;;; evil-collection-reftex.el --- Bindings for `reftex'. -*- lexical-binding: t -*-

;; Copyright (C) 2017 Pierre Neidhardt

;; Author: Maximiliano Sandoval <msandova@protonmail.com>
;; Maintainer: James Nguyen <james@jojojames.com>
;; Pierre Neidhardt <mail@ambrevar.xyz>
;; URL: https://github.com/emacs-evil/evil-collection
;; Version: 0.0.1
;; Package-Requires: ((emacs "25.1"))
;; Keywords: evil, reftex, tools

;; This file 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, or (at your
;; option) any later version.
;;
;; This file 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.
;;
;; For a full copy of the GNU General Public License
;; see <http://www.gnu.org/licenses/>.

;;; Commentary:
;; Evil bindings for `reftex-mode'.

;;; Code:
(require 'evil-collection)
(require 'reftex-ref nil t)
(require 'reftex-ref nil t)
(require 'reftex-cite nil t)

(defconst evil-collection-reftex-maps '(reftex-select-shared-map
                                        reftex-toc-mode-map))

;; original code can be found in reftex-ref.el
(setq reftex-select-label-prompt
  "Select: [RET]select [j]next [k]previous [gr]escan [go]context [q]uit [g?]help")

;; original code can be found in reftex-cite.el
(setq reftex-citation-prompt
  "Select: [RET]select [j]next [k]previous [q]uit [g?]help")

;; original at reftex-ref.el
(setq reftex-select-label-help
  " j / k      Go to next/previous label (Cursor motion works as well)
 [ / ]      Go to previous/next section heading.
 c          Reuse last referenced label.
 J          Jump to a specific section, e.g. '3 J' jumps to section 3.
 s          Switch label type.
 gr         Reparse document.
 go / gO     Show context / Show insertion point.
 S          Switch to label menu of external document (with LaTeX package `xr').
 r / R      Toggle \\ref <-> \\vref / Rotate \\ref <=> \\fref <=> \\Fref.
 TAB        Enter a label with completion.
 m / M      Mark/unmark entry.
 x / X      Put all marked entries into one/many \\ref commands.
 q / RET    Quit without referencing / Accept current label.")

;; code can be found in reftex-cite.el
(setq reftex-citation-help
  " j / k      Go to next/previous entry (Cursor motion works as well).
 go / gO     Show citation / Show insertion point.
 q          Quit without inserting \\cite macro into buffer.
 TAB        Enter citation key with completion.
 RET        Accept current entry and create \\cite macro.
 m / M      Mark/Unmark the entry.
 o / O      Create BibTeX file with all marked / unmarked entries.
 X / X      Put all (marked) entries into one/many \\cite commands.")

;;;###autoload
(defun evil-collection-reftex-setup ()
  "Set up `evil' bindings for `reftex'."

  (evil-set-initial-state 'reftex-select-label-mode 'normal)
  (evil-set-initial-state 'reftex-select-bib-mode 'normal)

  (evil-collection-define-key 'normal 'reftex-select-shared-map
    "j" 'reftex-select-next
    "k" 'reftex-select-previous
    (kbd "]]") 'reftex-select-next-heading
    (kbd "[[") 'reftex-select-previous-heading
    (kbd "gj") 'reftex-select-next-heading
    (kbd "gk") 'reftex-select-previous-heading
    (kbd "C-j") 'reftex-select-next-heading
    (kbd "C-k") 'reftex-select-previous-heading
    "go" 'reftex-select-callback        ;shows the point where the label is
    "gr" (lambda nil "Press `?' during selection to find out
    about this key" (interactive) (throw (quote myexit) 114)) ;reftex binds keys in a very arcane way using the number asigned by describe-char, in this case the value of "g" is 114
    "q" 'reftex-select-quit
    "ZZ" 'reftex-select-quit
    "ZQ" 'evil-quit
    "g?" 'reftex-select-help
    "c" (lambda nil "Press `?' during selection to find out
    about this key." (interactive) (throw (quote myexit) 108))
    "J" 'reftex-select-jump ;; weird binding, using default
    (kbd "<tab>") 'reftex-select-read-label
    "s" (lambda nil "Press `?' during selection to find out
    about this key." (interactive) (throw (quote myexit) 115))
    "x" (lambda nil "Press `?' during selection to find out
    about this key." (interactive) (throw (quote myexit) 97))
    "X" (lambda nil "Press `?' during selection to find out
    about this key." (interactive) (throw (quote myexit) 65))
    "S" (lambda nil "Press `?' during selection to find out
    about this key." (interactive) (throw (quote myexit) 120))
    "r" 'reftex-select-cycle-ref-style-forward
    "R" 'reftex-select-cycle-ref-style-backward
    "gO" 'reftex-select-show-insertion-point
    "o" (lambda nil "Press `?' during selection to find out
    about this key." (interactive) (throw (quote myexit) 101))
    "O" (lambda nil "Press `?' during selection to find out
    about this key." (interactive) (throw (quote myexit) 69))

    ;; mark
    "m" 'reftex-select-mark             ; TODO: Need a mark toggle function.
    "u" 'reftex-select-unmark)

  (evil-set-initial-state 'reftex-toc-mode 'normal)

  ;; This one is more involved, in reftex-toc.el, line 282 it shows the prompt
  ;; string with the keybinds and I don't see any way of changing it to show evil-like binds.
  (evil-collection-define-key 'normal 'reftex-toc-mode-map
    "j" 'reftex-toc-next
    "k" 'reftex-toc-previous
    (kbd "RET") 'reftex-toc-goto-line-and-hide
    (kbd "<tab>") 'reftex-toc-goto-line
    "g?" 'reftex-toc-show-help
    "q" 'reftex-toc-quit
    "ZZ" 'reftex-toc-quit
    "ZQ" 'evil-quit
    "gr" 'reftex-toc-rescan
    "r" 'reftex-toc-rescan
    "l" 'reftex-toc-toggle-labels
    "?" 'reftex-toc-show-help
    "x" 'reftex-toc-external
    ;; (kbd "SPC") 'reftex-toc-view-line
    "f" 'reftex-toc-toggle-follow))

(provide 'evil-collection-reftex)
;;; evil-collection-reftex.el ends here