[PATCH 3/7] emacs: hello: store previous saved-search results

diff --git a/31/ab5aeaa3dbd40d876e71b80382917d8f469b78 b/31/ab5aeaa3dbd40d876e71b80382917d8f469b78
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+       Sun, 11 May 2014 01:34:52 -0700 (PDT)\r
+From: Mark Walters <markwalters1009@gmail.com>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH 3/7] emacs: hello: store previous saved-search results\r
+Date: Sun, 11 May 2014 09:34:38 +0100\r
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+\r
+This adds a variable which keeps track of the previous saved search\r
+results. It is stored as a plist with keys being the saved\r
+searches. The result the saved search display function gave last time\r
+is passed to the display-function as the the keyword :old argument.\r
+\r
+This is useful for display functions that want to keep some state: eg\r
+to show that the count has changed, new messages have arrived etc. The\r
+function returns a saved search style plist so it can store any\r
+information it likes inside this plist.\r
+---\r
+ emacs/notmuch-hello.el |    8 ++++++++\r
+ 1 file changed, 8 insertions(+)\r
+\r
+diff --git a/emacs/notmuch-hello.el b/emacs/notmuch-hello.el\r
+index 7075860..e11006b 100644\r
+--- a/emacs/notmuch-hello.el\r
++++ b/emacs/notmuch-hello.el\r
+@@ -127,6 +127,10 @@ (defcustom notmuch-saved-searches '((:name "inbox" :query "tag:inbox")\r
+   :tag "List of Saved Searches"\r
+   :group 'notmuch-hello)\r
+ \r
++(defvar notmuch-hello-saved-search-results nil\r
++  "Current saved search counts as a plist")\r
++(make-local-variable 'notmuch-hello-saved-search-results)\r
++\r
+ (defcustom notmuch-hello-recent-searches-max 10\r
+   "The number of recent searches to display."\r
+   :type 'integer\r
+@@ -541,11 +545,15 @@ (defun notmuch-hello-query-counts (query-list &rest options)\r
+       (lambda (elem)\r
+       (let* ((elem-plist (notmuch-hello-saved-search-to-plist elem))\r
+              (display-function (plist-get elem-plist :display-function))\r
++             (old-result (plist-get notmuch-hello-saved-search-results elem))\r
+              (result (if display-function\r
+                           (funcall display-function\r
+                                    :current elem-plist\r
++                                   :old old-result\r
+                                    :option options)\r
+                         (notmuch-hello-batch-message-count elem-plist options))))\r
++        (setq notmuch-hello-saved-search-results\r
++              (plist-put notmuch-hello-saved-search-results elem result))\r
+         result))\r
+       query-list))))\r
+ \r
+-- \r
+1.7.10.4\r
+\r