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Allow for auto updating only visible proced buffers (bug#69784)

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* lisp/proced.el (proced-auto-update-flag): Document 'visible'
value and add it to the custom type.
(proced-auto-update-timer, proced-toggle-auto-update): Take
'visible' value into account.
This commit is contained in:
Rahguzar 2024-03-15 18:46:46 +01:00 • committed by Eli Zaretskii
parent cdd7093e17
commit b2793febca
1 changed files with 31 additions and 15 deletions
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46
lisp/proced.el
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@ -362,9 +362,13 @@ of `proced-grammar-alist'."
:type 'integer)
(defcustom proced-auto-update-flag nil
"Non-nil for auto update of a Proced buffer.
Can be changed interactively via `proced-toggle-auto-update'."
:type 'boolean)
"Non-nil means auto update proced buffers.
Special value `visible' means only update proced buffers that are currently
displayed in a window. Can be changed interactively via
`proced-toggle-auto-update'."
:type '(radio (const :tag "Don't auto update" nil)
(const :tag "Only update visible proced buffers" visible)
(const :tag "Update all proced buffers" t)))
(make-variable-buffer-local 'proced-auto-update-flag)
(defcustom proced-tree-flag nil
@ -951,28 +955,40 @@ Proced buffers."
"Auto-update Proced buffers using `run-at-time'.
If there are no proced buffers, cancel the timer."
(unless (seq-filter (lambda (buf)
(with-current-buffer buf
(when (eq major-mode 'proced-mode)
(if proced-auto-update-flag
(proced-update t t))
t)))
(buffer-list))
(if-let (buffers (match-buffers '(derived-mode . proced-mode)))
(dolist (buf buffers)
(when-let ((flag (buffer-local-value 'proced-auto-update-flag buf))
((or (not (eq flag 'visible))
(get-buffer-window buf 'visible))))
(with-current-buffer buf
(proced-update t t))))
(cancel-timer proced-auto-update-timer)
(setq proced-auto-update-timer nil)))
(defun proced-toggle-auto-update (arg)
"Change whether this Proced buffer is updated automatically.
With prefix ARG, update this buffer automatically if ARG is positive,
otherwise do not update. Sets the variable `proced-auto-update-flag'.
The time interval for updates is specified via `proced-auto-update-interval'."
update the buffer only when the buffer is displayed in a window if ARG is 0,
otherwise do not update. Sets the variable `proced-auto-update-flag' by
cycling between nil, `visible' and t. The time interval for updates is
specified via `proced-auto-update-interval'."
(interactive (list (or current-prefix-arg 'toggle)) proced-mode)
(setq proced-auto-update-flag
(cond ((eq arg 'toggle) (not proced-auto-update-flag))
(arg (> (prefix-numeric-value arg) 0))
(cond ((eq arg 'toggle)
(cond ((not proced-auto-update-flag) 'visible)
((eq proced-auto-update-flag 'visible) t)
(t nil)))
(arg
(setq arg (prefix-numeric-value arg))
(message "%s" arg)
(cond ((> arg 0) t)
((eq arg 0) 'visible)
(t nil)))
(t (not proced-auto-update-flag))))
(message "Proced auto update %s"
(if proced-auto-update-flag "enabled" "disabled")))
(cond ((eq proced-auto-update-flag 'visible) "enabled (only when buffer is visible)")
(proced-auto-update-flag "enabled (unconditionally)")
(t "disabled"))))
;;; Mark