+;;; company.el --- extensible inline text completion mechanism
+;;
+;; Copyright (C) 2009 Nikolaj Schumacher
+;;
+;; Author: Nikolaj Schumacher <bugs * nschum de>
+;; Version: 0.2.1
+;; Keywords: abbrev, convenience, matchis
+;; URL: http://nschum.de/src/emacs/company/
+;; Compatibility: GNU Emacs 22.x, GNU Emacs 23.x
+;;
+;; This file is NOT part of GNU Emacs.
+;;
+;; 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 2
+;; 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:
+;;
+;; Company is a modular completion mechanism. Modules for retrieving completion
+;; candidates are called back-ends, modules for displaying them are front-ends.
+;;
+;; Company comes with many back-ends, e.g. `company-elisp'. These are
+;; distributed in individual files and can be used individually.
+;;
+;; Place company.el and the back-ends you want to use in a directory and add the
+;; following to your .emacs:
+;; (add-to-list 'load-path "/path/to/company")
+;; (autoload 'company-mode "company" nil t)
+;;
+;; Enable company-mode with M-x company-mode. For further information look at
+;; the documentation for `company-mode' (C-h f company-mode RET)
+;;
+;; To write your own back-end, look at the documentation for `company-backends'.
+;; Here is a simple example completing "foo":
+;;
+;; (defun company-my-backend (command &optional arg &rest ignored)
+;; (case command
+;; ('prefix (when (looking-back "foo\\>")
+;; (match-string 0)))
+;; ('candidates (list "foobar" "foobaz" "foobarbaz"))
+;; ('meta (format "This value is named %s" arg))))
+;;
+;; Sometimes it is a good idea to mix two back-ends together, for example to
+;; enrich gtags with dabbrev text (to emulate local variables):
+;;
+;; (defun gtags-gtags-dabbrev-backend (command &optional arg &rest ignored)
+;; (case command
+;; (prefix (company-gtags 'prefix))
+;; (candidates (append (company-gtags 'candidates arg)
+;; (company-dabbrev 'candidates arg)))))
+;;
+;; Known Issues:
+;; When point is at the very end of the buffer, the pseudo-tooltip appears very
+;; wrong, unless company is allowed to temporarily insert a fake newline.
+;; This behavior is enabled by `company-end-of-buffer-workaround'.
+;;
+;;; Change Log:
+;;
+;; 2009-04-05 (0.2.1)
+;; Improved Emacs Lisp back-end behavior for local variables.
+;; Added `company-elisp-detect-function-context' option.
+;; The mouse can now be used for selection.
+;;
+;; 2009-03-22 (0.2)
+;; Added `company-show-location'.
+;; Added etags back-end.
+;; Added work-around for end-of-buffer bug.
+;; Added `company-filter-candidates'.
+;; More local Lisp variables are now included in the candidates.
+;;
+;; 2009-03-21 (0.1.5)
+;; Fixed elisp documentation buffer always showing the same doc.
+;; Added `company-echo-strip-common-frontend'.
+;; Added `company-show-numbers' option and M-0 ... M-9 default bindings.
+;; Don't hide the echo message if it isn't shown.
+;;
+;; 2009-03-20 (0.1)
+;; Initial release.
+;;
+;;; Code:
+
(eval-when-compile (require 'cl))
(add-to-list 'debug-ignored-errors
"^Pseudo tooltip frontend cannot be used twice$")
(add-to-list 'debug-ignored-errors "^Preview frontend cannot be used twice$")
+(add-to-list 'debug-ignored-errors "^Echo area cannot be used twice$")
+(add-to-list 'debug-ignored-errors "^No documentation available$")
+(add-to-list 'debug-ignored-errors "^No location available$")
+(add-to-list 'debug-ignored-errors "^Company not enabled$")
+(add-to-list 'debug-ignored-errors "^Company not in search mode$")
+(add-to-list 'debug-ignored-errors "^No candidate number ")
(defgroup company nil
- ""
+ "Extensible inline text completion mechanism"
:group 'abbrev
:group 'convenience
:group 'maching)
(defface company-tooltip
'((t :background "yellow"
:foreground "black"))
- "*"
+ "*Face used for the tool tip."
:group 'company)
(defface company-tooltip-selection
- '((t :background "orange1"
- :foreground "black"))
- "*"
+ '((default :inherit company-tooltip)
+ (((class color) (min-colors 88)) (:background "orange1"))
+ (t (:background "green")))
+ "*Face used for the selection in the tool tip."
+ :group 'company)
+
+(defface company-tooltip-mouse
+ '((default :inherit highlight))
+ "*Face used for the tool tip item under the mouse."
:group 'company)
(defface company-tooltip-common
'((t :inherit company-tooltip
:foreground "red"))
- "*"
+ "*Face used for the common completion in the tool tip."
:group 'company)
(defface company-tooltip-common-selection
'((t :inherit company-tooltip-selection
:foreground "red"))
- "*"
+ "*Face used for the selected common completion in the tool tip."
:group 'company)
(defcustom company-tooltip-limit 10
- "*"
+ "*The maximum number of candidates in the tool tip"
:group 'company
:type 'integer)
(defface company-preview
'((t :background "blue4"
:foreground "wheat"))
- "*"
+ "*Face used for the completion preview."
:group 'company)
(defface company-preview-common
'((t :inherit company-preview
:foreground "red"))
- "*"
+ "*Face used for the common part of the completion preview."
+ :group 'company)
+
+(defface company-preview-search
+ '((t :inherit company-preview
+ :background "blue1"))
+ "*Face used for the search string in the completion preview."
:group 'company)
(defface company-echo nil
- "*"
+ "*Face used for completions in the echo area."
:group 'company)
(defface company-echo-common
'((((background dark)) (:foreground "firebrick1"))
(((background light)) (:background "firebrick4")))
- "*"
+ "*Face used for the common part of completions in the echo area."
:group 'company)
(defun company-frontends-set (variable value)
(and (memq 'company-preview-if-just-one-frontend value)
(memq 'company-preview-frontend value)
(error "Preview frontend cannot be used twice"))
+ (and (memq 'company-echo value)
+ (memq 'company-echo-metadata-frontend value)
+ (error "Echo area cannot be used twice"))
;; preview must come last
(dolist (f '(company-preview-if-just-one-frontend company-preview-frontend))
(when (memq f value)
(setq value (append (delq f value) (list f)))))
(set variable value))
-(defcustom company-frontends '(company-echo-frontend
- company-pseudo-tooltip-unless-just-one-frontend
- company-preview-if-just-one-frontend)
- "*"
+(defcustom company-frontends '(company-pseudo-tooltip-unless-just-one-frontend
+ company-preview-frontend
+ company-echo-metadata-frontend)
+ "*The list of active front-ends (visualizations).
+Each front-end is a function that takes one argument. It is called with
+one of the following arguments:
+
+'show: When the visualization should start.
+
+'hide: When the visualization should end.
+
+'update: When the data has been updated.
+
+'pre-command: Before every command that is executed while the
+visualization is active.
+
+'post-command: After every command that is executed while the
+visualization is active.
+
+The visualized data is stored in `company-prefix', `company-candidates',
+`company-common', `company-selection', `company-point' and
+`company-search-string'."
:set 'company-frontends-set
:group 'company
:type '(repeat (choice (const :tag "echo" company-echo-frontend)
+ (const :tag "echo, strip common"
+ company-echo-strip-common-frontend)
+ (const :tag "show echo meta-data in echo"
+ company-echo-metadata-frontend)
(const :tag "pseudo tooltip"
company-pseudo-tooltip-frontend)
(const :tag "pseudo tooltip, multiple only"
company-preview-if-just-one-frontend)
(function :tag "custom function" nil))))
-(defcustom company-backends '(company-elisp company-nxml company-css)
- "*"
+(defcustom company-backends '(company-elisp company-nxml company-css
+ company-semantic company-gtags company-etags
+ company-oddmuse company-files company-dabbrev)
+ "*The list of active back-ends (completion engines).
+Each back-end is a function that takes a variable number of arguments.
+The first argument is the command requested from the back-end. It is one
+of the following:
+
+'prefix: The back-end should return the text to be completed. It must be
+text immediately before `point'. Returning nil passes control to the next
+back-end.
+
+'candidates: The second argument is the prefix to be completed. The
+return value should be a list of candidates that start with the prefix.
+
+Optional commands:
+
+'sorted: The back-end may return t here to indicate that the candidates
+are sorted and will not need to be sorted again.
+
+'no-cache: Usually company doesn't ask for candidates again as completion
+progresses, unless the back-end returns t for this command. The second
+argument is the latest prefix.
+
+'meta: The second argument is a completion candidate. The back-end should
+return a (short) documentation string for it.
+
+'doc-buffer: The second argument is a completion candidate. The back-end should
+create a buffer (preferably with `company-doc-buffer'), fill it with
+documentation and return it.
+
+'location: The second argument is a completion candidate. The back-end can
+return the cons of buffer and buffer location, or of file and line
+number where the completion candidate was defined.
+
+The back-end should return nil for all commands it does not support or
+does not know about."
:group 'company
:type '(repeat (function :tag "function" nil)))
(defcustom company-minimum-prefix-length 3
- "*"
+ "*The minimum prefix length for automatic completion."
:group 'company
:type '(integer :tag "prefix length"))
-(defvar company-timer nil)
-
-(defun company-timer-set (variable value)
- (set variable value)
- (when company-timer (cancel-timer company-timer))
- (when (numberp value)
- (setq company-timer (run-with-idle-timer value t 'company-idle-begin))))
-
(defcustom company-idle-delay .7
- "*"
- :set 'company-timer-set
+ "*The idle delay in seconds until automatic completions starts.
+A value of nil means never complete automatically, t means complete
+immediately when a prefix of `company-minimum-prefix-length' is reached."
:group 'company
:type '(choice (const :tag "never (nil)" nil)
(const :tag "immediate (t)" t)
(number :tag "seconds")))
+(defcustom company-show-numbers nil
+ "*If enabled, show quick-access numbers for the first ten candidates."
+ :group 'company
+ :type '(choice (const :tag "off" nil)
+ (const :tag "on" t)))
+
+(defvar company-end-of-buffer-workaround t
+ "*Work around a visualization bug when completing at the end of the buffer.
+The work-around consists of adding a newline.")
+
;;; mode ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-(defvar company-mode-map
+(defvar company-mode-map (make-sparse-keymap)
+ "Keymap used by `company-mode'.")
+
+(defvar company-active-map
(let ((keymap (make-sparse-keymap)))
(define-key keymap (kbd "M-n") 'company-select-next)
(define-key keymap (kbd "M-p") 'company-select-previous)
- (define-key keymap (kbd "M-<return>") 'company-complete-selection)
+ (define-key keymap (kbd "<down>") 'company-select-next)
+ (define-key keymap (kbd "<up>") 'company-select-previous)
+ (define-key keymap [down-mouse-1] 'ignore)
+ (define-key keymap [down-mouse-3] 'ignore)
+ (define-key keymap [mouse-1] 'company-complete-mouse)
+ (define-key keymap [mouse-3] 'company-select-mouse)
+ (define-key keymap [up-mouse-1] 'ignore)
+ (define-key keymap [up-mouse-3] 'ignore)
+ (define-key keymap "\C-m" 'company-complete-selection)
(define-key keymap "\t" 'company-complete-common)
- keymap))
+ (define-key keymap (kbd "<f1>") 'company-show-doc-buffer)
+ (define-key keymap "\C-w" 'company-show-location)
+ (define-key keymap "\C-s" 'company-search-candidates)
+ (define-key keymap "\C-\M-s" 'company-filter-candidates)
+ (dotimes (i 10)
+ (define-key keymap (vector (+ (aref (kbd "M-0") 0) i))
+ `(lambda () (interactive) (company-complete-number ,i))))
+
+ keymap)
+ "Keymap that is enabled during an active completion.")
;;;###autoload
(define-minor-mode company-mode
- ""
+ "\"complete anything\"; in in-buffer completion framework.
+Completion starts automatically, depending on the values
+`company-idle-delay' and `company-minimum-prefix-length'.
+
+Completion can be controlled with the commands:
+`company-complete-common', `company-complete-selection', `company-complete',
+`company-select-next', `company-select-previous'. If these commands are
+called before `company-idle-delay', completion will also start.
+
+Completions can be searched with `company-search-candidates' or
+`company-filter-candidates'. These can be used while completion is
+inactive, as well.
+
+The completion data is retrieved using `company-backends' and displayed using
+`company-frontends'.
+
+regular keymap (`company-mode-map'):
+
+\\{company-mode-map}
+keymap during active completions (`company-active-map'):
+
+\\{company-active-map}"
nil " comp" company-mode-map
(if company-mode
(progn
(add-hook 'pre-command-hook 'company-pre-command nil t)
(add-hook 'post-command-hook 'company-post-command nil t)
- (company-timer-set 'company-idle-delay
- company-idle-delay))
+ (dolist (backend company-backends)
+ (unless (fboundp backend)
+ (ignore-errors (require backend nil t)))
+ (unless (fboundp backend)
+ (message "Company back-end '%s' could not be initialized"
+ backend))))
(remove-hook 'pre-command-hook 'company-pre-command t)
(remove-hook 'post-command-hook 'company-post-command t)
(company-cancel)
(kill-local-variable 'company-point)))
+;;; keymaps ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defvar company-overriding-keymap-bound nil)
+(make-variable-buffer-local 'company-overriding-keymap-bound)
+
+(defvar company-old-keymap nil)
+(make-variable-buffer-local 'company-old-keymap)
+
+(defvar company-my-keymap nil)
+(make-variable-buffer-local 'company-my-keymap)
+
+(defsubst company-enable-overriding-keymap (keymap)
+ (setq company-my-keymap keymap)
+ (when company-overriding-keymap-bound
+ (company-uninstall-map)))
+
+(defun company-install-map ()
+ (unless (or company-overriding-keymap-bound
+ (null company-my-keymap))
+ (setq company-old-keymap overriding-terminal-local-map
+ overriding-terminal-local-map company-my-keymap
+ company-overriding-keymap-bound t)))
+
+(defun company-uninstall-map ()
+ (when (and company-overriding-keymap-bound
+ (eq overriding-terminal-local-map company-my-keymap))
+ (setq overriding-terminal-local-map company-old-keymap
+ company-overriding-keymap-bound nil)))
+
+;; Hack:
+;; Emacs calculates the active keymaps before reading the event. That means we
+;; cannot change the keymap from a timer. So we send a bogus command.
+(defun company-ignore ()
+ (interactive))
+
+(global-set-key '[31415926] 'company-ignore)
+
+(defun company-input-noop ()
+ (push 31415926 unread-command-events))
+
;;; backends ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun company-grab (regexp &optional expression)
(defvar company-candidates nil)
(make-variable-buffer-local 'company-candidates)
+(defvar company-candidates-length nil)
+(make-variable-buffer-local 'company-candidates-length)
+
+(defvar company-candidates-cache nil)
+(make-variable-buffer-local 'company-candidates-cache)
+
+(defvar company-candidates-predicate nil)
+(make-variable-buffer-local 'company-candidates-predicate)
+
(defvar company-common nil)
(make-variable-buffer-local 'company-common)
(defvar company-point nil)
(make-variable-buffer-local 'company-point)
-(defvar company-disabled-backends nil)
+(defvar company-timer nil)
+
+(defvar company-added-newline nil)
+(make-variable-buffer-local 'company-added-newline)
(defsubst company-strip-prefix (str)
(substring str (length company-prefix)))
-(defsubst company-offset (display-limit)
- (let ((offset (- company-selection display-limit -1)))
- (max offset 0)))
+(defsubst company-reformat (candidate)
+ ;; company-ispell needs this, because the results are always lower-case
+ ;; It's mory efficient to fix it only when they are displayed.
+ (concat company-prefix (substring candidate (length company-prefix))))
(defsubst company-should-complete (prefix)
(and (eq company-idle-delay t)
(defsubst company-call-frontends (command)
(dolist (frontend company-frontends)
- (funcall frontend command)))
+ (condition-case err
+ (funcall frontend command)
+ (error (error "Company: Front-end %s error \"%s\" on command %s"
+ frontend (error-message-string err) command)))))
+
+(defsubst company-set-selection (selection &optional force-update)
+ (setq selection (max 0 (min (1- company-candidates-length) selection)))
+ (when (or force-update (not (equal selection company-selection)))
+ (setq company-selection selection
+ company-selection-changed t)
+ (company-call-frontends 'update)))
+
+(defun company-apply-predicate (candidates predicate)
+ (let (new)
+ (dolist (c candidates)
+ (when (funcall predicate c)
+ (push c new)))
+ (nreverse new)))
-(defun company-idle-begin ()
+(defun company-update-candidates (candidates)
+ (setq company-candidates-length (length candidates))
+ (if (> company-selection 0)
+ ;; Try to restore the selection
+ (let ((selected (nth company-selection company-candidates)))
+ (setq company-selection 0
+ company-candidates candidates)
+ (when selected
+ (while (and candidates (string< (pop candidates) selected))
+ (incf company-selection))
+ (unless candidates
+ ;; Make sure selection isn't out of bounds.
+ (setq company-selection (min (1- company-candidates-length)
+ company-selection)))))
+ (setq company-selection 0
+ company-candidates candidates))
+ ;; Calculate common.
+ (let ((completion-ignore-case (funcall company-backend 'ignore-case)))
+ (setq company-common (try-completion company-prefix company-candidates)))
+ (when (eq company-common t)
+ (setq company-candidates nil)))
+
+(defsubst company-calculate-candidates (prefix)
+ (setq company-prefix prefix)
+ (company-update-candidates
+ (or (cdr (assoc prefix company-candidates-cache))
+ (when company-candidates-cache
+ (let ((len (length prefix))
+ (completion-ignore-case (funcall company-backend 'ignore-case))
+ prev)
+ (dotimes (i len)
+ (when (setq prev (cdr (assoc (substring prefix 0 (- len i))
+ company-candidates-cache)))
+ (return (all-completions prefix prev))))))
+ (let ((candidates (funcall company-backend 'candidates prefix)))
+ (when company-candidates-predicate
+ (setq candidates
+ (company-apply-predicate candidates
+ company-candidates-predicate)))
+ (unless (funcall company-backend 'sorted)
+ (setq candidates (sort candidates 'string<)))
+ candidates)))
+ (unless company-candidates-cache
+ (company-call-frontends 'show))
+ (unless (assoc prefix company-candidates-cache)
+ (push (cons prefix company-candidates) company-candidates-cache))
+ company-candidates)
+
+(defun company-idle-begin (buf win tick pos)
(and company-mode
+ (eq buf (current-buffer))
+ (eq win (selected-window))
+ (eq tick (buffer-chars-modified-tick))
+ (eq pos (point))
(not company-candidates)
(not (equal (point) company-point))
(let ((company-idle-delay t))
(company-begin)
- (company-post-command))))
+ (when company-candidates
+ (company-input-noop)
+ (company-post-command)))))
(defun company-manual-begin ()
+ (interactive)
+ (unless company-mode (error "Company not enabled"))
(and company-mode
(not company-candidates)
(let ((company-idle-delay t)
;; Return non-nil if active.
company-candidates)
-(defun company-continue-or-cancel ()
+(defun company-continue ()
(when company-candidates
- (let ((old-point (- company-point (length company-prefix)))
- (company-idle-delay t)
- (company-minimum-prefix-length 0))
- ;; TODO: Make more efficient.
- (setq company-candidates nil)
- (company-begin)
- (unless (and company-candidates
- (equal old-point (- company-point (length company-prefix))))
- (company-cancel))
- company-candidates)))
+ (when (funcall company-backend 'no-cache company-prefix)
+ ;; Don't complete existing candidates, fetch new ones.
+ (setq company-candidates-cache nil))
+ (let ((new-prefix (funcall company-backend 'prefix)))
+ (unless (and (= (- (point) (length new-prefix))
+ (- company-point (length company-prefix)))
+ (or (equal company-prefix new-prefix)
+ (company-calculate-candidates new-prefix)))
+ (setq company-candidates nil)))))
(defun company-begin ()
- (or (company-continue-or-cancel)
- (let ((completion-ignore-case nil) ;; TODO: make this optional
- prefix)
+ (if (or buffer-read-only overriding-terminal-local-map overriding-local-map)
+ ;; Don't complete in these cases.
+ (setq company-candidates nil)
+ (company-continue)
+ (unless company-candidates
+ (let (prefix)
(dolist (backend company-backends)
- (unless (fboundp backend)
- (ignore-errors (require backend nil t)))
- (if (fboundp backend)
- (when (setq prefix (funcall backend 'prefix))
- (when (company-should-complete prefix)
- (setq company-backend backend
- company-prefix prefix
- company-candidates
- (funcall company-backend 'candidates prefix)
- company-common
- (try-completion prefix company-candidates)
- company-selection 0
- company-point (point))
- (unless (funcall company-backend 'sorted)
- (setq company-candidates
- (sort company-candidates 'string<)))
- (company-call-frontends 'update))
- (return prefix))
- (unless (memq backend company-disabled-backends)
- (push backend company-disabled-backends)
- (message "Company back-end '%s' could not be initialized"
- backend))))
- (unless (and company-candidates
- (not (eq t company-common)))
- (company-cancel)))))
+ (when (and (fboundp backend)
+ (setq prefix (funcall backend 'prefix)))
+ (setq company-backend backend)
+ (when (company-should-complete prefix)
+ (company-calculate-candidates prefix))
+ (return prefix))))))
+ (if company-candidates
+ (progn
+ (when (and company-end-of-buffer-workaround (eobp))
+ (save-excursion (insert "\n"))
+ (setq company-added-newline (buffer-chars-modified-tick)))
+ (setq company-point (point))
+ (company-enable-overriding-keymap company-active-map)
+ (company-call-frontends 'update))
+ (company-cancel)))
(defun company-cancel ()
- (setq company-backend nil
+ (and company-added-newline
+ (> (point-max) (point-min))
+ (let ((tick (buffer-chars-modified-tick)))
+ (delete-region (1- (point-max)) (point-max))
+ (equal tick company-added-newline))
+ ;; Only set unmodified when tick remained the same since insert.
+ (set-buffer-modified-p nil))
+ (setq company-added-newline nil
+ company-backend nil
company-prefix nil
company-candidates nil
+ company-candidates-length nil
+ company-candidates-cache nil
+ company-candidates-predicate nil
company-common nil
company-selection 0
company-selection-changed nil
company-point nil)
- (company-call-frontends 'hide))
+ (when company-timer
+ (cancel-timer company-timer))
+ (company-search-mode 0)
+ (company-call-frontends 'hide)
+ (company-enable-overriding-keymap nil))
(defun company-abort ()
(company-cancel)
;; Don't start again, unless started manually.
(setq company-point (point)))
+(defsubst company-keep (command)
+ (and (symbolp command) (get command 'company-keep)))
+
(defun company-pre-command ()
- (when company-candidates
- (company-call-frontends 'pre-command)))
+ (unless (company-keep this-command)
+ (condition-case err
+ (when company-candidates
+ (company-call-frontends 'pre-command))
+ (error (message "Company: An error occurred in pre-command")
+ (message "%s" (error-message-string err))
+ (company-cancel))))
+ (when company-timer
+ (cancel-timer company-timer))
+ (company-uninstall-map))
(defun company-post-command ()
- (unless (equal (point) company-point)
- (company-begin))
- (when company-candidates
- (company-call-frontends 'post-command)))
+ (unless (company-keep this-command)
+ (condition-case err
+ (progn
+ (unless (equal (point) company-point)
+ (company-begin))
+ (when company-candidates
+ (company-call-frontends 'post-command))
+ (when (numberp company-idle-delay)
+ (setq company-timer
+ (run-with-timer company-idle-delay nil 'company-idle-begin
+ (current-buffer) (selected-window)
+ (buffer-chars-modified-tick) (point)))))
+ (error (message "Company: An error occurred in post-command")
+ (message "%s" (error-message-string err))
+ (company-cancel))))
+ (company-install-map))
+
+;;; search ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defvar company-search-string nil)
+(make-variable-buffer-local 'company-search-string)
+
+(defvar company-search-lighter " Search: \"\"")
+(make-variable-buffer-local 'company-search-lighter)
+
+(defvar company-search-old-map nil)
+(make-variable-buffer-local 'company-search-old-map)
+
+(defvar company-search-old-selection 0)
+(make-variable-buffer-local 'company-search-old-selection)
+
+(defun company-search (text lines)
+ (let ((quoted (regexp-quote text))
+ (i 0))
+ (dolist (line lines)
+ (when (string-match quoted line (length company-prefix))
+ (return i))
+ (incf i))))
+
+(defun company-search-printing-char ()
+ (interactive)
+ (unless company-mode (error "Company not enabled"))
+ (unless company-search-mode (error "Company not in search mode"))
+ (setq company-search-string
+ (concat (or company-search-string "") (string last-command-event))
+ company-search-lighter (concat " Search: \"" company-search-string
+ "\""))
+ (let ((pos (company-search company-search-string
+ (nthcdr company-selection company-candidates))))
+ (if (null pos)
+ (ding)
+ (company-set-selection (+ company-selection pos) t))))
+
+(defun company-search-repeat-forward ()
+ "Repeat the incremental search in completion candidates forward."
+ (interactive)
+ (unless company-mode (error "Company not enabled"))
+ (unless company-search-mode (error "Company not in search mode"))
+ (let ((pos (company-search company-search-string
+ (cdr (nthcdr company-selection
+ company-candidates)))))
+ (if (null pos)
+ (ding)
+ (company-set-selection (+ company-selection pos 1) t))))
+
+(defun company-search-repeat-backward ()
+ "Repeat the incremental search in completion candidates backwards."
+ (interactive)
+ (unless company-mode (error "Company not enabled"))
+ (unless company-search-mode (error "Company not in search mode"))
+ (let ((pos (company-search company-search-string
+ (nthcdr (- company-candidates-length
+ company-selection)
+ (reverse company-candidates)))))
+ (if (null pos)
+ (ding)
+ (company-set-selection (- company-selection pos 1) t))))
+
+(defun company-create-match-predicate ()
+ (setq company-candidates-predicate
+ `(lambda (candidate)
+ ,(if company-candidates-predicate
+ `(and (string-match ,company-search-string candidate)
+ (funcall ,company-candidates-predicate
+ candidate))
+ `(string-match ,company-search-string candidate))))
+ (company-update-candidates
+ (company-apply-predicate company-candidates company-candidates-predicate))
+ ;; Invalidate cache.
+ (setq company-candidates-cache (cons company-prefix company-candidates)))
+
+(defun company-filter-printing-char ()
+ (interactive)
+ (unless company-mode (error "Company not enabled"))
+ (unless company-search-mode (error "Company not in search mode"))
+ (company-search-printing-char)
+ (company-create-match-predicate)
+ (company-call-frontends 'update))
+
+(defun company-search-kill-others ()
+ "Limit the completion candidates to the ones matching the search string."
+ (interactive)
+ (unless company-mode (error "Company not enabled"))
+ (unless company-search-mode (error "Company not in search mode"))
+ (company-create-match-predicate)
+ (company-search-mode 0)
+ (company-call-frontends 'update))
+
+(defun company-search-abort ()
+ "Abort searching the completion candidates."
+ (interactive)
+ (unless company-mode (error "Company not enabled"))
+ (unless company-search-mode (error "Company not in search mode"))
+ (company-set-selection company-search-old-selection t)
+ (company-search-mode 0))
+
+(defun company-search-other-char ()
+ (interactive)
+ (unless company-mode (error "Company not enabled"))
+ (unless company-search-mode (error "Company not in search mode"))
+ (company-search-mode 0)
+ (when last-input-event
+ (clear-this-command-keys t)
+ (setq unread-command-events (list last-input-event))))
+
+(defvar company-search-map
+ (let ((i 0)
+ (keymap (make-keymap)))
+ (if (fboundp 'max-char)
+ (set-char-table-range (nth 1 keymap) (cons #x100 (max-char))
+ 'company-search-printing-char)
+ (with-no-warnings
+ ;; obselete in Emacs 23
+ (let ((l (generic-character-list))
+ (table (nth 1 keymap)))
+ (while l
+ (set-char-table-default table (car l) 'company-search-printing-char)
+ (setq l (cdr l))))))
+ (define-key keymap [t] 'company-search-other-char)
+ (while (< i ?\s)
+ (define-key keymap (make-string 1 i) 'company-search-other-char)
+ (incf i))
+ (while (< i 256)
+ (define-key keymap (vector i) 'company-search-printing-char)
+ (incf i))
+ (let ((meta-map (make-sparse-keymap)))
+ (define-key keymap (char-to-string meta-prefix-char) meta-map)
+ (define-key keymap [escape] meta-map))
+ (define-key keymap (vector meta-prefix-char t) 'company-search-other-char)
+ (define-key keymap "\e\e\e" 'company-search-other-char)
+ (define-key keymap [escape escape escape] 'company-search-other-char)
+
+ (define-key keymap "\C-g" 'company-search-abort)
+ (define-key keymap "\C-s" 'company-search-repeat-forward)
+ (define-key keymap "\C-r" 'company-search-repeat-backward)
+ (define-key keymap "\C-o" 'company-search-kill-others)
+ keymap)
+ "Keymap used for incrementally searching the completion candidates.")
+
+(define-minor-mode company-search-mode
+ "Search mode for completion candidates.
+Don't start this directly, use `company-search-candidates' or
+`company-filter-candidates'."
+ nil company-search-lighter nil
+ (if company-search-mode
+ (if (company-manual-begin)
+ (progn
+ (setq company-search-old-selection company-selection)
+ (company-call-frontends 'update))
+ (setq company-search-mode nil))
+ (kill-local-variable 'company-search-string)
+ (kill-local-variable 'company-search-lighter)
+ (kill-local-variable 'company-search-old-selection)
+ (company-enable-overriding-keymap company-active-map)))
+
+(defun company-search-candidates ()
+ "Start searching the completion candidates incrementally.
+
+\\<company-search-map>Search can be controlled with the commands:
+- `company-search-repeat-forward' (\\[company-search-repeat-forward])
+- `company-search-repeat-backward' (\\[company-search-repeat-backward])
+- `company-search-abort' (\\[company-search-abort])
+
+Regular characters are appended to the search string.
+
+The command `company-search-kill-others' (\\[company-search-kill-others]) uses
+ the search string to limit the completion candidates."
+ (interactive)
+ (company-search-mode 1)
+ (company-enable-overriding-keymap company-search-map))
+
+(defvar company-filter-map
+ (let ((keymap (make-keymap)))
+ (define-key keymap [remap company-search-printing-char]
+ 'company-filter-printing-char)
+ (set-keymap-parent keymap company-search-map)
+ keymap)
+ "Keymap used for incrementally searching the completion candidates.")
+
+(defun company-filter-candidates ()
+ "Start filtering the completion candidates incrementally.
+This works the same way as `company-search-candidates' immediately
+followed by `company-search-kill-others' after each input."
+ (interactive)
+ (company-search-mode 1)
+ (company-enable-overriding-keymap company-filter-map))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun company-select-next ()
+ "Select the next candidate in the list."
(interactive)
(when (company-manual-begin)
- (setq company-selection (min (1- (length company-candidates))
- (1+ company-selection))
- company-selection-changed t)))
+ (company-set-selection (1+ company-selection))))
(defun company-select-previous ()
+ "Select the previous candidate in the list."
(interactive)
(when (company-manual-begin)
- (setq company-selection (max 0 (1- company-selection))
- company-selection-changed t)))
+ (company-set-selection (1- company-selection))))
+
+(defun company-select-mouse (event)
+ "Select the candidate picked by the mouse."
+ (interactive "e")
+ (when (nth 4 (event-start event))
+ (company-set-selection (- (cdr (posn-col-row (event-start event)))
+ (cdr (posn-col-row (posn-at-point)))
+ 1))
+ t))
+
+(defun company-complete-mouse (event)
+ "Complete the candidate picked by the mouse."
+ (interactive "e")
+ (when (company-select-mouse event)
+ (company-complete-selection)))
(defun company-complete-selection ()
+ "Complete the selected candidate."
(interactive)
(when (company-manual-begin)
(insert (company-strip-prefix (nth company-selection company-candidates)))
(company-abort)))
(defun company-complete-common ()
+ "Complete the common part of all candidates."
(interactive)
(when (company-manual-begin)
(insert (company-strip-prefix company-common))))
+(defun company-complete ()
+ "Complete the common part of all candidates or the current selection.
+The first time this is called, the common part is completed, the second time, or
+when the selection has been changed, the selected candidate is completed."
+ (interactive)
+ (when (company-manual-begin)
+ (if (or company-selection-changed
+ (eq last-command 'company-complete-common))
+ (call-interactively 'company-complete-selection)
+ (call-interactively 'company-complete-common)
+ (setq this-command 'company-complete-common))))
+
+(defun company-complete-number (n)
+ "Complete the Nth candidate."
+ (when (company-manual-begin)
+ (and (< n 1) (> n company-candidates-length)
+ (error "No candidate number %d" n))
+ (decf n)
+ (insert (company-strip-prefix (nth n company-candidates)))
+ (company-abort)))
+
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defconst company-space-strings-limit 100)
(company-space-string (- to len)))
(substring str from to)))))
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defvar company-last-metadata nil)
+(make-variable-buffer-local 'company-last-metadata)
+
+(defun company-fetch-metadata ()
+ (let ((selected (nth company-selection company-candidates)))
+ (unless (equal selected (car company-last-metadata))
+ (setq company-last-metadata
+ (cons selected (funcall company-backend 'meta selected))))
+ (cdr company-last-metadata)))
+
+(defun company-doc-buffer (&optional string)
+ (with-current-buffer (get-buffer-create "*Company meta-data*")
+ (erase-buffer)
+ (current-buffer)))
+
+(defmacro company-electric (&rest body)
+ (declare (indent 0) (debug t))
+ `(if company-mode
+ (when (company-manual-begin)
+ (save-window-excursion
+ (let ((height (window-height))
+ (row (cdr (posn-col-row (posn-at-point)))))
+ ,@body
+ (and (< (window-height) height)
+ (< (- (window-height) row 2) company-tooltip-limit)
+ (recenter (- (window-height) row 2)))
+ (while (eq 'scroll-other-window
+ (key-binding (vector (list (read-event)))))
+ (call-interactively 'scroll-other-window))
+ (when last-input-event
+ (clear-this-command-keys t)
+ (setq unread-command-events (list last-input-event))))))
+ (error "Company not enabled")))
+
+(defun company-show-doc-buffer ()
+ "Temporarily show a buffer with the complete documentation for the selection."
+ (interactive)
+ (company-electric
+ (let ((selected (nth company-selection company-candidates)))
+ (display-buffer (or (funcall company-backend 'doc-buffer selected)
+ (error "No documentation available")) t))))
+(put 'company-show-doc-buffer 'company-keep t)
+
+(defun company-show-location ()
+ "Temporarily display a buffer showing the selected candidate in context."
+ (interactive)
+ (company-electric
+ (let* ((selected (nth company-selection company-candidates))
+ (location (funcall company-backend 'location selected))
+ (pos (or (cdr location) (error "No location available")))
+ (buffer (or (and (bufferp (car location)) (car location))
+ (find-file-noselect (car location) t))))
+ (with-selected-window (display-buffer buffer t)
+ (if (bufferp (car location))
+ (goto-char pos)
+ (goto-line pos))
+ (set-window-start nil (point))))))
+(put 'company-show-location 'company-keep t)
+
;;; pseudo-tooltip ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar company-pseudo-tooltip-overlay nil)
(make-variable-buffer-local 'company-pseudo-tooltip-overlay)
+(defvar company-tooltip-offset 0)
+(make-variable-buffer-local 'company-tooltip-offset)
+
+(defun company-pseudo-tooltip-update-offset (selection num-lines limit)
+
+ (decf limit 2)
+ (setq company-tooltip-offset
+ (max (min selection company-tooltip-offset)
+ (- selection -1 limit)))
+
+ (when (<= company-tooltip-offset 1)
+ (incf limit)
+ (setq company-tooltip-offset 0))
+
+ (when (>= company-tooltip-offset (- num-lines limit 1))
+ (incf limit)
+ (when (= selection (1- num-lines))
+ (decf company-tooltip-offset)
+ (when (<= company-tooltip-offset 1)
+ (setq company-tooltip-offset 0)
+ (incf limit))))
+
+ limit)
+
;;; propertize
+(defsubst company-round-tab (arg)
+ (* (/ (+ arg tab-width) tab-width) tab-width))
+
+(defun company-untabify (str)
+ (let* ((pieces (split-string str "\t"))
+ (copy pieces))
+ (while (cdr copy)
+ (setcar copy (company-safe-substring
+ (car copy) 0 (company-round-tab (string-width (car copy)))))
+ (pop copy))
+ (apply 'concat pieces)))
+
(defun company-fill-propertize (line width selected)
(setq line (company-safe-substring line 0 width))
- (add-text-properties 0 width
- (list 'face (if selected
- 'company-tooltip-selection
- 'company-tooltip)) line)
+ (add-text-properties 0 width '(face company-tooltip
+ mouse-face company-tooltip-mouse)
+ line)
(add-text-properties 0 (length company-common)
- (list 'face (if selected
- 'company-tooltip-common-selection
- 'company-tooltip-common)) line)
+ '(face company-tooltip-common
+ mouse-face company-tooltip-mouse)
+ line)
+ (when selected
+ (if (and company-search-string
+ (string-match (regexp-quote company-search-string) line
+ (length company-prefix)))
+ (progn
+ (add-text-properties (match-beginning 0) (match-end 0)
+ '(face company-tooltip-selection)
+ line)
+ (when (< (match-beginning 0) (length company-common))
+ (add-text-properties (match-beginning 0) (length company-common)
+ '(face company-tooltip-common-selection)
+ line)))
+ (add-text-properties 0 width '(face company-tooltip-selection
+ mouse-face company-tooltip-selection)
+ line)
+ (add-text-properties 0 (length company-common)
+ '(face company-tooltip-common-selection
+ mouse-face company-tooltip-selection)
+ line)))
line)
-(defun company-fill-propertize-lines (column lines selection)
- (let ((width 0)
- (lines-copy lines)
- (len (min company-tooltip-limit (length lines)))
- new)
- (dotimes (i len)
- (setq width (max (length (pop lines-copy)) width)))
- (setq width (min width (- (window-width) column)))
- (dotimes (i len)
- (push (company-fill-propertize (pop lines) width (equal i selection))
- new))
- (nreverse new)))
-
;;; replace
(defun company-buffer-lines (beg end)
(goto-char beg)
(let ((row (cdr (posn-col-row (posn-at-point))))
lines)
- (while (< (point) end)
- (move-to-window-line (incf row))
+ (while (and (equal (move-to-window-line (incf row)) row)
+ (<= (point) end))
(push (buffer-substring beg (min end (1- (point)))) lines)
(setq beg (point)))
+ (unless (eq beg end)
+ (push (buffer-substring beg end) lines))
(nreverse lines)))
-(defun company-modify-line (old new offset)
+(defsubst company-modify-line (old new offset)
(concat (company-safe-substring old 0 offset)
new
(company-safe-substring old (+ offset (length new)))))
-(defun company-modified-substring (beg end lines column nl)
- (let ((old (company-buffer-lines beg end))
- new)
+(defun company-replacement-string (old lines column nl)
+ (let (new)
;; Inject into old lines.
(while old
(push (company-modify-line (pop old) (pop lines) column) new))
;; Append whole new lines.
(while lines
- (push (company-modify-line "" (pop lines) column) new))
+ (push (concat (company-space-string column) (pop lines)) new))
(concat (when nl "\n")
(mapconcat 'identity (nreverse new) "\n")
"\n")))
-;; show
+(defun company-create-lines (column selection limit)
-(defun company-pseudo-tooltip-show (row column lines selection)
- (company-pseudo-tooltip-hide)
- (unless lines (error "No text provided"))
- (save-excursion
+ (let ((len company-candidates-length)
+ (numbered 99999)
+ lines
+ width
+ lines-copy
+ previous
+ remainder
+ new)
;; Scroll to offset.
- (let ((offset (company-offset company-tooltip-limit)))
- (setq lines (nthcdr offset lines))
- (decf selection offset))
+ (setq limit (company-pseudo-tooltip-update-offset selection len limit))
+
+ (when (> company-tooltip-offset 0)
+ (setq previous (format "...(%d)" company-tooltip-offset)))
+
+ (setq remainder (- len limit company-tooltip-offset)
+ remainder (when (> remainder 0)
+ (setq remainder (format "...(%d)" remainder))))
+
+ (decf selection company-tooltip-offset)
+ (setq width (min (length previous) (length remainder))
+ lines (nthcdr company-tooltip-offset company-candidates)
+ len (min limit len)
+ lines-copy lines)
+
+ (dotimes (i len)
+ (setq width (max (length (pop lines-copy)) width)))
+ (setq width (min width (- (window-width) column)))
+
+ (setq lines-copy lines)
+
+ ;; number can make tooltip too long
+ (and company-show-numbers
+ (< (setq numbered company-tooltip-offset) 10)
+ (incf width 2))
- (setq lines (company-fill-propertize-lines column lines selection))
+ (when previous
+ (push (propertize (company-safe-substring previous 0 width)
+ 'face 'company-tooltip)
+ new))
+ (dotimes (i len)
+ (push (company-fill-propertize
+ (if (>= numbered 10)
+ (company-reformat (pop lines))
+ (incf numbered)
+ (format "%s %d"
+ (company-safe-substring (company-reformat (pop lines))
+ 0 (- width 2))
+ (mod numbered 10)))
+ width (equal i selection))
+ new))
+
+ (when remainder
+ (push (propertize (company-safe-substring remainder 0 width)
+ 'face 'company-tooltip)
+ new))
+
+ (setq lines (nreverse new))))
+
+;; show
+
+(defsubst company-pseudo-tooltip-height ()
+ "Calculate the appropriate tooltip height."
+ (max 3 (min company-tooltip-limit
+ (- (window-height) 2
+ (count-lines (window-start) (point-at-bol))))))
+
+(defun company-pseudo-tooltip-show (row column selection)
+ (company-pseudo-tooltip-hide)
+ (save-excursion
(move-to-column 0)
- (let ((nl (< (move-to-window-line row) row))
- (beg (point))
- (end (save-excursion
- (move-to-window-line (min (window-height)
- (+ row company-tooltip-limit)))
- (point)))
- str)
+ (let* ((height (company-pseudo-tooltip-height))
+ (lines (company-create-lines column selection height))
+ (nl (< (move-to-window-line row) row))
+ (beg (point))
+ (end (save-excursion
+ (move-to-window-line (+ row height))
+ (point)))
+ (old-string
+ (mapcar 'company-untabify (company-buffer-lines beg end)))
+ str)
(setq company-pseudo-tooltip-overlay (make-overlay beg end))
- (overlay-put company-pseudo-tooltip-overlay 'before-string
- (company-modified-substring beg end lines column nl))
- (overlay-put company-pseudo-tooltip-overlay 'invisible t)
+ (overlay-put company-pseudo-tooltip-overlay 'company-old old-string)
+ (overlay-put company-pseudo-tooltip-overlay 'company-column column)
+ (overlay-put company-pseudo-tooltip-overlay 'company-nl nl)
+ (overlay-put company-pseudo-tooltip-overlay 'company-before
+ (company-replacement-string old-string lines column nl))
+ (overlay-put company-pseudo-tooltip-overlay 'company-height height)
+
(overlay-put company-pseudo-tooltip-overlay 'window (selected-window)))))
(defun company-pseudo-tooltip-show-at-point (pos)
(let ((col-row (posn-col-row (posn-at-point pos))))
- (company-pseudo-tooltip-show (1+ (cdr col-row)) (car col-row)
- company-candidates company-selection)))
+ (company-pseudo-tooltip-show (1+ (cdr col-row)) (car col-row) company-selection)))
+
+(defun company-pseudo-tooltip-edit (lines selection)
+ (let* ((old-string (overlay-get company-pseudo-tooltip-overlay 'company-old))
+ (column (overlay-get company-pseudo-tooltip-overlay 'company-column))
+ (nl (overlay-get company-pseudo-tooltip-overlay 'company-nl))
+ (height (overlay-get company-pseudo-tooltip-overlay 'company-height))
+ (lines (company-create-lines column selection height)))
+ (overlay-put company-pseudo-tooltip-overlay 'company-before
+ (company-replacement-string old-string lines column nl))))
(defun company-pseudo-tooltip-hide ()
(when company-pseudo-tooltip-overlay
(delete-overlay company-pseudo-tooltip-overlay)
(setq company-pseudo-tooltip-overlay nil)))
+(defun company-pseudo-tooltip-hide-temporarily ()
+ (when (overlayp company-pseudo-tooltip-overlay)
+ (overlay-put company-pseudo-tooltip-overlay 'invisible nil)
+ (overlay-put company-pseudo-tooltip-overlay 'before-string nil)))
+
+(defun company-pseudo-tooltip-unhide ()
+ (when company-pseudo-tooltip-overlay
+ (overlay-put company-pseudo-tooltip-overlay 'invisible t)
+ (overlay-put company-pseudo-tooltip-overlay 'before-string
+ (overlay-get company-pseudo-tooltip-overlay 'company-before))
+ (overlay-put company-pseudo-tooltip-overlay 'window (selected-window))))
+
(defun company-pseudo-tooltip-frontend (command)
+ "A `company-mode' front-end similar to a tool-tip but based on overlays."
(case command
- ('pre-command (company-pseudo-tooltip-hide))
- ('post-command (company-pseudo-tooltip-show-at-point
- (- (point) (length company-prefix))))
- ('hide (company-pseudo-tooltip-hide))))
+ ('pre-command (company-pseudo-tooltip-hide-temporarily))
+ ('post-command
+ (unless (and (overlayp company-pseudo-tooltip-overlay)
+ (equal (overlay-get company-pseudo-tooltip-overlay
+ 'company-height)
+ (company-pseudo-tooltip-height)))
+ ;; Redraw needed.
+ (company-pseudo-tooltip-show-at-point (- (point)
+ (length company-prefix))))
+ (company-pseudo-tooltip-unhide))
+ ('hide (company-pseudo-tooltip-hide)
+ (setq company-tooltip-offset 0))
+ ('update (when (overlayp company-pseudo-tooltip-overlay)
+ (company-pseudo-tooltip-edit company-candidates
+ company-selection)))))
(defun company-pseudo-tooltip-unless-just-one-frontend (command)
+ "`company-pseudo-tooltip-frontend', but not shown for single candidates."
(unless (and (eq command 'post-command)
(not (cdr company-candidates)))
(company-pseudo-tooltip-frontend command)))
(setq company-preview-overlay (make-overlay pos pos))
- (let ((completion (company-strip-prefix (nth company-selection
- company-candidates))))
+ (let ((completion(nth company-selection company-candidates)))
+ (setq completion (propertize completion 'face 'company-preview))
+ (add-text-properties 0 (length company-common)
+ '(face company-preview-common) completion)
+
+ ;; Add search string
+ (and company-search-string
+ (string-match (regexp-quote company-search-string) completion)
+ (add-text-properties (match-beginning 0)
+ (match-end 0)
+ '(face company-preview-search)
+ completion))
+
+ (setq completion (company-strip-prefix completion))
+
(and (equal pos (point))
(not (equal completion ""))
(add-text-properties 0 1 '(cursor t) completion))
- (setq completion (propertize completion 'face 'company-preview))
- (add-text-properties 0 (- (length company-common) (length company-prefix))
- '(face company-preview-common) completion)
-
(overlay-put company-preview-overlay 'after-string completion)
(overlay-put company-preview-overlay 'window (selected-window))))
(setq company-preview-overlay nil)))
(defun company-preview-frontend (command)
+ "A `company-mode' front-end showing the selection as if it had been inserted."
(case command
('pre-command (company-preview-hide))
('post-command (company-preview-show-at-point (point)))
('hide (company-preview-hide))))
(defun company-preview-if-just-one-frontend (command)
+ "`company-preview-frontend', but only shown for single candidates."
(unless (and (eq command 'post-command)
(cdr company-candidates))
(company-preview-frontend command)))
(defvar company-echo-last-msg nil)
(make-variable-buffer-local 'company-echo-last-msg)
-(defun company-echo-refresh ()
+(defvar company-echo-timer nil)
+
+(defvar company-echo-delay .1)
+
+(defun company-echo-show (&optional getter)
+ (when getter
+ (setq company-echo-last-msg (funcall getter)))
(let ((message-log-max nil))
(if company-echo-last-msg
(message "%s" company-echo-last-msg)
(message ""))))
-(defun company-echo-show (candidates)
+(defsubst company-echo-show-soon (&optional getter)
+ (when company-echo-timer
+ (cancel-timer company-echo-timer))
+ (setq company-echo-timer (run-with-timer company-echo-delay nil
+ 'company-echo-show getter)))
- ;; Roll to selection.
- (setq candidates (nthcdr company-selection candidates))
+(defun company-echo-format ()
(let ((limit (window-width (minibuffer-window)))
(len -1)
+ ;; Roll to selection.
+ (candidates (nthcdr company-selection company-candidates))
+ (i (if company-show-numbers company-selection 99999))
comp msg)
+
(while candidates
- (setq comp (pop candidates)
+ (setq comp (company-reformat (pop candidates))
len (+ len 1 (length comp)))
- (if (>= len limit)
- (setq candidates nil)
+ (if (< i 10)
+ ;; Add number.
+ (progn
+ (setq comp (propertize (format "%d: %s" i comp)
+ 'face 'company-echo))
+ (incf len 3)
+ (incf i)
+ (add-text-properties 3 (+ 3 (length company-common))
+ '(face company-echo-common) comp))
(setq comp (propertize comp 'face 'company-echo))
(add-text-properties 0 (length company-common)
- '(face company-echo-common) comp)
+ '(face company-echo-common) comp))
+ (if (>= len limit)
+ (setq candidates nil)
(push comp msg)))
- (setq company-echo-last-msg (mapconcat 'identity (nreverse msg) " "))
- (company-echo-refresh)))
+ (mapconcat 'identity (nreverse msg) " ")))
+
+(defun company-echo-strip-common-format ()
+
+ (let ((limit (window-width (minibuffer-window)))
+ (len (+ (length company-prefix) 2))
+ ;; Roll to selection.
+ (candidates (nthcdr company-selection company-candidates))
+ (i (if company-show-numbers company-selection 99999))
+ msg comp)
+
+ (while candidates
+ (setq comp (company-strip-prefix (pop candidates))
+ len (+ len 2 (length comp)))
+ (when (< i 10)
+ ;; Add number.
+ (setq comp (format "%s (%d)" comp i))
+ (incf len 4)
+ (incf i))
+ (if (>= len limit)
+ (setq candidates nil)
+ (push (propertize comp 'face 'company-echo) msg)))
+
+ (concat (propertize company-prefix 'face 'company-echo-common) "{"
+ (mapconcat 'identity (nreverse msg) ", ")
+ "}")))
+
+(defun company-echo-hide ()
+ (when company-echo-timer
+ (cancel-timer company-echo-timer))
+ (unless (equal company-echo-last-msg "")
+ (setq company-echo-last-msg "")
+ (company-echo-show)))
(defun company-echo-frontend (command)
+ "A `company-mode' front-end showing the candidates in the echo area."
+ (case command
+ ('pre-command (company-echo-show-soon))
+ ('post-command (company-echo-show-soon 'company-echo-format))
+ ('hide (company-echo-hide))))
+
+(defun company-echo-strip-common-frontend (command)
+ "A `company-mode' front-end showing the candidates in the echo area."
+ (case command
+ ('pre-command (company-echo-show-soon))
+ ('post-command (company-echo-show-soon 'company-echo-strip-common-format))
+ ('hide (company-echo-hide))))
+
+(defun company-echo-metadata-frontend (command)
+ "A `company-mode' front-end showing the documentation in the echo area."
(case command
- ('pre-command (company-echo-refresh))
- ('post-command (company-echo-show company-candidates))
- ('hide (setq company-echo-last-msg nil))))
+ ('pre-command (company-echo-show-soon))
+ ('post-command (company-echo-show-soon 'company-fetch-metadata))
+ ('hide (company-echo-hide))))
(provide 'company)
;;; company.el ends here