;;; Commentary:
-;; Purpose of this program is emulating for who does not have
-;; `custom.el'.
+;; Purpose of this program is emulating for who does not have "custom".
+;; (custom.el bundled with v19 is old; does not have following macros.)
+;;
;; DEFCUSTOM below has the same effect as the original DEFVAR has.
-;; DEFGROUP and DEFFACE below are just nop macro.
+;; DEFFACE below interprets almost of all arguments.
+;; DEFGROUP and DEFINE-WIDGET below are just nop macro.
;;; Code:
SYMBOL does not need to be quoted.
Third arg DOC is the group documentation.
-This is a nop defgroup only for emulating purpose.."
- nil )
+This is a nop defgroup only for emulating purpose."
+ nil)
(defmacro-maybe defcustom (symbol value doc &rest args)
"Declare SYMBOL as a customizable variable that defaults to VALUE.
This is a defcustom only for emulating purpose.
Its effect is just as same as that of defvar."
- (` (defvar (, symbol) (, value) (, doc))) )
+ (` (defvar (, symbol) (, value) (, doc))))
-(defmacro-maybe defface (symbol value doc &rest args)
+(defvar-maybe frame-background-mode nil
+ "*The brightness of the background.
+Set this to the symbol dark if your background color is dark, light if
+your background is light, or nil (default) if you want Emacs to
+examine the brightness for you. However, the old Emacsen might not
+examine the brightness, so you should set this value definitely.")
+
+(defmacro-maybe-cond defface (face spec doc &rest args)
"Declare FACE as a customizable face that defaults to SPEC.
FACE does not need to be quoted.
-This is a nop defface only for emulating purpose."
- nil )
+Third argument DOC is the face documentation, it is ignored.
+
+It does nothing if FACE has been bound, otherwise set the face
+attributes according to SPEC.
+
+The remaining arguments should have the form
+
+ [KEYWORD VALUE]...
+
+The following KEYWORDs are defined:
+
+:group VALUE should be a customization group, but it is ignored.
+
+SPEC should be an alist of the form ((DISPLAY ATTS)...).
+
+ATTS is of the form (KEY VALUE) where KEY is a symbol of `:foreground',
+`:background', `:bold', `:italic' or `:underline'. The other KEYs are
+ignored.
+
+The ATTS of the first entry in SPEC where the DISPLAY matches the
+frame should take effect in that frame. DISPLAY can either be the
+symbol t, which will match all frames, or an alist of the form
+\((REQ ITEM...)...)
+
+For the DISPLAY to match a FRAME, the REQ property of the frame must
+match one of the ITEM. The following REQ are defined:
+
+`type' (the value of `window-system')
+ Should be one of `x' or `tty'.
+
+`class' (the frame's color support)
+ Should be one of `color', `grayscale', or `mono'.
+
+`background' (the value of `frame-background-mode', what color is used
+for the background text)
+ Should be one of `light' or `dark'.
+
+\[custom emulating macro]"
+ ((fboundp 'make-face)
+ (` (let ((name (quote (, face))))
+ (or
+ (find-face name)
+ (let ((face (make-face name))
+ (spec (, spec))
+ (colorp (and window-system (x-display-color-p)))
+ display atts req item match done)
+ (while (and spec (not done))
+ (setq display (car (car spec))
+ atts (car (cdr (car spec)))
+ spec (cdr spec))
+ (cond
+ ((consp display)
+ (setq match t)
+ (while (and display match)
+ (setq req (car (car display))
+ item (car (cdr (car display)))
+ display (cdr display))
+ (cond
+ ((eq 'type req)
+ (setq match (or (eq window-system item)
+ (and (not window-system)
+ (eq 'tty item)))))
+ ((eq 'class req)
+ (setq match (or (and colorp (eq 'color item))
+ (and (not colorp)
+ (memq item '(grayscale mono))))))
+ ((eq 'background req)
+ (setq match (eq frame-background-mode item)))))
+ (setq done match))
+ ((eq t display)
+ (setq done t))))
+ (if done
+ (let ((alist '((:foreground . set-face-foreground)
+ (:background . set-face-background)
+ (:bold . set-face-bold-p)
+ (:italic . set-face-italic-p)
+ (:underline . set-face-underline-p)))
+ function)
+ (while atts
+ (if (setq function (cdr (assq (car atts) alist)))
+ (funcall function face (car (cdr atts))))
+ (setq atts (cdr (cdr atts))))))
+ face)))))
+ (t
+ nil ;; do nothing.
+ ))
+
+(defmacro-maybe define-widget (name class doc &rest args)
+ "Define a new widget type named NAME from CLASS.
+The third argument DOC is a documentation string for the widget.
+
+This is a nop define-widget only for emulating purpose."
+ nil)
(provide 'tinycustom)
(provide 'custom)
-;; end of tinycustom.el
+;;; tinycustom.el ends here.
projects / elisp / apel.git / blobdiff