FG42/core/fg42/system/keys.el

137 lines
4.9 KiB
EmacsLisp

;;; dependencies --- System library of FG42 -*- lexical-binding: t; -*-
;;
;; Copyright (c) 2010-2021 Sameer Rahmani & Contributors
;;
;; Author: Sameer Rahmani <lxsameer@gnu.org>
;; URL: https://gitlab.com/FG42/FG42
;; Version: 3.0.0
;;
;; 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:
;; `System' is just a state monad which holds the state of the editor.
;; Each system has to have a `start' function to start the setup process.
;;
;;; Code:
(require 'seq)
(require 'fg42/system/core)
(defun fg42/system-is-good? (system)
"Return non-nil if the keyset on the given SYSTEM is set to :good."
(eq (or (fg42/system-get system :i-am) :good) :good))
(defun fg42/system-is-evil? (system)
"Return non-nil if the keyset on the given SYSTEM is set to :good."
(eq (or (fg42/system-get system :i-am) :good) :evil))
(defun fg42/system-merge-keys (system cube-name keys)
"Retun an updated SYSTEM with the given keys KEYS for CUBE-NAME.
It converts the `:keys' of the cube to the following format and adds
them to the system. (cube-nam mode (key f)s...)."
(let ((keyset :good))
(if keys
;; TODO: Validate the deps here
(fg42/system-cons-to system
:keys
(car
(seq-reduce
(lambda (bindings keys)
(let ((mode (car keys))
(pair-list (plist-get (cdr keys) keyset)))
(cons
(list cube-name mode pair-list)
bindings)))
keys
'())))
system)))
(defun fg42/system-setup-keys (system)
"Setup the key binding through out the SYSTEM."
(let ((keyset :good))
(mapcar
(lambda (key-desc)
(let ((cube-name (car key-desc))
(map (cadr key-desc))
(binding (caddr key-desc))
(f (cadddr key-desc)))
(message "Set keybinding %s" key-desc)
(if (eq keyset :good)
(define-in-keymap map binding f)
(define-evil-in-keymap map binding f))))
(fg42/system-get system :keys)))
system)
(defmacro define-in-keymap (map binding f)
"Set the given key BINDING in the given MAP to F."
(if (eq map :global)
`(global-set-key (kbd ,binding) ,f)
`(define-key ,map (kbd ,binding) ,f)))
(defmacro define-evil-in-keymap (map binding f)
"Set the given key BINDING in the given MAP to F (evil mode only)."
(message "TBD")
nil)
(defun fg42/defkey--good (map key fn)
"Set the given KEY on key map MAP to FN."
(message "SSSSSSSSSSSS %s %s" (type-of map) map)
(funcall #'define-key map (kbd key) fn))
(defun fg42/defkey--evil (map state-keys fn)
"Set the given STATE-KEYS on key map MAP to FN."
(let ((normal-key (plist-get state-keys :normal))
(visual-key (plist-get state-keys :visual))
(insert-key (plist-get state-keys :insert))
(emacs-key (plist-get state-keys :emacs)))
(cond
((not (null normal-key)) (evil-define-key 'normal map (kbd normal-key) fn))
((not (null visual-key)) (evil-define-key 'visual map (kbd visual-key) fn))
((not (null insert-key)) (evil-define-key 'insert map (kbd insert-key) fn))
((not (null emacs-key)) (evil-define-key 'emacs map (kbd emacs-key) fn)))))
(defmacro defkey (map fn &rest keys)
"Defines a key binding for FG42 for different types.
Defines a keybinding in the given MAP for the given KEYS that maps
to the given FN with the given DOCSTRING.
Example usage :
\\(defkey `'global-map`' 'goto-line
:evil \\(:normal \"SPC s u\"\\)
:good \"<f2>\"\\)"
(declare (indent defun))
(let ((good-key (plist-get keys :good))
(evil-state-key (plist-get keys :evil)))
(when (and (fg42/system-is-evil? fg42/system) (null evil-state-key))
(error "You should pass :evil keys when you are evil user"))
(when (and (fg42/system-is-good? fg42/system) (null good-key))
(error "You should pass :good keys when you are a good user"))
(cond
((fg42/system-is-good? fg42/system)
`(fg42/defkey--good ,map ,good-key ,fn))
((fg42/system-is-evil? fg42/system)
`(fg42/defkey-evil ,map (quote ,evil-state-key) ,fn)))))
(provide 'fg42/system/keys)
;;; keys.el ends here