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Merge pull request #1228 from mhcerri/mu4e-improved-thread-prefix 

mu4e: improved thread prefix
This commit is contained in:
Dirk-Jan C. Binnema 2018-04-25 09:45:14 +03:00 committed by GitHub
parent 59e24f0234 adc56249da
commit b9d2046a6e
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 125 additions and 37 deletions
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8
lib/mu-container.c
View File

@ -571,7 +571,8 @@ count_colons (const char *str)
static MuMsgIterThreadInfo*
thread_info_new (gchar *threadpath, gboolean root, gboolean first_child,
gboolean empty_parent, gboolean has_child, gboolean is_dup)
gboolean last_child, gboolean empty_parent,
gboolean has_child, gboolean is_dup)
{
MuMsgIterThreadInfo *ti;
@ -582,6 +583,7 @@ thread_info_new (gchar *threadpath, gboolean root, gboolean first_child,
ti->prop = MU_MSG_ITER_THREAD_PROP_NONE;
ti->prop |= root ? MU_MSG_ITER_THREAD_PROP_ROOT : 0;
ti->prop |= first_child ? MU_MSG_ITER_THREAD_PROP_FIRST_CHILD : 0;
ti->prop |= last_child ? MU_MSG_ITER_THREAD_PROP_LAST_CHILD : 0;
ti->prop |= empty_parent ? MU_MSG_ITER_THREAD_PROP_EMPTY_PARENT : 0;
ti->prop |= is_dup ? MU_MSG_ITER_THREAD_PROP_DUP : 0;
ti->prop |= has_child ? MU_MSG_ITER_THREAD_PROP_HAS_CHILD : 0;
@ -610,12 +612,13 @@ static void
add_to_thread_info_hash (GHashTable *thread_info_hash, MuContainer *c,
char *threadpath)
{
gboolean is_root, first_child, empty_parent, is_dup, has_child;
gboolean is_root, first_child, last_child, empty_parent, is_dup, has_child;
/* 'root' means we're a child of the dummy root-container */
is_root = (c->parent == NULL);
first_child = is_root ? FALSE : (c->parent->child == c);
last_child = is_root ? FALSE : (c->next == NULL);
empty_parent = is_root ? FALSE : (!c->parent->msg);
is_dup = c->flags & MU_CONTAINER_FLAG_DUP;
has_child = c->child ? TRUE : FALSE;
@ -625,6 +628,7 @@ add_to_thread_info_hash (GHashTable *thread_info_hash, MuContainer *c,
thread_info_new (threadpath,
is_root,
first_child,
last_child,
empty_parent,
has_child,
is_dup));

7
lib/mu-msg-iter.h
View File

@ -163,9 +163,10 @@ enum _MuMsgIterThreadProp {
MU_MSG_ITER_THREAD_PROP_ROOT = 1 << 0,
MU_MSG_ITER_THREAD_PROP_FIRST_CHILD = 1 << 1,
MU_MSG_ITER_THREAD_PROP_EMPTY_PARENT = 1 << 2,
MU_MSG_ITER_THREAD_PROP_DUP = 1 << 3,
MU_MSG_ITER_THREAD_PROP_HAS_CHILD = 1 << 4
MU_MSG_ITER_THREAD_PROP_LAST_CHILD = 1 << 2,
MU_MSG_ITER_THREAD_PROP_EMPTY_PARENT = 1 << 3,
MU_MSG_ITER_THREAD_PROP_DUP = 1 << 4,
MU_MSG_ITER_THREAD_PROP_HAS_CHILD = 1 << 5
};
typedef guint8 MuMsgIterThreadProp;

4
lib/mu-msg-sexp.c
View File

@ -434,11 +434,13 @@ static void
append_sexp_thread_info (GString *gstr, const MuMsgIterThreadInfo *ti)
{
g_string_append_printf
(gstr, "\t:thread (:path \"%s\" :level %u%s%s%s%s)\n",
(gstr, "\t:thread (:path \"%s\" :level %u%s%s%s%s%s)\n",
ti->threadpath,
ti->level,
ti->prop & MU_MSG_ITER_THREAD_PROP_FIRST_CHILD ?
" :first-child t" : "",
ti->prop & MU_MSG_ITER_THREAD_PROP_LAST_CHILD ?
" :last-child t" : "",
ti->prop & MU_MSG_ITER_THREAD_PROP_EMPTY_PARENT ?
" :empty-parent t" : "",
ti->prop & MU_MSG_ITER_THREAD_PROP_DUP ?

124
mu4e/mu4e-headers.el
View File

@ -232,11 +232,39 @@ one of: `:date', `:subject', `:size', `:prio', `:from', `:to.',
(defvar mu4e-headers-unread-mark '("u" . "⎕") "Unread.")
;; thread prefix marks
(defvar mu4e-headers-has-child-prefix '("+" . "◼ ") "Parent.")
(defvar mu4e-headers-empty-parent-prefix '("-" . "◽ ") "Orphan.")
(defvar mu4e-headers-first-child-prefix '("\\" . "┗▶") "First child.")
(defvar mu4e-headers-duplicate-prefix '("=" . "≡ ") "Duplicate.")
(defvar mu4e-headers-default-prefix '("|" . "│ ") "Default.")
(defvar mu4e-headers-thread-child-prefix '("├>" . "┣▶ ")
"Prefix for messages in sub threads that do have a following sibling.
This variable is only used when mu4e-headers-new-thread-style is non-nil.")
(defvar mu4e-headers-thread-last-child-prefix '("└>" . "┗▶ ")
"Prefix for messages in sub threads that do not have a following sibling.
This variable is only used when mu4e-headers-new-thread-style is non-nil.")
(defvar mu4e-headers-thread-connection-prefix '("│" . "┃ ")
"Prefix to connect sibling messages that do not follow each other.
This prefix should have the same length as `mu4e-headers-thread-blank-prefix'.
This variable is only used when mu4e-headers-new-thread-style is non-nil.")
(defvar mu4e-headers-thread-blank-prefix '(" " . " ")
"Prefix to separate non connected messages.
This prefix should have the same length as `mu4e-headers-thread-connection-prefix'.
This variable is only used when mu4e-headers-new-thread-style is non-nil.")
(defvar mu4e-headers-thread-orphan-prefix '("" . "")
"Prefix for orphan messages.
This variable is only used when mu4e-headers-new-thread-style is non-nil.")
(defvar mu4e-headers-thread-duplicate-prefix '("=" . "≡ ")
"Prefix for duplicate messages.
This variable is only used when mu4e-headers-new-thread-style is non-nil.")
(defvar mu4e-headers-actions
'( ("capture message" . mu4e-action-capture-message)
@ -411,26 +439,78 @@ into a string."
(or name email "?"))) contacts ", "))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defsubst mu4e~headers-thread-prefix-map (type)
"Return the thread prefix based on the symbol TYPE."
(let ((get-prefix
(lambda (cell)
(if mu4e-use-fancy-chars (cdr cell) (car cell)))))
(case type
('child (funcall get-prefix mu4e-headers-thread-child-prefix))
('last-child (funcall get-prefix mu4e-headers-thread-last-child-prefix))
('connection (funcall get-prefix mu4e-headers-thread-connection-prefix))
('blank (funcall get-prefix mu4e-headers-thread-blank-prefix))
('orphan (funcall get-prefix mu4e-headers-thread-orphan-prefix))
('duplicate (funcall get-prefix mu4e-headers-thread-duplicate-prefix))
(t "?"))))
;; In order to print a thread tree with all the message connections,
;; it's necessary to keep track of all sub levels that still have
;; following messages. For each level, mu4e~headers-thread-state keeps
;; the value t for a connection or nil otherwise.
(defvar-local mu4e~headers-thread-state '())
(defsubst mu4e~headers-thread-prefix (thread)
"Calculate the thread prefix based on thread info THREAD."
(when thread
(let ((get-prefix
(lambda (cell) (if mu4e-use-fancy-chars (cdr cell) (car cell)))))
(concat
(make-string (* (if (plist-get thread :empty-parent) 0 1)
(plist-get thread :level)) ?\s)
(cond
((plist-get thread :has-child)
(funcall get-prefix mu4e-headers-has-child-prefix))
((plist-get thread :empty-parent)
(funcall get-prefix mu4e-headers-empty-parent-prefix))
((plist-get thread :first-child)
(funcall get-prefix mu4e-headers-first-child-prefix))
((plist-get thread :duplicate)
(funcall get-prefix mu4e-headers-duplicate-prefix))
(t
(funcall get-prefix mu4e-headers-default-prefix)))
" "))))
(let ((prefix "")
(level (plist-get thread :level))
(has-child (plist-get thread :has-child))
(empty-parent (plist-get thread :empty-parent))
(first-child (plist-get thread :first-child))
(last-child (plist-get thread :last-child))
(duplicate (plist-get thread :duplicate)))
;; Do not prefix root messages.
(if (or (= level 0) empty-parent)
(setq mu4e~headers-thread-state '()))
(if (> level 0)
(let* ((length (length mu4e~headers-thread-state))
(padding (make-list (max 0 (- level length)) nil)))
;; Trim and pad the state to ensure a message will
;; always be shown with the correct identation, even if
;; a broken thread is returned. It's trimmed to level-1
;; because the current level has always an connection
;; and it used a special formatting.
(setq mu4e~headers-thread-state
(subseq (append mu4e~headers-thread-state padding)
0 (- level 1)))
;; Prepare the thread prefix.
(setq prefix
(concat
;; Current mu4e~headers-thread-state, composed by
;; connections or blanks.
(mapconcat
(lambda (s)
(if s (mu4e~headers-thread-prefix-map 'connection)
(mu4e~headers-thread-prefix-map 'blank)))
mu4e~headers-thread-state "")
;; Current entry.
(if last-child (mu4e~headers-thread-prefix-map 'last-child)
(mu4e~headers-thread-prefix-map 'child))))))
;; If a new sub-thread will follow (has-child) and the current
;; one is still not done (not last-child), then a new
;; connection needs to be added to the tree-state. It's not
;; necessary to a blank (nil), because padding will handle
;; that.
(if (and has-child (not last-child))
(setq mu4e~headers-thread-state
(append mu4e~headers-thread-state '(t))))
;; Return the thread prefix.
(format "%s%s%s"
prefix
(if empty-parent
(mu4e~headers-thread-prefix-map 'orphan) "")
(if duplicate
(mu4e~headers-thread-prefix-map 'duplicate) "")))))
(defsubst mu4e~headers-flags-str (flags)
"Get a display string for the flags.

19
mu4e/mu4e.texi
View File

@ -787,15 +787,16 @@ An example headers view:
@cartouche
@verbatim
Date V Flgs From/To List Subject
06:32 Nu To Edmund Dantès GstDev + Re: Gstreamer-V4L...
15:08 Nu Abbé Busoni GstDev + Re: Gstreamer-V...
18:20 Nu Pierre Morrel GstDev \ Re: Gstreamer...
2013-03-18 S Jacopo EmacsUsr + emacs server on win...
2013-03-18 S Mercédès EmacsUsr \ RE: emacs server ...
2013-03-18 S Beachamp EmacsUsr + Re: Copying a whole...
22:07 Nu Albert de Moncerf EmacsUsr \ Re: Copying a who...
2013-03-18 S Gaspard Caderousse GstDev | Issue with GESSimpl...
2013-03-18 Ss Baron Danglars GuileUsr | Guile-SDL 0.4.2 ava...
06:32 Nu To Edmund Dantès GstDev Gstreamer-V4L2SINK ...
15:08 Nu Abbé Busoni GstDev ├> ...
18:20 Nu Pierre Morrel GstDev │└> ...
07:48 Nu To Edmund Dantès GstDev └> ...
2013-03-18 S Jacopo EmacsUsr emacs server on win...
2013-03-18 S Mercédès EmacsUsr └> ...
2013-03-18 S Beachamp EmacsUsr Re: Copying a whole...
22:07 Nu Albert de Moncerf EmacsUsr └> ...
2013-03-18 S Gaspard Caderousse GstDev Issue with GESSimpl...
2013-03-18 Ss Baron Danglars GuileUsr Guile-SDL 0.4.2 ava...
End of search results
@end verbatim
@end cartouche