Merge from emacs-24; up to 2012-12-06T01:39:03Z!monnier@iro.umontreal.ca

[gnu-emacs] / lisp / vc / vc-dir.el

diff --git a/lisp/vc/vc-dir.el b/lisp/vc/vc-dir.el
index e3b9941fe18d2d39ee6be541d49193b38e3b9d4b..d10e39346801ee2a57db77b98d9bde84b90f915f 100644 (file)
--- a/lisp/vc/vc-dir.el
+++ b/lisp/vc/vc-dir.el
@@ -930,6 +930,8 @@ If it is a file, return the corresponding cons for the file itself."
 
 (defvar use-vc-backend)  ;; dynamically bound
 
+;; Autoload cookie needed by desktop.el.
+;;;###autoload
 (define-derived-mode vc-dir-mode special-mode "VC dir"
   "Major mode for VC directory buffers.
 Marking/Unmarking key bindings and actions:
@@ -967,6 +969,8 @@ the *vc-dir* buffer.
 
 \\{vc-dir-mode-map}"
   (set (make-local-variable 'vc-dir-backend) use-vc-backend)
+  (set (make-local-variable 'desktop-save-buffer)
+       'vc-dir-desktop-buffer-misc-data)
   (setq buffer-read-only t)
   (when (boundp 'tool-bar-map)
     (set (make-local-variable 'tool-bar-map) vc-dir-tool-bar-map))
@@ -1288,6 +1292,31 @@ These are the commands available for use in the file status buffer:
   "Default absence of extra information returned for a file."
   nil)
 
+\f
+;;; Support for desktop.el (adapted from what dired.el does).
+
+(declare-function desktop-file-name "desktop" (filename dirname))
+
+(defun vc-dir-desktop-buffer-misc-data (dirname)
+  "Auxiliary information to be saved in desktop file."
+  (cons (desktop-file-name default-directory dirname) vc-dir-backend))
+
+(defun vc-dir-restore-desktop-buffer (_filename _buffername misc-data)
+  "Restore a `vc-dir' buffer specified in a desktop file."
+  (let ((dir (car misc-data))
+       (backend (cdr misc-data)))
+    (if (file-directory-p dir)
+       (progn
+         (vc-dir dir backend)
+         (current-buffer))
+      (message "Desktop: Directory %s no longer exists." dir)
+      (when desktop-missing-file-warning (sit-for 1))
+      nil)))
+
+(add-to-list 'desktop-buffer-mode-handlers
+            '(vc-dir-mode . vc-dir-restore-desktop-buffer))
+
+\f
 (provide 'vc-dir)
 
 ;;; vc-dir.el ends here