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ivy.el
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;;; ivy.el --- Incremental Vertical completYon -*- lexical-binding: t -*-
;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
;; Author: Oleh Krehel <[email protected]>
;; URL: https://github.com/abo-abo/swiper
;; Version: 0.13.4
;; Package-Requires: ((emacs "24.5"))
;; Keywords: matching
;; 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 `ivy-read' as an alternative to
;; `completing-read' and similar functions.
;;
;; There's no intricate code to determine the best candidate.
;; Instead, the user can navigate to it with `ivy-next-line' and
;; `ivy-previous-line'.
;;
;; The matching is done by splitting the input text by spaces and
;; re-building it into a regex.
;; So "for example" is transformed into "\\(for\\).*\\(example\\)".
;;; Code:
(require 'colir)
(require 'ivy-overlay)
(require 'ivy-faces)
(require 'cl-lib)
(require 'ring)
(eval-when-compile
(require 'subr-x))
;;* Customization
(defgroup ivy nil
"Incremental vertical completion."
:group 'convenience)
(defcustom ivy-height 10
"Number of lines for the minibuffer window.
See also `ivy-height-alist'."
:type 'integer)
(defcustom ivy-count-format "%-4d "
"The style to use for displaying the current candidate count for `ivy-read'.
Set this to \"\" to suppress the count visibility.
Set this to \"(%d/%d) \" to display both the index and the count."
:type '(choice
(const :tag "Count disabled" "")
(const :tag "Count matches" "%-4d ")
(const :tag "Count matches and show current match" "(%d/%d) ")
string))
(defcustom ivy-pre-prompt-function nil
"When non-nil, add strings before the `ivy-read' prompt."
:type '(choice
(const :tag "Do nothing" nil)
(function :tag "Custom function")))
(defcustom ivy-add-newline-after-prompt nil
"When non-nil, add a newline after the `ivy-read' prompt."
:type 'boolean)
(defcustom ivy-wrap nil
"When non-nil, wrap around after the first and the last candidate."
:type 'boolean)
(defcustom ivy-display-style 'fancy
"The style for formatting the minibuffer.
By default, the matched strings are copied as is.
The fancy display style highlights matching parts of the regexp,
a behavior similar to `swiper'."
:type '(choice
(const :tag "Plain" nil)
(const :tag "Fancy" fancy)))
(defcustom ivy-on-del-error-function #'abort-recursive-edit
"Function to call when deletion fails during completion.
The usual reason for `ivy-backward-delete-char' to fail is when
there is no text left to delete, i.e., when it is called at the
beginning of the minibuffer.
The default setting provides a quick exit from completion.
Another common option is `ignore', which does nothing."
:type '(choice
(const :tag "Exit completion" abort-recursive-edit)
(const :tag "Do nothing" ignore)
(function :tag "Custom function")))
(defcustom ivy-extra-directories '("../" "./")
"Add this to the front of the list when completing file names.
Only \"./\" and \"../\" apply here. They appear in reverse order."
:type '(repeat :tag "Dirs"
(choice
(const :tag "Parent Directory" "../")
(const :tag "Current Directory" "./"))))
(defcustom ivy-use-virtual-buffers nil
"When non-nil, add recent files and/or bookmarks to `ivy-switch-buffer'.
The value `recentf' includes only recent files to the virtual
buffers list, whereas the value `bookmarks' does the same for
bookmarks. Any other non-nil value includes both."
:type '(choice
(const :tag "Don't use virtual buffers" nil)
(const :tag "Recent files" recentf)
(const :tag "Bookmarks" bookmarks)
(const :tag "All virtual buffers" t)))
(defvar ivy--display-function nil
"The display-function is used in current.")
(defvar ivy-display-functions-props
'((ivy-display-function-overlay :cleanup ivy-overlay-cleanup))
"Map Ivy display functions to their property lists.
Examples of properties include associated `:cleanup' functions.")
(defcustom ivy-display-functions-alist
'((ivy-completion-in-region . ivy-display-function-overlay)
(t . nil))
"An alist for customizing where to display the candidates.
Each key is a caller symbol. When the value is nil (the default),
the candidates are shown in the minibuffer. Otherwise, the value
is a function which takes a string argument comprising the
current matching candidates and displays it somewhere.
See also `https://github.com/abo-abo/swiper/wiki/ivy-display-function'."
:type '(alist
:key-type symbol
:value-type (choice
(const :tag "Minibuffer" nil)
(const :tag "LV" ivy-display-function-lv)
(const :tag "Popup" ivy-display-function-popup)
(const :tag "Overlay" ivy-display-function-overlay)
(function :tag "Custom function"))))
(defvar ivy-completing-read-dynamic-collection nil
"Run `ivy-completing-read' with `:dynamic-collection t`.")
(defcustom ivy-completing-read-handlers-alist
'((tmm-menubar . completing-read-default)
(tmm-shortcut . completing-read-default)
(bbdb-create . ivy-completing-read-with-empty-string-def)
(auto-insert . ivy-completing-read-with-empty-string-def)
(Info-on-current-buffer . ivy-completing-read-with-empty-string-def)
(Info-follow-reference . ivy-completing-read-with-empty-string-def)
(Info-menu . ivy-completing-read-with-empty-string-def)
(Info-index . ivy-completing-read-with-empty-string-def)
(Info-virtual-index . ivy-completing-read-with-empty-string-def)
(info-display-manual . ivy-completing-read-with-empty-string-def))
"An alist of handlers to replace `completing-read' in `ivy-mode'."
:type '(alist :key-type symbol :value-type function))
(defcustom ivy-height-alist nil
"An alist to customize `ivy-height'.
It is a list of (CALLER . HEIGHT). CALLER is a caller of
`ivy-read' and HEIGHT is the number of lines displayed.
HEIGHT can also be a function that returns the number of lines."
:type '(alist
:key-type function
:value-type (choice integer function)))
(defvar ivy-completing-read-ignore-handlers-depth -1
"Used to avoid infinite recursion.
If `(minibuffer-depth)' equals this, `ivy-completing-read' will
act as if `ivy-completing-read-handlers-alist' is empty.")
(defvar ivy-highlight-grep-commands nil
"List of grep-like commands.")
(defvar ivy--actions-list nil
"A list of extra actions per command.")
(defun ivy-set-actions (cmd actions)
"Set CMD extra exit points to ACTIONS."
(setq ivy--actions-list
(plist-put ivy--actions-list cmd actions)))
(defun ivy-add-actions (cmd actions)
"Add extra exit points ACTIONS to CMD.
Existing exit points of CMD are overwritten by those in
ACTIONS that have the same key."
(setq ivy--actions-list
(plist-put ivy--actions-list cmd
(cl-delete-duplicates
(append (plist-get ivy--actions-list cmd) actions)
:key #'car :test #'equal))))
(defun ivy--compute-extra-actions (action caller)
"Add extra actions to ACTION based on CALLER."
(let* ((extra-actions (cl-delete-duplicates
(append (plist-get ivy--actions-list t)
(plist-get ivy--actions-list this-command)
(plist-get ivy--actions-list caller))
:key #'car :test #'equal))
(override-default (assoc "o" extra-actions)))
(cond (override-default
(cons 1 (cons override-default
(cl-delete "o" extra-actions
:key #'car :test #'equal))))
((not extra-actions)
action)
((functionp action)
`(1
("o" ,action "default")
,@extra-actions))
((null action)
`(1
("o" identity "default")
,@extra-actions))
(t
(cons (car action)
(cl-delete-duplicates (cdr (append action extra-actions))
:key #'car :test #'equal :from-end t))))))
(defvar ivy--prompts-list nil)
(defun ivy-set-prompt (caller prompt-fn)
"Associate CALLER with PROMPT-FN.
PROMPT-FN is a function of no arguments that returns a prompt string."
(setq ivy--prompts-list
(plist-put ivy--prompts-list caller prompt-fn)))
(defvar ivy--display-transformers-alist nil
"A list of str->str transformers per command.")
(defun ivy-set-display-transformer (cmd transformer)
"Set CMD a displayed candidate TRANSFORMER.
It's a lambda that takes a string one of the candidates in the
collection and returns a string for display, the same candidate
plus some extra information.
This lambda is called only on the `ivy-height' candidates that
are about to be displayed, not on the whole collection."
(declare (obsolete "Use `ivy-configure' :display-transformer-fn" "<2020-05-20 Wed>"))
(ivy--alist-set 'ivy--display-transformers-alist cmd transformer))
(defvar ivy--sources-list nil
"A list of extra sources per command.")
(defun ivy-set-sources (cmd sources)
"Attach to CMD a list of extra SOURCES.
Each static source is a function that takes no argument and
returns a list of strings.
The (original-source) determines the position of the original
dynamic source.
Extra dynamic sources aren't supported yet.
Example:
(defun small-recentf ()
(cl-subseq recentf-list 0 20))
(ivy-set-sources
'counsel-locate
'((small-recentf)
(original-source)))"
(setq ivy--sources-list
(plist-put ivy--sources-list cmd sources)))
(defun ivy--compute-extra-candidates (caller)
(let ((extra-sources (or (plist-get ivy--sources-list caller)
'((original-source))))
(result nil))
(dolist (source extra-sources)
(cond ((equal source '(original-source))
(push source result))
((null (cdr source))
(push (list (car source) (funcall (car source))) result))))
result))
(defvar ivy-current-prefix-arg nil
"Prefix arg to pass to actions.
This is a global variable that is set by ivy functions for use in
action functions.")
;;* Keymap
(require 'delsel)
(defun ivy-define-key (keymap key def)
"Forward to (`define-key' KEYMAP KEY DEF).
Remove DEF from `counsel-M-x' list."
(put def 'no-counsel-M-x t)
(define-key keymap key def))
(defvar ivy-minibuffer-map
(let ((map (make-sparse-keymap)))
(ivy-define-key map (kbd "C-m") 'ivy-done)
(define-key map [down-mouse-1] 'ignore)
(ivy-define-key map [mouse-1] 'ivy-mouse-done)
(ivy-define-key map [mouse-3] 'ivy-mouse-dispatching-done)
(ivy-define-key map (kbd "C-M-m") 'ivy-call)
(ivy-define-key map (kbd "C-j") 'ivy-alt-done)
(ivy-define-key map (kbd "C-M-j") 'ivy-immediate-done)
(ivy-define-key map (kbd "TAB") 'ivy-partial-or-done)
(ivy-define-key map [remap next-line] 'ivy-next-line)
(ivy-define-key map [remap previous-line] 'ivy-previous-line)
(ivy-define-key map (kbd "C-r") 'ivy-reverse-i-search)
(define-key map (kbd "SPC") 'self-insert-command)
(ivy-define-key map [remap delete-backward-char] 'ivy-backward-delete-char)
(ivy-define-key map [remap backward-delete-char-untabify] 'ivy-backward-delete-char)
(ivy-define-key map [remap backward-kill-word] 'ivy-backward-kill-word)
(ivy-define-key map [remap delete-char] 'ivy-delete-char)
(ivy-define-key map [remap forward-char] 'ivy-forward-char)
(ivy-define-key map (kbd "<right>") 'ivy-forward-char)
(ivy-define-key map [remap kill-word] 'ivy-kill-word)
(ivy-define-key map [remap beginning-of-buffer] 'ivy-beginning-of-buffer)
(ivy-define-key map [remap end-of-buffer] 'ivy-end-of-buffer)
(ivy-define-key map (kbd "M-n") 'ivy-next-history-element)
(ivy-define-key map (kbd "M-p") 'ivy-previous-history-element)
(define-key map (kbd "C-g") 'minibuffer-keyboard-quit)
(ivy-define-key map [remap scroll-up-command] 'ivy-scroll-up-command)
(ivy-define-key map [remap scroll-down-command] 'ivy-scroll-down-command)
(ivy-define-key map (kbd "<next>") 'ivy-scroll-up-command)
(ivy-define-key map (kbd "<prior>") 'ivy-scroll-down-command)
(ivy-define-key map (kbd "C-v") 'ivy-scroll-up-command)
(ivy-define-key map (kbd "M-v") 'ivy-scroll-down-command)
(ivy-define-key map (kbd "C-M-n") 'ivy-next-line-and-call)
(ivy-define-key map (kbd "C-M-p") 'ivy-previous-line-and-call)
(ivy-define-key map (kbd "M-a") 'ivy-toggle-marks)
(ivy-define-key map (kbd "M-r") 'ivy-toggle-regexp-quote)
(ivy-define-key map (kbd "M-j") 'ivy-yank-word)
(ivy-define-key map (kbd "M-i") 'ivy-insert-current)
(ivy-define-key map (kbd "C-M-y") 'ivy-insert-current-full)
(ivy-define-key map (kbd "C-o") 'hydra-ivy/body)
(ivy-define-key map (kbd "M-o") 'ivy-dispatching-done)
(ivy-define-key map (kbd "C-M-o") 'ivy-dispatching-call)
(ivy-define-key map [remap kill-line] 'ivy-kill-line)
(ivy-define-key map [remap kill-whole-line] 'ivy-kill-whole-line)
(ivy-define-key map (kbd "S-SPC") 'ivy-restrict-to-matches)
(ivy-define-key map [remap kill-ring-save] 'ivy-kill-ring-save)
(ivy-define-key map (kbd "C-M-a") 'ivy-read-action)
(ivy-define-key map (kbd "C-c C-o") 'ivy-occur)
(ivy-define-key map (kbd "C-c C-a") 'ivy-toggle-ignore)
(ivy-define-key map (kbd "C-c C-s") 'ivy-rotate-sort)
(ivy-define-key map [remap describe-mode] 'ivy-help)
(ivy-define-key map "$" 'ivy-magic-read-file-env)
map)
"Keymap used in the minibuffer.")
(autoload 'hydra-ivy/body "ivy-hydra" "" t)
(autoload 'ivy-hydra-read-action "ivy-hydra" "" t)
(defvar ivy-mode-map
(let ((map (make-sparse-keymap)))
(ivy-define-key map [remap switch-to-buffer] 'ivy-switch-buffer)
(ivy-define-key map [remap switch-to-buffer-other-window] 'ivy-switch-buffer-other-window)
map)
"Keymap for `ivy-mode'.")
;;* Globals
(cl-defstruct ivy-state
prompt collection
predicate require-match initial-input
history preselect keymap update-fn sort
;; The frame in which `ivy-read' was called
frame
;; The window in which `ivy-read' was called
window
;; The buffer in which `ivy-read' was called
buffer
;; The value of `ivy-text' to be used by `ivy-occur'
text
action
unwind
re-builder
matcher
;; When this is non-nil, call it for each input change to get new candidates
dynamic-collection
;; A lambda that transforms candidates only for display
display-transformer-fn
directory
caller
current
def
ignore
multi-action
extra-props)
(defvar ivy-last (make-ivy-state)
"The last parameters passed to `ivy-read'.
This should eventually become a stack so that you could use
`ivy-read' recursively.")
(defvar ivy--sessions nil
"Alist mapping session symbols to `ivy-state' objects.")
(defvar ivy-recursive-last nil)
(defvar ivy-recursive-restore t
"When non-nil, restore the above state when exiting the minibuffer.
This variable is let-bound to nil by functions that take care of
the restoring themselves.")
(defsubst ivy-set-action (action)
"Set the current `ivy-last' field to ACTION."
(setf (ivy-state-action ivy-last) action))
(defvar inhibit-message)
(defvar ffap-machine-p-known)
(defun ivy-thing-at-point ()
"Return a string that corresponds to the current thing at point."
(substring-no-properties
(cond
((use-region-p)
(let* ((beg (region-beginning))
(end (region-end))
(eol (save-excursion (goto-char beg) (line-end-position))))
(buffer-substring-no-properties beg (min end eol))))
((thing-at-point 'url))
((and (eq (ivy-state-collection ivy-last) #'read-file-name-internal)
(let ((inhibit-message t)
(ffap-machine-p-known 'reject))
(run-hook-with-args-until-success 'file-name-at-point-functions))))
((let ((s (thing-at-point 'symbol)))
(and (stringp s)
(if (string-match "\\`[`']?\\(.*?\\)'?\\'" s)
(match-string 1 s)
s))))
((looking-at "(+\\(\\(?:\\sw\\|\\s_\\)+\\)\\_>")
(match-string-no-properties 1))
(t
""))))
(defvar ivy-history nil
"History list of candidates entered in the minibuffer.
Maximum length of the history list is determined by the value
of `history-length'.")
(defvar ivy--directory nil
"Current directory when completing file names.")
(defvar ivy--directory-hist nil
"Store the history of directories.
This allows RET to reverse consecutive DEL.")
(defvar ivy--length 0
"Store the amount of viable candidates.")
(defvar ivy-text ""
"Store the user's string as it is typed in.")
(defvar ivy-regex ""
"Store the regex value that corresponds to `ivy-text'.")
(defvar ivy--regex-function 'ivy--regex
"Current function for building a regex.")
(defun ivy-set-text (str)
"Set `ivy-text' to STR."
(setq ivy-text str)
(setq ivy-regex (funcall ivy--regex-function ivy-text)))
(defvar ivy--index 0
"Store the index of the current candidate.")
(defvar ivy--window-index 0
"Store the index of the current candidate in the minibuffer window.
This means it's between 0 and `ivy-height'.")
(defvar ivy-exit nil
"Store `done' if the completion was successfully selected.
Otherwise, store nil.")
(defvar ivy--all-candidates nil
"Store the candidates passed to `ivy-read'.")
(defvar ivy--extra-candidates '((original-source))
"Store candidates added by the extra sources.
This is an internal-use alist. Each key is a function name, or
original-source (which represents where the current dynamic
candidates should go).
Each value is an evaluation of the function, in case of static
sources. These values will subsequently be filtered on `ivy-text'.
This variable is set by `ivy-read' and used by `ivy--set-candidates'.")
(defcustom ivy-use-ignore-default t
"The default policy for user-configured candidate filtering."
:type '(choice
(const :tag "Ignore ignored always" always)
(const :tag "Ignore ignored when others exist" t)
(const :tag "Don't ignore" nil)))
(defvar ivy-use-ignore t
"Store policy for user-configured candidate filtering.
This may be changed dynamically by `ivy-toggle-ignore'.
Use `ivy-use-ignore-default' for a permanent configuration.")
(defvar ivy--default nil
"Default initial input.")
(defvar ivy--prompt nil
"Store the format-style prompt.
When non-nil, it should contain at least one %d.")
(defvar ivy--prompt-extra ""
"Temporary modifications to the prompt.")
(defvar ivy--old-re nil
"Store the old regexp.
Either a string or a list for `ivy-re-match'.")
(defvar ivy--old-cands nil
"Store the candidates matched by `ivy--old-re'.")
(defvar ivy--highlight-function 'ivy--highlight-default
"Current function for formatting the candidates.")
(defvar ivy--subexps 0
"Number of groups in the current `ivy--regex'.")
(defvar ivy--full-length nil
"The total amount of candidates when :dynamic-collection is non-nil.")
(defvar ivy--old-text ""
"Store old `ivy-text' for dynamic completion.")
(defvar ivy--trying-to-resume-dynamic-collection nil
"Non-nil if resuming from a dynamic collection.
When non-nil, ivy will wait until the first chunk of asynchronous
candidates has been received before selecting the last
preselected candidate.")
(defun ivy--set-index-dynamic-collection ()
(when ivy--trying-to-resume-dynamic-collection
(let ((preselect-index
(ivy--preselect-index (ivy-state-preselect ivy-last) ivy--all-candidates)))
(when preselect-index
(ivy-set-index preselect-index)))
(setq ivy--trying-to-resume-dynamic-collection nil)))
(defcustom ivy-case-fold-search-default
(if search-upper-case
'auto
case-fold-search)
"The default value for `case-fold-search' in Ivy operations.
The special value `auto' means case folding is performed so long
as the entire input string comprises lower-case characters. This
corresponds to the default behaviour of most Emacs search
functionality, e.g. as seen in `isearch'."
:link '(info-link "(emacs)Lax Search")
:type '(choice
(const :tag "Auto" auto)
(const :tag "Always" t)
(const :tag "Never" nil)))
(defvar ivy-case-fold-search ivy-case-fold-search-default
"Store the current overriding `case-fold-search'.")
(defcustom ivy-more-chars-alist
'((t . 3))
"Map commands to their minimum required input length.
That is the number of characters prompted for before fetching
candidates. The special key t is used as a fallback."
:type '(alist :key-type symbol :value-type integer))
(defun ivy-more-chars ()
"Return two fake candidates prompting for at least N input.
N is obtained from `ivy-more-chars-alist'."
(let ((diff (- (ivy-alist-setting ivy-more-chars-alist)
(length ivy-text))))
(when (> diff 0)
(list "" (format "%d chars more" diff)))))
(defun ivy--case-fold-p (string)
"Return nil if STRING should be matched case-sensitively."
(if (eq ivy-case-fold-search 'auto)
(string= string (downcase string))
ivy-case-fold-search))
(defun ivy--case-fold-string= (s1 s2)
"Like `string=', but obeys `case-fold-search'."
(eq t (compare-strings s1 nil nil s2 nil nil case-fold-search)))
(defmacro ivy-quit-and-run (&rest body)
"Quit the minibuffer and run BODY afterwards."
(declare (indent 0))
`(progn
(put 'quit 'error-message "")
(run-at-time nil nil
(lambda ()
(put 'quit 'error-message "Quit")
(with-demoted-errors "Error: %S"
,@body)))
(abort-recursive-edit)))
(defun ivy-exit-with-action (action &optional exit-code)
"Quit the minibuffer and call ACTION afterwards."
(ivy-set-action
`(lambda (x)
(funcall ',action x)
(ivy-set-action ',(ivy-state-action ivy-last))))
(setq ivy-exit (or exit-code 'done))
(exit-minibuffer))
(defmacro with-ivy-window (&rest body)
"Execute BODY in the window from which `ivy-read' was called."
(declare (indent 0)
(debug t))
`(with-selected-window (ivy--get-window ivy-last)
,@body))
(defun ivy--expand-file-name (text)
(cond
((eq (ivy-state-history ivy-last) 'grep-files-history)
text)
(ivy--directory
(if (and (string-match-p "^/" text) (file-remote-p ivy--directory))
(let ((parts (split-string ivy--directory ":")))
(concat (nth 0 parts) ":" (nth 1 parts) ":" text))
(expand-file-name text ivy--directory)))
(t
text)))
(defun ivy--done (text)
"Insert TEXT and exit minibuffer."
(if (member (ivy-state-prompt ivy-last) '("Create directory: " "Make directory: "))
(ivy-immediate-done)
(when (stringp text)
(insert
(setf (ivy-state-current ivy-last)
(ivy--expand-file-name text))))
(setq ivy-exit 'done)
(exit-minibuffer)))
(defcustom ivy-use-selectable-prompt nil
"When non-nil, make the prompt line selectable like a candidate.
The prompt line can be selected by calling `ivy-previous-line' when the first
regular candidate is selected. Both actions `ivy-done' and `ivy-alt-done',
when called on a selected prompt, are forwarded to `ivy-immediate-done', which
results to the same as calling `ivy-immediate-done' explicitly when a regular
candidate is selected.
Note that if `ivy-wrap' is set to t, calling `ivy-previous-line' when the
prompt is selected wraps around to the last candidate, while calling
`ivy-next-line' on the last candidate wraps around to the first
candidate, not the prompt."
:type 'boolean)
(defvar ivy--use-selectable-prompt nil
"Store the effective `ivy-use-selectable-prompt' for current session.")
(defun ivy--prompt-selectable-p ()
"Return t if the prompt line is selectable."
(and ivy-use-selectable-prompt
(or (memq (ivy-state-require-match ivy-last)
'(nil confirm confirm-after-completion))
;; :require-match is t, but "" is in the collection
(let ((coll (ivy-state-collection ivy-last)))
(and (listp coll)
(if (consp (car coll))
(member '("") coll)
(member "" coll)))))))
(defun ivy--prompt-selected-p ()
"Return t if the prompt line is selected."
(and ivy--use-selectable-prompt
(= ivy--index -1)))
;;* Commands
(defun ivy-done ()
"Exit the minibuffer with the selected candidate."
(interactive)
(if (ivy--prompt-selected-p)
(ivy-immediate-done)
(setq ivy-current-prefix-arg current-prefix-arg)
(delete-minibuffer-contents)
(cond ((and (= ivy--length 0)
(eq this-command 'ivy-dispatching-done))
(ivy--done ivy-text))
((or (> ivy--length 0)
;; the action from `ivy-dispatching-done' may not need a
;; candidate at all
(eq this-command 'ivy-dispatching-done))
(ivy--done (ivy-state-current ivy-last)))
((and (memq (ivy-state-collection ivy-last)
'(read-file-name-internal internal-complete-buffer))
(eq confirm-nonexistent-file-or-buffer t)
(not (string= " (confirm)" ivy--prompt-extra)))
(setq ivy--prompt-extra " (confirm)")
(insert ivy-text)
(ivy--exhibit))
((memq (ivy-state-require-match ivy-last)
'(nil confirm confirm-after-completion))
(ivy--done ivy-text))
(t
(setq ivy--prompt-extra " (match required)")
(insert ivy-text)
(ivy--exhibit)))))
(defvar ivy-mouse-1-tooltip
"Exit the minibuffer with the selected candidate."
"The doc visible in the tooltip for mouse-1 binding in the minibuffer.")
(defvar ivy-mouse-3-tooltip
"Display alternative actions."
"The doc visible in the tooltip for mouse-3 binding in the minibuffer.")
(defun ivy-mouse-offset (event)
"Compute the offset between the candidate at point and the selected one."
(if event
(let* ((line-number-at-point
(max 2
(line-number-at-pos (posn-point (event-start event)))))
(line-number-candidate ;; convert to 0 based index
(- line-number-at-point 2))
(offset
(- line-number-candidate
ivy--window-index)))
offset)
nil))
(defun ivy-mouse-done (event)
(interactive "@e")
(let ((offset (ivy-mouse-offset event)))
(when offset
(ivy-next-line offset)
(ivy--exhibit)
(ivy-alt-done))))
(defun ivy-mouse-dispatching-done (event)
(interactive "@e")
(let ((offset (ivy-mouse-offset event)))
(when offset
(ivy-next-line offset)
(ivy--exhibit)
(ivy-dispatching-done))))
(defcustom ivy-read-action-format-function 'ivy-read-action-format-default
"Function used to transform the actions list into a docstring."
:type '(radio
(function-item ivy-read-action-format-default)
(function-item ivy-read-action-format-columns)))
(defun ivy-read-action-format-default (actions)
"Create a docstring from ACTIONS.
ACTIONS is a list. Each list item is a list of 3 items:
key (a string), cmd and doc (a string)."
(format "%s\n%s\n"
(if (eq this-command 'ivy-read-action)
"Select action: "
(ivy-state-current ivy-last))
(mapconcat
(lambda (x)
(format "%s: %s"
(propertize
(car x)
'face 'ivy-action)
(nth 2 x)))
actions
"\n")))
(defun ivy-read-action-format-columns (actions)
"Create a docstring from ACTIONS, using several columns if needed to preserve `ivy-height'.
ACTIONS is a list. Each list item is a list of 3 items: key (a
string), cmd and doc (a string)."
(let ((length (length actions))
(i 0)
(max-rows (- ivy-height 1))
rows cols col lwidth rwidth)
(while (< i length)
(setq col (cl-subseq actions i (min length (cl-incf i max-rows))))
(setq lwidth (apply 'max (mapcar (lambda (x)
(length (nth 0 x)))
col)))
(setq rwidth (apply 'max (mapcar (lambda (x)
(length (nth 2 x)))
col)))
(setq col (mapcar (lambda (x)
(format (format "%%%ds: %%-%ds" lwidth rwidth)
(propertize (car x) 'face 'ivy-action)
(nth 2 x)))
col))
(cond
((null rows)
(setq rows (length col)))
((< (length col) rows)
(setq col (append col (make-list (- rows (length col)) "")))))
(push col cols))
(format "%s\n%s\n"
(if (eq this-command 'ivy-read-action)
"Select action: "
(ivy-state-current ivy-last))
(mapconcat 'identity
(apply 'cl-mapcar
(lambda (&rest args)
(mapconcat 'identity args " | "))
(nreverse cols))
"\n"))))
(defcustom ivy-read-action-function #'ivy-read-action-by-key
"Function used to read an action."
:type '(radio
(function-item ivy-read-action-by-key)
(function-item ivy-read-action-ivy)
(function-item ivy-hydra-read-action)))
(defun ivy-read-action ()
"Change the action to one of the available ones.
Return nil for `minibuffer-keyboard-quit' or wrong key during the
selection, non-nil otherwise."
(interactive)
(let ((actions (ivy-state-action ivy-last)))
(if (not (ivy--actionp actions))
t
(let ((ivy--directory ivy--directory))
(funcall ivy-read-action-function actions)))))
(defvar set-message-function)
(defun ivy-read-action-by-key (actions)
(let* ((set-message-function nil)
(hint (funcall ivy-read-action-format-function (cdr actions)))
(resize-mini-windows t)
(key "")
action-idx)
(while (and (setq action-idx (cl-position-if
(lambda (x)
(string-prefix-p key (car x)))
(cdr actions)))
(not (string= key (car (nth action-idx (cdr actions))))))
(setq key (concat key (key-description (vector (read-key hint))))))
(ivy-shrink-after-dispatching)
(cond ((member key '("ESC" "C-g" "M-o"))
nil)
((null action-idx)
(message "%s is not bound" key)
nil)
(t
(message "")
(setcar actions (1+ action-idx))
(ivy-set-action actions)))))
(defvar ivy-marked-candidates nil
"List of marked candidates.
Use `ivy-mark' to populate this.
When this list is non-nil at the end of the session, the action
will be called for each element of this list.")
(defun ivy-read-action-ivy (actions)
"Select an action from ACTIONS using Ivy."
(let ((enable-recursive-minibuffers t))
(if (and (> (minibuffer-depth) 1)
(eq (ivy-state-caller ivy-last) 'ivy-read-action-ivy))
(minibuffer-keyboard-quit)
(let ((ivy-marked-candidates ivy-marked-candidates))
(ivy-read (format "action (%s): " (ivy-state-current ivy-last))
(cl-mapcar
(lambda (a i) (cons (format "[%s] %s" (nth 0 a) (nth 2 a)) i))
(cdr actions) (number-sequence 1 (length (cdr actions))))
:action (lambda (a)
(setcar actions (cdr a))
(ivy-set-action actions))
:caller 'ivy-read-action-ivy)))))
(defun ivy-shrink-after-dispatching ()
"Shrink the window after dispatching when action list is too large."
(when (window-minibuffer-p)
(window-resize nil (- ivy-height (window-height)))))
(defun ivy-dispatching-done ()
"Select one of the available actions and call `ivy-done'."
(interactive)
(let ((ivy-exit 'ivy-dispatching-done))
(when (ivy-read-action)
(ivy-done)))
(ivy-shrink-after-dispatching))
(defun ivy-dispatching-call ()
"Select one of the available actions and call `ivy-call'."
(interactive)
(setq ivy-current-prefix-arg current-prefix-arg)
(let ((actions (copy-sequence (ivy-state-action ivy-last)))
(old-ivy-text ivy-text))
(unwind-protect
(when (ivy-read-action)
(ivy-set-text old-ivy-text)
(ivy-call))
(ivy-set-action actions)))
(ivy-shrink-after-dispatching))
(defun ivy-build-tramp-name (x)
"Reconstruct X into a path.
Is is a cons cell, related to `tramp-get-completion-function'."
(let ((user (car x))
(domain (cadr x)))
(if user
(concat user "@" domain)
domain)))
(declare-function Info-find-node "info")
(declare-function Info-read-node-name-1 "info")
(declare-function tramp-get-completion-function "tramp")
(defcustom ivy-alt-done-functions-alist nil
"Customize what `ivy-alt-done' does per-collection."
:type '(alist :key-type symbol :value-type function))
(defun ivy--completing-fname-p ()
(eq 'file (cdr (assoc
'category
(ignore-errors
(funcall (ivy-state-collection ivy-last) ivy-text nil 'metadata))))))
(defun ivy-alt-done (&optional arg)
"Exit the minibuffer with the selected candidate.
When ARG is t, exit with current text, ignoring the candidates.
When the current candidate during file name completion is a
directory, continue completion from within that directory instead
of exiting. This function is otherwise like `ivy-done'."
(interactive "P")
(setq ivy-current-prefix-arg current-prefix-arg)
(let (alt-done-fn)
(cond ((or arg (ivy--prompt-selected-p))
(ivy-immediate-done))
((setq alt-done-fn (ivy-alist-setting ivy-alt-done-functions-alist))
(funcall alt-done-fn))
((ivy--completing-fname-p)
(ivy--directory-done))
(t
(ivy-done)))))
(defun ivy--info-alt-done ()
(if (member (ivy-state-current ivy-last) '("(./)" "(../)"))
(ivy-quit-and-run
(ivy-read "Go to file: " #'read-file-name-internal
:action (lambda (x)
(Info-find-node
(expand-file-name x ivy--directory)
"Top"))))
(ivy-done)))
(defvar ivy-auto-select-single-candidate nil
"When non-nil, auto-select the candidate if it is the only one.
When t, it is the same as if the user were prompted and selected the candidate
by calling the default action. This variable has no use unless the collection
contains a single candidate.")
(defun ivy--directory-enter ()
(let (dir)
(when (and
(> ivy--length 0)
(not (string= (ivy-state-current ivy-last) "./"))
(setq dir (ivy-expand-file-if-directory (ivy-state-current ivy-last))))
(ivy--cd dir)
(ivy--exhibit))))
(defun ivy--handle-directory (input)
"Detect the next directory based on special values of INPUT."
(cond ((string= input "/")
"/")
((string= input "/sudo::")
(concat input ivy--directory))))
(defun ivy--tramp-candidates ()
(let ((method (match-string 1 ivy-text))
(user (match-string 2 ivy-text))
(rest (match-string 3 ivy-text))
res)
(dolist (x (tramp-get-completion-function method))
(setq res (append res (funcall (car x) (cadr x)))))
(setq res (delq nil res))
(when user
(dolist (x res)