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mu4e: show actual keybindings in main-view 

Let the main-screen show a representation of the *actual* keybindings
rather than assuming the defaults.

For that to work, we need to invoke mu4e-main-mode earlier; add a new
hook mu4e-main-mode-rendered-hook which is invoked after rendering is
complete.

Add a few helpers for this to mu4e-helpers.
This commit is contained in:
Dirk-Jan C. Binnema 2023-02-11 11:59:07 +02:00
parent 5df98d57cb
commit 6559f0f86e
2 changed files with 101 additions and 75 deletions
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17
mu4e/mu4e-helpers.el
View File

@ -471,5 +471,22 @@ COMPONENTS."
(mapconcat (lambda (part) (if (stringp part) part ""))
(cons directory components) "/")))
(defun mu4e-string-replace (from-string to-string in-string)
"Replace FROM-STRING with TO-STRING in IN-STRING each time it occurs.
Mu4e version of emacs 28's string-replace."
(replace-regexp-in-string (regexp-quote from-string)
to-string in-string nil 'literal))
(defun mu4e-key-description (cmd)
"Get the textual form of current binding to interactive function CMD.
If it is unbound, return nil. If there are multiple bindings,
return the shortest."
;; not a perfect heuristic: e.g. '<up>' is longer that 'C-p'
(car-safe
(seq-sort (lambda (b1 b2)
(< (length b1) (length b2)))
(seq-map #'key-description
(where-is-internal cmd)))))
(provide 'mu4e-helpers)
;;; mu4e-helpers.el ends here

159
mu4e/mu4e-main.el
View File

@ -59,6 +59,11 @@ the personal addresses."
:type 'boolean
:group 'mu4e-main)
(defcustom mu4e-main-rendered-hook nil
"Hook run after the main-view has been rendered."
:type 'hook
:group 'mu4e-main)
;;; Mode
(define-derived-mode mu4e-org-mode org-mode "mu4e:org"
@ -114,13 +119,11 @@ the personal addresses."
(define-key map "m" #'mu4e--main-toggle-mail-sending-mode)
(define-key map "f" #'smtpmail-send-queued-mail)
;;
(define-key map "U" #'mu4e-update-mail-and-index)
(define-key map (kbd "C-S-u") #'mu4e-update-mail-and-index)
;; for terminal users
(define-key map (kbd "C-c C-u") #'mu4e-update-mail-and-index)
(define-key map "U" #'mu4e-update-mail-and-index)
(define-key map "S" #'mu4e-kill-update-mail)
(define-key map (kbd "C-S-u") #'mu4e-update-mail-and-index)
(define-key map ";" #'mu4e-context-switch)
(define-key map "$" #'mu4e-show-log)
(define-key map "A" #'mu4e-about)
@ -161,44 +164,37 @@ the personal addresses."
;; reset the baseline and get updated results.
(mu4e--query-items-refresh 'reset-baseline))))
(defun mu4e--main-action-str (str &optional func-or-shortcut)
"Highlight the first occurrence of [.] in STR.
If FUNC-OR-SHORTCUT is non-nil and if it is a function, call it
when STR is clicked (using RET or mouse-2); if FUNC-OR-SHORTCUT is
a string, execute the corresponding keyboard action when it is
clicked. If HIGHLIGHT is non-nil, hightlight the name."
(let ((newstr
(replace-regexp-in-string
"\\[\\(..?\\)\\]"
(lambda(m)
(format "[%s]"
(propertize (match-string 1 m) 'face 'mu4e-highlight-face)))
str))
(map (make-sparse-keymap))
(func (if (functionp func-or-shortcut)
func-or-shortcut
(if (stringp func-or-shortcut)
(lambda()(interactive)
(execute-kbd-macro func-or-shortcut))))))
(define-key map [mouse-2] func)
(define-key map (kbd "RET") func)
(put-text-property 0 (length newstr) 'keymap map newstr)
(put-text-property (string-match "\\[.+$" newstr)
;; only subtract one from length of newstr if we're
;; actually consuming the first letter (e.g.
;; `func-or-shortcut' is a function, meaning we put
;; braces around the first letter of `str')
(if (stringp func-or-shortcut)
(length newstr)
(- (length newstr) 1))
'mouse-face 'highlight newstr) newstr))
(defun mu4e--main-action (title cmd &optional bindstr)
"Produce main view action string with TITLE.
(defun mu4e--main-items (data shortcut max-length)
"Display the entries for the bookmark/maildir menu
- SHORTCUT is a single character which is the first
character of the keyboard shortcut
- ITEMS is a list of items, for format see `(mu4e-query-data)'
- MAX-LENGTH is the maximum length for an item name"
When activated, invoke interactive function CMD.
In the result, used the TITLE string, with the first occurrence
of [@] replace by a textual replacement for eiter the first
binding to CMD or, if specified, BINDSTR.
If the first letter after the [@] is equal to the last letter of the
binding representation, remove that first letter."
(let* ((bindstr (or bindstr (mu4e-key-description cmd)
(mu4e-error "No binding for %s" cmd)))
(title ;; remove first letter afrer [] if it equal last of binding
(mu4e-string-replace
(concat "[@]" (substring bindstr -1)) "[@]" title))
(title ;; insert binding in [@]
(mu4e-string-replace
"[@]" (format "[%s]" (propertize bindstr 'face 'mu4e-highlight-face))
title))
(map (make-sparse-keymap)))
(define-key map [mouse-2] cmd)
(define-key map (kbd "RET") cmd)
(propertize title 'keymap map)))
(defun mu4e--main-items (item-type max-length)
"Produce the string with menu-items for ITEM-TYPE.
ITEM-TYPE is a symbol, either `bookmarks' or `maildirs'.
MAX-LENGTH is the maximum length of the item titles; this is used
for aligning them."
(mapconcat
(lambda (item)
(cl-destructuring-bind
@ -206,20 +202,33 @@ character of the keyboard shortcut
;; hide items explicitly hidden, without key or wrong category.
(if hide
""
(concat
(mu4e--main-action-str
(format "\t* [%s] %s "
(format "%c%c" shortcut key)
(propertize
name
'face (if favorite 'mu4e-header-key-face nil)
'help-echo query)))
(format "%s%s\n"
(make-string (- max-length (string-width name)) ?\s)
(mu4e--query-item-display-counts item))))))
;; only item which have a single-character :key
(mu4e-filter-single-key data)
""))
(let ((qfunc-pair
(cond
((eq item-type 'maildirs)
(cons #'mu4e-search-maildir name))
((eq item-type 'bookmarks)
(cons #'mu4e-search-bookmark (mu4e-get-bookmark-query key)))
(t
(mu4e-error "Invalid item-type %s" item-type)))))
(concat
(mu4e--main-action
;; main title
(format "\t* [@] %s "
(propertize
name
'face (if favorite 'mu4e-header-key-face nil)
'help-echo query))
;; function to call when activated
(lambda () (interactive)
(funcall (car qfunc-pair) (cdr qfunc-pair)))
;; custom key binding string
(concat (mu4e-key-description (car qfunc-pair)) (string key)))
;; counts
(format "%s%s\n"
(make-string (- max-length (string-width name)) ?\s)
(mu4e--query-item-display-counts item)))))))
;; only items which have a single-character :key
(mu4e-filter-single-key (mu4e-query-items item-type)) ""))
(defun mu4e--key-val (key val &optional unit)
"Show a KEY / VAL pair, with optional UNIT."
@ -256,6 +265,7 @@ Otherwise, do nothing."
(max-length (seq-reduce (lambda (a b)
(max a (length (plist-get b :name))))
(mu4e-query-items) 0)))
(mu4e-main-mode)
(erase-buffer)
(insert
"* "
@ -264,33 +274,33 @@ Otherwise, do nothing."
(propertize mu4e-mu-version 'face 'mu4e-header-key-face)
"\n\n"
(propertize " Basics\n\n" 'face 'mu4e-title-face)
(mu4e--main-action-str
"\t* [j]ump to some maildir\n" #'mu4e-search-maildir)
(mu4e--main-action-str
"\t* enter a [s]earch query\n" #'mu4e-search)
(mu4e--main-action-str
"\t* [C]ompose a new message\n" #'mu4e-compose-new)
(mu4e--main-action
"\t* [@]jump to some maildir\n" #'mu4e-search-maildir)
(mu4e--main-action
"\t* enter a [@]search query\n" #'mu4e-search)
(mu4e--main-action
"\t* [@]Compose a new message\n" #'mu4e-compose-new)
"\n"
(propertize " Bookmarks\n\n" 'face 'mu4e-title-face)
(mu4e--main-items (mu4e-query-items 'bookmarks) ?b max-length)
(mu4e--main-items 'bookmarks max-length)
"\n"
(propertize " Maildirs\n\n" 'face 'mu4e-title-face)
(mu4e--main-items (mu4e-query-items 'maildirs) ?j max-length)
(mu4e--main-items 'maildirs max-length)
"\n"
(propertize " Misc\n\n" 'face 'mu4e-title-face)
(mu4e--main-action-str "\t* [;]Switch context\n" #'mu4e-context-switch)
(mu4e--main-action-str "\t* [U]pdate email & database\n"
(mu4e--main-action "\t* [@]Switch context\n" #'mu4e-context-switch)
(mu4e--main-action "\t* [@]Update email & database\n"
#'mu4e-update-mail-and-index)
;; show the queue functions if `smtpmail-queue-dir' is defined
(if (file-directory-p smtpmail-queue-dir)
(mu4e--main-view-queue)
"")
"\n"
(mu4e--main-action-str "\t* [N]ews\n" #'mu4e-news)
(mu4e--main-action-str "\t* [A]bout mu4e\n" #'mu4e-about)
(mu4e--main-action-str "\t* [H]elp\n" #'mu4e-display-manual)
(mu4e--main-action-str "\t* [q]uit\n" #'mu4e-quit)
(mu4e--main-action "\t* [@]News\n" #'mu4e-news)
(mu4e--main-action "\t* [@]About mu4e\n" #'mu4e-about)
(mu4e--main-action "\t* [@]Help\n" #'mu4e-display-manual)
(mu4e--main-action "\t* [@]quit\n" #'mu4e-quit)
"\n"
(propertize " Info\n\n" 'face 'mu4e-title-face)
(mu4e--key-val "last updated"
@ -311,14 +321,13 @@ Otherwise, do nothing."
"Tip: `user-mail-address' ('%s') is not part "
"of mu's addresses; add it with 'mu init
--my-address='") user-mail-address)))
(mu4e-main-mode)
(goto-char pos)))))
(defun mu4e--main-view-queue ()
"Display queue-related actions in the main view."
(concat
(mu4e--main-action-str "\t* toggle [m]ail sending mode "
'mu4e--main-toggle-mail-sending-mode)
(mu4e--main-action "\t* toggle [@]mail sending mode "
#'mu4e--main-toggle-mail-sending-mode)
"(currently "
(propertize (if smtpmail-queue-mail "queued" "direct")
'face 'mu4e-header-key-face)
@ -326,8 +335,8 @@ Otherwise, do nothing."
(let ((queue-size (mu4e--main-queue-size)))
(if (zerop queue-size)
""
(mu4e--main-action-str
(format "\t* [f]lush %s queued %s\n"
(mu4e--main-action
(format "\t* [@]flush %s queued %s\n"
(propertize (int-to-string queue-size)
'face 'mu4e-header-key-face)
(if (> queue-size 1) "mails" "mail"))
@ -355,8 +364,8 @@ instead."
(inhibit-read-only t))
(with-current-buffer buf
(mu4e--main-redraw))
(mu4e-display-buffer buf t)))
(mu4e-display-buffer buf t)
(run-hooks 'mu4e-main-rendered-hook)))
(goto-char (point-min)))
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