summaryrefslogtreecommitdiffstats
path: root/emacs.d/lisp/magit/magit-key-mode.el
blob: edfcbd743801890a08c8ba919da836de60f18426 (plain) (blame)
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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
(require 'magit)

(require 'assoc)
(eval-when-compile (require 'cl))

(defvar magit-key-mode-key-maps '()
  "This will be filled lazily with proper `define-key' built
  keymaps as they're requested.")

(defvar magit-key-mode-buf-name "*magit-key*"
  "Name of the buffer.")

(defvar magit-key-mode-current-args '()
  "Will contain the arguments to be passed to git.")

(defvar magit-key-mode-current-options '()
  "Will contain the arguments to be passed to git.")

(defvar magit-log-mode-window-conf nil
  "Will hold the pre-menu configuration of magit.")

(defvar magit-key-mode-groups
  '((logging
     (man-page "git-log")
     (actions
      ("l" "Short" magit-log)
      ("L" "Long" magit-log-long)
      ("h" "Reflog" magit-reflog)
      ("rl" "Ranged short" magit-log-ranged)
      ("rL" "Ranged long" magit-log-long-ranged)
      ("rh" "Ranged reflog" magit-reflog-ranged))
     (switches
      ("-m" "Only merge commits" "--merges")
      ("-f" "First parent" "--first-parent")
      ("-i" "Case insensitive patterns" "-i")
      ("-pr" "Pickaxe regex" "--pickaxe-regex")
      ("-n" "Name only" "--name-only")
      ("-am" "All match" "--all-match")
      ("-al" "All" "--all"))
     (arguments
      ("=r" "Relative" "--relative=" read-directory-name)
      ("=c" "Committer" "--committer=" read-from-minibuffer)
      ("=>" "Since" "--since=" read-from-minibuffer)
      ("=<" "Before" "--before=" read-from-minibuffer)
      ("=s" "Pickaxe search" "-S" read-from-minibuffer)
      ("=a" "Author" "--author=" read-from-minibuffer)
      ("=g" "Grep" "--grep=" read-from-minibuffer)))

    (running
     (actions
      ("!" "Command from root" magit-shell-command)
      (":" "Git command" magit-git-command)
      ("g" "git gui" magit-run-git-gui)
      ("k" "gitk" magit-run-gitk)))

    (fetching
     (man-page "git-fetch")
     (actions
      ("f" "Current" magit-fetch-current)
      ("a" "All" magit-remote-update)
      ("o" "Other" magit-fetch))
     (switches
      ("-p" "Prune" "--prune")))

    (pushing
     (man-page "git-push")
     (actions
      ("P" "Push" magit-push)
      ("t" "Push tags" magit-push-tags))
     (switches
      ("-f" "Force" "--force")
      ("-d" "Dry run" "-n")
      ("-u" "Set upstream" "-u")))

    (pulling
     (man-page "git-pull")
     (actions
      ("F" "Pull" magit-pull))
     (switches
      ("-r" "Rebase" "--rebase")))

    (branching
     (man-page "git-branch")
     (actions
      ("v" "Branch manager" magit-branch-manager)
      ("n" "New" magit-create-branch)
      ("m" "Move" magit-move-branch)
      ("d" "Delete" magit-delete-branch)
      ("D" "Force Delete" magit-delete-branch-forced)
      ("b" "Checkout" magit-checkout)))

    (tagging
     (man-page "git-tag")
     (actions
      ("t" "Lightweight" magit-tag)
      ("a" "Annotated" magit-annotated-tag))
     (switches
      ("-f" "Force" "-f")))

    (stashing
     (man-page "git-stash")
     (actions
      ("z" "Save" magit-stash)
      ("s" "Snapshot" magit-stash-snapshot))
     (switches
      ("-k" "Keep index" "--keep-index")))

    (merging
     (man-page "git-merge")
     (actions
      ("m" "Merge" magit-merge))
     (switches
      ("-ff" "Fast-forward only" "--ff-only")
      ("-nf" "No fast-forward" "--no-ff")
      ("-nc" "No commit" "--no-commit")
      ("-sq" "Squash" "--squash"))
     (arguments
      ("-st" "Strategy" "--strategy=" read-from-minibuffer)))

    (rewriting
     (actions
      ("b" "Begin" magit-rewrite-start)
      ("s" "Stop" magit-rewrite-stop)
      ("a" "Abort" magit-rewrite-abort)
      ("f" "Finish" magit-rewrite-finish)
      ("*" "Set unused" magit-rewrite-set-unused)
      ("." "Set used" magit-rewrite-set-used)))

    (submodule
     (man-page "git-submodule")
     (actions
      ("u" "Update" magit-submodule-update)
      ("b" "Both update and init" magit-submodule-update-init)
      ("i" "Init" magit-submodule-init)
      ("s" "Sync" magit-submodule-sync)))

    (bisecting
     (man-page "git-bisect")
     (actions
      ("b" "Bad" magit-bisect-bad)
      ("g" "Good" magit-bisect-good)
      ("k" "Skip" magit-bisect-skip)
      ("l" "Log" magit-bisect-log)
      ("r" "Reset" magit-bisect-reset)
      ("s" "Start" magit-bisect-start)
      ("u" "Run" magit-bisect-run)
      ("v" "Visualize" magit-bisect-visualize))))
  "Holds the key, help, function mapping for the log-mode. If you
  modify this make sure you reset `magit-key-mode-key-maps' to
  nil.")

(defun magit-key-mode-delete-group (group)
  "Delete a group from `magit-key-mode-key-maps'."
  (let ((items (assoc group magit-key-mode-groups)))
    (when items
      ;; reset the cache
      (setq magit-key-mode-key-maps nil)
      ;; delete the whole group
      (setq magit-key-mode-groups
            (delq items magit-key-mode-groups))
      ;; unbind the defun
      (magit-key-mode-de-generate group))
    magit-key-mode-groups))

(defun magit-key-mode-add-group (group)
  "Add a new group to `magit-key-mode-key-maps'. If there's
already a group of that name then this will completely remove it
and put in its place an empty one of the same name."
  (when (assoc group magit-key-mode-groups)
    (magit-key-mode-delete-group group))
  (setq magit-key-mode-groups
        (cons (list group '(actions)) magit-key-mode-groups)))

(defun magit-key-mode-key-defined-p (for-group key)
  "If KEY is defined as any of switch, argument or action within
FOR-GROUP then return t"
  (catch 'result
    (let ((options (magit-key-mode-options-for-group for-group)))
      (dolist (type '(actions switches arguments))
        (when (assoc key (assoc type options))
          (throw 'result t))))))

(defun magit-key-mode-update-group (for-group thing &rest args)
  "Abstraction for setting values in `magit-key-mode-key-maps'."
  (let* ((options (magit-key-mode-options-for-group for-group))
         (things (assoc thing options))
         (key (car args)))
    (if (cdr things)
        (if (magit-key-mode-key-defined-p for-group key)
            (error "%s is already defined in the %s group." key for-group)
          (setcdr (cdr things) (cons args (cddr things))))
      (setcdr things (list args)))
    (setq magit-key-mode-key-maps nil)
    things))

(defun magit-key-mode-insert-argument (for-group key desc arg read-func)
  "Add a new binding (KEY) in FOR-GROUP which will use READ-FUNC
to receive input to apply to argument ARG git is run. DESC should
be a brief description of the binding."
  (magit-key-mode-update-group for-group 'arguments key desc arg read-func))

(defun magit-key-mode-insert-switch (for-group key desc switch)
  "Add a new binding (KEY) in FOR-GROUP which will add SWITCH to git's
command line when it runs. DESC should be a brief description of
the binding."
  (magit-key-mode-update-group for-group 'switches key desc switch))

(defun magit-key-mode-insert-action (for-group key desc func)
  "Add a new binding (KEY) in FOR-GROUP which will run command
FUNC. DESC should be a brief description of the binding."
  (magit-key-mode-update-group for-group 'actions key desc func))

(defun magit-key-mode-options-for-group (for-group)
  "Retrieve the options (switches, commands and arguments) for
the group FOR-GROUP."
  (or (cdr (assoc for-group magit-key-mode-groups))
      (error "Unknown group '%s'" for-group)))

(defun magit-key-mode-help (for-group)
  "Provide help for a key (which the user is prompted for) within
FOR-GROUP."
  (let* ((opts (magit-key-mode-options-for-group for-group))
         (man-page (cadr (assoc 'man-page opts)))
         (seq (read-key-sequence
               (format "Enter command prefix%s: "
                       (if man-page
                         (format ", `?' for man `%s'" man-page)
                         ""))))
         (actions (cdr (assoc 'actions opts))))
    (cond
      ;; if it is an action popup the help for the to-be-run function
      ((assoc seq actions) (describe-function (nth 2 (assoc seq actions))))
      ;; if there is "?" show a man page if there is one
      ((equal seq "?")
       (if man-page
         (man man-page)
         (error "No man page associated with `%s'" for-group)))
      (t (error "No help associated with `%s'" seq)))))

(defun magit-key-mode-exec-at-point ()
  "Run action/args/option at point."
  (interactive)
  (let* ((key (or (get-text-property (point) 'key-group-executor)
                  (error "Nothing at point to do.")))
         (def (lookup-key (current-local-map) key)))
    (call-interactively def)))
(defun magit-key-mode-jump-to-next-exec ()
  "Jump to the next action/args/option point."
  (interactive)
  (let* ((oldp (point))
         (old  (get-text-property oldp 'key-group-executor))
         (p    (if (= oldp (point-max)) (point-min) (1+ oldp))))
    (while (let ((new (get-text-property p 'key-group-executor)))
             (and (not (= p oldp)) (or (not new) (eq new old))))
      (setq p (if (= p (point-max)) (point-min) (1+ p))))
    (goto-char p)
    (skip-chars-forward " ")))

(defun magit-key-mode-build-keymap (for-group)
  "Construct a normal looking keymap for the key mode to use and
put it in magit-key-mode-key-maps for fast lookup."
  (let* ((options (magit-key-mode-options-for-group for-group))
         (actions (cdr (assoc 'actions options)))
         (switches (cdr (assoc 'switches options)))
         (arguments (cdr (assoc 'arguments options)))
         (map (make-sparse-keymap)))
    (suppress-keymap map 'nodigits)
    ;; ret dwim
    (define-key map (kbd "RET") 'magit-key-mode-exec-at-point)
    ;; tab jumps to the next "button"
    (define-key map (kbd "TAB") 'magit-key-mode-jump-to-next-exec)

    ;; all maps should `quit' with `C-g' or `q'
    (define-key map (kbd "C-g") `(lambda ()
                                   (interactive)
                                   (magit-key-mode-command nil)))
    (define-key map (kbd "q")   `(lambda ()
                                   (interactive)
                                   (magit-key-mode-command nil)))
    ;; run help
    (define-key map (kbd "?") `(lambda ()
                                 (interactive)
                                 (magit-key-mode-help ',for-group)))

    (flet ((defkey (k action)
             (when (and (lookup-key map (car k))
                        (not (numberp (lookup-key map (car k)))))
               (message "Warning: overriding binding for `%s' in %S"
                        (car k) for-group)
               (ding)
               (sit-for 2))
             (define-key map (car k)
               `(lambda () (interactive) ,action))))
      (when actions
        (dolist (k actions)
          (defkey k `(magit-key-mode-command ',(nth 2 k)))))
      (when switches
        (dolist (k switches)
          (defkey k `(magit-key-mode-add-option ',for-group ,(nth 2 k)))))
      (when arguments
        (dolist (k arguments)
          (defkey k `(magit-key-mode-add-argument
                      ',for-group ,(nth 2 k) ',(nth 3 k))))))

    (aput 'magit-key-mode-key-maps for-group map)
    map))

(defvar magit-key-mode-prefix nil
  "For internal use.  Holds the prefix argument to the command
that brought up the key-mode window, so it can be used by the
command that's eventually invoked.")

(defun magit-key-mode-command (func)
  (let ((args '()))
    ;; why can't maphash return a list?!
    (maphash (lambda (k v)
               (push (concat k (shell-quote-argument v)) args))
             magit-key-mode-current-args)
    (let ((magit-custom-options (append args magit-key-mode-current-options))
          (current-prefix-arg (or current-prefix-arg magit-key-mode-prefix)))
      (set-window-configuration magit-log-mode-window-conf)
      (when func
        (call-interactively func))
      (magit-key-mode-kill-buffer))))

(defvar magit-key-mode-current-args nil
  "A hash-table of current argument set (which will eventually
  make it to the git command-line).")

(defun magit-key-mode-add-argument (for-group arg-name input-func)
  (let ((input (funcall input-func (concat arg-name ": "))))
    (puthash arg-name input magit-key-mode-current-args)
   (magit-key-mode-redraw for-group)))

(defvar magit-key-mode-current-options '()
  "Current option set (which will eventually make it to the git
  command-line).")

(defun magit-key-mode-add-option (for-group option-name)
  "Toggles the appearance of OPTION-NAME in
`magit-key-mode-current-options'."
  (if (not (member option-name magit-key-mode-current-options))
      (add-to-list 'magit-key-mode-current-options option-name)
    (setq magit-key-mode-current-options
          (delete option-name magit-key-mode-current-options)))
  (magit-key-mode-redraw for-group))

(defun magit-key-mode-kill-buffer ()
  (interactive)
  (kill-buffer magit-key-mode-buf-name))

(defvar magit-log-mode-window-conf nil
  "Pre-popup window configuration.")

(defun magit-key-mode (for-group &optional original-opts)
  "Mode for magit key selection. All commands, switches and
options can be toggled/actioned with the key combination
highlighted before the description."
  (interactive)
  ;; save the window config to restore it as was (no need to make this
  ;; buffer local)
  (setq magit-log-mode-window-conf
        (current-window-configuration))
  ;; setup the mode, draw the buffer
  (let ((buf (get-buffer-create magit-key-mode-buf-name)))
    (delete-other-windows)
    (split-window-vertically)
    (other-window 1)
    (switch-to-buffer buf)
    (kill-all-local-variables)
    (set (make-local-variable
          'magit-key-mode-current-options)
         original-opts)
    (set (make-local-variable
          'magit-key-mode-current-args)
         (make-hash-table))
    (set (make-local-variable 'magit-key-mode-prefix) current-prefix-arg)
    (magit-key-mode-redraw for-group))
  (message
   (concat
    "Type a prefix key to toggle it. Run 'actions' with their prefixes. "
    "'?' for more help.")))

(defun magit-key-mode-get-key-map (for-group)
  "Get or build the keymap for FOR-GROUP."
  (or (cdr (assoc for-group magit-key-mode-key-maps))
      (magit-key-mode-build-keymap for-group)))

(defun magit-key-mode-redraw (for-group)
  "(re)draw the magit key buffer."
  (let ((buffer-read-only nil)
        (old-point (point)))
    (erase-buffer)
    (make-local-variable 'font-lock-defaults)
    (use-local-map (magit-key-mode-get-key-map for-group))
    (magit-key-mode-draw for-group)
    (delete-trailing-whitespace)
    (setq mode-name "magit-key-mode" major-mode 'magit-key-mode)
    (goto-char old-point))
  (setq buffer-read-only t)
  (fit-window-to-buffer))

(defun magit-key-mode-draw-header (header)
  "Draw a header with the correct face."
  (insert (propertize header 'face 'font-lock-keyword-face) "\n"))

(defvar magit-key-mode-args-in-cols nil
  "When true, draw arguments in columns as with switches and
  options.")

(defun magit-key-mode-draw-args (args)
  "Draw the args part of the menu."
  (magit-key-mode-draw-buttons
   "Args"
   args
   (lambda (x)
     (format "(%s) %s"
             (nth 2 x)
             (propertize (gethash (nth 2 x) magit-key-mode-current-args "")
                         'face 'widget-field)))
   (not magit-key-mode-args-in-cols)))

(defun magit-key-mode-draw-switches (switches)
  "Draw the switches part of the menu."
  (magit-key-mode-draw-buttons
   "Switches"
   switches
   (lambda (x)
     (format "(%s)" (let ((s (nth 2 x)))
                      (if (member s magit-key-mode-current-options)
                        (propertize s 'face 'font-lock-warning-face)
                        s))))))

(defun magit-key-mode-draw-actions (actions)
  "Draw the actions part of the menu."
  (magit-key-mode-draw-buttons "Actions" actions nil))

(defun magit-key-mode-draw-buttons (section xs maker
                                    &optional one-col-each)
  (when xs
    (magit-key-mode-draw-header section)
    (magit-key-mode-draw-in-cols
     (mapcar (lambda (x)
               (let* ((head (propertize (car x) 'face 'font-lock-builtin-face))
                      (desc (nth 1 x))
                      (more (and maker (funcall maker x)))
                      (text (format " %s: %s%s%s"
                                    head desc (if more " " "") (or more ""))))
                 (propertize text 'key-group-executor (car x))))
             xs)
     one-col-each)))

(defun magit-key-mode-draw-in-cols (strings one-col-each)
  "Given a list of strings, print in columns (using `insert'). If
ONE-COL-EACH is true then don't columify, but rather, draw each
item on one line."
  (let ((longest-act (apply 'max (mapcar 'length strings))))
    (while strings
      (let ((str (car strings)))
        (let ((padding (make-string (- (+ longest-act 3) (length str)) ? )))
          (insert str)
          (if (or one-col-each
                  (and (> (+ (length padding) ;
                             (current-column)
                             longest-act)
                          (window-width))
                       (cdr strings)))
              (insert "\n")
            (insert padding))))
      (setq strings (cdr strings))))
  (insert "\n"))

(defun magit-key-mode-draw (for-group)
  "Function used to draw actions, switches and parameters."
  (let* ((options (magit-key-mode-options-for-group for-group))
         (switches (cdr (assoc 'switches options)))
         (arguments (cdr (assoc 'arguments options)))
         (actions (cdr (assoc 'actions options))))
    (magit-key-mode-draw-switches switches)
    (magit-key-mode-draw-args arguments)
    (magit-key-mode-draw-actions actions)
    (insert "\n")))

(defun magit-key-mode-de-generate (group)
  "Unbind the function for GROUP."
  (fmakunbound
   (intern (concat "magit-key-mode-popup-" (symbol-name group)))))

(defun magit-key-mode-generate (group)
  "Generate the key-group menu for GROUP"
  (let ((opts (magit-key-mode-options-for-group group)))
    (eval
     `(defun ,(intern (concat "magit-key-mode-popup-" (symbol-name group))) nil
        ,(concat "Key menu for " (symbol-name group))
        (interactive)
        (magit-key-mode (quote ,group))))))

;; create the interactive functions for the key mode popups (which are
;; applied in the top-level key maps)
(mapc (lambda (g)
        (magit-key-mode-generate (car g)))
      magit-key-mode-groups)

(provide 'magit-key-mode)