forked from emacs-helm/helm
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathhelm-command.el
166 lines (143 loc) · 6.55 KB
/
helm-command.el
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
;;; helm-command.el --- Helm execute-exended-command.
;; Copyright (C) 2012 ~ 2013 Thierry Volpiatto <[email protected]>
;; 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)
(require 'helm)
(require 'helm-mode)
(defgroup helm-command nil
"Emacs command related Applications and libraries for Helm."
:group 'helm)
(defcustom helm-M-x-requires-pattern 2
"Value of requires-pattern for `helm-M-x'.
Set it to 0 to disable requires-pattern in `helm-M-x'."
:group 'helm-command
:type 'boolean)
(defcustom helm-M-x-always-save-history nil
"`helm-M-x' Save command in `extended-command-history' even when it fail."
:group 'helm-command
:type 'boolean)
;;; Faces
;;
;;
(defface helm-M-x-key '((t (:foreground "orange" :underline t)))
"Face used in helm-M-x to show keybinding."
:group 'helm-command)
(defvar helm-M-x-input-history nil)
(defun* helm-M-x-get-major-mode-command-alist (mode-map)
"Return alist of MODE-MAP."
(loop for key being the key-seqs of mode-map using (key-bindings com)
for str-key = (key-description key)
for ismenu = (string-match "<menu-bar>" str-key)
unless ismenu collect (cons str-key com)))
(defun helm-get-mode-map-from-mode (mode)
"Guess the mode-map name according to MODE.
Some modes don't use conventional mode-map name
so we need to guess mode-map name. e.g python-mode ==> py-mode-map.
Return nil if no mode-map found."
(loop ;; Start with a conventional mode-map name.
with mode-map = (intern-soft (format "%s-map" mode))
with mode-string = (symbol-name mode)
with mode-name = (replace-regexp-in-string "-mode" "" mode-string)
while (not mode-map)
for count downfrom (length mode-name)
;; Return when no result after parsing entire string.
when (eq count 0) return nil
for sub-name = (substring mode-name 0 count)
do (setq mode-map (intern-soft (format "%s-map" (concat sub-name "-mode"))))
finally return mode-map))
(defun helm-M-x-current-mode-map-alist ()
"Return mode-map alist of current `major-mode'."
(let ((map (helm-get-mode-map-from-mode major-mode)))
(when (and map (boundp map))
(helm-M-x-get-major-mode-command-alist (symbol-value map)))))
(defun helm-M-x-transformer (candidates sources)
"filtered-candidate-transformer to show bindings in emacs commands.
Show global bindings and local bindings according to current `major-mode'."
(with-helm-current-buffer
(loop with local-map = (helm-M-x-current-mode-map-alist)
for cand in candidates
for local-key = (car (rassq cand local-map))
for key = (substitute-command-keys (format "\\[%s]" cand))
collect
(cons (cond ((and (string-match "^M-x" key) local-key)
(format "%s (%s)"
cand (propertize
local-key
'face 'helm-M-x-key)))
((string-match "^M-x" key) cand)
(t (format "%s (%s)"
cand (propertize
key
'face 'helm-M-x-key))))
cand) into ls
finally return
(sort ls #'(lambda (x y) (string-lessp (car x) (car y)))))))
;;;###autoload
(defun helm-M-x ()
"Preconfigured `helm' for Emacs commands.
It is `helm' replacement of regular `M-x' `execute-extended-command'."
(interactive)
(let* ((history (loop with hist
for i in extended-command-history
for com = (intern i)
when (commandp com)
collect i into hist finally return hist))
command sym-com in-help help-cand
(pers-help #'(lambda (candidate)
(let ((hbuf (get-buffer (help-buffer))))
(if (and in-help (string= candidate help-cand)
(null helm-persistent-action-use-special-display))
(progn
;; When M-x is started from a help buffer,
;; Don't kill it as it is helm-current-buffer.
(unless (equal hbuf helm-current-buffer)
(kill-buffer hbuf)
(set-window-buffer (get-buffer-window hbuf)
helm-current-buffer))
(setq in-help nil))
(helm-describe-function candidate)
(setq in-help t))
(setq help-cand candidate)))))
(setq command (helm-comp-read
"M-x " obarray
:test 'commandp
:requires-pattern helm-M-x-requires-pattern
:name "Emacs Commands"
:buffer "*helm M-x*"
:persistent-action pers-help
:persistent-help "Describe this command"
:history history
:del-input nil
:mode-line helm-mode-line-string
:must-match t
:candidates-in-buffer t
:fc-transformer 'helm-M-x-transformer))
(setq sym-com (intern command))
(unless current-prefix-arg
(setq current-prefix-arg helm-current-prefix-arg))
;; Avoid having `this-command' set to *exit-minibuffer.
(setq this-command sym-com)
;; This ugly construct is to save history even on error.
(unless helm-M-x-always-save-history
(call-interactively sym-com))
(setq extended-command-history
(cons command (delete command history)))
(when helm-M-x-always-save-history
(call-interactively sym-com))))
(provide 'helm-command)
;; Local Variables:
;; byte-compile-warnings: (not cl-functions obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; helm-command.el ends here