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- ;;; Commands to move around within a VM message
- ;;; Copyright (C) 1989-1997 Kyle E. Jones
- ;;;
- ;;; 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 1, 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 this program; if not, write to the Free Software
- ;;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- (provide 'vm-page)
-
- (defun vm-scroll-forward (&optional arg)
- "Scroll forward a screenful of text.
- If the current message is being previewed, the message body is revealed.
- If at the end of the current message, moves to the next message iff the
- value of vm-auto-next-message is non-nil.
- Prefix argument N means scroll forward N lines."
- (interactive "P")
- (let ((mp-changed (vm-follow-summary-cursor))
- needs-decoding
- (was-invisible nil))
- (vm-select-folder-buffer)
- (vm-check-for-killed-summary)
- (vm-check-for-killed-presentation)
- (vm-error-if-folder-empty)
- (setq needs-decoding (and vm-display-using-mime
- (not vm-mime-decoded)
- (not (vm-mime-plain-message-p
- (car vm-message-pointer)))
- vm-auto-decode-mime-messages
- (eq vm-system-state 'previewing)))
- (and vm-presentation-buffer
- (set-buffer vm-presentation-buffer))
- (let ((point (point))
- (w (vm-get-visible-buffer-window (current-buffer))))
- (if (or (null w)
- (not (vm-frame-totally-visible-p (vm-window-frame w))))
- (progn
- (vm-display (current-buffer) t
- '(vm-scroll-forward vm-scroll-backward)
- (list this-command 'reading-message))
- ;; window start sticks to end of clip region when clip
- ;; region moves back past it in the buffer. fix it.
- (setq w (vm-get-visible-buffer-window (current-buffer)))
- (if (= (window-start w) (point-max))
- (set-window-start w (point-min)))
- (setq was-invisible t))))
- (if (or mp-changed was-invisible needs-decoding
- (and (eq vm-system-state 'previewing)
- (pos-visible-in-window-p
- (point-max)
- (vm-get-visible-buffer-window (current-buffer)))))
- (progn
- (if (not was-invisible)
- (let ((w (vm-get-visible-buffer-window (current-buffer)))
- old-w-start)
- (setq old-w-start (window-start w))
- (vm-display nil nil '(vm-scroll-forward vm-scroll-backward)
- (list this-command 'reading-message))
- (setq w (vm-get-visible-buffer-window (current-buffer)))
- (and w (set-window-start w old-w-start))))
- (if (eq vm-system-state 'previewing)
- (vm-show-current-message))
- (vm-howl-if-eom))
- (let ((vmp vm-message-pointer)
- (msg-buf (current-buffer))
- (h-diff 0)
- w old-w old-w-height old-w-start result)
- (if (eq vm-system-state 'previewing)
- (vm-show-current-message))
- (setq vm-system-state 'reading)
- (setq old-w (vm-get-visible-buffer-window msg-buf)
- old-w-height (window-height old-w)
- old-w-start (window-start old-w))
- (vm-display nil nil '(vm-scroll-forward vm-scroll-backward)
- (list this-command 'reading-message))
- (setq w (vm-get-visible-buffer-window msg-buf))
- (if (null w)
- (error "current window configuration hides the message buffer.")
- (setq h-diff (- (window-height w) old-w-height)))
- ;; must restore this since it gets clobbered by window
- ;; teardown and rebuild done by the window config stuff.
- (set-window-start w old-w-start)
- (setq old-w (selected-window))
- (unwind-protect
- (progn
- (select-window w)
- (let ((next-screen-context-lines
- (+ next-screen-context-lines h-diff)))
- (while (eq (setq result (vm-scroll-forward-internal arg))
- 'tryagain))
- (cond ((and (not (eq result 'next-message))
- vm-honor-page-delimiters)
- (vm-narrow-to-page)
- ;; This voodoo is required! For some
- ;; reason the 18.52 emacs display
- ;; doesn't immediately reflect the
- ;; clip region change that occurs
- ;; above without this mantra.
- (scroll-up 0)))))
- (select-window old-w))
- (set-buffer msg-buf)
- (cond ((eq result 'next-message)
- (vm-next-message))
- ((eq result 'end-of-message)
- (let ((vm-message-pointer vmp))
- (vm-emit-eom-blurb)))
- (t
- (and (> (prefix-numeric-value arg) 0)
- (vm-howl-if-eom)))))))
- (if (not vm-startup-message-displayed)
- (vm-display-startup-message)))
-
- (defun vm-scroll-forward-internal (arg)
- (let ((direction (prefix-numeric-value arg))
- (w (selected-window)))
- (condition-case error-data
- (progn (scroll-up arg) nil)
- ;; this looks like it should work, but doesn't because the
- ;; redisplay code is schizophrenic when it comes to updates. A
- ;; window position may no longer be visible but
- ;; pos-visible-in-window-p will still say it is because it was
- ;; visible before some window size change happened.
- ;; (progn
- ;; (if (and (> direction 0)
- ;; (pos-visible-in-window-p
- ;; (vm-text-end-of (car vm-message-pointer))))
- ;; (signal 'end-of-buffer nil)
- ;; (scroll-up arg))
- ;; nil )
- (error
- (if (or (and (< direction 0)
- (> (point-min) (vm-text-of (car vm-message-pointer))))
- (and (>= direction 0)
- (/= (point-max)
- (vm-text-end-of (car vm-message-pointer)))))
- (progn
- (vm-widen-page)
- (if (>= direction 0)
- (progn
- (forward-page 1)
- (set-window-start w (point))
- nil )
- (if (or (bolp)
- (not (save-excursion
- (beginning-of-line)
- (looking-at page-delimiter))))
- (forward-page -1))
- (beginning-of-line)
- (set-window-start w (point))
- 'tryagain))
- (if (eq (car error-data) 'end-of-buffer)
- (if vm-auto-next-message
- 'next-message
- (set-window-point w (point))
- 'end-of-message)))))))
-
- ;; exploratory scrolling, what a concept.
- ;;
- ;; we do this because pos-visible-in-window-p checks the current
- ;; window configuration, while this exploratory scrolling forces
- ;; Emacs to recompute the display, giving us an up to the moment
- ;; answer about where the end of the message is going to be
- ;; visible when redisplay finally does occur.
- (defun vm-howl-if-eom ()
- (let ((w (get-buffer-window (current-buffer))))
- (and w
- (save-excursion
- (save-window-excursion
- (condition-case ()
- (let ((next-screen-context-lines 0))
- (select-window w)
- (save-excursion
- (save-window-excursion
- ;; scroll-fix.el replaces scroll-up and
- ;; doesn't behave properly when it hits
- ;; end of buffer. It does this!
- ;; (ding)
- ;; (message (get 'beginning-of-buffer 'error-message))
- (let ((scroll-in-place-replace-original nil))
- (scroll-up nil))))
- nil)
- (error t))))
- (= (vm-text-end-of (car vm-message-pointer)) (point-max))
- (vm-emit-eom-blurb))))
-
- (defun vm-emit-eom-blurb ()
- (if (vm-full-name-of (car vm-message-pointer))
- (message "End of message %s from %s"
- (vm-number-of (car vm-message-pointer))
- (vm-full-name-of (car vm-message-pointer)))
- (message "End of message %s"
- (vm-number-of (car vm-message-pointer)))))
-
- (defun vm-scroll-backward (&optional arg)
- "Scroll backward a screenful of text.
- Prefix N scrolls backward N lines."
- (interactive "P")
- (vm-scroll-forward (cond ((null arg) '-)
- ((consp arg) (list (- (car arg))))
- ((numberp arg) (- arg))
- ((symbolp arg) nil)
- (t arg))))
-
- (defun vm-highlight-headers ()
- (cond
- ((and vm-xemacs-p vm-use-lucid-highlighting)
- (require 'highlight-headers)
- ;; disable the url marking stuff, since VM has its own interface.
- (let ((highlight-headers-mark-urls nil)
- (highlight-headers-regexp (or vm-highlighted-header-regexp
- highlight-headers-regexp)))
- (highlight-headers (point-min) (point-max) t)))
- (vm-xemacs-p
- (let (e)
- (map-extents (function
- (lambda (e ignore)
- (if (extent-property e 'vm-highlight)
- (delete-extent e))
- nil))
- (current-buffer) (point-min) (point-max))
- (goto-char (point-min))
- (while (vm-match-header)
- (cond ((vm-match-header vm-highlighted-header-regexp)
- (setq e (make-extent (vm-matched-header-contents-start)
- (vm-matched-header-contents-end)))
- (set-extent-property e 'face vm-highlighted-header-face)
- (set-extent-property e 'vm-highlight t)))
- (goto-char (vm-matched-header-end)))))
- ((fboundp 'overlay-put)
- (let (o-lists p)
- (setq o-lists (overlay-lists)
- p (car o-lists))
- (while p
- (and (overlay-get (car p) 'vm-highlight)
- (delete-overlay (car p)))
- (setq p (cdr p)))
- (setq p (cdr o-lists))
- (while p
- (and (overlay-get (car p) 'vm-highlight)
- (delete-overlay (car p)))
- (setq p (cdr p)))
- (goto-char (point-min))
- (while (vm-match-header)
- (cond ((vm-match-header vm-highlighted-header-regexp)
- (setq p (make-overlay (vm-matched-header-contents-start)
- (vm-matched-header-contents-end)))
- (overlay-put p 'face vm-highlighted-header-face)
- (overlay-put p 'vm-highlight t)))
- (goto-char (vm-matched-header-end)))))))
-
- (defun vm-energize-urls ()
- ;; Don't search too long in large regions. If the region is
- ;; large, search just the head and the tail of the region since
- ;; they tend to contain the interesting text.
- (let ((search-limit vm-url-search-limit)
- search-pairs n)
- (if (and search-limit (> (- (point-max) (point-min)) search-limit))
- (setq search-pairs (list (cons (point-min)
- (+ (point-min) (/ search-limit 2)))
- (cons (- (point-max) (/ search-limit 2))
- (point-max))))
- (setq search-pairs (list (cons (point-min) (point-max)))))
- (cond
- (vm-xemacs-p
- (let (e)
- (map-extents (function
- (lambda (e ignore)
- (if (extent-property e 'vm-url)
- (delete-extent e))
- nil))
- (current-buffer) (point-min) (point-max))
- (while search-pairs
- (goto-char (car (car search-pairs)))
- (while (re-search-forward vm-url-regexp (cdr (car search-pairs)) t)
- (setq n 1)
- (while (null (match-beginning n))
- (vm-increment n))
- (setq e (make-extent (match-beginning n) (match-end n)))
- (set-extent-property e 'vm-url t)
- (if vm-highlight-url-face
- (set-extent-property e 'face vm-highlight-url-face))
- (if vm-url-browser
- (let ((keymap (make-sparse-keymap))
- (popup-function
- (if (save-excursion
- (goto-char (match-beginning n))
- (looking-at "mailto:"))
- 'vm-menu-popup-mailto-url-browser-menu
- 'vm-menu-popup-url-browser-menu)))
- (define-key keymap 'button2 'vm-mouse-send-url-at-event)
- (if vm-popup-menu-on-mouse-3
- (define-key keymap 'button3 popup-function))
- (define-key keymap "\r"
- (function (lambda () (interactive)
- (vm-mouse-send-url-at-position (point)))))
- (set-extent-property e 'keymap keymap)
- (set-extent-property e 'balloon-help 'vm-url-help)
- (set-extent-property e 'highlight t))))
- (setq search-pairs (cdr search-pairs)))))
- ((and vm-fsfemacs-p
- (fboundp 'overlay-put))
- (let (o-lists o p)
- (setq o-lists (overlay-lists)
- p (car o-lists))
- (while p
- (and (overlay-get (car p) 'vm-url)
- (delete-overlay (car p)))
- (setq p (cdr p)))
- (setq p (cdr o-lists))
- (while p
- (and (overlay-get (car p) 'vm-url)
- (delete-overlay (car p)))
- (setq p (cdr p)))
- (while search-pairs
- (goto-char (car (car search-pairs)))
- (while (re-search-forward vm-url-regexp (cdr (car search-pairs)) t)
- (setq n 1)
- (while (null (match-beginning n))
- (vm-increment n))
- (setq o (make-overlay (match-beginning n) (match-end n)))
- (overlay-put o 'vm-url t)
- (if vm-highlight-url-face
- (overlay-put o 'face vm-highlight-url-face))
- (if vm-url-browser
- (let ((keymap (make-sparse-keymap))
- (popup-function
- (if (save-excursion
- (goto-char (match-beginning n))
- (looking-at "mailto:"))
- 'vm-menu-popup-mailto-url-browser-menu
- 'vm-menu-popup-url-browser-menu)))
- (overlay-put o 'mouse-face 'highlight)
- (setq keymap (nconc keymap (current-local-map)))
- (if vm-popup-menu-on-mouse-3
- (define-key keymap [mouse-3] popup-function))
- (define-key keymap "\r"
- (function (lambda () (interactive)
- (vm-mouse-send-url-at-position (point)))))
- (overlay-put o 'local-map keymap))))
- (setq search-pairs (cdr search-pairs))))))))
-
- (defun vm-energize-headers ()
- (cond
- (vm-xemacs-p
- (let ((search-tuples '(("^From:" vm-menu-author-menu)
- ("^Subject:" vm-menu-subject-menu)))
- regexp menu keymap e)
- (map-extents (function
- (lambda (e ignore)
- (if (extent-property e 'vm-header)
- (delete-extent e))
- nil))
- (current-buffer) (point-min) (point-max))
- (while search-tuples
- (goto-char (point-min))
- (setq regexp (nth 0 (car search-tuples))
- menu (symbol-value (nth 1 (car search-tuples))))
- (while (re-search-forward regexp nil t)
- (save-excursion (goto-char (match-beginning 0)) (vm-match-header))
- (setq e (make-extent (vm-matched-header-contents-start)
- (vm-matched-header-contents-end)))
- (set-extent-property e 'vm-header t)
- (setq keymap (make-sparse-keymap))
- ;; Might as well make button2 do what button3 does in
- ;; this case, since there is no default 'select'
- ;; action.
- (define-key keymap 'button2
- (list 'lambda () '(interactive)
- (list 'popup-menu (list 'quote menu))))
- (if vm-popup-menu-on-mouse-3
- (define-key keymap 'button3
- (list 'lambda () '(interactive)
- (list 'popup-menu (list 'quote menu)))))
- (set-extent-property e 'keymap keymap)
- (set-extent-property e 'balloon-help 'vm-mouse-3-help)
- (set-extent-property e 'highlight t))
- (setq search-tuples (cdr search-tuples)))))
- ((and vm-fsfemacs-p
- (fboundp 'overlay-put))
- (let ((search-tuples '(("^From:" vm-menu-fsfemacs-author-menu)
- ("^Subject:" vm-menu-fsfemacs-subject-menu)))
- regexp menu
- o-lists o p)
- (setq o-lists (overlay-lists)
- p (car o-lists))
- (while p
- (and (overlay-get (car p) 'vm-header)
- (delete-overlay (car p)))
- (setq p (cdr p)))
- (setq p (cdr o-lists))
- (while p
- (and (overlay-get (car p) 'vm-header)
- (delete-overlay (car p)))
- (setq p (cdr p)))
- (while search-tuples
- (goto-char (point-min))
- (setq regexp (nth 0 (car search-tuples))
- menu (symbol-value (nth 1 (car search-tuples))))
- (while (re-search-forward regexp nil t)
- (goto-char (match-end 0))
- (save-excursion (goto-char (match-beginning 0)) (vm-match-header))
- (setq o (make-overlay (vm-matched-header-contents-start)
- (vm-matched-header-contents-end)))
- (overlay-put o 'vm-header menu)
- (overlay-put o 'mouse-face 'highlight))
- (setq search-tuples (cdr search-tuples)))))))
-
- (defun vm-display-xface ()
- (let ((case-fold-search t) e g h)
- (if (map-extents (function
- (lambda (e ignore)
- (if (extent-property e 'vm-xface)
- t
- nil)))
- (current-buffer) (point-min) (point-max))
- nil
- (goto-char (point-min))
- (if (find-face 'vm-xface)
- nil
- (make-face 'vm-xface)
- (set-face-background 'vm-xface "white")
- (set-face-foreground 'vm-xface "black"))
- (if (re-search-forward "^X-Face:" nil t)
- (progn
- (goto-char (match-beginning 0))
- (vm-match-header)
- (setq h (concat "X-Face: " (vm-matched-header-contents)))
- (setq g (intern h vm-xface-cache))
- (if (boundp g)
- (setq g (symbol-value g))
- (set g (make-glyph
- (list
- (list 'global (cons '(tty) [nothing]))
- (list 'global (cons '(win) (vector 'xface ':data h))))))
- (setq g (symbol-value g))
- ;; XXX broken. Gives extra pixel lines at the
- ;; bottom of the glyph in 19.12
- ;;(set-glyph-baseline g 100)
- (set-glyph-face g 'vm-xface))
- (setq e (make-extent (vm-vheaders-of (car vm-message-pointer))
- (vm-vheaders-of (car vm-message-pointer))))
- (set-extent-property e 'vm-xface t)
- (set-extent-begin-glyph e g))))))
-
- (defun vm-url-help (object)
- (format
- "Use mouse button 2 to send the URL to %s.
- Use mouse button 3 to choose a Web browser for the URL."
- (cond ((stringp vm-url-browser) vm-url-browser)
- ((eq vm-url-browser 'w3-fetch)
- "Emacs W3")
- ((eq vm-url-browser 'w3-fetch-other-frame)
- "Emacs W3")
- ((eq vm-url-browser 'vm-mouse-send-url-to-mosaic)
- "Mosaic")
- ((eq vm-url-browser 'vm-mouse-send-url-to-netscape)
- "Netscape")
- (t (symbol-name vm-url-browser)))))
-
- (defun vm-energize-urls-in-message-region (&optional start end)
- (save-excursion
- (or start (setq start (vm-headers-of (car vm-message-pointer))))
- (or end (setq end (vm-text-end-of (car vm-message-pointer))))
- ;; energize the URLs
- (if (or vm-highlight-url-face vm-url-browser)
- (save-restriction
- (widen)
- (narrow-to-region start end)
- (vm-energize-urls)))))
-
- (defun vm-highlight-headers-maybe ()
- ;; highlight the headers
- (if (or vm-highlighted-header-regexp
- (and vm-xemacs-p vm-use-lucid-highlighting))
- (save-restriction
- (widen)
- (narrow-to-region (vm-headers-of (car vm-message-pointer))
- (vm-text-end-of (car vm-message-pointer)))
- (vm-highlight-headers))))
-
- (defun vm-energize-headers-and-xfaces ()
- ;; energize certain headers
- (if (and vm-use-menus (vm-menu-support-possible-p))
- (save-restriction
- (widen)
- (narrow-to-region (vm-headers-of (car vm-message-pointer))
- (vm-text-of (car vm-message-pointer)))
- (vm-energize-headers)))
- ;; display xfaces, if we can
- (if (and vm-display-xfaces
- vm-xemacs-p
- (featurep 'xface))
- (save-restriction
- (widen)
- (narrow-to-region (vm-headers-of (car vm-message-pointer))
- (vm-text-of (car vm-message-pointer)))
- (vm-display-xface))))
-
- (defun vm-narrow-for-preview ()
- (widen)
- ;; hide as much of the message body as vm-preview-lines specifies
- (narrow-to-region
- (vm-vheaders-of (car vm-message-pointer))
- (cond ((not (eq vm-preview-lines t))
- (min
- (vm-text-end-of (car vm-message-pointer))
- (save-excursion
- (goto-char (vm-text-of (car vm-message-pointer)))
- (forward-line (if (natnump vm-preview-lines) vm-preview-lines 0))
- (point))))
- (t (vm-text-end-of (car vm-message-pointer))))))
-
- (defun vm-preview-current-message ()
- (vm-save-buffer-excursion
- (setq vm-system-state 'previewing
- vm-mime-decoded nil)
- (if vm-real-buffers
- (vm-make-virtual-copy (car vm-message-pointer)))
-
- ;; run the message select hooks.
- (save-excursion
- (vm-select-folder-buffer)
- (vm-run-message-hook (car vm-message-pointer) 'vm-select-message-hook)
- (and vm-select-new-message-hook (vm-new-flag (car vm-message-pointer))
- (vm-run-message-hook (car vm-message-pointer)
- 'vm-select-new-message-hook))
- (and vm-select-unread-message-hook
- (vm-unread-flag (car vm-message-pointer))
- (vm-run-message-hook (car vm-message-pointer)
- 'vm-select-unread-message-hook)))
-
- (vm-narrow-for-preview)
- (if (or vm-mime-display-function
- (and vm-display-using-mime
- (not (vm-mime-plain-message-p (car vm-message-pointer)))))
- (let ((layout (vm-mm-layout (car vm-message-pointer))))
- (vm-make-presentation-copy (car vm-message-pointer))
- (vm-save-buffer-excursion
- (vm-replace-buffer-in-windows (current-buffer)
- vm-presentation-buffer))
- (set-buffer vm-presentation-buffer)
- (setq vm-system-state 'previewing)
- (vm-narrow-for-preview))
- (setq vm-presentation-buffer nil)
- (and vm-presentation-buffer-handle
- (vm-replace-buffer-in-windows vm-presentation-buffer-handle
- (current-buffer))))
-
- ;; at this point the current buffer is the presentation buffer
- ;; if we're using one for this message.
-
- (vm-unbury-buffer (current-buffer))
- (vm-energize-urls-in-message-region)
- (vm-highlight-headers-maybe)
- (vm-energize-headers-and-xfaces)
-
- (if vm-honor-page-delimiters
- (vm-narrow-to-page))
- (goto-char (vm-text-of (car vm-message-pointer)))
- ;; If we have a window, set window start appropriately.
- (let ((w (vm-get-visible-buffer-window (current-buffer))))
- (if w
- (progn (set-window-start w (point-min))
- (set-window-point w (vm-text-of (car vm-message-pointer))))))
- (if (or (null vm-preview-lines)
- (and (not vm-preview-read-messages)
- (not (vm-new-flag (car vm-message-pointer)))
- (not (vm-unread-flag (car vm-message-pointer)))))
- (vm-show-current-message)
- (vm-update-summary-and-mode-line))))
-
- (defun vm-show-current-message ()
- (and vm-display-using-mime
- vm-auto-decode-mime-messages
- (if vm-mail-buffer
- (not (vm-buffer-variable-value vm-mail-buffer 'vm-mime-decoded))
- (not vm-mime-decoded))
- (not (vm-mime-plain-message-p (car vm-message-pointer)))
- (condition-case data
- (vm-decode-mime-message)
- (vm-mime-error (vm-set-mime-layout-of (car vm-message-pointer)
- (car (cdr data)))
- (message "%s" (car (cdr data))))))
- (vm-save-buffer-excursion
- (save-excursion
- (save-excursion
- (goto-char (point-min))
- (widen)
- (narrow-to-region (point) (vm-text-end-of (car vm-message-pointer))))
- (if vm-honor-page-delimiters
- (progn
- (if (looking-at page-delimiter)
- (forward-page 1))
- (vm-narrow-to-page))))
- ;; don't mark the message as read if the user can't see it!
- (if (vm-get-visible-buffer-window (current-buffer))
- (progn
- (save-excursion
- (setq vm-system-state 'showing)
- (if vm-mail-buffer
- (vm-set-buffer-variable vm-mail-buffer 'vm-system-state
- 'showing))
- ;; We could be in the presentation buffer here. Since
- ;; the presentation buffer's message pointer and sole
- ;; message are a mockup, they will cause trouble if
- ;; passed into the undo/update system. So we switch
- ;; into the real message buffer to do attribute
- ;; updates.
- (vm-select-folder-buffer)
- (cond ((vm-new-flag (car vm-message-pointer))
- (vm-set-new-flag (car vm-message-pointer) nil)))
- (cond ((vm-unread-flag (car vm-message-pointer))
- (vm-set-unread-flag (car vm-message-pointer) nil))))
- (vm-update-summary-and-mode-line)
- (vm-howl-if-eom))
- (vm-update-summary-and-mode-line))))
-
- (defun vm-expose-hidden-headers ()
- "Toggle exposing and hiding message headers that are normally not visible."
- (interactive)
- (vm-follow-summary-cursor)
- (vm-select-folder-buffer)
- (vm-check-for-killed-summary)
- (vm-check-for-killed-presentation)
- (vm-error-if-folder-empty)
- (and vm-presentation-buffer
- (set-buffer vm-presentation-buffer))
- (vm-display (current-buffer) t '(vm-expose-hidden-headers)
- '(vm-expose-hidden-headers reading-message))
- (let* ((exposed (= (point-min) (vm-start-of (car vm-message-pointer)))))
- (vm-widen-page)
- (goto-char (point-max))
- (widen)
- (if exposed
- (narrow-to-region (point) (vm-vheaders-of (car vm-message-pointer)))
- (narrow-to-region (point) (vm-start-of (car vm-message-pointer))))
- (goto-char (point-min))
- (let (w)
- (setq w (vm-get-visible-buffer-window (current-buffer)))
- (and w (set-window-point w (point-min)))
- (and w
- (= (window-start w) (vm-vheaders-of (car vm-message-pointer)))
- (not exposed)
- (set-window-start w (vm-start-of (car vm-message-pointer)))))
- (if vm-honor-page-delimiters
- (vm-narrow-to-page))))
-
- (defun vm-widen-page ()
- (if (or (> (point-min) (vm-text-of (car vm-message-pointer)))
- (/= (point-max) (vm-text-end-of (car vm-message-pointer))))
- (narrow-to-region (vm-vheaders-of (car vm-message-pointer))
- (if (or (vm-new-flag (car vm-message-pointer))
- (vm-unread-flag (car vm-message-pointer)))
- (vm-text-of (car vm-message-pointer))
- (vm-text-end-of (car vm-message-pointer))))))
-
- (defun vm-narrow-to-page ()
- (save-excursion
- (let (min max (omin (point-min)) (omax (point-max)))
- (if (or (bolp) (not (save-excursion
- (beginning-of-line)
- (looking-at page-delimiter))))
- (forward-page -1))
- (setq min (point))
- (forward-page 1)
- (beginning-of-line)
- (setq max (point))
- (narrow-to-region min max))))
-
- (defun vm-beginning-of-message ()
- "Moves to the beginning of the current message."
- (interactive)
- (vm-follow-summary-cursor)
- (vm-select-folder-buffer)
- (vm-check-for-killed-summary)
- (vm-check-for-killed-presentation)
- (vm-error-if-folder-empty)
- (and vm-presentation-buffer
- (set-buffer vm-presentation-buffer))
- (vm-widen-page)
- (push-mark)
- (vm-display (current-buffer) t '(vm-beginning-of-message)
- '(vm-beginning-of-message reading-message))
- (let ((osw (selected-window)))
- (unwind-protect
- (progn
- (select-window (vm-get-visible-buffer-window (current-buffer)))
- (goto-char (point-min)))
- (if (not (eq osw (selected-window)))
- (select-window osw))))
- (if vm-honor-page-delimiters
- (vm-narrow-to-page)))
-
- (defun vm-end-of-message ()
- "Moves to the end of the current message, exposing and flagging it read
- as necessary."
- (interactive)
- (vm-follow-summary-cursor)
- (vm-select-folder-buffer)
- (vm-check-for-killed-summary)
- (vm-check-for-killed-presentation)
- (vm-error-if-folder-empty)
- (and vm-presentation-buffer
- (set-buffer vm-presentation-buffer))
- (if (eq vm-system-state 'previewing)
- (vm-show-current-message))
- (setq vm-system-state 'reading)
- (vm-widen-page)
- (push-mark)
- (vm-display (current-buffer) t '(vm-end-of-message)
- '(vm-end-of-message reading-message))
- (let ((osw (selected-window)))
- (unwind-protect
- (progn
- (select-window (vm-get-visible-buffer-window (current-buffer)))
- (goto-char (point-max)))
- (if (not (eq osw (selected-window)))
- (select-window osw))))
- (if vm-honor-page-delimiters
- (vm-narrow-to-page)))
-