;;; view.el --- peruse file or buffer without editing
-;; Copyright (C) 1985, 1989, 1994-1995, 1997, 2000-2011
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1989, 1994-1995, 1997, 2000-2013 Free Software
+;; Foundation, Inc.
;; Author: K. Shane Hartman
;; Maintainer: Inge Frick <inge@nada.kth.se>
Do not set EXIT-ACTION to `kill-buffer' when BUFFER visits a
file: Users may suspend viewing in order to modify the buffer.
Exiting View mode will then discard the user's edits. Setting
-EXIT-ACTION to `kill-buffer-if-not-modified' avoids this."
+EXIT-ACTION to `kill-buffer-if-not-modified' avoids this.
+
+This function does not enable View mode if the buffer's major-mode
+has a `special' mode-class, because such modes usually have their
+own View-like bindings."
(interactive "bView buffer: ")
- (if (eq (with-current-buffer buffer
- (get major-mode 'mode-class))
- 'special)
- (progn
- (switch-to-buffer buffer)
- (message "Not using View mode because the major mode is special"))
- (switch-to-buffer buffer)
+ (switch-to-buffer buffer)
+ (if (eq (get major-mode 'mode-class) 'special)
+ (message "Not using View mode because the major mode is special")
(view-mode-enter nil exit-action)))
;;;###autoload
Optional argument EXIT-ACTION is either nil or a function with buffer as
argument. This function is called when finished viewing buffer. Use
-this argument instead of explicitly setting `view-exit-action'."
+this argument instead of explicitly setting `view-exit-action'.
+
+This function does not enable View mode if the buffer's major-mode
+has a `special' mode-class, because such modes usually have their
+own View-like bindings."
(interactive "bIn other window view buffer:\nP")
(let ((pop-up-windows t))
(pop-to-buffer buffer t))
- (view-mode-enter nil exit-action))
+ (if (eq (get major-mode 'mode-class) 'special)
+ (message "Not using View mode because the major mode is special")
+ (view-mode-enter nil exit-action)))
;;;###autoload
(defun view-buffer-other-frame (buffer &optional not-return exit-action)
Optional argument EXIT-ACTION is either nil or a function with buffer as
argument. This function is called when finished viewing buffer. Use
-this argument instead of explicitly setting `view-exit-action'."
+this argument instead of explicitly setting `view-exit-action'.
+
+This function does not enable View mode if the buffer's major-mode
+has a `special' mode-class, because such modes usually have their
+own View-like bindings."
(interactive "bView buffer in other frame: \nP")
(let ((pop-up-frames t))
(pop-to-buffer buffer t))
- (view-mode-enter nil exit-action))
+ (if (eq (get major-mode 'mode-class) 'special)
+ (message "Not using View mode because the major mode is special")
+ (view-mode-enter nil exit-action)))
\f
;;;###autoload
(define-minor-mode view-mode
:lighter " View" :keymap view-mode-map
(if view-mode (view-mode-enable) (view-mode-disable)))
\f
-(defun view-mode-enable ()
- "Turn on View mode."
+(defun view-mode-enable (&optional run-view-mode-hook)
+ "Turn on View mode.
+Run `view-mode-hook' when RUN-VIEW-MODE-HOOK is non-nil."
;; Always leave view mode before changing major mode.
;; This is to guarantee that the buffer-read-only variable is restored.
(add-hook 'change-major-mode-hook 'view-mode-disable nil t)
(file-name-nondirectory (buffer-file-name))
(buffer-name)))))
(force-mode-line-update)
- (run-hooks 'view-mode-hook))
+ (when run-view-mode-hook
+ (run-hooks 'view-mode-hook)))
(defun view-mode-disable ()
"Turn off View mode."
"Update `view-return-to-alist' of buffer BUFFER.
Remove from `view-return-to-alist' all entries referencing dead
windows. Optional argument ITEM non-nil means add ITEM to
-`view-return-to-alist' after purging. For a decsription of items
+`view-return-to-alist' after purging. For a description of items
that can be added see the RETURN-TO-ALIST argument of the
function `view-mode-exit'. If `view-return-to-alist' contains an
entry for the selected window, purge that entry from
`view-return-to-alist' before adding ITEM."
+ (declare (obsolete "this function has no effect." "24.1"))
(with-current-buffer buffer
(when view-return-to-alist
(let* ((list view-return-to-alist)
(when item
(setq view-return-to-alist
(cons item view-return-to-alist)))))
-(make-obsolete 'view-return-to-alist-update "this function has no effect." "24.1")
;;;###autoload
(defun view-mode-enter (&optional quit-restore exit-action)
(setq view-exit-action exit-action))
(unless view-mode
- (view-mode-enable)
+ (view-mode-enable t)
(force-mode-line-update)
(unless view-inhibit-help-message
(message "%s"