/
lain-popup.el
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/
lain-popup.el
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;; lain-popup.el -*- lexical-binding: t; -*-
;; Thanks to these document and code:
;;
;; https://www.gnu.org/software/emacs/manual/html_node/elisp/Choosing-Window.html
;; https://www.gnu.org/software/emacs/manual/html_node/elisp/Frame-Layouts-with-Side-Windows.html
;; https://www.gnu.org/software/emacs/manual/html_node/elisp/Window-Parameters.html
;; https://www.gnu.org/software/emacs/manual/html_node/elisp/Displaying-Buffers-in-Side-Windows.html
;; https://github.com/emacs-mirror/emacs/blob/master/lisp/window.el
;; https://github.com/hlissner/doom-emacs/blob/develop/modules/ui/popup/autoload/popup.el
;; The idea is to manipulate `display-buffer-alist'
;;
;; (lain/set-popup-rules ;; '("^\\*[Hh]elp" :slot 0 :size 0.35 :select t))
;; ||
;; || will'be translated to this
;; ||
;; (setq
;; display-buffer-alist
;; '(("^\\*[Hh]elp"
;; (lain/popup-main)
;; (actions . (display-buffer-reuse-window
;; display-buffer-in-side-window))
;; (side . bottom)
;; (window-width . 0.5)
;; (window-height . 0.35)
;; (slot . 1)
;; (reusable-frames . visible)
;; (window-parameters
;; (select . t)
;; (quit . t)
;; (popup . t)
;; (mode-line-format . none)
;; (no-other-window . t)))))
;;;###autoload
(defvar lain-popup-alist-default
(list :actions '(display-buffer-reuse-window display-buffer-in-side-window)
:side 'bottom
:size 0.25
:slot 0
:reusable-frames 'visible))
;;;###autoload
(defvar lain-popup-params-defalut
(list :popup t
:quit t
:select nil
:modeline 'none
:no-other-window t))
;;;###autoload
(defun lain/popup-windows ()
(-filter 'lain/popup-window-p (window-list)))
;;;###autoload
(defun lain/popup-window-p (&optional window)
(let ((window (or window (selected-window))))
(and window
(windowp window)
(window-live-p window)
(window-parameter window 'popup))))
;;;###autoload
(defun lain/popup-close (&optional window force-p)
(interactive (list (selected-window) current-prefix-arg))
(let ((window (or window (selected-window))))
(when (and (lain/popup-window-p window)
(or force-p
(window-parameter window 'quit)))
(delete-window window))))
;;;###autoload
(defun lain/popup-close-all (&optional force-p)
(interactive "P")
(--each (lain/popup-windows)
(when (or force-p
(window-parameter it 'quit))
(delete-window it))))
;;;###autoload
(defun lain/popup-close-on-escape ()
(if (lain/popup-window-p)
(lain/popup-close)
(lain/popup-close-all)))
;;;###autoload
(defun lain/popup-raise (window)
(interactive (list (selected-window)))
(unless (lain/popup-window-p window)
(user-error "Can't raise a non-popup window"))
(lain/popup-close window t)
(display-buffer-pop-up-window (current-buffer) nil))
;;;###autoload
(defun lain/popup-main (buffer &optional alist)
(interactive)
(-let* ((origin (selected-window))
((&alist 'actions) alist)
(popup (cl-loop for func in actions
if (funcall func buffer alist)
return it)))
(set-window-dedicated-p popup 'popup)
(let ((select (window-parameter popup 'select)))
(if (functionp select)
(funcall select popup origin)
(select-window (if select popup origin))))
popup))
;;;###autoload
(defun lain/popup-make-rule (rule)
(-let* (((pred . plist) rule)
(alist-keys
(-filter 'keywordp lain-popup-alist-default))
(params-keys
(-filter 'keywordp lain-popup-params-defalut))
(choose
(lambda (key default)
(if (plist-member plist key)
(plist-get plist key)
(plist-get default key))))
(alist
(--map (cons (intern (s-chop-prefix ":" (symbol-name it)))
(funcall choose it lain-popup-alist-default))
(remove :size alist-keys)))
(alist
(cons (cons (if (memq (alist-get 'side alist) '(left right))
'window-width
'window-height)
(funcall choose :size lain-popup-alist-default))
alist))
(params
(--map (cons (intern (s-chop-prefix ":" (symbol-name it)))
(funcall choose it lain-popup-params-defalut))
(remove :modeline params-keys)))
(params
(cons (cons 'mode-line-format
(if (plist-member plist :modeline)
(if (plist-get plist :modeline)
nil
'none)
(plist-get lain-popup-params-defalut :modeline)))
params)))
`(,pred (lain/popup-main)
,@alist
(window-parameters ,@params))))
;;;###autoload
(defun lain/set-popup-rules (&rest rules)
(declare (indent 0))
(setq display-buffer-alist
(let ((-compare-fn (-lambda (a b) (equal (car a) (car b)))))
(-union display-buffer-alist
(-map 'lain/popup-make-rule rules)))))
;; Defalut rules
;; options:
;; modeline: t/nil, default nil
;; select: t/nil/function, default nil
;; quit: t/nil, default t
;; side: top/bottom/left/right, default bottom
;; size: number/function, default 0.25
(lain/set-popup-rules
'("^\\*[Hh]elp" :size 0.35 :select t)
'("^\\*info\\*$" :size 0.45 :select t)
'("^\\*Backtrace" :size 0.35 :quit nil)
'("^ \\*undo-tree\\*" :slot 2 :side right :select t)
'("^\\*Pp Eval" :size shrink-window-if-larger-than-buffer :select ignore)
'("^\\* Regexp Explain \\*$" :size shrink-window-if-larger-than-buffer)
'("^\\*xref\\*$" :size 0.2 :select ignore)
'("^\\*Async Shell Command\\*" :size 0.5 :select t))
(add-hook 'after-init-hook
(lambda () (add-hook 'lain-escape-hook #'lain/popup-close-on-escape t)))
(general-def
"C-c C-p" '(:ignore t :wk "Popup")
"C-c C-p d" 'lain/popup-close-all
"C-c C-p r" 'lain/popup-raise)
;; Hacks
;; Info
(defun lain/popup-info-hack (&rest _)
(when-let* ((win (get-buffer-window "*info*"))
(select (window-parameter win 'select))
(popup-p (lain/popup-window-p win)))
(select-window win)))
(advice-add #'info-lookup-symbol :after #'lain/popup-info-hack)
(provide 'lain-popup)