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;;; -*- Mode: Lisp; Package: CLIM-INTERNALS -*-

;;;  (c) copyright 2006 by Tim Moore (moore@bricoworks.com)
;;; This library is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU Library General Public
;;; License as published by the Free Software Foundation; either
;;; version 2 of the License, or (at your option) any later version.
;;;
;;; This library is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;; Library General Public License for more details.
;;;
;;; You should have received a copy of the GNU Library General Public
;;; License along with this library; if not, write to the
;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;;; Boston, MA  02111-1307  USA.

;;; Collect all the class definitions in the Spec in one file that is compiled
;;; and loaded early.

(in-package :clim-internals)

(defmacro define-protocol-class (name super-classes &optional slots &rest options)
  (let* ((sym-name (symbol-name name))
	 (protocol-predicate
	  (intern (concatenate 'string
			       sym-name
			       (if (find #\- sym-name) "-" "")
			       (symbol-name '#:p))))
	 (predicate-docstring
	  (concatenate 'string
		       "Protocol predicate checking for class " sym-name)))
    `(progn
       (defclass ,name ,super-classes ,slots ,@options)

       (let ((the-class (find-class ',name)))
	 (setf (documentation the-class 'type) "CLIM protocol class")
         (defmethod initialize-instance :after ((object ,name) &key &allow-other-keys)
           (when (eq (class-of object) the-class)
             (error "~S is a protocol class and thus can't be instantiated" ',name))))

       (defgeneric ,protocol-predicate (object)
	 (:method ((object t))
	   nil)
	 (:method ((object ,name))
	   t)
	 (:documentation ,predicate-docstring))

       ',name)))

;;; 3.1 General Regions
(define-protocol-class bounding-rectangle ())


(define-protocol-class region (design))
(define-protocol-class path (region bounding-rectangle))
(define-protocol-class area (region bounding-rectangle))
(define-protocol-class region-set  (region bounding-rectangle))
(define-protocol-class point (region bounding-rectangle))
(define-protocol-class polyline (path))
(define-protocol-class polygon (area))
(define-protocol-class line (polyline))
(define-protocol-class rectangle (polygon))
(define-protocol-class ellipse (area))
(define-protocol-class elliptical-arc (path))

;;; 5.1 Transformations
(define-protocol-class transformation ())

;;; 7.1 Basic Sheet Classes
(define-protocol-class sheet (bounding-rectangle))

;;; 8.2 Standard Device Events
(define-protocol-class event ()
  ())

;;; 8.3.1 Output Properties

(define-protocol-class medium ()
  ())

;;; 9.2 Ports
(define-protocol-class port ())

;;; 10.3 Line Styles

(define-protocol-class line-style ())

;;; 11.1 Text Styles

(define-protocol-class text-style ()
  ())

;;; 13.2 Basic Designs

(define-protocol-class design ())

;;; 13.3 Color class

(define-protocol-class color (design))

;;; 13.4

(define-protocol-class opacity (design))

;;; 15.2 Extended Output Streams
(define-protocol-class extended-output-stream
    (fundamental-character-output-stream)
  ;; CLIM Specification says that E-O-S is a subclass of
  ;; OUTPUT-STREAM, but it does not says what is it.
  ())

;;; 15.3 The Text Cursor
(define-protocol-class cursor ())

;;; 16.2 Output Records
(define-protocol-class output-record (bounding-rectangle)
  ())

(define-protocol-class displayed-output-record (output-record)
  ())

;;; 16.3.2 Graphics Displayed Output Records
(define-protocol-class graphics-displayed-output-record
    (displayed-output-record)
  ())

;;; 16.3.3 Text Displayed Output Record
(define-protocol-class text-displayed-output-record (displayed-output-record)
  ())

;;; 16.4 Output Recording Streams
(define-protocol-class output-recording-stream ()
  ())

;;; 17.3.1 Table Formatting Protocol
(define-protocol-class table-output-record (output-record))

;;; 17.3.2 Row and Column Formatting Protocol
(define-protocol-class row-output-record (output-record))
(define-protocol-class column-output-record (output-record))

;;; 17.3.3 Cell Formatting Protocol
(define-protocol-class cell-output-record (output-record))

;;; 17.3.4 Item List Formatting Protocol
(define-protocol-class item-list-output-record ()
  ())

;;; 18.2 The Graph Formatting Protocol
(define-protocol-class graph-output-record (output-record))
(define-protocol-class graph-node-output-record (output-record))

;;; 21.3 Incremental Redisplay Protocol
(define-protocol-class updating-output-record (output-record))

;;; 22.2 Extended Input Streams

(define-protocol-class extended-input-stream 
    (fundamental-character-input-stream)
  ())

;;; 22.4 The Pointer Protocol

(define-protocol-class pointer ()
  ())

;;; 23.2 Presentations
(define-protocol-class presentation ())

;;; 23.6 Views
(define-protocol-class view ())

;;; 24.1.1 The Input Editing Stream Protocol
(define-protocol-class input-editing-stream ())

;;; 27.2 Command Tables
(define-protocol-class command-table ()
  ())

;;; 28.2 Application Frames
(define-protocol-class application-frame ()
  ())

;;; 28.5 Frame Managers
;;; XXX The slot definitions shouldn't be here, but there is no
;;; standard-frame-manager and I don't want to add these slots to all the frame
;;; manager classes right now.
(define-protocol-class frame-manager ()
  ((port :initarg :port :reader port)
   (frames :initform nil :reader frame-manager-frames)))

;;; 30.3 Basic Gadget Classes
;;; XXX Slots definitions should be banished.
(define-protocol-class gadget (pane)
  ((id                :initarg :id
                      :initform (gensym "GADGET")
                      :accessor gadget-id)
   (client            :initarg :client
                      :initform *application-frame*
                      :accessor gadget-client)
   (armed-callback    :initarg :armed-callback
                      :initform nil
                      :reader gadget-armed-callback)
   (disarmed-callback :initarg :disarmed-callback
                      :initform nil
                      :reader gadget-disarmed-callback)
   ;; [Arthur] I'm not so sure about the value for :initform.
   ;; Maybe T is better? Or maybe we should call
   ;; ACTIVATE-GADGET after creating a gadget?
   ;;
   ;; I think, T is correct here --GB

   (active-p            :initform t :initarg :active
                        :reader gadget-active-p)
   ;;
   ;; I am not so lucky with the armed slot in GADGET --GB
   (armed               :initform nil)

   ))

;;; C.1 Encapsulating Streams
(define-protocol-class encapsulating-stream ()
  ())