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;;; helm-plugin.el --- Helm plugins -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2015 Thierry Volpiatto <thierry.volpiatto@gmail.com>
;; 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-utils)
;;; Plug-in: `info-index'
;;
;;
(defun helm-make-info-source (source file)
`(,@source
(name . ,(concat "Info Index: " file))
(info-file . ,file)
(init . helm-info-init)
(display-to-real . helm-info-display-to-real)
(get-line . buffer-substring)
(candidates-in-buffer)
(action ("Goto node" . helm-info-goto))))
(defun helm-compile-source--info-index (source)
(helm-aif (helm-interpret-value (assoc-default 'info-index source))
(helm-make-info-source source it)
source))
(add-to-list 'helm-compile-source-functions 'helm-compile-source--info-index)
(helm-document-attribute 'info-index "info-index plugin"
" Create a source of info index very easily.
Example:
(defvar helm-source-info-wget '((info-index . \"wget\"))")
;;; Plug-in: `candidates-file'
;;
;; List all lines in a file.
(defun helm-compile-source--candidates-file (source)
(if (assoc-default 'candidates-file source)
`((init helm-p-candidates-file-init
,@(let ((orig-init (assoc-default 'init source)))
(cond ((null orig-init) nil)
((functionp orig-init) (list orig-init))
(t orig-init))))
(candidates-in-buffer)
,@source)
source))
(add-to-list 'helm-compile-source-functions 'helm-compile-source--candidates-file)
(defun helm-p-candidates-file-init ()
(cl-destructuring-bind (file &optional updating)
(helm-mklist (helm-attr 'candidates-file))
(setq file (helm-interpret-value file))
(with-current-buffer (helm-candidate-buffer 'global)
(insert-file-contents file)
(when updating
(buffer-disable-undo)
(font-lock-mode -1)
(auto-revert-mode 1)))))
(helm-document-attribute 'candidates-file "candidates-file plugin"
" Use a file as the candidates buffer.
1st argument is a filename, string or function name or variable
name. If optional 2nd argument is non-nil, the file is opened with
`auto-revert-mode' enabled.
Example:
\(defvar helm-source-test-file
'((name . \"test1\")
(candidates-file \"~/.emacs.el\" t)))
Will list all lines in .emacs.el.")
;;; Plug-in: `persistent-help'
;;
;; Add help about persistent action in `helm-buffer' header.
(defun helm-compile-source--persistent-help (source)
(if (assoc 'header-line source)
source
(append source '((header-line . helm-persistent-help-string)))))
(add-to-list 'helm-compile-source-functions 'helm-compile-source--persistent-help)
(defun helm-persistent-help-string ()
(substitute-command-keys
(concat "\\<helm-map>\\[helm-execute-persistent-action]: "
(or (helm-interpret-value (helm-attr 'persistent-help))
(helm-aif (or (assoc-default
'persistent-action
(helm-get-current-source))
(assoc-default
'action (helm-get-current-source)))
(cond ((symbolp it)
(symbol-name it))
((listp it)
(or (ignore-errors (caar it)) ""))))
"")
" (keeping session)")))
;;; Document new attributes
;;
;;
(helm-document-attribute 'persistent-help "persistent-help plug-in"
" A string to explain persistent-action of this source. It also
accepts a function or a variable name.")
(provide 'helm-plugin)
;; Local Variables:
;; byte-compile-warnings: (not cl-functions obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; helm-plugin ends here
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