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authorNicolas Goaziou <n.goaziou@gmail.com>2013-02-15 16:22:24 (GMT)
committer Nicolas Goaziou <n.goaziou@gmail.com>2013-02-15 16:24:20 (GMT)
commit5a1d46b99034345aabd8b1f4852806339f2726c2 (patch)
treef7ccbadccf289f7c331fced345a0553ccd76762a
parent1298b6468a7172923132e665b9870ec2a5699697 (diff)
downloadorg-mode-5a1d46b99034345aabd8b1f4852806339f2726c2.zip
org-mode-5a1d46b99034345aabd8b1f4852806339f2726c2.tar.gz
ox: Implement vertical scrolling in non-expert UI
* lisp/ox.el (org-export--dispatch-ui): Renamed from `org-export-dispatch-ui'. Handle scrolling. (org-export--dispatch-action): Renamed from `org-export-dispatch-action'. Implement scrolling. (org-export-dispatch): Apply renaming. Heavily based on a patch from Jambunathan K.
-rw-r--r--lisp/ox.el57
1 files changed, 40 insertions, 17 deletions
diff --git a/lisp/ox.el b/lisp/ox.el
index a7ebe5a..a3b43cd 100644
--- a/lisp/ox.el
+++ b/lisp/ox.el
@@ -5242,9 +5242,9 @@ files or buffers, only the display.
;;; The Dispatcher
;;
;; `org-export-dispatch' is the standard interactive way to start an
-;; export process. It uses `org-export-dispatch-ui' as a subroutine
+;; export process. It uses `org-export--dispatch-ui' as a subroutine
;; for its interface, which, in turn, delegates response to key
-;; pressed to `org-export-dispatch-action'.
+;; pressed to `org-export--dispatch-action'.
;;;###autoload
(defun org-export-dispatch (&optional arg)
@@ -5269,7 +5269,7 @@ When ARG is \\[universal-argument] \\[universal-argument], display the asynchron
(unwind-protect
;; Store this export command.
(setq org-export-dispatch-last-action
- (org-export-dispatch-ui
+ (org-export--dispatch-ui
(list org-export-initial-scope
(and org-export-in-background 'async))
nil
@@ -5301,7 +5301,7 @@ When ARG is \\[universal-argument] \\[universal-argument], display the asynchron
(and (memq 'visible optns) t)
(and (memq 'body optns) t))))))
-(defun org-export-dispatch-ui (options first-key expertp)
+(defun org-export--dispatch-ui (options first-key expertp)
"Handle interface for `org-export-dispatch'.
OPTIONS is a list containing current interactive options set for
@@ -5460,55 +5460,78 @@ back to standard interface."
;; With expert UI, just read key with a fancy prompt. In standard
;; UI, display an intrusive help buffer.
(if expertp
- (org-export-dispatch-action
+ (org-export--dispatch-action
expert-prompt allowed-keys backends options first-key expertp)
;; At first call, create frame layout in order to display menu.
(unless (get-buffer "*Org Export Dispatcher*")
(delete-other-windows)
(org-switch-to-buffer-other-window
(get-buffer-create "*Org Export Dispatcher*"))
- (setq cursor-type nil))
+ (setq cursor-type nil)
+ ;; Prevent square brackets from being highlighted when point
+ ;; moves onto them.
+ (modify-syntax-entry ?\[ "w"))
;; At this point, the buffer containing the menu exists and is
;; visible in the current window. So, refresh it.
(with-current-buffer "*Org Export Dispatcher*"
- (erase-buffer)
- (insert help))
+ ;; Refresh help. Maintain display continuity by re-visiting
+ ;; previous window position.
+ (let ((pos (window-start)))
+ (erase-buffer)
+ (insert help)
+ (set-window-start nil pos)))
(org-fit-window-to-buffer)
- (org-export-dispatch-action
+ (org-export--dispatch-action
standard-prompt allowed-keys backends options first-key expertp))))
-(defun org-export-dispatch-action
+(defun org-export--dispatch-action
(prompt allowed-keys backends options first-key expertp)
"Read a character from command input and act accordingly.
PROMPT is the displayed prompt, as a string. ALLOWED-KEYS is
a list of characters available at a given step in the process.
BACKENDS is a list of menu entries. OPTIONS, FIRST-KEY and
-EXPERTP are the same as defined in `org-export-dispatch-ui',
+EXPERTP are the same as defined in `org-export--dispatch-ui',
which see.
Toggle export options when required. Otherwise, return value is
a list with action as CAR and a list of interactive export
options as CDR."
- (let ((key (read-char-exclusive prompt)))
+ (let (key)
+ ;; Scrolling: when in non-expert mode, act on motion keys (C-n,
+ ;; C-p, SPC, DEL).
+ (while (and (setq key (read-char-exclusive prompt))
+ (not expertp)
+ (memq key '(? ? ?\s ?\d)))
+ (case key
+ (? (ignore-errors (scroll-up-line)))
+ (? (ignore-errors (scroll-down-line)))
+ (?\s (if (not (pos-visible-in-window-p (point-max)))
+ (scroll-up nil)
+ (message "End of buffer")
+ (sit-for 1)))
+ (?\d (if (not (pos-visible-in-window-p (point-min)))
+ (scroll-down nil)
+ (message "Beginning of buffer")
+ (sit-for 1)))))
(cond
;; Ignore undefined associations.
((not (memq key allowed-keys))
(ding)
(unless expertp (message "Invalid key") (sit-for 1))
- (org-export-dispatch-ui options first-key expertp))
+ (org-export--dispatch-ui options first-key expertp))
;; q key at first level aborts export. At second
;; level, cancel first key instead.
((eq key ?q) (if (not first-key) (error "Export aborted")
- (org-export-dispatch-ui options nil expertp)))
+ (org-export--dispatch-ui options nil expertp)))
;; Help key: Switch back to standard interface if
;; expert UI was active.
- ((eq key ??) (org-export-dispatch-ui options first-key nil))
+ ((eq key ??) (org-export--dispatch-ui options first-key nil))
;; Switch to asynchronous export stack.
((eq key ?&) '(stack))
;; Toggle export options.
((memq key '(? ? ? ? ?))
- (org-export-dispatch-ui
+ (org-export--dispatch-ui
(let ((option (case key (? 'body) (? 'visible) (? 'subtree)
(? 'force) (? 'async))))
(if (memq option options) (remq option options)
@@ -5537,7 +5560,7 @@ options as CDR."
(member (assq first-key backends) backends)))))
options))
;; Otherwise, enter sub-menu.
- (t (org-export-dispatch-ui options key expertp)))))
+ (t (org-export--dispatch-ui options key expertp)))))