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|
;;;;
;;;; objects.lsp XLISP-STAT additional objects and object functions
;;;; XLISP-STAT 2.1 Copyright (c) 1990, by Luke Tierney
;;;; Additions to Xlisp 2.1, Copyright (c) 1989 by David Michael Betz
;;;; You may give out copies of this software; for conditions see the file
;;;; COPYING included with this distribution.
;;;;
(in-package "XLISP")
(provide "objects")
;;**** check over exports
(export '(edit-text-item-proto modal-dialog-proto modal-button-proto dash-item-proto))
(defsetf slot-value slot-value)
(defmeth *object* :new (&rest args)
"Method args: (&rest args)
Creates new object using self as prototype."
(let* ((object (make-object self)))
(if (slot-value 'instance-slots)
(dolist (s (slot-value 'instance-slots))
(send object :add-slot s (slot-value s))))
(apply #'send object :isnew args)
object))
(defmeth *object* :retype (proto &rest args)
"Method args: (proto &rest args)
Changes object to inherit directly from prototype PROTO. PROTO
must be a prototype and SELF must not be one."
(if (send self :has-slot 'instance-slots :own t)
(error "can't retype a prototype"))
(if (not (send proto :has-slot 'instance-slots :own t))
(error "not a prototype - ~a" proto))
(send self :reparent proto)
(dolist (s (send proto :slot-value 'instance-slots))
(send self :add-slot s (slot-value s)))
(apply #'send self :isnew args)
self)
(defmeth *object* :print (&optional (stream *standard-output*))
"Method args: (&optional (stream *standard-output*))
Default object printing method."
(when *print-readably*
(if (send self :has-method :save)
(format stream "#.~s" (send self :save))
(error "default :PRINT output is not readable")))
(cond
((send self :has-slot 'proto-name)
(format stream
"#<Object: ~D, prototype = ~A>"
(address-of self)
(slot-value 'proto-name)))
(t (format stream "#<Object: ~D>" (address-of self)))))
(defmeth *object* :slot-value (sym &optional (val nil set))
"Method args: (sym &optional val)
Sets and retrieves value of slot named SYM. Sugnals an error if slot
does not exist."
(if set (setf (slot-value sym) val))
(slot-value sym))
(defmeth *object* :slot-names ()
"Method args: ()
Returns list of slots available to the object."
(apply #'append
(mapcar #'(lambda (x) (send x :own-slots))
(send self :precedence-list))))
(defmeth *object* :method-selectors ()
"Method args: ()
Returns list of method selectors available to object."
(apply #'append
(mapcar #'(lambda (x) (send x :own-methods))
(send self :precedence-list))))
;;;;
;;;; More Hardware Object Methods
;;;;
(defmeth hardware-object-proto :remove () (send self :dispose))
(defmeth hardware-object-proto :allocated-p () (slot-value 'hardware-address))
(defmeth hardware-object-proto :add-subordinate (d)
(setf (slot-value 'subordinates) (adjoin d (slot-value 'subordinates))))
(defmeth hardware-object-proto :delete-subordinate (d)
(setf (slot-value 'subordinates) (remove d (slot-value 'subordinates))))
(defmeth hardware-object-proto :clobber ()
(if (slot-value 'subordinates)
(dolist (i (slot-value 'subordinates)) (send i :remove))))
#+macintosh
(progn
(export 'display-window-proto)
;; DISPLAY-WINDOW-PROTO
(defproto display-window-proto '() '() edit-window-proto)
(defmeth display-window-proto :isnew (&rest args)
(apply #'call-next-method args)
(setf (slot-value 'input-enabled) nil)))
(export 'active-windows)
(defun active-windows ()
"Args: ()
Returns list of active windows."
(remove-if-not #'(lambda (x) (kind-of-p x window-proto))
(mapcar #'third *hardware-objects*)))
;;;;
;;;; More Dialogs and Menu Items
;;;;
(send dialog-proto :slot-value 'type 'modeless)
(send dialog-proto :slot-value 'go-away t)
(defmeth dialog-proto :items () (slot-value 'items))
(defmeth dialog-item-proto :dialog () (slot-value 'dialog))
(defproto edit-text-item-proto () () text-item-proto)
(send edit-text-item-proto :slot-value 'editable t)
;;; MODAL-DIALOG-PROTO
(defproto modal-dialog-proto '(modal-throw-target) () dialog-proto)
(send modal-dialog-proto :slot-value 'type 'modal)
(send modal-dialog-proto :slot-value 'go-away nil)
(defmeth modal-dialog-proto :modal-dialog (&optional (remove t))
"Metod args: (&optional (remove t))
Runs the modal dialog loop until the :modal-dialog-return message
is sent. Returns the argument to :modal-dialog-return. If REMOVE
is not NIL, dialog is sent the :remove message before returning."
(let ((target self))
(unless (slot-value 'modal-throw-target)
(setf (slot-value 'modal-throw-target) target)
(send self :show-window)
(unwind-protect (catch target
(loop (send (call-next-method) :do-action)))
(setf (slot-value 'modal-throw-target) nil)
(if remove (send self :remove))))))
(defmeth modal-dialog-proto :modal-dialog-return (value)
"Method Args: (value)
Ends modal dialog loop and has :modal-dialog return VALUE."
(let ((target (slot-value 'modal-throw-target)))
(if target (throw target value))))
;;; MODAL-BUTTON-PROTO
(defproto modal-button-proto '() () button-item-proto)
(defmeth modal-button-proto :do-action ()
(let ((action (slot-value 'action))
(dialog (slot-value 'dialog)))
(if dialog
(send dialog :modal-dialog-return (if action (funcall action))))))
;; DASH-ITEM-PROTO. Disabled line item for separation
(defproto dash-item-proto () () menu-item-proto "Disabled separator line")
(defmeth dash-item-proto :isnew () (call-next-method "-" :enabled nil))
(defmeth menu-item-proto :menu ()
"Method args: ()
Returns menu if item is installed, NIL otherwise."
(slot-value 'menu))
(defmeth menu-proto :print (&optional (stream t))
(format stream "#<Object: ~d, prototype = ~a, title = ~s>"
(address-of self)
(slot-value 'proto-name)
(slot-value 'title)))
(defmeth menu-item-proto :print (&optional stream)
(format stream "#<Object: ~d, prototype = ~a, title = ~s>"
(address-of self)
(slot-value 'proto-name)
(slot-value 'title)))
(defmeth graph-window-proto :erase-window ()
"Method args: ()
Erases the entire window canvas."
(let ((w (send self :canvas-width))
(h (send self :canvas-height)))
(send self :erase-rect 0 0 w h)))
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