;;;;
;;;; M s g b o x . s t k l o s  	  --  Various Messsage boxes classes
;;;;
;;;; Copyright © 1996-1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;;; 
;;;; Permission to use, copy, and/or distribute this software and its
;;;; documentation for any purpose and without fee is hereby granted, provided
;;;; that both the above copyright notice and this permission notice appear in
;;;; all copies and derived works.  Fees for distribution or use of this
;;;; software or derived works may only be charged with express written
;;;; permission of the copyright holder.  
;;;; This software is provided ``as is'' without express or implied warranty.
;;;;
;;;; $Id: Msgbox.stklos 1.3 Wed, 04 Feb 1998 10:34:59 +0000 eg $
;;;;
;;;;           Author: Erick Gallesio [eg@unice.fr]
;;;;    Creation date: 29-Aug-1997 21:06
;;;; Last file update:  4-Feb-1998 10:33

(require "image")
(require "Basics")

(select-module STklos+Tk)

;;;;
;;;; Utilities
;;;;

(define msgbox-button #f)

(define (msgbox-create-button  name parent box)
  (make <Button> :parent parent 
	         :text   name 
		 :width  6
		 :command (lambda ()
			    (set! msgbox-button 
				  (string->symbol (string-lower name)))
			    (destroy box))))

(define msgbox-default-image (make-image "error"))

;=============================================================================
;
;			< T k - m e s s a g e - b o x >
;
;
; This class is not intended for the user. It is in fact the ancestor of
; the class defined below.
;=============================================================================

;;;;
;;;; Resources
;;;;
(option 'add "*MessageBox*icon.Image" 	msgbox-default-image  "widgetDefault")
(option 'add "*MessageBox*msg.Font"     '(Helvetica -16 bold) "widgetDefault")
(option 'add "*MessageBox*msg.Aspect"   1000                  "widgetDefault")

;;;;
;;;;  Class definition
;;;;

(define-class <Tk-message-box> (<Tk-composite-toplevel> <Message>)
  (icon msg
   (class 	    :init-keyword :class
		    :init-form    "MessageBox")
   (default-button  :accessor     default-button 
     		    :init-keyword :default-button)
   ;; fictive slots
   (font            :accesssor     font
		    :init-keyword :font
		    :allocation	  :propagated
		    :propagate-to (msg))
   (bitmap 	    :accessor 	   bitmap
		    :init-keyword :bitmap
		    :allocation	  :propagated
		    :propagate-to (icon))))

(define-method initialize-composite-widget ((self <Tk-message-box>) initargs frame)
  (let* ((top  (make <Frame>   :parent frame :relief "raised" :border-width 1))
	 (bot  (make <Frame>   :parent frame :relief "raised" :border-width 1))
	 (icon (make <Label>   :parent top :Id 'icon))
	 (msg  (make <Message> :parent top :anchor 'w :Id 'msg :justify 'left)))

    (next-method)

    ;; Top window
    (pack icon :side 'left  :padx '5m :pady '5m :expand #f :fill "both")
    (pack msg  :side 'right :padx '3m :pady '3m :expand #t :fill "both")
    (pack top  :side 'top :fill 'both :expand #t)

    ;; Bottom window
    (initialize-message-box-buttons self bot frame)
    (pack bot :side 'bottom :fill 'x :expand #f)

    ;; True slots initialization
    (slot-set! self 'Id    (slot-ref msg 'Id))
    (slot-set! self 'icon  icon)
    (slot-set! self 'msg   msg)))

(define-method initialize-message-box-buttons((self <Tk-composite-widget>)frame box)
  (error "initialize-message-box-button: ~S must be a subclass of <Tk-message-box>"
	 self))

;=============================================================================
;
; 	    < A b o r t - r e t r y - i g n o r e - m e s s a g e - b o x > 
;
;=============================================================================

(define-class <Abort-retry-ignore-message-box> (<Tk-message-box>)
  ())

(define-method initialize-message-box-buttons
  			((self <Abort-retry-ignore-message-box>) frame box)
  (let ((abt (msgbox-create-button "Abort"  frame box))
	(rty (msgbox-create-button "Retry"  frame box))
	(ign (msgbox-create-button "Ignore" frame box)))
    (pack abt rty ign :side 'left :expand #t :padx '3m :pady '2m)))

;=============================================================================
;
; 			< O k - m e s s a g e - b o x >
;
;=============================================================================
(define-class <Ok-message-box> (<Tk-message-box>)
  ())

(define-method initialize-message-box-buttons((self <Ok-message-box>) frame box)
  (let ((ok (msgbox-create-button "Ok" frame box)))
    (pack ok :side 'left :expand #t :padx '3m :pady '2m)))

;=============================================================================
;
; 		< O k - c a n c e l - m e s s a g e - b o x >
;
;=============================================================================
(define-class <Ok-cancel-message-box> (<Tk-message-box>)
  ())

(define-method initialize-message-box-buttons
  			((self <Ok-cancel-message-box>) frame box)
  (let ((ok  (msgbox-create-button "Ok"     frame box))
	(cnl (msgbox-create-button "Cancel" frame box)))

    (pack ok cnl :side 'left :expand #t :padx '3m :pady '2m)))

;=============================================================================
;
; 	   < R e t r y - c a n c e l - m e s s a g e - b o x >
;
;=============================================================================
(define-class <Retry-cancel-message-box> (<Tk-message-box>)
  ())

(define-method initialize-message-box-buttons
                           ((self <Retry-cancel-message-box>) frame box)
  (let ((rty (msgbox-create-button "Retry"  frame box))
	(cnl (msgbox-create-button "Cancel" frame box)))

    (pack rty cnl :side 'left :expand #t :padx '3m :pady '2m)))

;=============================================================================
;
;  		    < Y e s - n o - m e s s a g e - b o x > 
;
;=============================================================================
(define-class <Yes-no-message-box> (<Tk-message-box>)
  ())

(define-method initialize-message-box-buttons((self <Yes-no-message-box>) frame box)
  (let ((yes (msgbox-create-button "Yes" frame box))
	(no  (msgbox-create-button "No"  frame box)))

    (pack yes no :side 'left :expand #t :padx '3m :pady '2m)))

;=============================================================================
;
; 		< Y e s - n o - c a n c e l - m e s s a g e - b o x >
;
;=============================================================================
(define-class <Yes-no-cancel-message-box> (<Tk-message-box>)
  ())

(define-method initialize-message-box-buttons
                                ((self <Yes-no-cancel-message-box>) frame box)
  (let ((yes (msgbox-create-button "Yes"    frame box))
	(no  (msgbox-create-button "No"     frame box))
	(cnl (msgbox-create-button "Cancel" frame box)))

    (pack yes no cnl :side 'left :expand #t :padx '3m :pady '2m)))


;=============================================================================
;
; Tk:message-box (for Unix)
;
;=============================================================================

(when (eqv? (os-kind) 'Unix)

  (define (Tk:message-box . l)
    (let* ((default (get-keyword :default l ""))
	   (icon    (get-keyword :icon    l #f))
	   (text    (get-keyword :text    l ""))
	   (title   (get-keyword :title   l ""))
	   (class   (case (get-keyword :type  l 'ok)
		      ((abortretryignore) <Abort-retry-ignore-message-box>)
		      ((okcancel)	  <Ok-cancel-message-box>)
		      ((retrycancel)	  <Retry-cancel-message-box>)
		      ((yesno)		  <Yes-no-message-box>)
		      ((yesnocancel)	  <Yes-no-cancel-message-box>)
		      (else		  <Ok-message-box>)))
	   (box     (make class :text text :title title)))
      
      ;; Default
      ;/////// must be done ////////
      
      ;; Icon 
      (if icon (set! (icon box) (make-image icon)))
           
      (let ((old-grab (grab 'current box)))
	(tkwait 'visibility box)
	(grab 'set box)
	(tkwait 'window box)
	(and old-grab (grab 'set old-grab))
	msgbox-button)))
)

(provide "MsgBox")