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;;; ivy-hydra.el --- Additional key bindings for Ivy -*- lexical-binding: t -*-
;; Copyright (C) 2015-2019 Free Software Foundation, Inc.
;; Author: Oleh Krehel <ohwoeowho@gmail.com>
;; URL: https://github.com/abo-abo/swiper
;; Version: 0.13.0
;; Package-Requires: ((emacs "24.5") (ivy "0.13.0") (hydra "0.15.0"))
;; Keywords: convenience
;; This file is part of GNU Emacs.
;; 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 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.
;; For a full copy of the GNU General Public License
;; see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This package provides the `hydra-ivy/body' command, which is a
;; quasi-prefix map, with many useful bindings. These bindings are
;; shorter than usual, using mostly unprefixed keys.
;;; Code:
(require 'ivy)
(require 'hydra)
(defun ivy--matcher-desc ()
"Return description of `ivy--regex-function'."
(let ((cell (assq ivy--regex-function ivy-preferred-re-builders)))
(if cell
(cdr cell)
"other")))
(defhydra hydra-ivy (:hint nil
:color pink)
"
^ ^ ^ ^ ^ ^ | ^Call^ ^ ^ | ^Cancel^ | ^Options^ | Action _w_/_s_/_a_: %-14s(ivy-action-name)
^-^-^-^-^-^-+-^-^---------^-^--+-^-^------+-^-^-------+-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^---------------------------
^ ^ _k_ ^ ^ | _f_ollow occ_U_r | _i_nsert | _c_: calling %-5s(if ivy-calling \"on\" \"off\") _C_ase-fold: %-10`ivy-case-fold-search
_h_ ^+^ _l_ | _d_one ^ ^ | _o_ops | _M_: matcher %-5s(ivy--matcher-desc)^^^^^^^^^^^^ _T_runcate: %-11`truncate-lines
^ ^ _j_ ^ ^ | _g_o ^ ^ | ^ ^ | _<_/_>_: shrink/grow^^^^^^^^^^^^^^^^^^^^^^^^^^^^ _D_efinition of this menu
"
;; arrows
("h" ivy-beginning-of-buffer)
("j" ivy-next-line)
("k" ivy-previous-line)
("l" ivy-end-of-buffer)
;; mark
("m" ivy-mark)
("u" ivy-unmark)
("DEL" ivy-unmark-backward)
("t" ivy-toggle-marks)
;; actions
("o" keyboard-escape-quit :exit t)
("r" ivy-dispatching-done-hydra :exit t)
("C-g" keyboard-escape-quit :exit t)
("i" nil)
("C-o" nil)
("f" ivy-alt-done :exit nil)
("C-j" ivy-alt-done :exit nil)
("d" ivy-done :exit t)
("g" ivy-call)
("C-m" ivy-done :exit t)
("c" ivy-toggle-calling)
("M" ivy-rotate-preferred-builders)
(">" ivy-minibuffer-grow)
("<" ivy-minibuffer-shrink)
("w" ivy-prev-action)
("s" ivy-next-action)
("a" (let ((ivy-read-action-function #'ivy-read-action-by-key))
(ivy-read-action)))
("T" (setq truncate-lines (not truncate-lines)))
("C" ivy-toggle-case-fold)
("U" ivy-occur :exit t)
("D" (ivy-exit-with-action
(lambda (_) (find-function 'hydra-ivy/body)))
:exit t))
(defvar ivy-dispatching-done-columns 2
"Number of columns to use if the hint does not fit on one line.")
(defvar ivy-dispatching-done-idle nil
"When non-nil, the hint will be delayed by this many seconds.")
(defvar ivy-dispatching-done-hydra-exit-keys '(("M-o" nil "back")
("C-g" nil))
"Keys that can be used to exit `ivy-dispatching-done-hydra'.")
(defun ivy-dispatching-done-hydra ()
"Select one of the available actions and call `ivy-done'."
(interactive)
(let* ((actions (ivy-state-action ivy-last))
(extra-actions ivy-dispatching-done-hydra-exit-keys)
(doc (concat "action: "
(mapconcat
(lambda (x) (format "[%s] %s" (nth 0 x) (nth 2 x)))
(append (cdr actions)
extra-actions) ", ")))
(estimated-len (length doc))
(n-columns (if (> estimated-len (window-width))
ivy-dispatching-done-columns
nil))
(i 0))
(if (null (ivy--actionp actions))
(ivy-done)
(funcall
(eval
`(defhydra ivy-read-action (:color teal :columns ,n-columns :idle ,ivy-dispatching-done-idle)
"action"
,@(mapcar (lambda (x)
(list (nth 0 x)
`(progn
(setcar (ivy-state-action ivy-last) ,(cl-incf i))
(ivy-done))
(nth 2 x)))
(cdr actions))
,@extra-actions))))))
(setq ivy-read-action-function (lambda (_) (ivy-dispatching-done-hydra)))
(provide 'ivy-hydra)
;;; ivy-hydra.el ends here
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