;;; custom.el --- tools for declaring and initializing options
;;
-;; Copyright (C) 1996-1997, 1999, 2001-2013 Free Software Foundation,
+;; Copyright (C) 1996-1997, 1999, 2001-2014 Free Software Foundation,
;; Inc.
;;
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
-;; Maintainer: FSF
+;; Maintainer: emacs-devel@gnu.org
;; Keywords: help, faces
;; Package: emacs
;;; The `defcustom' Macro.
-(defun custom-initialize-default (symbol value)
- "Initialize SYMBOL with VALUE.
+(defun custom-initialize-default (symbol exp)
+ "Initialize SYMBOL with EXP.
This will do nothing if symbol already has a default binding.
Otherwise, if symbol has a `saved-value' property, it will evaluate
the car of that and use it as the default binding for symbol.
-Otherwise, VALUE will be evaluated and used as the default binding for
+Otherwise, EXP will be evaluated and used as the default binding for
symbol."
- (eval `(defvar ,symbol ,(if (get symbol 'saved-value)
- (car (get symbol 'saved-value))
- value))))
+ (eval `(defvar ,symbol ,(let ((sv (get symbol 'saved-value)))
+ (if sv (car sv) exp)))))
-(defun custom-initialize-set (symbol value)
- "Initialize SYMBOL based on VALUE.
+(defun custom-initialize-set (symbol exp)
+ "Initialize SYMBOL based on EXP.
If the symbol doesn't have a default binding already,
then set it using its `:set' function (or `set-default' if it has none).
The value is either the value in the symbol's `saved-value' property,
-if any, or VALUE."
- (unless (default-boundp symbol)
- (funcall (or (get symbol 'custom-set) 'set-default)
- symbol
- (eval (if (get symbol 'saved-value)
- (car (get symbol 'saved-value))
- value)))))
-
-(defun custom-initialize-reset (symbol value)
- "Initialize SYMBOL based on VALUE.
+if any, or the value of EXP."
+ (condition-case nil
+ (default-toplevel-value symbol)
+ (error
+ (funcall (or (get symbol 'custom-set) #'set-default-toplevel-value)
+ symbol
+ (eval (let ((sv (get symbol 'saved-value)))
+ (if sv (car sv) exp)))))))
+
+(defun custom-initialize-reset (symbol exp)
+ "Initialize SYMBOL based on EXP.
Set the symbol, using its `:set' function (or `set-default' if it has none).
The value is either the symbol's current value
- \(as obtained using the `:get' function), if any,
+ (as obtained using the `:get' function), if any,
or the value in the symbol's `saved-value' property if any,
-or (last of all) VALUE."
- (funcall (or (get symbol 'custom-set) 'set-default)
+or (last of all) the value of EXP."
+ (funcall (or (get symbol 'custom-set) #'set-default-toplevel-value)
symbol
- (cond ((default-boundp symbol)
- (funcall (or (get symbol 'custom-get) 'default-value)
- symbol))
- ((get symbol 'saved-value)
- (eval (car (get symbol 'saved-value))))
- (t
- (eval value)))))
-
-(defun custom-initialize-changed (symbol value)
- "Initialize SYMBOL with VALUE.
+ (condition-case nil
+ (let ((def (default-toplevel-value symbol))
+ (getter (get symbol 'custom-get)))
+ (if getter (funcall getter symbol) def))
+ (error
+ (eval (let ((sv (get symbol 'saved-value)))
+ (if sv (car sv) exp)))))))
+
+(defun custom-initialize-changed (symbol exp)
+ "Initialize SYMBOL with EXP.
Like `custom-initialize-reset', but only use the `:set' function if
not using the standard setting.
For the standard setting, use `set-default'."
- (cond ((default-boundp symbol)
- (funcall (or (get symbol 'custom-set) 'set-default)
- symbol
- (funcall (or (get symbol 'custom-get) 'default-value)
- symbol)))
- ((get symbol 'saved-value)
- (funcall (or (get symbol 'custom-set) 'set-default)
- symbol
- (eval (car (get symbol 'saved-value)))))
- (t
- (set-default symbol (eval value)))))
+ (condition-case nil
+ (let ((def (default-toplevel-value symbol)))
+ (funcall (or (get symbol 'custom-set) #'set-default-toplevel-value)
+ symbol
+ (let ((getter (get symbol 'custom-get)))
+ (if getter (funcall getter symbol) def))))
+ (error
+ (cond
+ ((get symbol 'saved-value)
+ (funcall (or (get symbol 'custom-set) #'set-default-toplevel-value)
+ symbol
+ (eval (car (get symbol 'saved-value)))))
+ (t
+ (set-default symbol (eval exp)))))))
(defvar custom-delayed-init-variables nil
"List of variables whose initialization is pending.")
given in the `defcustom' call. The default is
`custom-initialize-reset'.
:set VALUE should be a function to set the value of the symbol
- when using the Customize user interface.
- It takes two arguments, the symbol to set and the value to
- give it. The default choice of function is `set-default'.
+ when using the Customize user interface. It takes two arguments,
+ the symbol to set and the value to give it. The function should
+ not modify its value argument destructively. The default choice
+ of function is `set-default'.
:get VALUE should be a function to extract the value of symbol.
The function takes one argument, a symbol, and should return
the current value for that symbol. The default choice of function
binding. This is normally not what you want. Thus, if you need
to load a file defining variables with this form, or with
`defvar' or `defconst', you should always load that file
-_outside_ any bindings for these variables. \(`defvar' and
+_outside_ any bindings for these variables. (`defvar' and
`defconst' behave similarly in this respect.)
See Info node `(elisp) Customization' in the Emacs Lisp manual
Third argument DOC is the face documentation.
-If FACE has been set with `custom-set-faces', set the face
+If FACE has been set with `custom-theme-set-faces', set the face
attributes as specified by that function, otherwise set the face
attributes according to SPEC.
For a list of valid keywords, see the common keywords listed in
`defcustom'.
-SPEC should be an alist of the form
+SPEC should be a \"face spec\", i.e., an alist of the form
((DISPLAY . ATTS)...)
(defun custom-add-dependencies (symbol value)
"To the custom option SYMBOL, add dependencies specified by VALUE.
VALUE should be a list of symbols. For each symbol in that list,
-this specifies that SYMBOL should be set after the specified symbol, if
-both appear in constructs like `custom-set-variables'."
+this specifies that SYMBOL should be set after the specified symbol,
+if both appear in constructs like `custom-set-variables'."
(unless (listp value)
(error "Invalid custom dependency `%s'" value))
(let* ((deps (get symbol 'custom-dependencies))
(found nil))
(dolist (loaded load-history)
(and (stringp (car loaded))
- (string-match regexp (car loaded))
+ (string-match-p regexp (car loaded))
(setq found t)))
found))
;; Without this, we would load cus-edit recursively.
(setcar (cdr setting) value)))
;; Add a new setting:
(t
- (unless old
- ;; If the user changed a variable outside of Customize, save
- ;; the value to a fake theme, `changed'. If the theme is
- ;; later disabled, we use this to bring back the old value.
- ;;
- ;; For faces, we just use `face-new-frame-defaults' to
- ;; recompute when the theme is disabled.
- (when (and (eq prop 'theme-value)
- (boundp symbol))
- (let ((sv (get symbol 'standard-value))
- (val (symbol-value symbol)))
- (unless (and sv (equal (eval (car sv)) val))
- (setq old `((changed ,(custom-quote val))))))))
- (put symbol prop (cons (list theme value) old))
+ (unless custom--inhibit-theme-enable
+ (unless old
+ ;; If the user changed a variable outside of Customize, save
+ ;; the value to a fake theme, `changed'. If the theme is
+ ;; later disabled, we use this to bring back the old value.
+ ;;
+ ;; For faces, we just use `face-new-frame-defaults' to
+ ;; recompute when the theme is disabled.
+ (when (and (eq prop 'theme-value)
+ (boundp symbol))
+ (let ((sv (get symbol 'standard-value))
+ (val (symbol-value symbol)))
+ (unless (and sv (equal (eval (car sv)) val))
+ (setq old `((changed ,(custom-quote val))))))))
+ (put symbol prop (cons (list theme value) old)))
(put theme 'theme-settings
(cons (list prop symbol theme value) theme-settings))))))
evaluates to the customized value. EXP will also be stored,
without evaluating it, in SYMBOL's `saved-value' property, so
that it can be restored via the Customize interface. It is also
-added to the alist in SYMBOL's `theme-value' property \(by
+added to the alist in SYMBOL's `theme-value' property (by
calling `custom-push-theme').
NOW, if present and non-nil, means to install the variable's
(eq name 'changed)))))
(defun custom-available-themes ()
- "Return a list of available Custom themes (symbols)."
+ "Return a list of Custom themes available for loading.
+Search the directories specified by `custom-theme-load-path' for
+files named FOO-theme.el, and return a list of FOO symbols.
+
+The returned symbols may not correspond to themes that have been
+loaded, and no effort is made to check that the files contain
+valid Custom themes. For a list of loaded themes, check the
+variable `custom-known-themes'."
(let (sym themes)
(dolist (dir (custom-theme--load-path))
(when (file-directory-p dir)
(setq custom-enabled-themes
(delq theme custom-enabled-themes)))))
+;; Only used if window-system not null.
+(declare-function x-get-resource "frame.c"
+ (attribute class &optional component subclass))
+
(defun custom--frame-color-default (frame attribute resource-attr resource-class
tty-default x-default)
(let ((col (face-attribute 'default attribute t)))
(eval (car valspec))))))
(defun custom-theme-recalc-face (face)
- "Set FACE according to currently enabled custom themes."
+ "Set FACE according to currently enabled custom themes.
+If FACE is not initialized as a face, do nothing; otherwise call
+`face-spec-recalc' to recalculate the face on all frames."
(if (get face 'face-alias)
(setq face (get face 'face-alias)))
- ;; Reset the faces for each frame.
- (dolist (frame (frame-list))
- (face-spec-recalc face frame)))
+ (if (facep face)
+ ;; Reset the faces for each frame.
+ (dolist (frame (frame-list))
+ (face-spec-recalc face frame))))
\f
;;; XEmacs compatibility functions
;;; The End.
-;; Process the defcustoms for variables loaded before this file.
-(while custom-declare-variable-list
- (apply 'custom-declare-variable (car custom-declare-variable-list))
- (setq custom-declare-variable-list (cdr custom-declare-variable-list)))
-
(provide 'custom)
;;; custom.el ends here
HCoop / bpt / emacs.git / blobdiff