1 ;;; notmuch-hello.el --- welcome to notmuch, a frontend -*- lexical-binding: t -*-
3 ;; Copyright © David Edmondson
5 ;; This file is part of Notmuch.
7 ;; Notmuch is free software: you can redistribute it and/or modify it
8 ;; under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation, either version 3 of the License, or
10 ;; (at your option) any later version.
12 ;; Notmuch is distributed in the hope that it will be useful, but
13 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 ;; General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with Notmuch. If not, see <https://www.gnu.org/licenses/>.
20 ;; Authors: David Edmondson <dme@dme.org>
26 (require 'wid-edit) ; For `widget-forward'.
28 (require 'notmuch-lib)
29 (require 'notmuch-mua)
31 (declare-function notmuch-search "notmuch"
32 (&optional query oldest-first target-thread target-line continuation))
33 (declare-function notmuch-poll "notmuch" ())
34 (declare-function notmuch-tree "notmuch-tree"
35 (&optional query query-context target buffer-name open-target unthreaded))
36 (declare-function notmuch-unthreaded
37 (&optional query query-context target buffer-name open-target))
42 (defun notmuch-saved-search-get (saved-search field)
43 "Get FIELD from SAVED-SEARCH.
45 If SAVED-SEARCH is a plist, this is just `plist-get', but for
46 backwards compatibility, this also deals with the two other
47 possible formats for SAVED-SEARCH: cons cells (NAME . QUERY) and
48 lists (NAME QUERY COUNT-QUERY)."
50 ((keywordp (car saved-search))
51 (plist-get saved-search field))
52 ;; It is not a plist so it is an old-style entry.
53 ((consp (cdr saved-search))
54 (pcase-let ((`(,name ,query ,count-query) saved-search))
58 (:count-query count-query)
61 (pcase-let ((`(,name . ,query) saved-search))
67 (defun notmuch-hello-saved-search-to-plist (saved-search)
68 "Return a copy of SAVED-SEARCH in plist form.
70 If saved search is a plist then just return a copy. In other
71 cases, for backwards compatibility, convert to plist form and
73 (if (keywordp (car saved-search))
74 (copy-sequence saved-search)
75 (let ((fields (list :name :query :count-query))
77 (dolist (field fields plist-search)
78 (let ((string (notmuch-saved-search-get saved-search field)))
80 (setq plist-search (append plist-search (list field string)))))))))
82 (defun notmuch-hello--saved-searches-to-plist (symbol)
83 "Extract a saved-search variable into plist form.
85 The new style saved search is just a plist, but for backwards
86 compatibility we use this function to extract old style saved
87 searches so they still work in customize."
88 (let ((saved-searches (default-value symbol)))
89 (mapcar #'notmuch-hello-saved-search-to-plist saved-searches)))
91 (define-widget 'notmuch-saved-search-plist 'list
92 "A single saved search property list."
94 :args '((list :inline t
96 (group :format "%v" :inline t
97 (const :format " Name: " :name)
98 (string :format "%v"))
99 (group :format "%v" :inline t
100 (const :format " Query: " :query)
101 (string :format "%v")))
104 (group :format "%v" :inline t
105 (const :format "Shortcut key: " :key)
106 (key-sequence :format "%v"))
107 (group :format "%v" :inline t
108 (const :format "Count-Query: " :count-query)
109 (string :format "%v"))
110 (group :format "%v" :inline t
111 (const :format "" :sort-order)
112 (choice :tag " Sort Order"
113 (const :tag "Default" nil)
114 (const :tag "Oldest-first" oldest-first)
115 (const :tag "Newest-first" newest-first)))
116 (group :format "%v" :inline t
117 (const :format "" :search-type)
118 (choice :tag " Search Type"
119 (const :tag "Search mode" nil)
120 (const :tag "Tree mode" tree)
121 (const :tag "Unthreaded mode" unthreaded))))))
123 (defcustom notmuch-saved-searches
124 `((:name "inbox" :query "tag:inbox" :key ,(kbd "i"))
125 (:name "unread" :query "tag:unread" :key ,(kbd "u"))
126 (:name "flagged" :query "tag:flagged" :key ,(kbd "f"))
127 (:name "sent" :query "tag:sent" :key ,(kbd "t"))
128 (:name "drafts" :query "tag:draft" :key ,(kbd "d"))
129 (:name "all mail" :query "*" :key ,(kbd "a")))
130 "A list of saved searches to display.
132 The saved search can be given in 3 forms. The preferred way is as
133 a plist. Supported properties are
135 :name Name of the search (required).
136 :query Search to run (required).
137 :key Optional shortcut key for `notmuch-jump-search'.
138 :count-query Optional extra query to generate the count
139 shown. If not present then the :query property
141 :sort-order Specify the sort order to be used for the search.
142 Possible values are `oldest-first', `newest-first'
143 or nil. Nil means use the default sort order.
144 :search-type Specify whether to run the search in search-mode,
145 tree mode or unthreaded mode. Set to 'tree to specify tree
146 mode, 'unthreaded to specify unthreaded mode, and set to nil
147 (or anything except tree and unthreaded) to specify search mode.
149 Other accepted forms are a cons cell of the form (NAME . QUERY)
150 or a list of the form (NAME QUERY COUNT-QUERY)."
151 ;; The saved-search format is also used by the all-tags notmuch-hello
152 ;; section. This section generates its own saved-search list in one of
153 ;; the latter two forms.
154 :get 'notmuch-hello--saved-searches-to-plist
155 :type '(repeat notmuch-saved-search-plist)
156 :tag "List of Saved Searches"
157 :group 'notmuch-hello)
159 (defcustom notmuch-hello-recent-searches-max 10
160 "The number of recent searches to display."
162 :group 'notmuch-hello)
164 (defcustom notmuch-show-empty-saved-searches nil
165 "Should saved searches with no messages be listed?"
167 :group 'notmuch-hello)
169 (defun notmuch-sort-saved-searches (saved-searches)
170 "Generate an alphabetically sorted saved searches list."
171 (sort (copy-sequence saved-searches)
173 (string< (notmuch-saved-search-get a :name)
174 (notmuch-saved-search-get b :name)))))
176 (defcustom notmuch-saved-search-sort-function nil
177 "Function used to sort the saved searches for the notmuch-hello view.
179 This variable controls how saved searches should be sorted. No
180 sorting (nil) displays the saved searches in the order they are
181 stored in `notmuch-saved-searches'. Sort alphabetically sorts the
182 saved searches in alphabetical order. Custom sort function should
183 be a function or a lambda expression that takes the saved
184 searches list as a parameter, and returns a new saved searches
185 list to be used. For compatibility with the various saved-search
186 formats it should use notmuch-saved-search-get to access the
187 fields of the search."
188 :type '(choice (const :tag "No sorting" nil)
189 (const :tag "Sort alphabetically" notmuch-sort-saved-searches)
190 (function :tag "Custom sort function"
191 :value notmuch-sort-saved-searches))
192 :group 'notmuch-hello)
194 (defvar notmuch-hello-indent 4
195 "How much to indent non-headers.")
197 (defimage notmuch-hello-logo ((:type png :file "notmuch-logo.png")))
199 (defcustom notmuch-show-logo t
200 "Should the notmuch logo be shown?"
202 :group 'notmuch-hello)
204 (defcustom notmuch-show-all-tags-list nil
205 "Should all tags be shown in the notmuch-hello view?"
207 :group 'notmuch-hello)
209 (defcustom notmuch-hello-tag-list-make-query nil
210 "Function or string to generate queries for the all tags list.
212 This variable controls which query results are shown for each tag
213 in the \"all tags\" list. If nil, it will use all messages with
214 that tag. If this is set to a string, it is used as a filter for
215 messages having that tag (equivalent to \"tag:TAG and (THIS-VARIABLE)\").
216 Finally this can be a function that will be called for each tag and
217 should return a filter for that tag, or nil to hide the tag."
218 :type '(choice (const :tag "All messages" nil)
219 (const :tag "Unread messages" "tag:unread")
220 (string :tag "Custom filter"
222 (function :tag "Custom filter function"))
223 :group 'notmuch-hello)
225 (defcustom notmuch-hello-hide-tags nil
226 "List of tags to be hidden in the \"all tags\"-section."
227 :type '(repeat string)
228 :group 'notmuch-hello)
230 (defface notmuch-hello-logo-background
233 (:background "#5f5f5f"))
236 (:background "white")))
237 "Background colour for the notmuch logo."
238 :group 'notmuch-hello
239 :group 'notmuch-faces)
241 (defcustom notmuch-column-control t
242 "Controls the number of columns for saved searches/tags in notmuch view.
244 This variable has three potential sets of values:
246 - t: automatically calculate the number of columns possible based
247 on the tags to be shown and the window width,
248 - an integer: a lower bound on the number of characters that will
249 be used to display each column,
250 - a float: a fraction of the window width that is the lower bound
251 on the number of characters that should be used for each
255 - if you would like two columns of tags, set this to 0.5.
256 - if you would like a single column of tags, set this to 1.0.
257 - if you would like tags to be 30 characters wide, set this to
259 - if you don't want to worry about all of this nonsense, leave
262 (const :tag "Automatically calculated" t)
263 (integer :tag "Number of characters")
264 (float :tag "Fraction of window"))
265 :group 'notmuch-hello)
267 (defcustom notmuch-hello-thousands-separator " "
268 "The string used as a thousands separator.
270 Typically \",\" in the US and UK and \".\" or \" \" in Europe.
271 The latter is recommended in the SI/ISO 31-0 standard and by the
272 International Bureau of Weights and Measures."
274 :group 'notmuch-hello)
276 (defcustom notmuch-hello-mode-hook nil
277 "Functions called after entering `notmuch-hello-mode'."
279 :group 'notmuch-hello
280 :group 'notmuch-hooks)
282 (defcustom notmuch-hello-refresh-hook nil
283 "Functions called after updating a `notmuch-hello' buffer."
285 :group 'notmuch-hello
286 :group 'notmuch-hooks)
288 (defconst notmuch-hello-url "https://notmuchmail.org"
289 "The `notmuch' web site.")
291 (defvar notmuch-hello-custom-section-options
292 '((:filter (string :tag "Filter for each tag"))
293 (:filter-count (string :tag "Different filter to generate message counts"))
294 (:initially-hidden (const :tag "Hide this section on startup" t))
295 (:show-empty-searches (const :tag "Show queries with no matching messages" t))
296 (:hide-if-empty (const :tag "Hide this section if all queries are empty
297 \(and not shown by show-empty-searches)" t)))
298 "Various customization-options for notmuch-hello-tags/query-section.")
300 (define-widget 'notmuch-hello-tags-section 'lazy
301 "Customize-type for notmuch-hello tag-list sections."
302 :tag "Customized tag-list section (see docstring for details)"
305 (const :tag "" notmuch-hello-insert-tags-section)
306 (string :tag "Title for this section")
310 ,(append notmuch-hello-custom-section-options
311 '((:hide-tags (repeat :tag "Tags that will be hidden"
314 (define-widget 'notmuch-hello-query-section 'lazy
315 "Customize-type for custom saved-search-like sections"
316 :tag "Customized queries section (see docstring for details)"
319 (const :tag "" notmuch-hello-insert-searches)
320 (string :tag "Title for this section")
321 (repeat :tag "Queries"
322 (cons (string :tag "Name") (string :tag "Query")))
323 (plist :inline t :options ,notmuch-hello-custom-section-options)))
325 (defcustom notmuch-hello-sections
326 (list #'notmuch-hello-insert-header
327 #'notmuch-hello-insert-saved-searches
328 #'notmuch-hello-insert-search
329 #'notmuch-hello-insert-recent-searches
330 #'notmuch-hello-insert-alltags
331 #'notmuch-hello-insert-footer)
332 "Sections for notmuch-hello.
334 The list contains functions which are used to construct sections in
335 notmuch-hello buffer. When notmuch-hello buffer is constructed,
336 these functions are run in the order they appear in this list. Each
337 function produces a section simply by adding content to the current
338 buffer. A section should not end with an empty line, because a
339 newline will be inserted after each section by `notmuch-hello'.
341 Each function should take no arguments. The return value is
344 For convenience an element can also be a list of the form (FUNC ARG1
345 ARG2 .. ARGN) in which case FUNC will be applied to the rest of the
348 A \"Customized tag-list section\" item in the customize-interface
349 displays a list of all tags, optionally hiding some of them. It
350 is also possible to filter the list of messages matching each tag
351 by an additional filter query. Similarly, the count of messages
352 displayed next to the buttons can be generated by applying a
353 different filter to the tag query. These filters are also
354 supported for \"Customized queries section\" items."
355 :group 'notmuch-hello
358 (choice (function-item notmuch-hello-insert-header)
359 (function-item notmuch-hello-insert-saved-searches)
360 (function-item notmuch-hello-insert-search)
361 (function-item notmuch-hello-insert-recent-searches)
362 (function-item notmuch-hello-insert-alltags)
363 (function-item notmuch-hello-insert-footer)
364 (function-item notmuch-hello-insert-inbox)
365 notmuch-hello-tags-section
366 notmuch-hello-query-section
367 (function :tag "Custom section"))))
369 (defcustom notmuch-hello-auto-refresh t
370 "Automatically refresh when returning to the notmuch-hello buffer."
371 :group 'notmuch-hello
374 ;;; Internal variables
376 (defvar notmuch-hello-hidden-sections nil
377 "List of sections titles whose contents are hidden.")
379 (defvar notmuch-hello-first-run t
380 "True if `notmuch-hello' is run for the first time, set to nil afterwards.")
382 ;;; Widgets for inserters
384 (define-widget 'notmuch-search-item 'item
387 :value-create 'notmuch-search-item-value-create)
389 (defun notmuch-search-item-value-create (widget)
390 (let ((value (widget-get widget :value)))
391 (widget-insert (make-string notmuch-hello-indent ?\s))
392 (widget-create 'editable-field
393 :size (widget-get widget :size)
395 :action #'notmuch-hello-search
398 (widget-create 'push-button
400 :notify #'notmuch-hello-add-saved-search
403 (widget-create 'push-button
405 :notify #'notmuch-hello-delete-search-from-history
408 (defun notmuch-search-item-field-width ()
409 (max 8 ; Don't let the search boxes be less than 8 characters wide.
411 notmuch-hello-indent ; space at bol
412 notmuch-hello-indent ; space at eol
413 1 ; for the space before the [save] button
414 6 ; for the [save] button
415 1 ; for the space before the [del] button
416 5))) ; for the [del] button
420 (defun notmuch-hello-search (widget &rest _event)
421 (let ((search (widget-value widget)))
423 (setq search (string-trim search))
424 (let ((history-delete-duplicates t))
425 (add-to-history 'notmuch-search-history search)))
426 (notmuch-search search notmuch-search-oldest-first)))
428 (defun notmuch-hello-add-saved-search (widget &rest _event)
429 (let ((search (widget-value (widget-get widget :parent)))
430 (name (completing-read "Name for saved search: "
431 notmuch-saved-searches)))
432 ;; If an existing saved search with this name exists, remove it.
433 (setq notmuch-saved-searches
434 (cl-loop for elem in notmuch-saved-searches
435 unless (equal name (notmuch-saved-search-get elem :name))
438 (customize-save-variable 'notmuch-saved-searches
439 (add-to-list 'notmuch-saved-searches
440 (list :name name :query search) t))
441 (message "Saved '%s' as '%s'." search name)
442 (notmuch-hello-update)))
444 (defun notmuch-hello-delete-search-from-history (widget &rest _event)
445 (when (y-or-n-p "Are you sure you want to delete this search? ")
446 (let ((search (widget-value (widget-get widget :parent))))
447 (setq notmuch-search-history
448 (delete search notmuch-search-history)))
449 (notmuch-hello-update)))
453 ;; `notmuch-hello-query-counts', `notmuch-hello-nice-number' and
454 ;; `notmuch-hello-insert-buttons' are used outside this section.
455 ;; All other functions that are defined in this section are only
456 ;; used by these two functions.
458 (defun notmuch-hello-longest-label (searches-alist)
459 (or (cl-loop for elem in searches-alist
460 maximize (length (notmuch-saved-search-get elem :name)))
463 (defun notmuch-hello-reflect-generate-row (ncols nrows row list)
464 (let ((len (length list)))
465 (cl-loop for col from 0 to (- ncols 1)
466 collect (let ((offset (+ (* nrows col) row)))
469 ;; Don't forget to insert an empty slot in the
470 ;; output matrix if there is no corresponding
471 ;; value in the input matrix.
474 (defun notmuch-hello-reflect (list ncols)
475 "Reflect a `ncols' wide matrix represented by `list' along the
478 (let ((nrows (ceiling (length list) ncols)))
479 (cl-loop for row from 0 to (- nrows 1)
480 append (notmuch-hello-reflect-generate-row ncols nrows row list))))
482 (defun notmuch-hello-widget-search (widget &rest _ignore)
483 (cl-case (widget-get widget :notmuch-search-type)
485 (notmuch-tree (widget-get widget :notmuch-search-terms)))
487 (notmuch-unthreaded (widget-get widget :notmuch-search-terms)))
489 (notmuch-search (widget-get widget :notmuch-search-terms)
490 (widget-get widget :notmuch-search-oldest-first)))))
492 (defun notmuch-saved-search-count (search)
493 (car (process-lines notmuch-command "count" search)))
495 (defun notmuch-hello-tags-per-line (widest)
496 "Determine how many tags to show per line and how wide they
497 should be. Returns a cons cell `(tags-per-line width)'."
500 ((integerp notmuch-column-control)
502 (/ (- (window-width) notmuch-hello-indent)
503 ;; Count is 9 wide (8 digits plus space), 1 for the space
505 (+ 9 1 (max notmuch-column-control widest)))))
506 ((floatp notmuch-column-control)
507 (let* ((available-width (- (window-width) notmuch-hello-indent))
508 (proposed-width (max (* available-width notmuch-column-control)
510 (floor available-width proposed-width)))
513 (/ (- (window-width) notmuch-hello-indent)
514 ;; Count is 9 wide (8 digits plus space), 1 for the space
517 (cons tags-per-line (/ (max 1
518 (- (window-width) notmuch-hello-indent
519 ;; Count is 9 wide (8 digits plus
520 ;; space), 1 for the space after the
522 (* tags-per-line (+ 9 1))))
525 (defun notmuch-hello-filtered-query (query filter)
526 "Constructs a query to search all messages matching QUERY and FILTER.
528 If FILTER is a string, it is directly used in the returned query.
530 If FILTER is a function, it is called with QUERY as a parameter and
531 the string it returns is used as the query. If nil is returned,
534 Otherwise, FILTER is ignored."
536 ((functionp filter) (funcall filter query))
538 (concat "(" query ") and (" filter ")"))
541 (defun notmuch-hello-query-counts (query-list &rest options)
542 "Compute list of counts of matched messages from QUERY-LIST.
544 QUERY-LIST must be a list of saved-searches. Ideally each of
545 these is a plist but other options are available for backwards
546 compatibility: see `notmuch-saved-searches' for details.
548 The result is a list of plists each of which includes the
549 properties :name NAME, :query QUERY and :count COUNT, together
550 with any properties in the original saved-search.
552 The values :show-empty-searches, :filter and :filter-count from
553 options will be handled as specified for
554 `notmuch-hello-insert-searches'."
556 (dolist (elem query-list nil)
557 (let ((count-query (or (notmuch-saved-search-get elem :count-query)
558 (notmuch-saved-search-get elem :query))))
560 (replace-regexp-in-string
562 (notmuch-hello-filtered-query count-query
563 (or (plist-get options :filter-count)
564 (plist-get options :filter))))
566 (unless (= (call-process-region (point-min) (point-max) notmuch-command
567 t t nil "count" "--batch") 0)
568 (notmuch-logged-error
569 "notmuch count --batch failed"
570 "Please check that the notmuch CLI is new enough to support `count
571 --batch'. In general we recommend running matching versions of
572 the CLI and emacs interface."))
573 (goto-char (point-min))
576 (let* ((elem-plist (notmuch-hello-saved-search-to-plist elem))
577 (search-query (plist-get elem-plist :query))
578 (filtered-query (notmuch-hello-filtered-query
579 search-query (plist-get options :filter)))
580 (message-count (prog1 (read (current-buffer))
582 (when (and filtered-query (or (plist-get options :show-empty-searches)
583 (> message-count 0)))
584 (setq elem-plist (plist-put elem-plist :query filtered-query))
585 (list (plist-put elem-plist :count message-count)))))
588 (defun notmuch-hello-nice-number (n)
591 (push (% n 1000) result)
593 (setq result (or result '(0)))
595 (number-to-string (car result))
596 (mapcar (lambda (elem)
597 (format "%s%03d" notmuch-hello-thousands-separator elem))
600 (defun notmuch-hello-insert-buttons (searches)
601 "Insert buttons for SEARCHES.
603 SEARCHES must be a list of plists each of which should contain at
604 least the properties :name NAME :query QUERY and :count COUNT,
605 where QUERY is the query to start when the button for the
606 corresponding entry is activated, and COUNT should be the number
607 of messages matching the query. Such a plist can be computed
608 with `notmuch-hello-query-counts'."
609 (let* ((widest (notmuch-hello-longest-label searches))
610 (tags-and-width (notmuch-hello-tags-per-line widest))
611 (tags-per-line (car tags-and-width))
612 (column-width (cdr tags-and-width))
615 (reordered-list (notmuch-hello-reflect searches tags-per-line))
616 ;; Hack the display of the buttons used.
617 (widget-push-button-prefix "")
618 (widget-push-button-suffix ""))
619 ;; dme: It feels as though there should be a better way to
620 ;; implement this loop than using an incrementing counter.
622 ;; (not elem) indicates an empty slot in the matrix.
624 (when (> column-indent 0)
625 (widget-insert (make-string column-indent ? )))
626 (let* ((name (plist-get elem :name))
627 (query (plist-get elem :query))
628 (oldest-first (cl-case (plist-get elem :sort-order)
631 (otherwise notmuch-search-oldest-first)))
632 (search-type (plist-get elem :search-type))
633 (msg-count (plist-get elem :count)))
634 (widget-insert (format "%8s "
635 (notmuch-hello-nice-number msg-count)))
636 (widget-create 'push-button
637 :notify #'notmuch-hello-widget-search
638 :notmuch-search-terms query
639 :notmuch-search-oldest-first oldest-first
640 :notmuch-search-type search-type
643 (1+ (max 0 (- column-width (length name)))))))
645 (when (eq (% count tags-per-line) 0)
646 (setq column-indent 0)
647 (widget-insert "\n")))
649 ;; If the last line was not full (and hence did not include a
650 ;; carriage return), insert one now.
651 (unless (eq (% count tags-per-line) 0)
652 (widget-insert "\n"))))
656 (defun notmuch-hello-update ()
657 "Update the notmuch-hello buffer."
658 ;; Lazy - rebuild everything.
662 (defun notmuch-hello-window-configuration-change ()
663 "Hook function to update the hello buffer when it is switched to."
664 (let ((hello-buf (get-buffer "*notmuch-hello*"))
666 ;; Consider all windows in the currently selected frame, since
667 ;; that's where the configuration change happened. This also
668 ;; refreshes our snapshot of all windows, so we have to do this
669 ;; even if we know we won't refresh (e.g., hello-buf is null).
670 (dolist (window (window-list))
671 (let ((last-buf (window-parameter window 'notmuch-hello-last-buffer))
672 (cur-buf (window-buffer window)))
673 (unless (eq last-buf cur-buf)
674 ;; This window changed or is new. Update recorded buffer
676 (set-window-parameter window 'notmuch-hello-last-buffer cur-buf)
677 (when (and (eq cur-buf hello-buf) last-buf)
678 ;; The user just switched to hello in this window (hello
679 ;; is currently visible, was not visible on the last
680 ;; configuration change, and this is not a new window)
681 (setq do-refresh t)))))
682 (when (and do-refresh notmuch-hello-auto-refresh)
683 ;; Refresh hello as soon as we get back to redisplay. On Emacs
684 ;; 24, we can't do it right here because something in this
685 ;; hook's call stack overrides hello's point placement.
686 ;; FIXME And on Emacs releases that we still support?
687 (run-at-time nil nil #'notmuch-hello t))
690 (remove-hook 'window-configuration-change-hook
691 #'notmuch-hello-window-configuration-change))))
693 (defvar notmuch-hello-mode-map
694 ;; Inherit both widget-keymap and notmuch-common-keymap. We have
695 ;; to use make-sparse-keymap to force this to be a new keymap (so
696 ;; that when we modify map it does not modify widget-keymap).
697 (let ((map (make-composed-keymap (list (make-sparse-keymap) widget-keymap))))
698 (set-keymap-parent map notmuch-common-keymap)
699 (define-key map (kbd "<C-tab>") 'widget-backward)
701 "Keymap for \"notmuch hello\" buffers.")
703 (define-derived-mode notmuch-hello-mode fundamental-mode "notmuch-hello"
704 "Major mode for convenient notmuch navigation. This is your entry portal into notmuch.
706 Saved searches are \"bookmarks\" for arbitrary queries. Hit RET
707 or click on a saved search to view matching threads. Edit saved
708 searches with the `edit' button. Type `\\[notmuch-jump-search]'
709 in any Notmuch screen for quick access to saved searches that
712 Type new searches in the search box and hit RET to view matching
713 threads. Hit RET in a recent search box to re-submit a previous
714 search. Edit it first if you like. Save a recent search to saved
715 searches with the `save' button.
717 Hit `\\[notmuch-search]' or `\\[notmuch-tree]' in any Notmuch
718 screen to search for messages and view matching threads or
719 messages, respectively. Recent searches are available in the
722 Expand the all tags view with the `show' button (and collapse
723 again with the `hide' button). Hit RET or click on a tag name to
724 view matching threads.
726 Hit `\\[notmuch-refresh-this-buffer]' to refresh the screen and
727 `\\[notmuch-bury-or-kill-this-buffer]' to quit.
729 The screen may be customized via `\\[customize]'.
731 Complete list of currently available key bindings:
733 \\{notmuch-hello-mode-map}"
734 (setq notmuch-buffer-refresh-function #'notmuch-hello-update))
738 (defun notmuch-hello-generate-tag-alist (&optional hide-tags)
739 "Return an alist from tags to queries to display in the all-tags section."
740 (cl-mapcan (lambda (tag)
741 (and (not (member tag hide-tags))
744 (notmuch-escape-boolean-term tag))))))
745 (process-lines notmuch-command "search" "--output=tags" "*")))
747 (defun notmuch-hello-insert-header ()
748 "Insert the default notmuch-hello header."
749 (when notmuch-show-logo
750 (let ((image notmuch-hello-logo))
751 ;; The notmuch logo uses transparency. That can display poorly
752 ;; when inserting the image into an emacs buffer (black logo on
753 ;; a black background), so force the background colour of the
754 ;; image. We use a face to represent the colour so that
755 ;; `defface' can be used to declare the different possible
756 ;; colours, which depend on whether the frame has a light or
758 (setq image (cons 'image
762 'notmuch-hello-logo-background)))))
763 (insert-image image))
766 (widget-insert "Welcome to ")
767 ;; Hack the display of the links used.
768 (let ((widget-link-prefix "")
769 (widget-link-suffix ""))
771 :notify (lambda (&rest _ignore)
772 (browse-url notmuch-hello-url))
773 :help-echo "Visit the notmuch website."
776 (widget-insert "You have ")
778 :notify (lambda (&rest _ignore)
779 (notmuch-hello-update))
781 (notmuch-hello-nice-number
783 (car (process-lines notmuch-command "count")))))
784 (widget-insert " messages.\n")))
786 (defun notmuch-hello-insert-saved-searches ()
787 "Insert the saved-searches section."
788 (let ((searches (notmuch-hello-query-counts
789 (if notmuch-saved-search-sort-function
790 (funcall notmuch-saved-search-sort-function
791 notmuch-saved-searches)
792 notmuch-saved-searches)
793 :show-empty-searches notmuch-show-empty-saved-searches)))
795 (widget-insert "Saved searches: ")
796 (widget-create 'push-button
797 :notify (lambda (&rest _ignore)
798 (customize-variable 'notmuch-saved-searches))
800 (widget-insert "\n\n")
801 (let ((start (point)))
802 (notmuch-hello-insert-buttons searches)
803 (indent-rigidly start (point) notmuch-hello-indent)))))
805 (defun notmuch-hello-insert-search ()
806 "Insert a search widget."
807 (widget-insert "Search: ")
808 (widget-create 'editable-field
809 ;; Leave some space at the start and end of the
811 :size (max 8 (- (window-width) notmuch-hello-indent
812 (length "Search: ")))
813 :action #'notmuch-hello-search)
814 ;; Add an invisible dot to make `widget-end-of-line' ignore
815 ;; trailing spaces in the search widget field. A dot is used
816 ;; instead of a space to make `show-trailing-whitespace'
817 ;; happy, i.e. avoid it marking the whole line as trailing
819 (widget-insert (propertize "." 'invisible t))
820 (widget-insert "\n"))
822 (defun notmuch-hello-insert-recent-searches ()
823 "Insert recent searches."
824 (when notmuch-search-history
825 (widget-insert "Recent searches: ")
828 :notify (lambda (&rest _ignore)
829 (when (y-or-n-p "Are you sure you want to clear the searches? ")
830 (setq notmuch-search-history nil)
831 (notmuch-hello-update)))
833 (widget-insert "\n\n")
834 (let ((width (notmuch-search-item-field-width)))
835 (dolist (search (seq-take notmuch-search-history
836 notmuch-hello-recent-searches-max))
837 (widget-create 'notmuch-search-item :value search :size width)))))
839 (defun notmuch-hello-insert-searches (title query-list &rest options)
840 "Insert a section with TITLE showing a list of buttons made from QUERY-LIST.
842 QUERY-LIST should ideally be a plist but for backwards
843 compatibility other forms are also accepted (see
844 `notmuch-saved-searches' for details). The plist should
845 contain keys :name and :query; if :count-query is also present
846 then it specifies an alternate query to be used to generate the
847 count for the associated search.
849 Supports the following entries in OPTIONS as a plist:
850 :initially-hidden - if non-nil, section will be hidden on startup
851 :show-empty-searches - show buttons with no matching messages
852 :hide-if-empty - hide if no buttons would be shown
853 (only makes sense without :show-empty-searches)
854 :filter - This can be a function that takes the search query as its argument and
855 returns a filter to be used in conjunction with the query for that search or nil
856 to hide the element. This can also be a string that is used as a combined with
857 each query using \"and\".
858 :filter-count - Separate filter to generate the count displayed each search. Accepts
859 the same values as :filter. If :filter and :filter-count are specified, this
860 will be used instead of :filter, not in conjunction with it."
861 (widget-insert title ": ")
862 (when (and notmuch-hello-first-run (plist-get options :initially-hidden))
863 (add-to-list 'notmuch-hello-hidden-sections title))
864 (let ((is-hidden (member title notmuch-hello-hidden-sections))
867 (widget-create 'push-button
868 :notify `(lambda (widget &rest _ignore)
869 (setq notmuch-hello-hidden-sections
870 (delete ,title notmuch-hello-hidden-sections))
871 (notmuch-hello-update))
873 (widget-create 'push-button
874 :notify `(lambda (widget &rest _ignore)
875 (add-to-list 'notmuch-hello-hidden-sections
877 (notmuch-hello-update))
881 (let ((searches (apply 'notmuch-hello-query-counts query-list options)))
882 (when (or (not (plist-get options :hide-if-empty))
885 (notmuch-hello-insert-buttons searches)
886 (indent-rigidly start (point) notmuch-hello-indent))))))
888 (defun notmuch-hello-insert-tags-section (&optional title &rest options)
889 "Insert a section displaying all tags with message counts.
891 TITLE defaults to \"All tags\".
892 Allowed options are those accepted by `notmuch-hello-insert-searches' and the
895 :hide-tags - List of tags that should be excluded."
896 (apply 'notmuch-hello-insert-searches
897 (or title "All tags")
898 (notmuch-hello-generate-tag-alist (plist-get options :hide-tags))
901 (defun notmuch-hello-insert-inbox ()
902 "Show an entry for each saved search and inboxed messages for each tag."
903 (notmuch-hello-insert-searches "What's in your inbox"
905 notmuch-saved-searches
906 (notmuch-hello-generate-tag-alist))
907 :filter "tag:inbox"))
909 (defun notmuch-hello-insert-alltags ()
910 "Insert a section displaying all tags and associated message counts."
911 (notmuch-hello-insert-tags-section
913 :initially-hidden (not notmuch-show-all-tags-list)
914 :hide-tags notmuch-hello-hide-tags
915 :filter notmuch-hello-tag-list-make-query))
917 (defun notmuch-hello-insert-footer ()
918 "Insert the notmuch-hello footer."
919 (let ((start (point)))
920 (widget-insert "Hit `?' for context-sensitive help in any Notmuch screen.\n")
921 (widget-insert "Customize ")
923 :notify (lambda (&rest _ignore)
924 (customize-group 'notmuch))
925 :button-prefix "" :button-suffix ""
927 (widget-insert " or ")
929 :notify (lambda (&rest _ignore)
930 (customize-variable 'notmuch-hello-sections))
931 :button-prefix "" :button-suffix ""
933 (let ((fill-column (- (window-width) notmuch-hello-indent)))
934 (center-region start (point)))))
939 (defun notmuch-hello (&optional no-display)
940 "Run notmuch and display saved searches, known tags, etc."
942 (notmuch-assert-cli-sane)
943 ;; This may cause a window configuration change, so if the
944 ;; auto-refresh hook is already installed, avoid recursive refresh.
945 (let ((notmuch-hello-auto-refresh nil))
947 (set-buffer "*notmuch-hello*")
948 (pop-to-buffer-same-window "*notmuch-hello*")))
949 ;; Install auto-refresh hook
950 (when notmuch-hello-auto-refresh
951 (add-hook 'window-configuration-change-hook
952 #'notmuch-hello-window-configuration-change))
953 (let ((target-line (line-number-at-pos))
954 (target-column (current-column))
955 (inhibit-read-only t))
956 ;; Delete all editable widget fields. Editable widget fields are
957 ;; tracked in a buffer local variable `widget-field-list' (and
958 ;; others). If we do `erase-buffer' without properly deleting the
959 ;; widgets, some widget-related functions are confused later.
960 (mapc 'widget-delete widget-field-list)
962 (unless (eq major-mode 'notmuch-hello-mode)
963 (notmuch-hello-mode))
964 (let ((all (overlay-lists)))
965 ;; Delete all the overlays.
966 (mapc 'delete-overlay (car all))
967 (mapc 'delete-overlay (cdr all)))
970 (let ((point-before (point)))
971 (if (functionp section)
973 (apply (car section) (cdr section)))
974 ;; don't insert a newline when the previous section didn't
976 (unless (eq (point) point-before)
977 (widget-insert "\n"))))
978 notmuch-hello-sections)
980 ;; Move point back to where it was before refresh. Use line and
981 ;; column instead of point directly to be insensitive to additions
982 ;; and removals of text within earlier lines.
983 (goto-char (point-min))
984 (forward-line (1- target-line))
985 (move-to-column target-column))
986 (run-hooks 'notmuch-hello-refresh-hook)
987 (setq notmuch-hello-first-run nil))
991 (provide 'notmuch-hello)
993 ;;; notmuch-hello.el ends here