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|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Emmet minor mode
(defgroup emmet nil
"Customization group for emmet-mode."
:group 'convenience)
(defun emmet-expr-on-line ()
"Extract a emmet expression and the corresponding bounds
for the current line."
(let* ((end (point))
(start (emmet-find-left-bound))
(line (buffer-substring-no-properties start end))
(expr (emmet-regex "\\([ \t]*\\)\\([^\n]+\\)" line 2)))
(if (first expr)
(list (first expr) start end))))
(defun emmet-find-left-bound ()
"Find the left bound of an emmet expr"
(save-excursion (save-match-data
(let ((char (char-before))
(in-style-attr (looking-back "style=[\"'][^\"']*"))
(syn-tab (make-syntax-table)))
(modify-syntax-entry ?\\ "\\")
(while char
(cond ((and in-style-attr (member char '(?\" ?\')))
(setq char nil))
((member char '(?\} ?\] ?\)))
(with-syntax-table syn-tab
(backward-sexp) (setq char (char-before))))
((eq char ?\>)
(if (looking-back "<[^>]+>" (line-beginning-position))
(setq char nil)
(progn (backward-char) (setq char (char-before)))))
((not (string-match-p "[[:space:]\n;]" (string char)))
(backward-char) (setq char (char-before)))
(t
(setq char nil))))
(point)))))
(defcustom emmet-indentation 4
"Number of spaces used for indentation."
:type '(number :tag "Spaces")
:group 'emmet)
(defcustom emmet-indent-after-insert t
"Indent region after insert?"
:type 'boolean
:group 'emmet)
(defcustom emmet-use-style-tag-and-attr-detection t
"When true, enables detection of style tags and attributes in HTML
to provide proper CSS abbreviations completion."
:type 'boolean
:group 'emmet)
(defvar emmet-use-css-transform nil
"When true, transform Emmet snippets into CSS, instead of the usual HTML.")
(make-variable-buffer-local 'emmet-use-css-transform)
(defvar emmet-use-sass-syntax nil
"When true, uses Sass syntax for CSS abbreviations expanding,
e. g. without semicolons")
(make-variable-buffer-local 'emmet-use-sass-syntax)
(defvar emmet-css-major-modes
'(css-mode
scss-mode
sass-mode
less-mode
less-css-mode)
"Major modes that use emmet for CSS, rather than HTML.")
(defun emmet-transform (input)
(if (or (emmet-detect-style-tag-and-attr) emmet-use-css-transform)
(emmet-css-transform input)
(emmet-html-transform input)))
(defun emmet-detect-style-tag-and-attr ()
(let* ((style-attr-end "[^=][\"']")
(style-attr-begin "style=[\"']")
(style-tag-end "</style>")
(style-tag-begin "<style>"))
(and emmet-use-style-tag-and-attr-detection
(or
(emmet-check-if-between style-attr-begin style-attr-end) ; style attr
(emmet-check-if-between style-tag-begin style-tag-end))))) ; style tag
(defun emmet-check-if-between (begin end)
(let ((begin-back (emmet-find "backward" begin))
(end-back (emmet-find "backward" end))
(begin-front (emmet-find "forward" begin))
(end-front (emmet-find "forward" end)))
(and begin-back end-front
(or (not end-back) (> begin-back end-back))
(or (not begin-front) (< end-front begin-front)))))
(defcustom emmet-preview-default nil
"If non-nil then preview is the default action.
This determines how `emmet-expand-line' works by default."
:type 'boolean
:group 'emmet)
;;;###autoload
(defun emmet-expand-line (arg)
"Replace the current line's emmet expression with the corresponding expansion.
If prefix ARG is given or region is visible call `emmet-preview' to start an
interactive preview.
Otherwise expand line directly.
For more information see `emmet-mode'."
(interactive "P")
(let* ((here (point))
(preview (if emmet-preview-default (not arg) arg))
(beg (if preview
(emmet-find-left-bound)
(when (use-region-p) (region-beginning))))
(end (if preview
here
(when (use-region-p) (region-end)))))
(if (and preview beg)
(progn
(goto-char here)
(emmet-preview beg end))
(let ((expr (emmet-expr-on-line)))
(if expr
(let ((markup (emmet-transform (first expr))))
(when markup
(delete-region (second expr) (third expr))
(emmet-insert-and-flash markup)
(emmet-reposition-cursor expr))))))))
(defvar emmet-mode-keymap
(let
((map (make-sparse-keymap)))
(define-key map (kbd "C-j") 'emmet-expand-line)
(define-key map (kbd "<C-return>") 'emmet-expand-line)
(define-key map (kbd "<C-M-right>") 'emmet-next-edit-point)
(define-key map (kbd "<C-M-left>") 'emmet-prev-edit-point)
(define-key map (kbd "C-c w") 'emmet-wrap-with-markup)
map)
"Keymap for emmet minor mode.")
(defun emmet-after-hook ()
"Initialize Emmet's buffer-local variables."
(if (memq major-mode emmet-css-major-modes)
(setq emmet-use-css-transform t))
(if (eq major-mode 'sass-mode)
(setq emmet-use-sass-syntax t)))
;;;###autoload
(define-minor-mode emmet-mode
"Minor mode for writing HTML and CSS markup.
With emmet for HTML and CSS you can write a line like
ul#name>li.item*2
and have it expanded to
<ul id=\"name\">
<li class=\"item\"></li>
<li class=\"item\"></li>
</ul>
This minor mode defines keys for quick access:
\\{emmet-mode-keymap}
Home page URL `http://www.emacswiki.org/emacs/Emmet'.
See also `emmet-expand-line'."
:lighter " Emmet"
:keymap emmet-mode-keymap
:after-hook (emmet-after-hook))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Emmet yasnippet integration
(defun emmet-transform-yas (input)
(let* ((leaf-count 0)
(emmet-leaf-function
(lambda ()
(format "$%d" (incf leaf-count)))))
(emmet-transform input)))
;;;###autoload
(defun emmet-expand-yas ()
(interactive)
(let ((expr (emmet-expr-on-line)))
(if expr
(let* ((markup (emmet-transform-yas (first expr)))
(filled (replace-regexp-in-string "><" ">\n<" markup)))
(delete-region (second expr) (third expr))
(insert filled)
(indent-region (second expr) (point))
(if (fboundp 'yas/expand-snippet)
(yas/expand-snippet
(buffer-substring (second expr) (point))
(second expr) (point)))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Real-time preview
;;
;;;;;;;;;;
;; Lennart's version
(defvar emmet-preview-input nil)
(make-local-variable 'emmet-preview-input)
(defvar emmet-preview-output nil)
(make-local-variable 'emmet-preview-output)
(defvar emmet-old-show-paren nil)
(make-local-variable 'emmet-old-show-paren)
(defface emmet-preview-input
'((default :box t :inherit secondary-selection))
"Face for preview input field."
:group 'emmet)
(defface emmet-preview-output
'((default :inherit highlight))
"Face for preview output field."
:group 'emmet)
(defvar emmet-preview-keymap
(let ((map (make-sparse-keymap)))
(define-key map (kbd "RET") 'emmet-preview-accept)
(define-key map (kbd "<return>") 'emmet-preview-accept)
(define-key map [(control ?g)] 'emmet-preview-abort)
map))
(defun emmet-html-text-p (markup)
(string-match "^[\s|\t|\n|\r]*<.*$" markup))
(defun emmet-preview-accept ()
(interactive)
(let ((ovli emmet-preview-input)
(expr (emmet-expr-on-line)))
(if (not (and (overlayp ovli)
(bufferp (overlay-buffer ovli))))
(message "Preview is not active")
(let* ((indent (current-indentation))
(markup (emmet-preview-transformed indent)))
(when markup
(delete-region (overlay-start ovli) (overlay-end ovli))
(emmet-insert-and-flash markup)
(emmet-reposition-cursor expr)))))
(emmet-preview-abort))
(defun emmet-html-next-insert-point (str)
(with-temp-buffer
(insert str)
(goto-char (point-min))
(or
(emmet-aif (emmet-go-to-edit-point 1 t) (- it 1)) ; try to find an edit point
(emmet-aif (re-search-forward ".+</" nil t) (- it 3)) ; try to place cursor after tag contents
(length str)))) ; ok, just go to the end
(defun emmet-css-next-insert-point (str)
(let ((regexp (if emmet-use-sass-syntax ": *\\($\\)" ": *\\(;\\)$")))
(save-match-data
(set-match-data nil t)
(string-match regexp str)
(or (match-beginning 1) (length str)))))
(defvar emmet-flash-ovl nil)
(make-variable-buffer-local 'emmet-flash-ovl)
(defun emmet-remove-flash-ovl (buf)
(with-current-buffer buf
(when (overlayp emmet-flash-ovl)
(delete-overlay emmet-flash-ovl))
(setq emmet-flash-ovl nil)))
(defcustom emmet-insert-flash-time 0.5
"Time to flash insertion.
Set this to a negative number if you do not want flashing the
expansion after insertion."
:type '(number :tag "Seconds")
:group 'emmet)
(defcustom emmet-move-cursor-after-expanding t
"If non-nil the the cursor position is
moved to before the first closing tag when the exp was expanded."
:type 'boolean
:group 'emmet)
(defcustom emmet-move-cursor-between-quotes nil
"If emmet-move-cursor-after-expands is non-nil and this is non-nil then
cursor position will be moved to after the first quote."
:type 'boolean
:group 'emmet)
(defun emmet-reposition-cursor (expr)
(let ((output-markup (buffer-substring-no-properties (second expr) (point))))
(when emmet-move-cursor-after-expanding
(let ((p (point))
(new-pos (if (emmet-html-text-p output-markup)
(emmet-html-next-insert-point output-markup)
(emmet-css-next-insert-point output-markup))))
(goto-char
(+ (- p (length output-markup))
new-pos))))))
(defun emmet-insert-and-flash (markup)
(emmet-remove-flash-ovl (current-buffer))
(let ((here (point)))
(insert markup)
(when emmet-indent-after-insert
(indent-region here (point))
(setq here
(save-excursion
(goto-char here)
(skip-chars-forward "[:space:]")
(point))))
(setq emmet-flash-ovl (make-overlay here (point)))
(overlay-put emmet-flash-ovl 'face 'emmet-preview-output)
(when (< 0 emmet-insert-flash-time)
(run-with-idle-timer emmet-insert-flash-time
nil 'emmet-remove-flash-ovl (current-buffer)))))
;;;###autoload
(defun emmet-preview (beg end)
"Expand emmet between BEG and END interactively.
This will show a preview of the expanded emmet code and you can
accept it or skip it."
(interactive (if (use-region-p)
(list (region-beginning) (region-end))
(list nil nil)))
(emmet-preview-abort)
(if (not beg)
(message "Region not active")
(setq emmet-old-show-paren show-paren-mode)
(show-paren-mode -1)
(let ((here (point)))
(goto-char beg)
(forward-line 1)
(unless (= 0 (current-column))
(insert "\n"))
(let* ((opos (point))
(ovli (make-overlay beg end nil nil t))
(ovlo (make-overlay opos opos))
(info (propertize " Emmet preview. Choose with RET. Cancel by stepping out. \n"
'face 'tooltip)))
(overlay-put ovli 'face 'emmet-preview-input)
(overlay-put ovli 'keymap emmet-preview-keymap)
(overlay-put ovlo 'face 'emmet-preview-output)
(overlay-put ovlo 'before-string info)
(setq emmet-preview-input ovli)
(setq emmet-preview-output ovlo)
(add-hook 'before-change-functions 'emmet-preview-before-change t t)
(goto-char here)
(add-hook 'post-command-hook 'emmet-preview-post-command t t)))))
(defvar emmet-preview-pending-abort nil)
(make-variable-buffer-local 'emmet-preview-pending-abort)
(defun emmet-preview-before-change (beg end)
(when
(or (> beg (overlay-end emmet-preview-input))
(< beg (overlay-start emmet-preview-input))
(> end (overlay-end emmet-preview-input))
(< end (overlay-start emmet-preview-input)))
(setq emmet-preview-pending-abort t)))
(defun emmet-preview-abort ()
"Abort emmet code preview."
(interactive)
(setq emmet-preview-pending-abort nil)
(remove-hook 'before-change-functions 'emmet-preview-before-change t)
(when (overlayp emmet-preview-input)
(delete-overlay emmet-preview-input))
(setq emmet-preview-input nil)
(when (overlayp emmet-preview-output)
(delete-overlay emmet-preview-output))
(setq emmet-preview-output nil)
(remove-hook 'post-command-hook 'emmet-preview-post-command t)
(when emmet-old-show-paren (show-paren-mode 1)))
(defun emmet-preview-post-command ()
(condition-case err
(emmet-preview-post-command-1)
(error (message "emmet-preview-post: %s" err))))
(defun emmet-preview-post-command-1 ()
(if (and (not emmet-preview-pending-abort)
(<= (point) (overlay-end emmet-preview-input))
(>= (point) (overlay-start emmet-preview-input)))
(emmet-update-preview (current-indentation))
(emmet-preview-abort)))
(defun emmet-preview-transformed (indent)
(let* ((string (buffer-substring-no-properties
(overlay-start emmet-preview-input)
(overlay-end emmet-preview-input))))
(let ((output (emmet-transform string)))
(when output
output))))
(defun emmet-update-preview (indent)
(let* ((pretty (emmet-preview-transformed indent))
(show (when pretty
(propertize pretty 'face 'highlight))))
(when show
(overlay-put emmet-preview-output 'after-string
(concat show "\n")))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Implementation of "Go to Edit Point" functionality ;;
;; http://docs.emmet.io/actions/go-to-edit-point/ ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun emmet-go-to-edit-point (count &optional only-before-closed-tag)
(let*
((between-tags
(if only-before-closed-tag "\\(><\\)/" "\\(><\\)"))
(indented-line "\\(^[[:blank:]]+$\\)")
(between-quotes
(if emmet-move-cursor-between-quotes "\\(=\\(\"\\|'\\)\\{2\\}\\)" nil))
(whole-regex
(mapconcat 'identity
(delq nil
(list between-tags indented-line between-quotes))
"\\|"))
(edit-point (format "\\(%s\\)" whole-regex)))
(if (> count 0)
(progn
(forward-char)
(let
((search-result (re-search-forward edit-point nil t count)))
(if search-result
(progn
(cond
((match-string 2) (goto-char (- (match-end 2) 1)))
((match-string 3) (end-of-line))
((match-string 4) (backward-char)))
(point))
(backward-char))))
(progn
(backward-char)
(let
((search-result (re-search-backward edit-point nil t (- count))))
(if search-result
(progn
(cond
((match-string 2) (goto-char (- (match-end 2) 1)))
((match-string 3) (end-of-line))
((match-string 4) (forward-char 2)))
(point))
(forward-char)))))))
;;;###autoload
(defun emmet-wrap-with-markup (wrap-with)
"Wrap region with markup."
(interactive "sExpression to wrap with: ")
(let* ((to-wrap (buffer-substring-no-properties (region-beginning) (region-end)))
(expr (concat wrap-with ">{!EMMET-TO-WRAP-REPLACEMENT!}"))
(markup (replace-regexp-in-string
"!EMMET-TO-WRAP-REPLACEMENT!" to-wrap
(emmet-transform expr)
t t)))
(when markup
(delete-region (region-beginning) (region-end))
(insert markup)
(indent-region (region-beginning) (region-end))
(let ((end (region-end)))
(goto-char (region-beginning))
(unless (ignore-errors (progn (emmet-next-edit-point 1) t))
(goto-char end)))
)))
;;;###autoload
(defun emmet-next-edit-point (count)
(interactive "^p")
(unless (or emmet-use-css-transform (emmet-go-to-edit-point count))
(error "Last edit point reached.")))
;;;###autoload
(defun emmet-prev-edit-point (count)
(interactive "^p")
(unless (or emmet-use-css-transform (emmet-go-to-edit-point (- count)))
(error "First edit point reached.")))
(provide 'emmet-mode)
|
