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;;; evil-collection-corfu.el --- Bindings for `corfu-mode' -*- lexical-binding: t -*-
;; Copyright (C) 2022 James Nguyen
;; Author: James Nguyen <james@jojojames.com>
;; Maintainer: James Nguyen <james@jojojames.com>
;; URL: https://github.com/emacs-evil/evil-collection
;; Version: 0.0.1
;; Package-Requires: ((emacs "27.1"))
;; Keywords: evil, corfu, convenience, matching
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Bindings for `corfu-mode'.
;;; Code:
(require 'corfu nil t)
(require 'evil-collection)
(defgroup evil-collection-corfu nil
"Evil bindings for `corfu-mode'."
:group 'evil-collection)
(defvar corfu-map)
(defvar corfu-cycle)
(defvar corfu-preselect-first)
(defvar corfu--index)
(declare-function "corfu-insert" "corfu")
(declare-function "corfu-reset" "corfu")
(defconst evil-collection-corfu-maps '(corfu-map))
(defun evil-collection-corfu-quit-and-escape ()
"Call `corfu-quit' and then return to Normal State."
(interactive)
(call-interactively 'corfu-quit)
(evil-normal-state))
(defcustom evil-collection-corfu-key-themes '(default)
"Determines the key theme to be mapped.
This variable should be set before `evil-collection-corfu-setup' is called.
By default, only default is added to this list as the other key themes might
be too obtrusive.
This key theme variable may be refactored in the future so use with caution."
:type
'(repeat
:tag "Key Themes"
(choice
(const
:tag "Default Theme" default)
(const
:tag "Tab & Go" tab-n-go)
(const
:tag "Magic Return" magic-return)
(const
:tag "Magic Backspace" magic-backspace))))
;;;###autoload
(defun evil-collection-corfu-setup ()
"Set up `evil' bindings for `corfu'."
(when (memq 'default evil-collection-corfu-key-themes)
(evil-collection-define-key 'insert 'corfu-map
(kbd "C-n") 'corfu-next
(kbd "C-p") 'corfu-previous
(kbd "C-j") 'corfu-next
(kbd "C-k") 'corfu-previous
(kbd "M-j") 'corfu-next
(kbd "M-k") 'corfu-previous
(kbd "<escape>") 'evil-collection-corfu-quit-and-escape))
;; https://github.com/minad/corfu#tab-and-go-completion
(when (memq 'tab-n-go evil-collection-corfu-key-themes)
(setq corfu-cycle t
corfu-preselect-first nil)
(evil-collection-define-key 'insert 'corfu-map
"TAB" 'corfu-next
[tab] 'corfu-next
"S-TAB" 'corfu-previous
[backtab] 'corfu-previous))
(when (memq 'magic-return evil-collection-corfu-key-themes)
(defvar evil-collection-corfu-insert-or-next-line
`(menu-item "" nil :filter ,(lambda (&optional _)
(when (>= corfu--index 0)
'corfu-insert)))
"If we made a selection during `corfu' completion, select it.")
;; FIXME: Not sure why we need to use `define-key' here instead of
;; `evil-collection-define-key';.
(when (evil-collection-can-bind-key "RET")
(define-key corfu-map (kbd "RET")
evil-collection-corfu-insert-or-next-line)))
(when (memq 'magic-backspace evil-collection-corfu-key-themes)
(defvar evil-collection-corfu-cancel-or-backspace
`(menu-item "" nil :filter ,(lambda (&optional _)
(when (>= corfu--index 0)
'corfu-reset)))
"If we made a selection during `corfu' completion, cancel it.")
(evil-collection-define-key 'insert
'corfu-map (kbd "DEL") evil-collection-corfu-cancel-or-backspace)
(evil-collection-define-key 'insert
'corfu-map [backspace] evil-collection-corfu-cancel-or-backspace)
(evil-collection-define-key 'insert
'corfu-map (kbd "<backspace>") evil-collection-corfu-cancel-or-backspace))
(when evil-want-C-u-scroll
(evil-collection-define-key 'insert 'corfu-map
(kbd "C-u") 'corfu-scroll-up))
(when evil-want-C-d-scroll
(evil-collection-define-key 'insert 'corfu-map
(kbd "C-d") 'corfu-scroll-down))
(advice-add 'corfu--setup :after 'evil-normalize-keymaps)
(advice-add 'corfu--teardown :after 'evil-normalize-keymaps))
(provide 'evil-collection-corfu)
;;; evil-collection-corfu.el ends here
|
