_set(question) THEN res = res EQ 'Yes' ELSE res = -1
  ENDIF ELSE BEGIN
; there is not any widget activated
; do we ask a question ?
    IF keyword_set(question) THEN BEGIN
; what is the answer by default ?
      if keyword_set(default_no) then answer = 'n' ELSE answer = 'y'
      default_answer = answer
      if n_elements(text) GT 1 THEN $
         for i = 0, n_elements(text)-2 do print, text[i]
      read, text[n_elements(text)-1]+' y/n (default answer is '+default_answer+')', answer
      answer = strlowcase(answer) ;
; if the answer is not appropriated
      while answer NE '' and answer NE 'y' and answer NE 'n' do begin
        read, text[n_elements(text)-1]+' y/n (default answer is '+default_answer+')', answer
        answer = strlowcase(answer)
      ENDWHILE                  ;
; we adjust res in function of the answer
      case answer of
        '':res = default_answer EQ 'y'
        'y':res = 1
        'n':res = 0
      endcase
    ENDIF
  ENDELSE
; If we do not ask any question, we just make a print
  IF NOT keyword_set(question) THEN BEGIN
    FOR i = 0, n_elements(text)-1 do print, text[i]
  ENDIF

  return,  res
end