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;;; evil-collection-outline.el --- Evil bindings for outline-mode -*- lexical-binding: t -*-
;; Copyright (C) 2017 Pierre Neidhardt
;; Author: Pierre Neidhardt <ambrevar@gmail.com>
;; Maintainer: James Nguyen <james@jojojames.com>
;; Pierre Neidhardt <ambrevar@gmail.com>
;; URL: https://github.com/emacs-evil/evil-collection
;; Version: 0.0.1
;; Package-Requires: ((emacs "25.1"))
;; Keywords: evil, outline, 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 outline-mode.
;;; Code:
(require 'evil-collection)
(require 'outline)
(defcustom evil-collection-outline-bind-tab-p t
"Enable <tab>-based bindings in Outline mode.
Unless you have Evil bindings set up for Org mode, Org will
inherit the <tab>-based bindings from Outline. Set this option
to nil if you want to preserve the Emacs-state <tab> keys in Org
mode."
:group 'evil-collection-outline
:type 'boolean)
(defconst evil-collection-outline-maps '(outline-mode-map))
(defun evil-collection-outline-setup ()
"Set up `evil' bindings for `outline'."
(evil-set-initial-state 'outline-mode 'normal)
(when evil-collection-outline-bind-tab-p
(evil-collection-define-key 'normal 'outline-mode-map
(kbd "<backtab>") 'outline-show-all ; Also "z r" by default
(kbd "<tab>") 'outline-toggle-children)) ; Also "z a" by default
(evil-collection-define-key 'normal 'outline-mode-map
;; folding
;; Evil default keys:
;; zO: Show recursively for current branch only.
;; za: Toggle first level like outline-toggle-children.
;; zc: Hide complete subtree.
;; zm: Show only root notes.
;; zo: Show current node like "za".
;; zr: Show everything.
;; "ze" 'outline-hide-entry
;; "zE" 'outline-show-entry
;; "zl" 'outline-hide-leaves
;; "zb" 'outline-show-branches
;; "zo" 'outline-hide-other
"zB" 'outline-hide-body ; Hide all bodies, Emacs has "C-c C-t".
"zb" 'outline-hide-entry ; Hide current body, Emacs has "C-c C-c".
"ze" 'outline-show-entry ; Show current body only, not subtree, reverse of outline-hide-entry, Emacs has "C-c C-e".
"zl" 'outline-hide-leaves ; Like `outline-hide-body' but for current subtree only, Emacs has "C-c C-l".
"zK" 'outline-show-branches ; Show all children recursively but no body. Emacs has "C-c C-k".
"zk" 'outline-show-children ; Direct children only unlike `outline-show-branches', and no content unlike `outline-show-entry' and `outline-toggle-children'. Emacs has "C-c TAB".
"zp" 'outline-hide-other ; Hide all nodes and bodies except current body. Emacs has "C-c C-o".
;; outline-hide-sublevels ; q ; Is it any different from `outline-hide-body'?
;; outline-hide-subtree ; Emacs has "C-c C-d", Evil has default "zc".
;; outline-show-subtree ; Emacs has "C-c C-s", Evil has default "zO".
;; TODO: To mark subtree ("C-c @"), we would need to define a tree object.
;; motion
"[" 'outline-previous-visible-heading
"]" 'outline-next-visible-heading
(kbd "C-k") 'outline-backward-same-level
(kbd "C-j") 'outline-forward-same-level
"gk" 'outline-backward-same-level
"gj" 'outline-forward-same-level
"^" 'outline-up-heading
(kbd "M-h") 'outline-promote ; Org-mode has "M-<left>", Evil-org has "M-h"
(kbd "M-j") 'outline-move-subtree-down ; Org-mode has "M-<down>", Evil-org has "M-j"
(kbd "M-k") 'outline-move-subtree-up ; Org-mode has "M-<up>", Evil-org has "M-k"
(kbd "M-l") 'outline-demote ; Org-mode has "M-<right>", Evil-org has "M-l"
(kbd "M-<return>") 'outline-insert-heading)) ; Org-mode has "M-<return>"
(provide 'evil-collection-outline)
;;; evil-collection-outline.el ends here
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