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;;; evil-collection-helm.el --- Evil bindings for Helm -*- 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/jojojames/evil-collection
;; Version: 0.0.1
;; Package-Requires: ((emacs "25.1"))
;; Keywords: evil, helm, 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 Helm.
;;; Code:
(require 'evil)
(require 'helm-files nil t) ; TODO: Check if this is the ideal requirement and if we are not loading too much.
;; To navigate Helm entries with <hjkl> in insert state, we need a modifier.
;; Using the C- modifier would conflict with the help prefix "C-h". So we use
;; M- prefixed bindings instead.
;; Helm-find-files: We cannot use "h" and "l" in normal state to navigate up and
;; down the file system hierarchy since we need them to use it to edit the
;; minibuffer content.
(defvar helm-map)
(defvar helm-find-files-map)
(defvar helm-read-file-map)
(defun evil-collection-helm-setup ()
"Set up `evil' bindings for `helm'."
(evil-define-key '(insert normal) helm-map
(kbd "M-[") 'helm-previous-source
(kbd "M-]") 'helm-next-source
(kbd "M-l") 'helm-execute-persistent-action
(kbd "M-j") 'helm-next-line
(kbd "M-k") 'helm-previous-line
(kbd "C-f") 'helm-next-page
(kbd "C-b") 'helm-previous-page)
(dolist (map (list helm-find-files-map helm-read-file-map))
(evil-define-key* 'normal map
"go" 'helm-ff-run-switch-other-window
"/" 'helm-ff-run-find-sh-command)
(evil-define-key* '(insert normal) map
(kbd "S-<return>") 'helm-ff-run-switch-other-window
(kbd "M-h") 'helm-find-files-up-one-level))
;; TODO: Change the Helm header to display "M-l" instead of "C-l". We don't
;; want to modify the Emacs Helm map.
(evil-define-key '(insert normal) helm-generic-files-map (kbd "S-<return>") 'helm-ff-run-switch-other-window)
(evil-define-key '(insert normal) helm-buffer-map (kbd "S-<return>") 'helm-buffer-switch-other-window)
(evil-define-key '(insert normal) helm-buffer-map (kbd "M-<return>") 'display-buffer)
(evil-define-key '(insert normal) helm-moccur-map (kbd "S-<return>") 'helm-moccur-run-goto-line-ow)
(evil-define-key '(insert normal) helm-grep-map (kbd "S-<return>") 'helm-grep-run-other-window-action)
(evil-define-key 'normal helm-generic-files-map "go" 'helm-ff-run-switch-other-window)
(evil-define-key 'normal helm-buffer-map "go" 'helm-buffer-switch-other-window)
(evil-define-key 'normal helm-buffer-map "gO" 'display-buffer)
(evil-define-key 'normal helm-moccur-map "go" 'helm-moccur-run-goto-line-ow)
(evil-define-key 'normal helm-grep-map "go" 'helm-grep-run-other-window-action)
(evil-define-key 'normal helm-buffer-map
"=" 'helm-buffer-run-ediff
"%" 'helm-buffer-run-query-replace-regexp
"D" 'helm-buffer-run-kill-persistent) ; Ivy has "D".
(evil-define-key 'normal helm-find-files-map
"=" 'helm-ff-run-ediff-file
"%" 'helm-ff-run-query-replace-regexp
"D" 'helm-ff-run-delete-file) ; Ivy has "D".
(evil-define-key 'normal helm-map
(kbd "<tab>") 'helm-select-action ; TODO: Ivy has "ga".
(kbd "[") 'helm-previous-source
(kbd "]") 'helm-next-source
"gk" 'helm-previous-source
"gj" 'helm-next-source
(kbd "(") 'helm-prev-visible-mark
(kbd ")") 'helm-next-visible-mark
"j" 'helm-next-line
"k" 'helm-previous-line
"gg" 'helm-beginning-of-buffer
"G" 'helm-end-of-buffer
"/" 'helm-quit-and-find-file
;; refresh
"gr" 'helm-refresh
"p" 'helm-yank-selection
"P" 'helm-copy-to-buffer
"y" 'helm-kill-selection-and-quit
(kbd "SPC") 'helm-toggle-visible-mark))
(provide 'evil-collection-helm)
;;; evil-collection-helm.el ends here
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