emacs.d/elpa/ein-20191129.337/ein-cell-edit.el
2019-11-30 08:46:49 +01:00

275 lines
11 KiB
EmacsLisp

;;; ein-cell-edit.el --- Notebook cell editing
;; Copyright (C) 2016 John M. Miller
;; Author: John Miller <millejoh at mac.com>
;; This file is NOT part of GNU Emacs.
;; ein-cell-edit.el 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.
;; ein-cell-edit.el 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 ein-worksheet.el. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This code inspired by borrowing from org-src.el.
;;; Code:
(require 'ein-cell)
(autoload 'julia-mode "julia-mode")
(autoload 'markdown-mode "markdown-mode")
(autoload 'R-mode "ess-r-mode")
(autoload 'org-src--remove-overlay "org-src")
(autoload 'org-src-switch-to-buffer "org-src")
(defvar ein:src--cell nil)
(defvar ein:src--ws nil)
(defvar ein:src--allow-write-back t)
(defvar ein:src--overlay nil)
(defvar ein:src--saved-window-config nil)
(declare-function ein:notebook--get-nb-or-error "ein-notebook" ())
(defvar ein:edit-cell-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "\C-c'" 'ein:edit-cell-exit)
(define-key map "\C-c\C-k" 'ein:edit-cell-abort)
(define-key map "\C-c\C-c" 'ein:edit-cell-save-and-execute)
(define-key map "\C-x\C-s" 'ein:edit-cell-save)
(define-key map "\C-c\C-x" 'ein:edit-cell-view-traceback)
map))
(define-minor-mode ein:edit-cell-mode
"Minor mode for language major mode buffers generated by EIN.
This minor mode is turned on when editing a source code snippet with \\[ein:edit-cell-contents]
\\{ein:edit-cell-mode-map}
."
nil " EinCell" nil
(set (make-local-variable 'header-line-format)
(substitute-command-keys
"Edit, execute with \\[ein:edit-cell-execute] then exit with \\[ein:edit-cell-exit] \
or abort with \\[ein:edit-cell-abort]"))
;; Possibly activate various auto-save features (for the edit buffer
;; or the source buffer).
;; (when org-edit-src-turn-on-auto-save
;; (setq buffer-auto-save-file-name
;; (concat (make-temp-name "org-src-")
;; (format-time-string "-%Y-%d-%m")
;; ".txt")))
;; (unless (or org-src--auto-save-timer (zerop org-edit-src-auto-save-idle-delay))
;; (setq org-src--auto-save-timer
;; (run-with-idle-timer
;; org-edit-src-auto-save-idle-delay t
;; (lambda ()
;; (save-excursion
;; (let (edit-flag)
;; (dolist (b (buffer-list))
;; (with-current-buffer b
;; (when (org-src-edit-buffer-p)
;; (unless edit-flag (setq edit-flag t))
;; (when (buffer-modified-p) (org-edit-src-save)))))
;; (unless edit-flag
;; (cancel-timer org-src--auto-save-timer)
;; (setq org-src--auto-save-timer nil))))))))
)
(defun ein:cell-configure-edit-buffer ()
(when (and (bound-and-true-p org-src--from-org-mode) (boundp 'org-src--beg-marker))
(add-hook 'kill-buffer-hook #'org-src--remove-overlay nil 'local)
(if (bound-and-true-p org-src--allow-write-back)
(progn
(setq buffer-offer-save t)
(setq buffer-file-name
(concat (buffer-file-name (marker-buffer org-src--beg-marker))
"[" (buffer-name) "]"))
(setq write-contents-functions '(ein:edit-cell-save)))
(setq buffer-read-only t))))
(defun ein:edit-cell-view-traceback ()
"Jump to traceback, if there is one, for current edit."
(interactive)
(let ((buf (current-buffer))
(cell ein:src--cell))
(with-current-buffer (ein:worksheet--get-buffer ein:src--ws)
(ein:cell-goto cell)
(ein:tb-show))))
(defun ein:edit-cell-save-and-execute ()
"Save, then execute the countents of the EIN source edit buffer
and place results (if any) in output of original notebook cell."
(interactive)
(ein:edit-cell-save)
(when (and (slot-exists-p ein:src--cell 'kernel)
(slot-boundp ein:src--cell 'kernel))
(ein:cell-execute-internal ein:src--cell
(slot-value ein:src--cell 'kernel)
(buffer-string)
:silent nil)))
(defun ein:edit-cell-save ()
"Save contents of EIN source edit buffer back to original notebook
cell."
(interactive)
(set-buffer-modified-p nil)
(let* ((edited-code (buffer-string))
(cell ein:src--cell)
(overlay ein:src--overlay)
(read-only (overlay-get overlay 'modification-hooks)))
(overlay-put overlay 'modification-hooks nil)
(overlay-put overlay 'insert-in-front-hooks nil)
(overlay-put overlay 'insert-behind-hooks nil)
(with-current-buffer (ein:worksheet--get-buffer ein:src--ws)
(ein:cell-set-text cell edited-code))
;;(setf (slot-value ein:src--cell 'input) edited-code)
(overlay-put overlay 'modification-hooks read-only)
(overlay-put overlay 'insert-in-front-hooks read-only)
(overlay-put overlay 'insert-behind-hooks read-only)))
(defun ein:edit-cell-exit ()
"Close the EIN source edit buffer, saving contents back to the
original notebook cell, unless being called via
`ein:edit-cell-abort'."
(interactive)
(let ((edit-buffer (current-buffer))
(ws ein:src--ws)
(cell ein:src--cell))
(ein:remove-overlay)
(when ein:src--allow-write-back
(ein:edit-cell-save))
(kill-buffer edit-buffer)
(switch-to-buffer-other-window (ein:worksheet--get-buffer ws))
(ein:cell-goto cell)
(when ein:src--saved-window-config
(set-window-configuration ein:src--saved-window-config)
(setq ein:src--saved-window-config nil))))
(defun ein:edit-cell-abort ()
"Abort editing the current cell, contents will revert to
previous value."
(interactive)
(let (ein:src--allow-write-back) (ein:edit-cell-exit)))
(defun ein:construct-cell-edit-buffer-name (bufname cid cell-type)
(concat "*EIN Src " bufname "[ " cid "/" cell-type " ]*" ))
(defun ein:get-mode-for-kernel (kernelspec)
(if (null kernelspec)
'python ;; FIXME
(ein:case-equal (ein:$kernelspec-language kernelspec)
(("julia" "python" "R") (intern (ein:$kernelspec-language kernelspec)))
(t 'python))))
(defun ein:edit-src-continue (e)
(interactive "e")
(mouse-set-point e)
(let ((buf (get-char-property (point) 'edit-buffer)))
(if buf (org-src-switch-to-buffer buf 'continue)
(user-error "No sub-editing buffer for area at point"))))
(defun ein:make-source-overlay (beg end edit-buffer)
"Create overlay between BEG and END positions and return it.
EDIT-BUFFER is the buffer currently editing area between BEG and
END."
(let ((overlay (make-overlay beg end)))
(overlay-put overlay 'face 'secondary-selection)
(overlay-put overlay 'edit-buffer edit-buffer)
(overlay-put overlay 'help-echo
"Click with mouse-1 to switch to buffer editing this segment")
(overlay-put overlay 'face 'secondary-selection)
(overlay-put overlay 'keymap
(let ((map (make-sparse-keymap)))
(define-key map [mouse-1] 'ein:edit-src-continue)
map))
(let ((read-only
(list
(lambda (&rest _)
(user-error
"Cannot modify an area being edited in a dedicated buffer")))))
(overlay-put overlay 'modification-hooks read-only)
(overlay-put overlay 'insert-in-front-hooks read-only)
(overlay-put overlay 'insert-behind-hooks read-only))
overlay))
(defun ein:remove-overlay ()
"Remove overlay from current source buffer."
(when (overlayp ein:src--overlay) (delete-overlay ein:src--overlay)))
(defcustom ein:raw-cell-default-edit-mode 'LaTeX-mode
"The major mode to use when editing a cell of type 'Raw' in the
dedicated edit buffer. By default we use LaTeX-mode."
:type 'symbol
:group 'ein)
(defun ein:edit-cell-contents ()
"Edit the contents of the current cell in a buffer using an
appropriate language major mode. Functionality is very similar to
`org-edit-special'."
(interactive)
(setq ein:src--saved-window-config (current-window-configuration))
(let* ((cell (or (ein:worksheet-get-current-cell)
(error "Must be called from inside an EIN worksheet cell.")))
(nb (ein:notebook--get-nb-or-error))
(ws (ein:worksheet--get-ws-or-error))
(type (slot-value cell 'cell-type))
(name (ein:construct-cell-edit-buffer-name (buffer-name) (ein:cell-id cell) type)))
(ein:aif (get-buffer name)
(switch-to-buffer-other-window it)
(ein:create-edit-cell-buffer name cell nb ws))))
(defun ein:edit-cell-detect-type (contents notebook &optional raw-cell-p)
(if (string-match "^%%\\(.*\\)" contents)
(ein:case-equal (match-string 1 contents)
(("html" "HTML") (html-mode))
(("latex" "LATEX") (LaTeX-mode))
(("ruby") (ruby-mode))
(("sh" "bash") (sh-mode))
(("javascript" "js") (javascript-mode))
(t (funcall ein:raw-cell-default-edit-mode)))
(if raw-cell-p
(funcall ein:raw-cell-default-edit-mode)
(cl-case (ein:get-mode-for-kernel (ein:$notebook-kernelspec notebook))
(julia (julia-mode))
(python (python-mode))
(R (R-mode))))))
(defun ein:create-edit-cell-buffer (name cell notebook worksheet)
(let* ((contents (ein:cell-get-text cell))
(type (slot-value cell 'cell-type))
(buffer (generate-new-buffer-name name))
(overlay (ein:make-source-overlay (ein:cell-input-pos-min cell)
(ein:cell-input-pos-max cell)
buffer)))
(switch-to-buffer-other-window buffer)
(insert contents)
(remove-text-properties (point-min) (point-max)
'(display nil invisible nil intangible nil))
(set-buffer-modified-p nil)
(setq buffer-file-name buffer) ;; Breaks anaconda-mode without this special fix.
(condition-case e
(ein:case-equal type
(("markdown") (markdown-mode))
(("raw") (ein:edit-cell-detect-type contents notebook t))
(("code") (ein:edit-cell-detect-type contents notebook)))
(error (message "Language mode `%s' fails with: %S"
type (nth 1 e))))
(set (make-local-variable 'ein:src--overlay) overlay)
(set (make-local-variable 'ein:src--cell) cell)
(set (make-local-variable 'ein:src--ws) worksheet)
(set (make-local-variable 'ein:src--allow-write-back) t)
(ein:edit-cell-mode)))
(provide 'ein-cell-edit)