From bfa005de36f4f80f34d622276676a629ca7918f9 Mon Sep 17 00:00:00 2001
From: jao <jao@gnu.org>
Date: Wed, 18 Aug 2021 22:17:34 +0100
Subject: notmuch: tree folding improvements

---
 lib/net/jao-notmuch.el | 62 ++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 48 insertions(+), 14 deletions(-)

(limited to 'lib/net')

diff --git a/lib/net/jao-notmuch.el b/lib/net/jao-notmuch.el
index 1bcdaef..ad5657f 100644
--- a/lib/net/jao-notmuch.el
+++ b/lib/net/jao-notmuch.el
@@ -282,6 +282,13 @@
 
 (defun jao-notmuch--tree-top () (notmuch-tree-get-prop :first))
 
+(defun jao-notmuch--tree-bottom ()
+  (let ((line-move-ignore-invisible t))
+    (save-excursion
+      (when (zerop (forward-line 1))
+        (or (not (notmuch-tree-get-message-properties))
+            (jao-notmuch--tree-top))))))
+
 (defun jao-notmuch-tree-hide-thread ()
   (interactive)
   (notmuch-tree-thread-top)
@@ -313,15 +320,12 @@
 
 (defun jao-notmuch-tree-hide-all ()
   (interactive)
-  (goto-char (point-min))
   (let ((inhibit-read-only t)
         (line-move-ignore-invisible nil))
-    (while (not (eobp))
-      (forward-line)
-      (unless (jao-notmuch--tree-top)
-        (put-text-property (point)
-                           (min (1+ (line-end-position)) (point-max))
-                           'invisible t))))
+      (goto-char (point-min))
+      (jao-notmuch-tree-hide-thread)
+      (while (notmuch-tree-next-thread-in-tree)
+        (jao-notmuch-tree-hide-thread)))
   (goto-char (point-min)))
 
 (defun jao-notmuch-tree-toggle-thread ()
@@ -345,13 +349,30 @@
     m))
 
 (defun jao-notmuch--tree-next (prev thread no-exit)
-  (save-excursion (jao-notmuch-tree-hide-thread))
-  (let ((line-move-ignore-invisible nil))
-    (when thread (notmuch-tree-next-thread prev))
-    (unless (jao-notmuch--looking-at-new-p)
-      (notmuch-tree-matching-message prev (not no-exit))))
-  (save-excursion (jao-notmuch-tree-show-thread))
-  (notmuch-tree-show-message nil)
+  (let ((line-move-ignore-invisible t))
+    (cond ((looking-at-p "^End of search results")
+           (unless no-exit
+             (notmuch-tree-close-message-window)
+             (notmuch-tree-quit)))
+          ((jao-notmuch--looking-at-new-p)
+           (save-excursion (jao-notmuch-tree-show-thread))
+           (notmuch-tree-show-message nil))
+          (thread
+           (save-excursion (jao-notmuch-tree-hide-thread))
+           (when (notmuch-tree-next-thread prev)
+             (save-excursion (jao-notmuch-tree-show-thread)))
+           (unless (jao-notmuch--looking-at-new-p)
+             (notmuch-tree-matching-message prev (not no-exit))))
+          ((or (and (not prev) (jao-notmuch--tree-bottom))
+               (and prev (jao-notmuch--tree-top)))
+           (save-excursion (jao-notmuch-tree-hide-thread))
+           (forward-line (if prev -1 1))
+           (jao-notmuch--tree-next prev nil no-exit))
+          ((notmuch-tree-get-message-id)
+           (save-excursion (jao-notmuch-tree-show-thread))
+           (notmuch-tree-matching-message prev (not no-exit)))))
+  (when (notmuch-tree-get-message-id)
+    (notmuch-tree-show-message nil))
   (jao-notmuch--tree-update-buffer-name))
 
 (defun jao-notmuch-tree-next (thread &optional no-exit)
@@ -364,6 +385,19 @@
   (interactive "P")
   (jao-notmuch--tree-next t thread t))
 
+
+;; Updating the tree window after insertion
+
+(defun jao-notmuch--tree-sentinel (proc &rest _)
+  (when (eq (process-status proc) 'exit)
+    (jao-notmuch--tree-update-buffer-name)
+    (jao-notmuch-tree-hide-all)))
+
+(defun jao-notmuch-tree-setup ()
+  "Activate final display of trees adjustments."
+  (advice-add 'notmuch-tree-process-sentinel :after #'jao-notmuch--tree-sentinel))
+
+
 ;; Tagging
 
 (defun jao-notmuch-tag-jump-and-next (reverse)
-- 
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