org-mode/org-babel/org-babel-ui.el

70 lines
2.6 KiB
EmacsLisp

;;; org-babel-ui.el --- UI elements for org-babel
;; Copyright (C) 2009 Eric Schulte, Dan Davison, Austin F. Frank
;; Author: Eric Schulte, Dan Davison, Austin F. Frank
;; Keywords: literate programming, reproducible research
;; Homepage: http://orgmode.org
;; Version: 0.01
;;; License:
;; 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, 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; UI elements of org-babel
;; - code folding
;; - marking working code blocks
;;; Code:
(require 'org-babel)
(defun org-babel-ui-src-block-cycle-maybe ()
"Detect if this is context for a org-babel src-block and if so
then run `org-babel-execute-src-block'."
(let ((case-fold-search t))
(if (save-excursion
(beginning-of-line 1)
(looking-at org-babel-src-block-regexp))
(progn (call-interactively 'org-babel-ui-src-block-cycle)
t) ;; to signal that we took action
nil))) ;; to signal that we did not
(defun org-babel-ui-src-block-cycle ()
"Cycle the visibility of the current source code block"
(interactive)
;; should really do this once in an (org-mode hook)
(add-to-invisibility-spec '(org-babel-ui . t))
(message "trying out source block")
(save-excursion
(beginning-of-line)
(if (re-search-forward org-babel-src-block-regexp nil t)
(let ((start (- (match-beginning 4) 1)) ;; beginning of body
(end (match-end 0))) ;; end of entire body
(if (memq t (mapcar (lambda (overlay)
(eq (overlay-get overlay 'invisible) 'org-babel-ui))
(overlays-at start)))
(remove-overlays start end 'invisible 'org-babel-ui)
(overlay-put (make-overlay start end) 'invisible 'org-babel-ui)))
(error "not looking at a source block"))))
;; org-tab-after-check-for-cycling-hook
(add-hook 'org-tab-first-hook 'org-babel-ui-src-block-cycle-maybe)
(provide 'org-babel-ui)
;;; org-babel-ui ends here