[PATCH v2 4/5] emacs: add notmuch hello refresh hook to display message count change
Jani Nikula
jani at nikula.org
Sun Sep 2 07:48:36 PDT 2012
Add a notmuch hello refresh hook to display a message about change in
message count in the database since the notmuch-hello buffer was last
refreshed manually (no-display is nil).
Signed-off-by: Jani Nikula <jani at nikula.org>
---
emacs/notmuch-hello.el | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/emacs/notmuch-hello.el b/emacs/notmuch-hello.el
index fa14443..f7a3c95 100644
--- a/emacs/notmuch-hello.el
+++ b/emacs/notmuch-hello.el
@@ -148,6 +148,7 @@ International Bureau of Weights and Measures."
(defcustom notmuch-hello-refresh-hook nil
"Functions called after updating a `notmuch-hello' buffer."
:type 'hook
+ :options '(notmuch-hello-refresh-status-message)
:group 'notmuch-hello
:group 'notmuch-hooks)
@@ -749,6 +750,43 @@ following:
(let ((fill-column (- (window-width) notmuch-hello-indent)))
(center-region start (point)))))
+(defcustom notmuch-hello-refresh-status-query "*"
+ "Query to use for `notmuch-hello-refresh-status-message' hook."
+ :type '(choice (const :tag "All messages" "*")
+ (string :tag "Custom query"
+ :value "tag:inbox"))
+ :group 'notmuch-hello)
+
+(defvar notmuch-hello-refresh-count 0
+ "Number of matching messages when `notmuch-hello' was last run.
+
+Used internally by `notmuch-hello-refresh-status-message'.")
+
+(defun notmuch-hello-refresh-status-message (no-display)
+ "Hook to display a status message when refreshing notmuch-hello buffer.
+
+Display a status message about the difference in message count
+matching `notmuch-hello-refresh-status-query' since the last time
+notmuch-hello was refreshed. Only takes into account explicit
+refreshes (NO-DISPLAY is nil)."
+ (unless no-display
+ (let* ((new-count
+ (string-to-number
+ (car (process-lines notmuch-command "count"
+ notmuch-hello-refresh-status-query))))
+ (diff-count (- new-count notmuch-hello-refresh-count)))
+ (cond
+ ((= notmuch-hello-refresh-count 0)
+ (message "You have %s messages."
+ (notmuch-hello-nice-number new-count)))
+ ((> diff-count 0)
+ (message "You have %s more messages since last refresh."
+ (notmuch-hello-nice-number diff-count)))
+ ((< diff-count 0)
+ (message "You have %s fewer messages since last refresh."
+ (notmuch-hello-nice-number (- diff-count)))))
+ (setq notmuch-hello-refresh-count new-count))))
+
;;;###autoload
(defun notmuch-hello (&optional no-display)
"Run notmuch and display saved searches, known tags, etc.
--
1.7.9.5
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