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When indenting a region, first check if there is any item to move.

This commit is contained in:
Nicolas Goaziou 2010-08-23 11:24:57 +02:00
parent 668e5832c2
commit 7e6778c16f
1 changed files with 74 additions and 74 deletions
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148
lisp/org-list.el
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@ -690,88 +690,88 @@ function ends."
When number ARG is a negative, item will be outdented, otherwise
it will be indented.
If a region is active and its first line is an item beginning,
all items inside will be moved.
If a region is active, all items inside will be moved.
If NO-SUBTREE is non-nil, only indent the item itself, not its
children.
Return t if successful."
(save-restriction
(unless (or (org-at-item-p)
(and (org-region-active-p)
(goto-char (region-beginning))
(org-at-item-p)))
(error "Not on an item"))
;; Are we going to move the whole list?
(let ((specialp (and (cdr (assq 'indent org-list-automatic-rules))
(not no-subtree)
(= (org-list-top-point) (point-at-bol)))))
;; Determine begin and end points of zone to indent. If moving by
;; subtrees, ensure we don't drag additional items on subsequent
;; moves.
(unless (and (memq last-command '(org-shiftmetaright org-shiftmetaleft))
(memq this-command '(org-shiftmetaright org-shiftmetaleft)))
(if (org-region-active-p)
(progn
(set-marker org-last-indent-begin-marker (region-beginning))
(set-marker org-last-indent-end-marker (region-end)))
(set-marker org-last-indent-begin-marker (point-at-bol))
(set-marker org-last-indent-end-marker
(save-excursion
(cond
(specialp
(org-list-bottom-point))
(no-subtree
(org-end-of-item-or-at-child))
(t (org-end-of-item)))))))
;; Get everything ready
(let* ((beg (marker-position org-last-indent-begin-marker))
(end (marker-position org-last-indent-end-marker))
(struct (progn
(when specialp (narrow-to-region beg end))
(org-list-struct beg end (< arg 0))))
(origins (org-list-struct-origins struct))
(beg-item (assq beg struct)))
(let* ((regionp (org-region-active-p))
(rbeg (and regionp (region-beginning)))
(rend (and regionp (region-end))))
(cond
;; Special case: moving top-item with indent rule
(specialp
(let* ((level-skip (org-level-increment))
(offset (if (< arg 0) (- level-skip) level-skip))
(top-ind (nth 1 beg-item)))
(if (< (+ top-ind offset) 0)
(error "Cannot outdent beyond margin")
;; Change bullet if necessary
(when (and (= (+ top-ind offset) 0)
(string-match "*" (nth 2 beg-item)))
(setcdr beg-item (list (nth 1 beg-item)
(org-list-bullet-string "-"))))
;; Shift ancestor
(let ((anc (car struct)))
(setcdr anc (list (+ (nth 1 anc) offset) "" nil)))
(org-list-struct-fix-struct struct origins)
(org-list-struct-apply-struct struct))))
;; Forbidden move
((and (< arg 0)
(or (and no-subtree
(not (org-region-active-p))
(org-list-struct-get-child beg-item struct))
(let ((last-item (save-excursion
(goto-char end)
(skip-chars-backward " \r\t\n")
(org-beginning-of-item)
(org-list-struct-assoc-at-point))))
(org-list-struct-get-child last-item struct))))
(error "Cannot outdent an item without its children"))
;; Normal shifting
((and regionp
(goto-char rbeg)
(not (org-search-forward-unenclosed org-item-beginning-re rend t)))
(error "No item in region"))
((not (org-at-item-p))
(error "Not on an item"))
(t
(let* ((shifted-ori (if (< arg 0)
(org-list-struct-outdent beg end origins)
(org-list-struct-indent beg end origins struct))))
(org-list-struct-fix-struct struct shifted-ori)
(org-list-struct-apply-struct struct)))))))
;; Return value
t)
;; Are we going to move the whole list?
(let ((specialp (and (cdr (assq 'indent org-list-automatic-rules))
(not no-subtree)
(= (org-list-top-point) (point-at-bol)))))
;; Determine begin and end points of zone to indent. If moving
;; more than one item, ensure we keep them on subsequent moves.
(unless (and (memq last-command '(org-shiftmetaright org-shiftmetaleft))
(memq this-command '(org-shiftmetaright org-shiftmetaleft)))
(if regionp
(progn
(set-marker org-last-indent-begin-marker rbeg)
(set-marker org-last-indent-end-marker rend))
(set-marker org-last-indent-begin-marker (point-at-bol))
(set-marker org-last-indent-end-marker
(save-excursion
(cond
(specialp (org-list-bottom-point))
(no-subtree (org-end-of-item-or-at-child))
(t (org-end-of-item)))))))
;; Get everything ready
(let* ((beg (marker-position org-last-indent-begin-marker))
(end (marker-position org-last-indent-end-marker))
(struct (progn
(when specialp (narrow-to-region beg end))
(org-list-struct beg end (< arg 0))))
(origins (org-list-struct-origins struct))
(beg-item (assq beg struct)))
(cond
;; Special case: moving top-item with indent rule
(specialp
(let* ((level-skip (org-level-increment))
(offset (if (< arg 0) (- level-skip) level-skip))
(top-ind (nth 1 beg-item)))
(if (< (+ top-ind offset) 0)
(error "Cannot outdent beyond margin")
;; Change bullet if necessary
(when (and (= (+ top-ind offset) 0)
(string-match "*" (nth 2 beg-item)))
(setcdr beg-item (list (nth 1 beg-item)
(org-list-bullet-string "-"))))
;; Shift ancestor
(let ((anc (car struct)))
(setcdr anc (list (+ (nth 1 anc) offset) "" nil)))
(org-list-struct-fix-struct struct origins)
(org-list-struct-apply-struct struct))))
;; Forbidden move
((and (< arg 0)
(or (and no-subtree
(not regionp)
(org-list-struct-get-child beg-item struct))
(let ((last-item (save-excursion
(goto-char end)
(skip-chars-backward " \r\t\n")
(org-beginning-of-item)
(org-list-struct-assoc-at-point))))
(org-list-struct-get-child last-item struct))))
(error "Cannot outdent an item without its children"))
;; Normal shifting
(t
(let* ((shifted-ori (if (< arg 0)
(org-list-struct-outdent beg end origins)
(org-list-struct-indent beg end origins struct))))
(org-list-struct-fix-struct struct shifted-ori)
(org-list-struct-apply-struct struct)))))))))))
;;; Predicates