From: martin rudalics <rudalics@gmx.at>
To: "Štěpán Němec" <stepnem@gmail.com>, 7381@debbugs.gnu.org
Subject: bug#7381: 24.0.50; Provide a hook run when a window is selected
Date: Sat, 12 Jan 2019 10:15:24 +0100 [thread overview]
Message-ID: <5C39B02C.6040309@gmx.at> (raw)
In-Reply-To: <87k4kjfldo.fsf@gmail.com>
;; fixed 7381 27.1
;; quit
> The subject line says it all: could we get a `window-selected-hook' or
> `window-selected-functions' or something?
>
> Use case: I wanted to make myself a command to select the last selected
> window (i.e., repeating the command would toggle between two windows).
>
> After some head-scratching, the best I could come up with is this:
>
> (defun .goto-mru-window ()
> (interactive)
> (select-window (frame-parameter nil '.last-selected-window)))
>
> (defadvice select-window (before .save-selected-window activate)
> (set-frame-parameter nil '.last-selected-window (selected-window)))
>
> ...which seems to work most of the time, but using an advice doesn't
> feel that great, esp. with C functions.
Current master now provides a hook run when redisplay detects that the
selected window has changed wrt last redisplay. The hook is called
'window-selection-change-functions' and is described in detail in the
Elisp manual. Below I sketch how that hook could be used to provide
the behavior you asked for.
martin
(defvar .old-selected-window (selected-window))
(defun .update-old-selected-window (frame)
(unless (eq .update-old-selected-window old-selected-window)
(setq .old-selected-window (old-selected-window))))
(add-hook 'window-selection-change-functions '.update-old-selected-window)
(defun .goto-mru-window ()
(interactive)
(select-window .old-selected-window))
(global-set-key [(control .)] '.goto-mru-window)
next prev parent reply other threads:[~2019-01-12 9:15 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-12 0:14 bug#7381: 24.0.50; Provide a hook run when a window is selected Štěpán Němec
2010-11-12 0:53 ` Lennart Borgman
2010-11-12 11:26 ` Štěpán Němec
2010-11-12 8:16 ` martin rudalics
2010-11-12 11:31 ` Štěpán Němec
2010-11-12 13:05 ` martin rudalics
2010-11-12 14:53 ` Štěpán Němec
2010-11-12 16:31 ` martin rudalics
2010-11-12 17:09 ` Štěpán Němec
2010-11-12 18:09 ` martin rudalics
2010-11-12 18:40 ` Štěpán Němec
2010-11-13 8:32 ` martin rudalics
2010-11-13 12:13 ` Štěpán Němec
2010-11-13 13:57 ` martin rudalics
2010-11-13 15:23 ` Štěpán Němec
2010-11-13 16:02 ` martin rudalics
2010-11-13 16:03 ` martin rudalics
2010-11-13 18:49 ` Chong Yidong
2010-12-23 17:07 ` Štěpán Němec
2010-12-24 9:31 ` martin rudalics
2010-12-29 11:21 ` Chong Yidong
2010-12-30 16:06 ` Richard Stallman
2010-11-12 20:55 ` Stefan Monnier
2019-01-12 9:15 ` martin rudalics [this message]
2019-01-12 11:46 ` Štěpán Němec
2019-01-12 14:12 ` martin rudalics
2019-01-12 14:58 ` Štěpán Němec
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