From 0fdd8c127b2253e4c3886f974c2d81d96da2e3a4 Mon Sep 17 00:00:00 2001
From: ueno <ueno>
Date: Fri, 26 May 2006 11:09:29 +0000
Subject: [PATCH] * epa.el (epa-popup-info-window): New user option.
 (epa-info-window-height): New user option.
 (epa-display-verify-result): New function.

---
 ChangeLog |    3 +++
 epa.el    |   59 +++++++++++++++++++++++++++++++++++++++++++++++------------
 2 files changed, 50 insertions(+), 12 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index ae017b9..1be35ca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,9 @@
 
 	* epa.el (epa-insert-keys): Renamed from epa-list-keys-1; don't
 	disable inhibit-quit here; make text-properties nonsticky.
+	(epa-popup-info-window): New user option.
+	(epa-info-window-height): New user option.
+	(epa-display-verify-result): New function.
 
 	* epg.el (epg-make-context): New slot "operation".
 	(epg-passphrase-callback-function): Confirm passphrase when
diff --git a/epa.el b/epa.el
index b9eb487..762b172 100644
--- a/epa.el
+++ b/epa.el
@@ -42,6 +42,17 @@
   :type 'boolean
   :group 'epa)
 
+(defcustom epa-popup-info-window t
+  "If non-nil, status information from epa commands is displayed on
+the separate window."
+  :type 'boolean
+  :group 'epa)
+
+(defcustom epa-info-window-height 5
+  "Number of lines used to display status information."
+  :type 'integer
+  :group 'epa)
+
 (defgroup epa-faces nil
   "Faces for epa-mode."
   :group 'epa)
@@ -154,6 +165,7 @@
 (defvar epa-key-buffer-alist nil)
 (defvar epa-key nil)
 (defvar epa-list-keys-arguments nil)
+(defvar epa-info-buffer nil)
 
 (defvar epa-keys-mode-map
   (let ((keymap (make-sparse-keymap)))
@@ -215,6 +227,35 @@
 	  (epg-sub-key-id (car (epg-key-sub-key-list
 				(widget-get widget :value))))))
 
+(defun epa--temp-buffer-show-function (buffer)
+  (save-selected-window
+    (let ((window (or (get-buffer-window epa-buffer-name)
+		      (progn
+			(select-window (get-largest-window))
+			(split-window-vertically)))))
+      (set-window-buffer window buffer)
+      (if window
+	  (select-window window))
+      (unless (pos-visible-in-window-p (point-max))
+	(enlarge-window (- epa-info-window-height (window-height))))
+      (let ((height (window-height)))
+	(if (> height epa-info-window-height)
+	    (shrink-window (- height epa-info-window-height)))
+	(set-window-start window (point-min))))))
+
+(defun epa-display-verify-result (verify-result)
+  (if epa-popup-info-window
+      (let ((temp-buffer-show-function #'epa--temp-buffer-show-function))
+	(unless epa-info-buffer
+	  (setq epa-info-buffer (generate-new-buffer "*Info*"))
+	  (with-current-buffer epa-info-buffer
+	    (setq buffer-read-only t)))
+	(with-output-to-temp-buffer epa-info-buffer
+	  (save-excursion
+	    (set-buffer standard-output)
+	    (insert (epg-verify-result-to-string verify-result)))))
+    (message "%s" (epg-verify-result-to-string verify-result))))
+
 (defun epa-keys-mode ()
   "Major mode for `epa-list-keys'."
   (kill-all-local-variables)
@@ -496,9 +537,7 @@ If ARG is non-nil, mark the current line."
     (epg-decrypt-file context file plain)
     (message "Decrypting %s...done" (file-name-nondirectory file))
     (if (epg-context-result-for context 'verify)
-	(message "%s"
-		 (epg-verify-result-to-string
-		  (epg-context-result-for context 'verify))))))
+	(epa-display-verify-result (epg-context-result-for context 'verify)))))
 
 ;;;###autoload
 (defun epa-verify-file (file)
@@ -510,9 +549,8 @@ If ARG is non-nil, mark the current line."
     (message "Verifying %s..." (file-name-nondirectory file))
     (epg-verify-file context file plain)
     (message "Verifying %s...done" (file-name-nondirectory file))
-    (message "%s"
-	     (epg-verify-result-to-string
-	      (epg-context-result-for context 'verify)))))
+    (if (epg-context-result-for context 'verify)
+	(epa-display-verify-result (epg-context-result-for context 'verify)))))
 
 ;;;###autoload
 (defun epa-sign-file (file signers mode)
@@ -572,9 +610,7 @@ Don't use this command in Lisp programs!"
       (goto-char start)
       (insert (decode-coding-string plain coding-system-for-read))
       (if (epg-context-result-for context 'verify)
-	  (message "%s"
-		   (epg-verify-result-to-string
-		    (epg-context-result-for context 'verify)))))))
+	  (epa-display-verify-result (epg-context-result-for context 'verify))))))
 
 ;;;###autoload
 (defun epa-decrypt-armor-in-region (start end)
@@ -615,9 +651,8 @@ Don't use this command in Lisp programs!"
 		       (encode-coding-string
 			(buffer-substring start end)
 			coding-system-for-write))
-    (message "%s"
-	     (epg-verify-result-to-string
-	      (epg-context-result-for context 'verify)))))
+    (if (epg-context-result-for context 'verify)
+	(epa-display-verify-result (epg-context-result-for context 'verify)))))
 
 ;;;###autoload
 (defun epa-verify-armor-in-region (start end)
-- 
1.7.10.4