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Passthrough input when explicitly reading events and keys

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When any of these functions are called, Emacs expects to receive all
input events until they return. Unfortunately, there doesn't appear to
be a reliable way to detect that these functions are currently running
other than advising them.

* exwm-input.el (exwm-input--init): Advise low-level input reading
functions to bind 'exwm-input-line-mode-passthrough' to t when called.
(exwm-input--exit): Unadvise.
(exwm-input--call-with-passthrough): The advice.
(exwm-input--passthrough-functions): The functions we now advise.
This commit is contained in:
Steven Allen 2023-12-29 14:07:08 -08:00
parent 56db521a3e
commit 8ea607ba85
1 changed files with 18 additions and 1 deletions
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19
exwm-input.el
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@ -102,6 +102,13 @@ defined in `exwm-mode-map' here."
(defconst exwm-input--update-focus-interval 0.01
"Time interval (in seconds) for accumulating input focus update requests.")
(defconst exwm-input--passthrough-functions '(read-char
read-char-exclusive
read-key-sequence-vector
read-key-sequence
read-event)
"Low-level functions that read events and need to be exempted from EXWM's input handling.")
(defvar exwm-input--during-command nil
"Indicate whether between `pre-command-hook' and `post-command-hook'.")
@ -1158,6 +1165,11 @@ One use is to access the keymap bound to KEYS (as prefix keys) in `char-mode'."
(exwm--log)
(exwm-input--on-minibuffer-exit)))
(defun exwm-input--call-with-passthrough (function &rest args)
"Bind `exwm-input-line-mode-passthrough' and call the specified FUNCTION with ARGS."
(let ((exwm-input-line-mode-passthrough t))
(apply function args)))
(defun exwm-input--init ()
"Initialize the keyboard module."
(exwm--log)
@ -1213,7 +1225,10 @@ One use is to access the keymap bound to KEYS (as prefix keys) in `char-mode'."
(run-with-idle-timer 0 t #'exwm-input--on-echo-area-dirty))
(add-hook 'echo-area-clear-hook #'exwm-input--on-echo-area-clear)
;; Update focus when buffer list updates
(add-hook 'buffer-list-update-hook #'exwm-input--on-buffer-list-update))
(add-hook 'buffer-list-update-hook #'exwm-input--on-buffer-list-update)
(dolist (fun exwm-input--passthrough-functions)
(advice-add fun :around #'exwm-input--call-with-passthrough)))
(defun exwm-input--post-init ()
"The second stage in the initialization of the input module."
@ -1223,6 +1238,8 @@ One use is to access the keymap bound to KEYS (as prefix keys) in `char-mode'."
(defun exwm-input--exit ()
"Exit the input module."
(exwm--log)
(dolist (fun exwm-input--passthrough-functions)
(advice-remove fun #'exwm-input--call-with-passthrough))
(exwm-input--unset-simulation-keys)
(remove-hook 'pre-command-hook #'exwm-input--on-pre-command)
(remove-hook 'post-command-hook #'exwm-input--on-post-command)