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;;; jao-exwm-zathura.el --- running zathura as doc manager -*- lexical-binding: t; -*-
;; Copyright (C) 2026 jao
;; Author: jao <mail@jao.io>
;; Keywords: docs
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
(require 'jao-exwm)
(require 'jao-pdf)
(require 'jao-doc-view)
(require 'jao-afio)
(require 'jao-org-notes)
;;; Zathura support
(defun jao-zathura--buffer-p (b)
(string= "Zathura" (or (buffer-local-value 'exwm-class-name b) "")))
(defun jao-zathura--buffers ()
(seq-filter #'jao-zathura--buffer-p (buffer-list)))
(defun jao-zathura--file-info (b)
(with-current-buffer b
(jao-pdf-zathura-file-info (or exwm-title ""))))
(defun jao-zathura-goto-page (page-no)
(jao-exwm-send-str (format "%sg" page-no)))
;;;###autoload
(defun jao-zathura-open-doc (&optional file-name page-no _height)
(interactive)
(let* ((file-name (expand-file-name (or file-name (buffer-file-name))))
(buffer (seq-find `(lambda (b)
(string= ,file-name
(car (jao-zathura--file-info b))))
(jao-zathura--buffers)))
(page-no (or page-no (jao-doc-view-current-page))))
(when jao-exwm-use-afio (jao-afio-goto-docs))
(if (not buffer)
(jao-exwm-run (if page-no
(format "zathura -P %s '%s'" page-no file-name)
(format "zathura '%s'" file-name)))
(pop-to-buffer buffer)
(when page-no (jao-zathura-goto-page page-no)))
(current-buffer)))
(defun jao-exwm--zathura-setup ()
(when (and (string= exwm-class-name "Zathura")
(not jao-pdf--outline))
(let ((info (jao-zathura--file-info (current-buffer))))
(jao-doc-session-mark (car info))
(jao-doc-session-save)
(doc-view-imenu-index (car info) #'jao-zathura-goto-page))))
(add-hook 'exwm-update-title-hook #'jao-exwm--zathura-setup t)
;;;###autoload
(defun jao-exwm-pdf-zathura-close-all ()
(interactive)
(dolist (b (jao-zathura--buffers))
(ignore-errors
(switch-to-buffer b)
(jao-exwm-send-str "q")))
t)
;;;###autoload
(defun jao-exwm-zathura-goto-org (&optional arg)
(interactive "P")
(when-let* ((info (jao-zathura--file-info (current-buffer)))
(file (jao-org-find-for-pdf (car info))))
(let ((newp (not (file-exists-p file))))
(when (or arg newp) (org-store-link nil t))
(find-file-other-window file)
(when newp
(jao-org-insert-doc-skeleton)
(org-insert-link)))))
;;;###autoload
(defun jao-exwm-zathura-goto-org* ()
(interactive)
(jao-exwm-zathura-goto-org t))
;;;###autoload
(defun jao-exwm-org-store-zathura-link ()
(when-let* ((info (jao-zathura--file-info (current-buffer))))
(let* ((file-name (car info))
(page (cadr info))
(desc (jao-pdf-section-title page file-name)))
(jao-org-links-store-pdf-link file-name page desc))))
;;;###autoload
(defun jao-exwm-pdf-enable-zathura ()
(interactive)
(add-hook 'kill-emacs-query-functions #'jao-exwm-pdf-zathura-close-all t)
(setq jao-pdf-open-in-emacs nil)
(setq jao-org-open-pdf-fun #'jao-zathura-open-doc)
(setq jao-org-links-pdf-store-fun #'jao-exwm-org-store-zathura-link)
(setq jao-open-doc-fun #'jao-zathura-open-doc))
;;;###autoload
(defun jao-exwm-pdf-disable-zathura ()
(interactive)
(remove-hook 'kill-emacs-query-functions #'jao-exwm-pdf-zathura-close-all)
(setq jao-pdf-open-in-emacs t)
(setq jao-org-open-pdf-fun #'jao-find-or-open)
(setq jao-org-links-pdf-store-fun nil)
(setq jao-open-doc-fun #'jao-find-or-open))
;;;###autoload
(defun jao-exwm-org-to-pdf-file ()
(expand-file-name (concat "doc/" (file-name-base buffer-file-name) ".pdf")
(file-name-directory jao-org-notes-dir)))
;;;###autoload
(defun jao-exwm-zathura-goto-pdf ()
(interactive)
(if jao-pdf-open-in-emacs
(jao-org-goto-pdf)
(when-let* ((pdf (jao-exwm-org-to-pdf-file)))
(jao-zathura-open-doc pdf))))
(with-eval-after-load "org"
(define-key org-mode-map (kbd "C-c o") #'jao-exwm-zathura-goto-pdf))
(when (not jao-pdf-open-in-emacs)
(jao-exwm-pdf-enable-zathura))
(defun jao-exwm-select-pdf ()
(interactive)
(let ((b (read-buffer "Document: " nil t
(lambda (b)
(let ((b (cdr b)))
(or (jao-zathura--buffer-p b)
(member (buffer-local-value 'major-mode b)
'(pdf-view-mode doc-view-mode))))))))
(jao-afio-goto-docs)
(pop-to-buffer b)))
(provide 'jao-exwm-zathura)
;;; jao-exwm-zathura.el ends here
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