Add evil-helm

evil-collection.el

@@ -53,6 +53,7 @@
     flycheck
     ggtags
     help
+    helm
     ibuffer
     image
     info

evil-helm.el

@@ -0,0 +1,72 @@
+;;; evil-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: emacs, compile, evil
+;; HomePage: https://github.com/jojojames/evil-collection
+
+;; 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:
+
+;;; Code:
+
+(require 'evil)
+(require 'helm-files) ; 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.
+
+;; TODO: This does not seem to do anything.  Calling the `evil-define-key's manually works though.
+(defun evil-helm-set-keys ()
+
+  (evil-define-key '(insert normal) helm-map
+    (kbd "C-f") 'helm-next-page
+    (kbd "C-b") 'helm-previous-page
+    (kbd "M-h") 'helm-next-source
+    (kbd "M-j") 'helm-next-line
+    (kbd "M-k") 'helm-previous-line
+    (kbd "M-l") 'helm-execute-persistent-action)
+
+  ;; (kbd "<escape>") 'helm-keyboard-quit)
+
+  (evil-define-key 'normal helm-map
+    (kbd "<tab>") 'helm-select-action
+    "j" 'helm-next-line
+    "k" 'helm-previous-line
+    "g" 'helm-beginning-of-buffer
+    "G" 'helm-end-of-buffer
+    (kbd "SPC") 'helm-toggle-visible-mark
+    ;; (kbd "S-SPC") 'evil-helm-toggle-visible-mark-backwards ; TODO: Not needed?
+    (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 'insert map
+      (kbd "M-h") 'helm-find-files-up-one-level
+      (kbd "M-l") 'helm-execute-persistent-action
+      (kbd "C-l") nil))) ; So the header displays the new `helm-execute-persistent-action' binding.
+
+(provide 'evil-helm)
+;;; evil-helm.el ends here