* Window focus event
@ 2021-12-14 20:31 lxsameer
2021-12-16 8:08 ` Michael Heerdegen
0 siblings, 1 reply; 7+ messages in thread
From: lxsameer @ 2021-12-14 20:31 UTC (permalink / raw)
To: emacs-devel@gnu.org
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Hey folks,
I was wondering if there is a hook or a way to detect when focus changes from a window to another?
I know about the obsolete `focous-in-hook'. But it seems that its replacement doesn't do the same and works only on frame level.
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* Re: Window focus event
2021-12-14 20:31 Window focus event lxsameer
@ 2021-12-16 8:08 ` Michael Heerdegen
2021-12-16 14:30 ` Stefan Monnier
0 siblings, 1 reply; 7+ messages in thread
From: Michael Heerdegen @ 2021-12-16 8:08 UTC (permalink / raw)
To: lxsameer; +Cc: emacs-devel@gnu.org
lxsameer <lxsameer@lxsameer.com> writes:
> Hey folks,
Hello.
> I was wondering if there is a hook or a way to detect when focus
> changes from a window to another?
>
> I know about the obsolete `focous-in-hook'. But it seems that its
> replacement doesn't do the same and works only on frame level.
This question would probably better fit and get more attention in
emacs-help. People seem to be quite busy here ATM.
Regarding the question: I would say `window-configuration-change-hook'
or `window-state-change-hook' are the best fitting hooks for the task.
May depend on your use case.
Note that Emacs sometimes internally selects windows temporarily
(`with-selected-window'), so doing something for every window selection
is most of the time not what you want.
Michael.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Window focus event
2021-12-16 8:08 ` Michael Heerdegen
@ 2021-12-16 14:30 ` Stefan Monnier
2021-12-17 10:28 ` lxsameer
0 siblings, 1 reply; 7+ messages in thread
From: Stefan Monnier @ 2021-12-16 14:30 UTC (permalink / raw)
To: Michael Heerdegen; +Cc: lxsameer, emacs-devel@gnu.org
> Regarding the question: I would say `window-configuration-change-hook'
> or `window-state-change-hook' are the best fitting hooks for the task.
> May depend on your use case.
Indeed.
> Note that Emacs sometimes internally selects windows temporarily
> (`with-selected-window'), so doing something for every window selection
> is most of the time not what you want.
Note that neither of the above two hooks are run during
`with-selected-window`, AFAIK.
Stefan
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Window focus event
2021-12-16 14:30 ` Stefan Monnier
@ 2021-12-17 10:28 ` lxsameer
2021-12-17 13:43 ` Michael Heerdegen
2021-12-17 19:51 ` Stefan Kangas
0 siblings, 2 replies; 7+ messages in thread
From: lxsameer @ 2021-12-17 10:28 UTC (permalink / raw)
To: Stefan Monnier; +Cc: Michael Heerdegen, emacs-devel@gnu.org
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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, December 16th, 2021 at 3:30 PM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> > Regarding the question: I would say `window-configuration-change-hook'
>
> > or `window-state-change-hook' are the best fitting hooks for the task.
> >
> > May depend on your use case.
>
> Indeed.
>
> > Note that Emacs sometimes internally selects windows temporarily
> >
> > (`with-selected-window'), so doing something for every window selection
> >
> > is most of the time not what you want.
>
> Note that neither of the above two hooks are run during
>
> `with-selected-window`, AFAIK.
>
> Stefan
Thanks folks, In the deprecation message of the `focus-in-hook` family, it refers to `after-focus-change-function`. Isn't it better to change that message to include these two hooks as well?
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* Re: Window focus event
2021-12-17 10:28 ` lxsameer
@ 2021-12-17 13:43 ` Michael Heerdegen
2021-12-17 14:28 ` lxsameer
2021-12-17 19:51 ` Stefan Kangas
1 sibling, 1 reply; 7+ messages in thread
From: Michael Heerdegen @ 2021-12-17 13:43 UTC (permalink / raw)
To: lxsameer; +Cc: Stefan Monnier, emacs-devel@gnu.org
lxsameer <lxsameer@lxsameer.com> writes:
> Thanks folks, In the deprecation message of the `focus-in-hook`
> family, it refers to `after-focus-change-function`. Isn't it better to
> change that message to include these two hooks as well?
AFAIU, input focus is a per frame concept. Window selection is
something different. There are overlaps (the selected window is
typically in the frame that has input focus), but I don't see that
`window-configuration-change-hook' is a replacement for `focus-in-hook'
like `after-focus-change-function' is.
You can change the selected window without changing focus. It can be
that no frame has input focus. If a frame gets focus, that doesn't
necessarily change the window configuration, etc. I hope my mental
model is correct.
Is there anything you could do using `focus-in-hook' that you can't do with
`after-focus-change-function'?
Michael.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Window focus event
2021-12-17 13:43 ` Michael Heerdegen
@ 2021-12-17 14:28 ` lxsameer
0 siblings, 0 replies; 7+ messages in thread
From: lxsameer @ 2021-12-17 14:28 UTC (permalink / raw)
To: Michael Heerdegen; +Cc: Stefan Monnier, emacs-devel@gnu.org
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Thanks Michael, I think my mental model was wrong. Thanks for the clarification.
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Friday, December 17th, 2021 at 2:43 PM, Michael Heerdegen <michael_heerdegen@web.de> wrote:
> lxsameer lxsameer@lxsameer.com writes:
>
> > Thanks folks, In the deprecation message of the `focus-in-hook`
> >
> > family, it refers to `after-focus-change-function`. Isn't it better to
> >
> > change that message to include these two hooks as well?
>
> AFAIU, input focus is a per frame concept. Window selection is
>
> something different. There are overlaps (the selected window is
>
> typically in the frame that has input focus), but I don't see that
>
> `window-configuration-change-hook' is a replacement for` focus-in-hook'
>
> like `after-focus-change-function' is. You can change the selected window without changing focus. It can be that no frame has input focus. If a frame gets focus, that doesn't necessarily change the window configuration, etc. I hope my mental model is correct. Is there anything you could do using` focus-in-hook' that you can't do with
>
> `after-focus-change-function'?
>
> Michael.
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Window focus event
2021-12-17 10:28 ` lxsameer
2021-12-17 13:43 ` Michael Heerdegen
@ 2021-12-17 19:51 ` Stefan Kangas
1 sibling, 0 replies; 7+ messages in thread
From: Stefan Kangas @ 2021-12-17 19:51 UTC (permalink / raw)
To: lxsameer, Stefan Monnier; +Cc: Michael Heerdegen, emacs-devel@gnu.org
lxsameer <lxsameer@lxsameer.com> writes:
> Thanks folks, In the deprecation message of the `focus-in-hook`
> family, it refers to `after-focus-change-function`. Isn't it better to
> change that message to include these two hooks as well?
See also Bug#51862.
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2021-12-17 19:51 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-12-14 20:31 Window focus event lxsameer
2021-12-16 8:08 ` Michael Heerdegen
2021-12-16 14:30 ` Stefan Monnier
2021-12-17 10:28 ` lxsameer
2021-12-17 13:43 ` Michael Heerdegen
2021-12-17 14:28 ` lxsameer
2021-12-17 19:51 ` Stefan Kangas
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