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|
;;; helm-misc.el --- Various functions for helm -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2025 Thierry Volpiatto
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program 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 General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(require 'cl-lib)
(require 'helm)
(require 'helm-help)
(require 'helm-types)
(declare-function display-time-world-display "time.el")
(defvar display-time-world-list)
(declare-function LaTeX-math-mode "ext:latex.el")
(declare-function jabber-chat-with "ext:jabber.el")
(declare-function jabber-read-account "ext:jabber.el")
(declare-function helm-comp-read "helm-mode")
(declare-function outline-back-to-heading "outline.el")
(declare-function outline-end-of-heading "outline.el")
(declare-function helm-goto-char "helm-utils")
(declare-function helm-highlight-current-line "helm-utils")
(defgroup helm-misc nil
"Various Applications and libraries for Helm."
:group 'helm)
(defcustom helm-time-zone-home-location "Paris"
"The time zone of your home."
:group 'helm-misc
:type 'string)
(defcustom helm-timezone-actions
`(("Set timezone env (TZ)" . ,(lambda (candidate)
(setenv "TZ" candidate))))
"Actions for helm-timezone."
:group 'helm-misc
:type '(alist :key-type string :value-type function))
(defface helm-time-zone-current
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
:foreground "green"))
"Face used to colorize current time in `helm-world-time'."
:group 'helm-misc)
(defface helm-time-zone-home
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
:foreground "red"))
"Face used to colorize home time in `helm-world-time'."
:group 'helm-misc)
;;; Latex completion
;;
;; Test
;; (setq LaTeX-math-menu '("Math"
;; ["foo" val0 t]
;; ("bar"
;; ["baz" val1 t])
;; ("aze"
;; ["zer" val2 t])
;; ("AMS"
;; ("rec"
;; ["fer" val3 t])
;; ("rty"
;; ["der" val4 t]))
;; ("ABC"
;; ("xcv"
;; ["sdf" val5 t])
;; ("dfg"
;; ["fgh" val6 t]))))
;; (helm-latex-math-candidates)
;; =>
;; (("foo" . val0)
;; ("baz" . val1)
;; ("zer" . val2)
;; ("fer" . val3)
;; ("der" . val4)
;; ("sdf" . val5)
;; ("fgh" . val6))
(defvar LaTeX-math-menu)
(defun helm-latex-math-candidates ()
(cl-labels ((helm-latex--math-collect (L)
(cond ((vectorp L)
(list (cons (aref L 0) (aref L 1))))
((listp L)
(cl-loop for a in L nconc
(helm-latex--math-collect a))))))
(helm-latex--math-collect LaTeX-math-menu)))
(defvar helm-source-latex-math
(helm-build-sync-source "Latex Math Menu"
:init (lambda ()
(with-helm-current-buffer
(LaTeX-math-mode 1)))
:candidate-number-limit 9999
:candidates 'helm-latex-math-candidates
:action (lambda (candidate)
(call-interactively candidate))))
;;; Jabber Contacts (jabber.el)
(defun helm-jabber-online-contacts ()
"List online Jabber contacts."
(with-no-warnings
(cl-loop for item in (jabber-concat-rosters)
when (get item 'connected)
collect
(if (get item 'name)
(cons (get item 'name) item)
(cons (symbol-name item) item)))))
(defvar helm-source-jabber-contacts
(helm-build-sync-source "Jabber Contacts"
:init (lambda () (require 'jabber))
:candidates (lambda () (mapcar 'car (helm-jabber-online-contacts)))
:action (lambda (x)
(jabber-chat-with
(jabber-read-account)
(symbol-name
(cdr (assoc x (helm-jabber-online-contacts))))))))
;;; World time
;;
(defvar zoneinfo-style-world-list)
(defvar legacy-style-world-list)
(defun helm-time-zone-transformer (candidates _source)
(cl-loop for i in candidates
for (z . p) in display-time-world-list
collect
(cons
(cond ((string-match (format-time-string "%H:%M" (current-time)) i)
(propertize i 'face 'helm-time-zone-current))
((string-match helm-time-zone-home-location i)
(propertize i 'face 'helm-time-zone-home))
(t i))
z)))
(defvar helm-source-time-world
(helm-build-in-buffer-source "Time World List"
:init (lambda ()
(require 'time)
(unless (and display-time-world-list
(listp display-time-world-list))
;; adapted from `time--display-world-list' from
;; emacs-27 for compatibility as
;; `display-time-world-list' is set by default to t.
(setq display-time-world-list
;; Determine if zoneinfo style timezones are
;; supported by testing that America/New York and
;; Europe/London return different timezones.
(let ((nyt (format-time-string "%z" nil "America/New_York"))
(gmt (format-time-string "%z" nil "Europe/London")))
(if (string-equal nyt gmt)
legacy-style-world-list
zoneinfo-style-world-list)))))
:data (lambda ()
(with-temp-buffer
(display-time-world-display display-time-world-list)
(buffer-string)))
:action 'helm-timezone-actions
:filtered-candidate-transformer 'helm-time-zone-transformer))
;;; Minibuffer History
;;
;;
(defvar helm-minibuffer-history-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map helm-map)
(define-key map [remap helm-minibuffer-history] 'undefined)
map))
(defcustom helm-minibuffer-history-must-match t
"Allow inserting non matching elements when nil or \\='confirm."
:group 'helm-misc
:type '(choice
(const :tag "Must match" t)
(const :tag "Confirm" confirm)
(const :tag "Always allow" nil)))
(defcustom helm-minibuffer-history-key "C-r"
"The key `helm-minibuffer-history' is bound to in minibuffer local maps."
:type '(choice (string :tag "Key") (const :tag "no binding"))
:group 'helm-mode)
(defconst helm-minibuffer-history-old-key
(cl-loop for map in '(minibuffer-local-completion-map
minibuffer-local-filename-completion-map
minibuffer-local-filename-must-match-map ; Emacs 23.1.+
minibuffer-local-isearch-map
minibuffer-local-map
minibuffer-local-must-match-filename-map ; Older Emacsen
minibuffer-local-must-match-map
minibuffer-local-ns-map)
when (and (boundp map) (symbol-value map))
collect (cons map (lookup-key (symbol-value map) "\C-r"))))
;;;###autoload
(define-minor-mode helm-minibuffer-history-mode
"Bind `helm-minibuffer-history-key' in al minibuffer maps.
This mode is enabled by `helm-mode', so there is no need to enable it directly."
:group 'helm-misc
:global t
(if helm-minibuffer-history-mode
(let ((key helm-minibuffer-history-key))
(dolist (map '(minibuffer-local-completion-map
minibuffer-local-filename-completion-map
minibuffer-local-filename-must-match-map ; Emacs 23.1.+
minibuffer-local-isearch-map
minibuffer-local-map
minibuffer-local-must-match-filename-map ; Older Emacsen
minibuffer-local-must-match-map
minibuffer-local-ns-map))
(let ((vmap (and (boundp map) (symbol-value map))))
(when (keymapp vmap)
(let ((val (and (boundp 'helm-minibuffer-history-key)
(symbol-value 'helm-minibuffer-history-key))))
(when val
(define-key vmap
(if (stringp val) (read-kbd-macro val) val)
nil)))
(when key
(define-key (symbol-value map)
(if (stringp key) (read-kbd-macro key) key)
'helm-minibuffer-history))))))
(dolist (map '(minibuffer-local-completion-map
minibuffer-local-filename-completion-map
minibuffer-local-filename-must-match-map
minibuffer-local-isearch-map
minibuffer-local-map
minibuffer-local-must-match-filename-map
minibuffer-local-must-match-map
minibuffer-local-ns-map))
(let ((vmap (and (boundp map) (symbol-value map))))
(when (keymapp vmap)
(let ((val (and (boundp 'helm-minibuffer-history-key)
(symbol-value 'helm-minibuffer-history-key))))
(when val
(define-key vmap
(if (stringp val) (read-kbd-macro val) val)
(assoc-default map helm-minibuffer-history-old-key)))))))))
;;; Helm ratpoison UI
;;
;;
(defvar helm-source-ratpoison-commands
(helm-build-in-buffer-source "Ratpoison Commands"
:init 'helm-ratpoison-commands-init
:action (helm-make-actions
"Execute the command" 'helm-ratpoison-commands-execute)
:display-to-real 'helm-ratpoison-commands-display-to-real
:candidate-number-limit 999999))
(defun helm-ratpoison-commands-init ()
(unless (helm-candidate-buffer)
(with-current-buffer (helm-candidate-buffer 'global)
;; with ratpoison prefix key
(save-excursion
(call-process "ratpoison" nil (current-buffer) nil "-c" "help"))
(while (re-search-forward "^\\([^ ]+\\) \\(.+\\)$" nil t)
(replace-match "<ratpoison> \\1: \\2"))
(goto-char (point-max))
;; direct binding
(save-excursion
(call-process "ratpoison" nil (current-buffer) nil "-c" "help top"))
(while (re-search-forward "^\\([^ ]+\\) \\(.+\\)$" nil t)
(replace-match "\\1: \\2")))))
(defun helm-ratpoison-commands-display-to-real (display)
(and (string-match ": " display)
(substring display (match-end 0))))
(defun helm-ratpoison-commands-execute (candidate)
(call-process "ratpoison" nil nil nil "-ic" candidate))
;;; Helm stumpwm UI
;;
;;
(defvar helm-source-stumpwm-commands
(helm-build-in-buffer-source "Stumpwm Commands"
:init 'helm-stumpwm-commands-init
:action (helm-make-actions
"Execute the command" 'helm-stumpwm-commands-execute)
:candidate-number-limit 999999))
(defun helm-stumpwm-commands-init ()
(with-current-buffer (helm-candidate-buffer 'global)
(save-excursion
(call-process "stumpish" nil (current-buffer) nil "commands"))
(while (re-search-forward "[ ]*\\([^ ]+\\)[ ]*\n?" nil t)
(replace-match "\n\\1\n"))
(delete-blank-lines)
(sort-lines nil (point-min) (point-max))
(goto-char (point-max))))
(defun helm-stumpwm-commands-execute (candidate)
(call-process "stumpish" nil nil nil candidate))
;;;###autoload
(defun helm-world-time ()
"Preconfigured `helm' to show world time.
Default action change TZ environment variable locally to emacs."
(interactive)
(helm :sources 'helm-source-time-world :buffer "*helm world time*"))
;;;###autoload
(defun helm-insert-latex-math ()
"Preconfigured helm for latex math symbols completion."
(interactive)
(helm :sources 'helm-source-latex-math :buffer "*helm latex*"))
;;;###autoload
(defun helm-ratpoison-commands ()
"Preconfigured `helm' to execute ratpoison commands."
(interactive)
(helm :sources 'helm-source-ratpoison-commands
:buffer "*helm ratpoison commands*"))
;;;###autoload
(defun helm-stumpwm-commands()
"Preconfigured helm for stumpwm commands."
(interactive)
(helm :sources 'helm-source-stumpwm-commands
:buffer "*helm stumpwm commands*"))
;;;###autoload
(defun helm-minibuffer-history ()
"Preconfigured `helm' for `minibuffer-history'."
(interactive)
(cl-assert (minibuffer-window-active-p (selected-window)) nil
"Error: Attempt to use minibuffer history outside a minibuffer")
(let* ((enable-recursive-minibuffers t)
(query-replace-p (or (eq last-command 'query-replace)
(eq last-command 'query-replace-regexp)))
(elm (helm-comp-read "Next element matching (regexp): "
(cl-loop for i in
(symbol-value minibuffer-history-variable)
unless (equal "" i) collect i into history
finally return
(if (consp (car history))
(mapcar 'prin1-to-string history)
history))
:header-name
(lambda (name)
(format "%s (%s)" name minibuffer-history-variable))
:buffer "*helm minibuffer-history*"
:must-match helm-minibuffer-history-must-match
:multiline t
:keymap helm-minibuffer-history-map
:allow-nest t)))
;; Fix Bug#1667 with emacs-25+ `query-replace-from-to-separator'.
(when (and (boundp 'query-replace-from-to-separator) query-replace-p)
(let ((pos (string-match "\0" elm)))
(and pos
(add-text-properties
pos (1+ pos)
`(display ,query-replace-from-to-separator separator t)
elm))))
(delete-minibuffer-contents)
(insert elm)))
;;;###autoload
(defun helm-outline (&optional arg)
"Basic helm navigation tool for outline buffers."
(interactive "P")
(require 'outline)
(let ((outline-regexp (if arg (read-regexp "Outline regexp") outline-regexp)))
(helm :sources (helm-build-sync-source "helm outline"
:candidates
(lambda ()
(with-helm-current-buffer
(save-excursion
(goto-char (point-min))
(cl-loop while (re-search-forward outline-regexp nil t)
for beg = (match-beginning 0)
for end = (progn
(outline-end-of-heading) (point))
collect
(cons (buffer-substring beg end) beg)))))
:action (lambda (pos)
(helm-goto-char pos)
(helm-highlight-current-line)))
:preselect (save-excursion
(when (condition-case _err
(outline-back-to-heading)
(error nil))
(regexp-quote
(buffer-substring
(point) (progn (outline-end-of-heading) (point))))))
:buffer "*helm outline*")))
(provide 'helm-misc)
;;; helm-misc.el ends here
|
