;;;;
;;;; T k - m e t a . s t k 		--  Metaclasses definitions
;;;;
;;;; Copyright © 1993-1998 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: Tk-meta.stklos 1.8 Fri, 10 Apr 1998 07:13:18 +0000 eg $
;;;;
;;;;           Author: Erick Gallesio [eg@unice.fr]
;;;;    Creation date: 24-Feb-1994 15:08
;;;; Last file update:  6-Apr-1998 10:03
;;;;
;;;;
;;;; Compatibility:
;;;; 	- the :pseudo allocation is now replaced by :tk-virtual (Rob DeLine
;;;;	  proposition). However both name are accepted. Avoid to use :pseudo
;;;;	  since it will disappear in the future.
;;;;
;;;;	- the :special allocation is now replaced by :propagated (Rob DeLine
;;;;	  proposition). However both name are accepted. Avoid to use :special
;;;;	  since it will disappear in the future.
;;;;
;;;;	- the :propagate option for propagated slots is now replaced by 
;;;;	  :propagate-to. Avoid to use :propagate since it will disappear in
;;;;	  the future.

(require "stklos")

;;;;
;;;; Stuff for declaring the new module STklos+Tk and import it in STk
;;;; Note that the module Tk, is also defined here. This is useless, except 
;;;; when making  images (i.e. probably the -no-window option has been used,
;;;; avoiding the Tk initialization, and hence the Tk module definition)

(define-module Tk)				; See comment above
(define-module STklos+Tk  (import STklos Tk))	; Define module STklos+Tk
(with-module STk	  (import STklos+Tk))	; Import STklos+Tk in STk
(select-module STklos+Tk)			; Rest of this file belongs 
						; to STklos+Tk module

;;;;
;;;; Metaclases exported by this file 
;;;;
(export 
    <With-Tk-virtual-slots-metaclass> <Tk-metaclass> <Tk-item-metaclass>
    <Tk-tag-metaclass> <Tk-text-window-metaclass> <Tk-composite-metaclass>
    <Tk-composite-item-metaclass>)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <With-Tk-virtual-slots-metaclass> class
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Define Tk slots getters and setters. In fact this metaclass permits 
;; a direct mapping of STklos slots to the Tk-library widget options.
;; For instance, a <Label> has a slot called "text". Accessing this slot
;; will call a Tk (C) library function 
;;     (xxxx 'cget 'text)		for reading
;; or
;;     (xxxx 'configure 'text value)	for writing
;; where xxxx is an internal name generated during instance creation).
;;
;; Furthermore, Tk widgets define a lot of accessors and exporting
;; them individually can be boring. Consequently, when such a class is
;; initiaized, we export it and all its direct accessor methods


(define-class <With-Tk-virtual-slots-metaclass> (<class>)
  ())

(define-method initialize ((class <With-Tk-virtual-slots-metaclass>) initargs)
  (next-method)
  (let ((module (%get-module (class-environment class))))
    ;; export the class
    (export-symbol (class-name class) module)
    ;; export its accessors
    (for-each (lambda (method)
		(if (is-a? method <accessor-method>)
		    (export-symbol (generic-function-name
				    (method-generic-function method))
				   module)))
	      (class-direct-methods class))))

(define-method compute-get-n-set ((class <With-Tk-virtual-slots-metaclass>) slot)
  (if (memv (slot-definition-allocation slot) '(:tk-virtual :pseudo))
      [let ((tk-name (make-keyword (get-keyword :tk-name (cdr slot) (car slot)))))
	(compute-tk-virtual-get-n-set class tk-name)]
      [next-method]))


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <Tk-metaclass> metaclass
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(define-class <Tk-metaclass> (<With-Tk-virtual-slots-metaclass>)
  ())

(define-method compute-tk-virtual-get-n-set ((class <Tk-metaclass>) tk-name)
  (list
   (lambda (o)   ((slot-ref o 'Id) 'cget tk-name))
   (lambda (o v) ([slot-ref o 'Id] 'configure tk-name v))))


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <Tk-item-metaclass> metaclass
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(define-class <Tk-item-metaclass> (<With-Tk-virtual-slots-metaclass>)
  ())

(define-method compute-tk-virtual-get-n-set ((class <Tk-item-metaclass>) tk-name)
  (list
   (lambda (o)
     ((slot-ref o 'Id) 'itemcget (slot-ref o 'Cid) tk-name))
   (lambda (o v)
     ((slot-ref o 'Id) 'itemconf (slot-ref o 'Cid) tk-name v))))


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <Tk-tag-metaclass> metaclass
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(define-class <Tk-tag-metaclass> (<With-Tk-virtual-slots-metaclass>)
  ())

(define-method compute-tk-virtual-get-n-set ((class <Tk-tag-metaclass>) tk-name)
  (list
   (lambda (o)
     ((slot-ref o 'Id) 'tag 'cget (slot-ref o 'Tid) tk-name))
   (lambda (o v)
     ((slot-ref o 'Id) 'tag 'configure (slot-ref o 'Tid) tk-name v))))


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <Tk-text-inset-metaclass> metaclass
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(define-class <Tk-text-inset-metaclass> (<With-Tk-virtual-slots-metaclass>)
  ())

(define-method compute-tk-virtual-get-n-set ((class <Tk-text-inset-metaclass>) 
					     tk-name)
  (list
   (lambda (o)
     (if (slot-bound? o 'Iid)
	 ((slot-ref o 'Id) (slot-ref o 'kind) 'cget (slot-ref o 'Iid) tk-name)
	 (make-unbound)))
   (lambda (o v)
     (if (slot-bound? o 'Iid)
	 ((slot-ref o 'Id) (slot-ref o 'kind) 'configure (slot-ref o 'Iid) 
			   tk-name v)))))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <Tk-composite-metaclass> metaclass
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(define-class <Tk-composite-metaclass> (<Tk-metaclass> <Composite-metaclass>)
  ())

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;
;;;; <Tk-composite-item-metaclass> metaclass
;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(define-class <Tk-composite-item-metaclass> (<Tk-item-metaclass> 
					     <Composite-metaclass>)
  ())

(provide "Tk-meta")