;;; helm-misc.el --- Various functions for helm -*- lexical-binding: t -*-
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;; Copyright (C) 2012 ~ 2018 Thierry Volpiatto <thierry.volpiatto@gmail.com>
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Code:
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(require 'cl-lib)
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(require 'helm)
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(require 'helm-help)
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(require 'helm-types)
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(declare-function display-time-world-display "time.el")
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(defvar display-time-world-list)
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(declare-function LaTeX-math-mode "ext:latex.el")
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(declare-function jabber-chat-with "ext:jabber.el")
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(declare-function jabber-read-account "ext:jabber.el")
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(defgroup helm-misc nil
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"Various Applications and libraries for Helm."
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:group 'helm)
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(defcustom helm-time-zone-home-location "Paris"
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"The time zone of your home"
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:group 'helm-misc
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:type 'string)
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(defcustom helm-timezone-actions
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'(("Set timezone env (TZ)" . (lambda (candidate)
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(setenv "TZ" candidate))))
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"Actions for helm-timezone."
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:group 'helm-misc
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:type '(alist :key-type string :value-type function))
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(defface helm-time-zone-current
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'((t (:foreground "green")))
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"Face used to colorize current time in `helm-world-time'."
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:group 'helm-misc)
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(defface helm-time-zone-home
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'((t (:foreground "red")))
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"Face used to colorize home time in `helm-world-time'."
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:group 'helm-misc)
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;;; Latex completion
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;;
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;; Test
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;; (setq LaTeX-math-menu '("Math"
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;; ["foo" val0 t]
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;; ("bar"
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;; ["baz" val1 t])
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;; ("aze"
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;; ["zer" val2 t])
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;; ("AMS"
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;; ("rec"
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;; ["fer" val3 t])
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;; ("rty"
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;; ["der" val4 t]))
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;; ("ABC"
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;; ("xcv"
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;; ["sdf" val5 t])
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;; ("dfg"
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;; ["fgh" val6 t]))))
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;; (helm-latex-math-candidates)
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;; =>
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;; (("foo" . val0)
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;; ("baz" . val1)
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;; ("zer" . val2)
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;; ("fer" . val3)
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;; ("der" . val4)
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;; ("sdf" . val5)
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;; ("fgh" . val6))
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(defvar LaTeX-math-menu)
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(defun helm-latex-math-candidates ()
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(cl-labels ((helm-latex--math-collect (L)
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(cond ((vectorp L)
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(list (cons (aref L 0) (aref L 1))))
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((listp L)
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(cl-loop for a in L nconc
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(helm-latex--math-collect a))))))
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(helm-latex--math-collect LaTeX-math-menu)))
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(defvar helm-source-latex-math
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(helm-build-sync-source "Latex Math Menu"
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:init (lambda ()
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(with-helm-current-buffer
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(LaTeX-math-mode 1)))
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:candidate-number-limit 9999
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:candidates 'helm-latex-math-candidates
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:action (lambda (candidate)
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(call-interactively candidate))))
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;;; Jabber Contacts (jabber.el)
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(defun helm-jabber-online-contacts ()
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"List online Jabber contacts."
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(with-no-warnings
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(cl-loop for item in (jabber-concat-rosters)
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when (get item 'connected)
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collect
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(if (get item 'name)
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(cons (get item 'name) item)
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(cons (symbol-name item) item)))))
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(defvar helm-source-jabber-contacts
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(helm-build-sync-source "Jabber Contacts"
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:init (lambda () (require 'jabber))
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:candidates (lambda () (mapcar 'car (helm-jabber-online-contacts)))
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:action (lambda (x)
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(jabber-chat-with
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(jabber-read-account)
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(symbol-name
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(cdr (assoc x (helm-jabber-online-contacts))))))))
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;;; World time
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;;
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(defvar zoneinfo-style-world-list)
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(defvar legacy-style-world-list)
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(defun helm-time-zone-transformer (candidates _source)
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(cl-loop for i in candidates
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for (z . p) in display-time-world-list
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collect
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(cons
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(cond ((string-match (format-time-string "%H:%M" (current-time)) i)
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(propertize i 'face 'helm-time-zone-current))
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((string-match helm-time-zone-home-location i)
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(propertize i 'face 'helm-time-zone-home))
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(t i))
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z)))
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(defvar helm-source-time-world
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(helm-build-in-buffer-source "Time World List"
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:init (lambda ()
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(require 'time)
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(unless (and display-time-world-list
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(listp display-time-world-list))
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;; adapted from `time--display-world-list' from
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;; emacs-27 for compatibility as
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;; `display-time-world-list' is set by default to t.
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(setq display-time-world-list
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;; Determine if zoneinfo style timezones are
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;; supported by testing that America/New York and
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;; Europe/London return different timezones.
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(let ((nyt (format-time-string "%z" nil "America/New_York"))
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(gmt (format-time-string "%z" nil "Europe/London")))
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(if (string-equal nyt gmt)
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legacy-style-world-list
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zoneinfo-style-world-list)))))
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:data (lambda ()
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(with-temp-buffer
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(display-time-world-display display-time-world-list)
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(buffer-string)))
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:action 'helm-timezone-actions
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:filtered-candidate-transformer 'helm-time-zone-transformer))
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;;; Commands
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;;
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(defun helm-call-interactively (cmd-or-name)
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"Execute CMD-OR-NAME as Emacs command.
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It is added to `extended-command-history'.
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`helm-current-prefix-arg' is used as the command's prefix argument."
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(setq extended-command-history
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(cons (helm-stringify cmd-or-name)
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(delete (helm-stringify cmd-or-name) extended-command-history)))
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(let ((current-prefix-arg helm-current-prefix-arg)
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(cmd (helm-symbolify cmd-or-name)))
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(if (stringp (symbol-function cmd))
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(execute-kbd-macro (symbol-function cmd))
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(setq this-command cmd)
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(call-interactively cmd))))
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;;; Minibuffer History
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;;
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;;
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(defvar helm-minibuffer-history-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map helm-map)
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(define-key map [remap helm-minibuffer-history] 'undefined)
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map))
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(defcustom helm-minibuffer-history-must-match t
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"Allow inserting non matching elements when nil or 'confirm."
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:group 'helm-misc
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:type '(choice
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(const :tag "Must match" t)
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(const :tag "Confirm" 'confirm)
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(const :tag "Always allow" nil)))
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;;; Shell history
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;;
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;;
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(defun helm-comint-input-ring-action (candidate)
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"Default action for comint history."
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(with-helm-current-buffer
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(delete-region (comint-line-beginning-position) (point-max))
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(insert candidate)))
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(defvar helm-source-comint-input-ring
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(helm-build-sync-source "Comint history"
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:candidates (lambda ()
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(with-helm-current-buffer
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(ring-elements comint-input-ring)))
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:action 'helm-comint-input-ring-action)
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"Source that provide helm completion against `comint-input-ring'.")
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;;; Helm ratpoison UI
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;;
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;;
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(defvar helm-source-ratpoison-commands
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(helm-build-in-buffer-source "Ratpoison Commands"
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:init 'helm-ratpoison-commands-init
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:action (helm-make-actions
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"Execute the command" 'helm-ratpoison-commands-execute)
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:display-to-real 'helm-ratpoison-commands-display-to-real
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:candidate-number-limit 999999))
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(defun helm-ratpoison-commands-init ()
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(unless (helm-candidate-buffer)
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(with-current-buffer (helm-candidate-buffer 'global)
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;; with ratpoison prefix key
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(save-excursion
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(call-process "ratpoison" nil (current-buffer) nil "-c" "help"))
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(while (re-search-forward "^\\([^ ]+\\) \\(.+\\)$" nil t)
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(replace-match "<ratpoison> \\1: \\2"))
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(goto-char (point-max))
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;; direct binding
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(save-excursion
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(call-process "ratpoison" nil (current-buffer) nil "-c" "help top"))
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(while (re-search-forward "^\\([^ ]+\\) \\(.+\\)$" nil t)
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(replace-match "\\1: \\2")))))
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(defun helm-ratpoison-commands-display-to-real (display)
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(and (string-match ": " display)
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(substring display (match-end 0))))
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(defun helm-ratpoison-commands-execute (candidate)
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(call-process "ratpoison" nil nil nil "-ic" candidate))
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;;; Helm stumpwm UI
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;;
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;;
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(defvar helm-source-stumpwm-commands
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(helm-build-in-buffer-source "Stumpwm Commands"
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:init 'helm-stumpwm-commands-init
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:action (helm-make-actions
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"Execute the command" 'helm-stumpwm-commands-execute)
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:candidate-number-limit 999999))
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(defun helm-stumpwm-commands-init ()
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(with-current-buffer (helm-candidate-buffer 'global)
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(save-excursion
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(call-process "stumpish" nil (current-buffer) nil "commands"))
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(while (re-search-forward "[ ]*\\([^ ]+\\)[ ]*\n?" nil t)
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(replace-match "\n\\1\n"))
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(delete-blank-lines)
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(sort-lines nil (point-min) (point-max))
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(goto-char (point-max))))
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(defun helm-stumpwm-commands-execute (candidate)
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(call-process "stumpish" nil nil nil candidate))
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;;;###autoload
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(defun helm-world-time ()
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"Preconfigured `helm' to show world time.
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Default action change TZ environment variable locally to emacs."
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(interactive)
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(helm-other-buffer 'helm-source-time-world "*helm world time*"))
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;;;###autoload
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(defun helm-insert-latex-math ()
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"Preconfigured helm for latex math symbols completion."
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(interactive)
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(helm-other-buffer 'helm-source-latex-math "*helm latex*"))
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;;;###autoload
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(defun helm-ratpoison-commands ()
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"Preconfigured `helm' to execute ratpoison commands."
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(interactive)
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(helm-other-buffer 'helm-source-ratpoison-commands
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"*helm ratpoison commands*"))
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;;;###autoload
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(defun helm-stumpwm-commands()
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"Preconfigured helm for stumpwm commands."
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(interactive)
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(helm-other-buffer 'helm-source-stumpwm-commands
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"*helm stumpwm commands*"))
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;;;###autoload
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(defun helm-minibuffer-history ()
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"Preconfigured `helm' for `minibuffer-history'."
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(interactive)
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(cl-assert (minibuffer-window-active-p (selected-window)) nil
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"Error: Attempt to use minibuffer history outside a minibuffer")
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(let* ((enable-recursive-minibuffers t)
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(query-replace-p (or (eq last-command 'query-replace)
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(eq last-command 'query-replace-regexp)))
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(elm (helm-comp-read "pattern: "
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(cl-loop for i in
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(symbol-value minibuffer-history-variable)
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unless (string= "" i) collect i into history
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finally return
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(if (consp (car history))
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(mapcar 'prin1-to-string history)
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history))
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:header-name
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(lambda (name)
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(format "%s (%s)" name minibuffer-history-variable))
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:buffer "*helm minibuffer-history*"
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:must-match helm-minibuffer-history-must-match
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:multiline t
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:keymap helm-minibuffer-history-map
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:allow-nest t)))
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;; Fix issue #1667 with emacs-25+ `query-replace-from-to-separator'.
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(when (and (boundp 'query-replace-from-to-separator) query-replace-p)
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(let ((pos (string-match "\0" elm)))
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(and pos
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(add-text-properties
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pos (1+ pos)
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`(display ,query-replace-from-to-separator separator t)
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elm))))
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(delete-minibuffer-contents)
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(insert elm)))
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;;;###autoload
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(defun helm-comint-input-ring ()
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"Preconfigured `helm' that provide completion of `comint' history."
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(interactive)
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(when (derived-mode-p 'comint-mode)
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(helm :sources 'helm-source-comint-input-ring
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:input (buffer-substring-no-properties (comint-line-beginning-position)
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(point-at-eol))
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:buffer "*helm comint history*")))
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(provide 'helm-misc)
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;; Local Variables:
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;; byte-compile-warnings: (not obsolete)
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;; coding: utf-8
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;; indent-tabs-mode: nil
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;; End:
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;;; helm-misc.el ends here
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