my-emacs-d/elpa/helm-20161004.2242/helm-ring.el
Gergely Polonkai 5598dd3102 Update packages
2016-10-05 13:56:57 +02:00

470 lines
18 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; helm-ring.el --- kill-ring, mark-ring, and register browsers for helm. -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2016 Thierry Volpiatto <thierry.volpiatto@gmail.com>
;; 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/>.
;;; Code:
(require 'cl-lib)
(require 'helm)
(require 'helm-utils)
(require 'helm-help)
(require 'helm-elisp)
(declare-function undo-tree-restore-state-from-register "ext:undo-tree.el" (register))
(defgroup helm-ring nil
"Ring related Applications and libraries for Helm."
:group 'helm)
(defcustom helm-kill-ring-threshold 3
"Minimum length of a candidate to be listed by `helm-source-kill-ring'."
:type 'integer
:group 'helm-ring)
(defcustom helm-kill-ring-max-lines-number 5
"Max number of lines displayed per candidate in kill-ring browser.
If nil or zero (disabled), don't truncate candidate, show all."
:type '(choice (const :tag "Disabled" nil)
(integer :tag "Max number of lines"))
:group 'helm-ring)
(defcustom helm-register-max-offset 160
"Max size of string register entries before truncating."
:group 'helm-ring
:type 'integer)
(defcustom helm-kill-ring-actions
'(("Yank" . helm-kill-ring-action)
("Delete" . (lambda (_candidate)
(cl-loop for cand in (helm-marked-candidates)
do (setq kill-ring
(delete cand kill-ring))))))
"List of actions for kill ring source."
:group 'helm-ring
:type '(alist :key-type string :value-type function))
;;; Kill ring
;;
;;
(defvar helm-kill-ring-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map helm-map)
(define-key map (kbd "M-y") 'helm-next-line)
(define-key map (kbd "M-u") 'helm-previous-line)
map)
"Keymap for `helm-show-kill-ring'.")
(defvar helm-source-kill-ring
(helm-build-sync-source "Kill Ring"
:init (lambda () (helm-attrset 'last-command last-command))
:candidates #'helm-kill-ring-candidates
:filtered-candidate-transformer #'helm-kill-ring-transformer
:action 'helm-kill-ring-actions
:persistent-action (lambda (_candidate) (ignore))
:persistent-help "DoNothing"
:keymap helm-kill-ring-map
:migemo t
:multiline t)
"Source for browse and insert contents of kill-ring.")
(defun helm-kill-ring-candidates ()
(cl-loop for kill in (helm-fast-remove-dups kill-ring :test 'equal)
unless (or (< (length kill) helm-kill-ring-threshold)
(string-match "\\`[\n[:blank:]]+\\'" kill))
collect kill))
(defun helm-kill-ring-transformer (candidates _source)
"Display only the `helm-kill-ring-max-lines-number' lines of candidate."
(cl-loop for i in candidates
when (get-text-property 0 'read-only i)
do (set-text-properties 0 (length i) '(read-only nil) i)
for nlines = (with-temp-buffer (insert i) (count-lines (point-min) (point-max)))
if (and helm-kill-ring-max-lines-number
(> nlines helm-kill-ring-max-lines-number))
collect (cons
(with-temp-buffer
(insert i)
(goto-char (point-min))
(concat
(buffer-substring
(point-min)
(save-excursion
(forward-line helm-kill-ring-max-lines-number)
(point)))
"[...]")) i)
else collect i))
(defun helm-kill-ring-action (str)
"Insert STR in `kill-ring' and set STR to the head.
If this action is executed just after `yank',
replace with STR as yanked string."
(with-helm-current-buffer
(setq kill-ring (delete str kill-ring))
;; Adding a `delete-selection' property
;; to `helm-kill-ring-action' is not working
;; because `this-command' will be `helm-maybe-exit-minibuffer',
;; so use this workaround (Issue #1520).
(when (and (region-active-p) delete-selection-mode)
(delete-region (region-beginning) (region-end)))
(if (not (eq (helm-attr 'last-command helm-source-kill-ring) 'yank))
(insert-for-yank str)
;; from `yank-pop'
(let ((inhibit-read-only t)
(before (< (point) (mark t))))
(if before
(funcall (or yank-undo-function 'delete-region) (point) (mark t))
(funcall (or yank-undo-function 'delete-region) (mark t) (point)))
(setq yank-undo-function nil)
(set-marker (mark-marker) (point) helm-current-buffer)
(insert-for-yank str)
;; Set the window start back where it was in the yank command,
;; if possible.
(set-window-start (selected-window) yank-window-start t)
(when before
;; This is like exchange-point-and-mark, but doesn't activate the mark.
;; It is cleaner to avoid activation, even though the command
;; loop would deactivate the mark because we inserted text.
(goto-char (prog1 (mark t)
(set-marker (mark-marker) (point) helm-current-buffer))))))
(kill-new str)))
;;;; <Mark ring>
;; DO NOT use these sources with other sources use
;; the commands `helm-mark-ring', `helm-global-mark-ring' or
;; `helm-all-mark-rings' instead.
(defun helm-mark-ring-line-string-at-pos (pos)
"Return line string at position POS."
(save-excursion
(goto-char pos)
(forward-line 0)
(let ((line (car (split-string (thing-at-point 'line) "[\n\r]"))))
(if (string= "" line)
"<EMPTY LINE>"
line))))
(defun helm-mark-ring-get-candidates ()
(with-helm-current-buffer
(cl-loop with marks = (if (mark t) (cons (mark-marker) mark-ring) mark-ring)
for i in marks
with max-line-number = (line-number-at-pos (point-max))
with width = (length (number-to-string max-line-number))
for m = (format (concat "%" (number-to-string width) "d: %s")
(line-number-at-pos i)
(helm-mark-ring-line-string-at-pos i))
unless (and recip (member m recip))
collect m into recip
finally return recip)))
(defvar helm-source-mark-ring
(helm-build-sync-source "mark-ring"
:candidates #'helm-mark-ring-get-candidates
:action '(("Goto line"
. (lambda (candidate)
(helm-goto-line (string-to-number candidate)))))
:persistent-action (lambda (candidate)
(helm-goto-line (string-to-number candidate))
(helm-highlight-current-line))
:persistent-help "Show this line"))
;;; Global-mark-ring
(defvar helm-source-global-mark-ring
(helm-build-sync-source "global-mark-ring"
:candidates #'helm-global-mark-ring-get-candidates
:action '(("Goto line"
. (lambda (candidate)
(let ((items (split-string candidate ":")))
(switch-to-buffer (cl-second items))
(helm-goto-line (string-to-number (car items)))))))
:persistent-action (lambda (candidate)
(let ((items (split-string candidate ":")))
(switch-to-buffer (cl-second items))
(helm-goto-line (string-to-number (car items)))
(helm-highlight-current-line)))
:persistent-help "Show this line"))
(defun helm-global-mark-ring-format-buffer (marker)
(with-current-buffer (marker-buffer marker)
(goto-char marker)
(forward-line 0)
(let ((line (pcase (thing-at-point 'line)
((and line (pred stringp)
(guard (not (string-match-p "\\`\n?\\'" line))))
(car (split-string line "[\n\r]")))
(_ "<EMPTY LINE>"))))
(format "%7d:%s: %s"
(line-number-at-pos) (marker-buffer marker) line))))
(defun helm-global-mark-ring-get-candidates ()
(let ((marks global-mark-ring))
(when marks
(cl-loop for i in marks
for mb = (marker-buffer i)
for gm = (unless (or (string-match "^ " (format "%s" mb))
(null mb))
(helm-global-mark-ring-format-buffer i))
when (and gm (not (member gm recip)))
collect gm into recip
finally return recip))))
(defun helm--push-mark (&optional location nomsg activate)
"[Internal] Don't use directly, use instead `helm-push-mark-mode'."
(unless (null (mark t))
(setq mark-ring (cons (copy-marker (mark-marker)) mark-ring))
(when (> (length mark-ring) mark-ring-max)
(move-marker (car (nthcdr mark-ring-max mark-ring)) nil)
(setcdr (nthcdr (1- mark-ring-max) mark-ring) nil)))
(set-marker (mark-marker) (or location (point)) (current-buffer))
;; Now push the mark on the global mark ring.
(setq global-mark-ring (cons (copy-marker (mark-marker))
;; Avoid having multiple entries
;; for same buffer in `global-mark-ring'.
(cl-loop with mb = (current-buffer)
for m in global-mark-ring
for nmb = (marker-buffer m)
unless (eq mb nmb)
collect m)))
(when (> (length global-mark-ring) global-mark-ring-max)
(move-marker (car (nthcdr global-mark-ring-max global-mark-ring)) nil)
(setcdr (nthcdr (1- global-mark-ring-max) global-mark-ring) nil))
(or nomsg executing-kbd-macro (> (minibuffer-depth) 0)
(message "Mark set"))
(when (or activate (not transient-mark-mode))
(set-mark (mark t)))
nil)
;;;###autoload
(define-minor-mode helm-push-mark-mode
"Provide an improved version of `push-mark'.
Modify the behavior of `push-mark' to update
the `global-mark-ring' after each new visit."
:group 'helm-ring
:global t
(if helm-push-mark-mode
(advice-add 'push-mark :override #'helm--push-mark)
(advice-remove 'push-mark #'helm--push-mark)))
;;;; <Register>
;;; Insert from register
(defvar helm-source-register
(helm-build-sync-source "Registers"
:candidates #'helm-register-candidates
:action-transformer #'helm-register-action-transformer
:persistent-help ""
:multiline t
:action '(("Delete Register(s)" .
(lambda (_candidate)
(cl-loop for candidate in (helm-marked-candidates)
for register = (car candidate)
do (setq register-alist
(delq (assoc register register-alist)
register-alist)))))))
"See (info \"(emacs)Registers\")")
(defun helm-register-candidates ()
"Collecting register contents and appropriate commands."
(cl-loop for (char . val) in register-alist
for key = (single-key-description char)
for string-actions =
(cond
((numberp val)
(list (int-to-string val)
'insert-register
'increment-register))
((markerp val)
(let ((buf (marker-buffer val)))
(if (null buf)
(list "a marker in no buffer")
(list (concat
"a buffer position:"
(buffer-name buf)
", position "
(int-to-string (marker-position val)))
'jump-to-register
'insert-register))))
((and (consp val) (window-configuration-p (car val)))
(list "window configuration."
'jump-to-register))
((and (vectorp val)
(fboundp 'undo-tree-register-data-p)
(undo-tree-register-data-p (elt val 1)))
(list
"Undo-tree entry."
'undo-tree-restore-state-from-register))
((or (and (vectorp val) (eq 'registerv (aref val 0)))
(and (consp val) (frame-configuration-p (car val))))
(list "frame configuration."
'jump-to-register))
((and (consp val) (eq (car val) 'file))
(list (concat "file:"
(prin1-to-string (cdr val))
".")
'jump-to-register))
((and (consp val) (eq (car val) 'file-query))
(list (concat "file:a file-query reference: file "
(car (cdr val))
", position "
(int-to-string (car (cdr (cdr val))))
".")
'jump-to-register))
((consp val)
(let ((lines (format "%4d" (length val))))
(list (format "%s: %s\n" lines
(truncate-string-to-width
(mapconcat 'identity (list (car val))
"^J") (- (window-width) 15)))
'insert-register)))
((stringp val)
(list
;; without properties
(concat (substring-no-properties
val 0 (min (length val) helm-register-max-offset))
(if (> (length val) helm-register-max-offset)
"[...]" ""))
'insert-register
'append-to-register
'prepend-to-register)))
unless (null string-actions) ; Fix Issue #1107.
collect (cons (format "Register %3s:\n %s" key (car string-actions))
(cons char (cdr string-actions)))))
(defun helm-register-action-transformer (actions register-and-functions)
"Decide actions by the contents of register."
(cl-loop with transformer-actions = nil
with func-actions =
'((insert-register
"Insert Register" .
(lambda (c) (insert-register (car c))))
(jump-to-register
"Jump to Register" .
(lambda (c) (jump-to-register (car c))))
(append-to-register
"Append Region to Register" .
(lambda (c) (append-to-register
(car c) (region-beginning) (region-end))))
(prepend-to-register
"Prepend Region to Register" .
(lambda (c) (prepend-to-register
(car c) (region-beginning) (region-end))))
(increment-register
"Increment Prefix Arg to Register" .
(lambda (c) (increment-register
helm-current-prefix-arg (car c))))
(undo-tree-restore-state-from-register
"Restore Undo-tree register" .
(lambda (c) (and (fboundp 'undo-tree-restore-state-from-register)
(undo-tree-restore-state-from-register (car c))))))
for func in (cdr register-and-functions)
for cell = (assq func func-actions)
when cell
do (push (cdr cell) transformer-actions)
finally return (append (nreverse transformer-actions) actions)))
;;;###autoload
(defun helm-mark-ring ()
"Preconfigured `helm' for `helm-source-mark-ring'."
(interactive)
(helm :sources 'helm-source-mark-ring
:resume 'noresume
:buffer "*helm mark*"))
;;;###autoload
(defun helm-global-mark-ring ()
"Preconfigured `helm' for `helm-source-global-mark-ring'."
(interactive)
(helm :sources 'helm-source-global-mark-ring
:resume 'noresume
:buffer "*helm global mark*"))
;;;###autoload
(defun helm-all-mark-rings ()
"Preconfigured `helm' for `helm-source-global-mark-ring' and \
`helm-source-mark-ring'."
(interactive)
(helm :sources '(helm-source-mark-ring
helm-source-global-mark-ring)
:resume 'noresume
:buffer "*helm mark ring*"))
;;;###autoload
(defun helm-register ()
"Preconfigured `helm' for Emacs registers."
(interactive)
(helm :sources 'helm-source-register
:resume 'noresume
:buffer "*helm register*"))
;;;###autoload
(defun helm-show-kill-ring ()
"Preconfigured `helm' for `kill-ring'.
It is drop-in replacement of `yank-pop'.
First call open the kill-ring browser, next calls move to next line."
(interactive)
(let ((enable-recursive-minibuffers t))
(helm :sources helm-source-kill-ring
:buffer "*helm kill ring*"
:resume 'noresume
:allow-nest t)))
;;;###autoload
(defun helm-execute-kmacro ()
"Preconfigured helm for keyboard macros.
Define your macros with `f3' and `f4'.
See (info \"(emacs) Keyboard Macros\") for detailed infos.
This command is useful when used with persistent action."
(interactive)
(helm :sources
(helm-build-sync-source "Kmacro"
:candidates (lambda ()
(helm-fast-remove-dups
(cons (kmacro-ring-head)
kmacro-ring)
:test 'equal))
:multiline t
:candidate-transformer
(lambda (candidates)
(cl-loop for c in candidates collect
(propertize (help-key-description (car c) nil)
'helm-realvalue c)))
:persistent-help "Execute kmacro"
:help-message 'helm-kmacro-help-message
:action
(helm-make-actions
"Execute kmacro (`C-u <n>' to execute <n> times)"
(lambda (candidate)
(interactive)
;; Move candidate on top of list for next use.
(setq kmacro-ring (delete candidate kmacro-ring))
(kmacro-push-ring)
(kmacro-split-ring-element candidate)
(kmacro-exec-ring-item
candidate helm-current-prefix-arg))))
:buffer "*helm kmacro*"))
(provide 'helm-ring)
;; Local Variables:
;; byte-compile-warnings: (not cl-functions obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; helm-ring.el ends here