ui: add select-last-message option

Add a [ui].select-last-message option to position the cursor at the
bottom of the message list view.

Fixes: https://todo.sr.ht/~rjarry/aerc/254
Changelog-added: Add `[ui].select-last-message` option to position
 cursor at the bottom of the view.
Suggested-by: Bence Ferdinandy <bence@ferdinandy.com>
Requested-by: Tomasz Kramkowski <tomasz@kramkow.ski>
Signed-off-by: Koni Marti <koni.marti@gmail.com>
Tested-by: Tomasz Kramkowski <tomasz@kramkow.ski>
Acked-by: Robin Jarry <robin@jarry.cc>

5 files changed, 22 insertions, 1 deletions

diff --git a/app/account.go b/app/account.go
index ab5793bc..07c6801d 100644
--- a/app/account.go
+++ b/app/account.go
@@ -247,6 +247,7 @@ func (acct *AccountView) newStore(name string) *lib.MessageStore {
 		uiConf.ThreadingEnabled,
 		uiConf.ForceClientThreads,
 		uiConf.ClientThreadsDelay,
+		uiConf.SelectLast,
 		uiConf.ReverseOrder,
 		uiConf.ReverseThreadOrder,
 		uiConf.SortThreadSiblings,
diff --git a/config/aerc.conf b/config/aerc.conf
index ccfbe748..a7d763d7 100644
--- a/config/aerc.conf
+++ b/config/aerc.conf
@@ -371,6 +371,12 @@
 # Default: false
 #reverse-thread-order=false
 
+# Positions the cursor on the last message in the message list (at the
+# bottom of the view) when opening a new folder.
+#
+# Default: false
+#select-last-message=false
+
 # Sort the thread siblings according to the sort criteria for the messages. If
 # sort-thread-siblings is false, the thread siblings will be sorted based on
 # the message UID in ascending order. This option is only applicable for
diff --git a/config/ui.go b/config/ui.go
index 7da365d6..7c7f1869 100644
--- a/config/ui.go
+++ b/config/ui.go
@@ -80,6 +80,7 @@ type UIConfig struct {
 	BorderCharVertical   rune `ini:"border-char-vertical" default:"│" type:"rune"`
 	BorderCharHorizontal rune `ini:"border-char-horizontal" default:"─" type:"rune"`
 
+	SelectLast         bool `ini:"select-last-message" default:"false"`
 	ReverseOrder       bool `ini:"reverse-msglist-order"`
 	ReverseThreadOrder bool `ini:"reverse-thread-order"`
 	SortThreadSiblings bool `ini:"sort-thread-siblings"`
diff --git a/doc/aerc-config.5.scd b/doc/aerc-config.5.scd
index c8c7604c..17cea5ff 100644
--- a/doc/aerc-config.5.scd
+++ b/doc/aerc-config.5.scd
@@ -469,6 +469,12 @@ These options are configured in the *[ui]* section of _aerc.conf_.
 
 	Default: _false_
 
+*select-last-message* = _true_|_false_
+	Positions the cursor on the last message in the message list (at the
+	bottom of the view) when opening a new folder.
+
+	Default: _false_
+
 *sort-thread-siblings* = _true_|_false_
 	Sort the thread siblings according to the sort criteria for the messages. If
 	sort-thread-siblings is false, the thread siblings will be sorted based on
diff --git a/lib/msgstore.go b/lib/msgstore.go
index 8f626eb8..b4790735 100644
--- a/lib/msgstore.go
+++ b/lib/msgstore.go
@@ -48,6 +48,7 @@ type MessageStore struct {
 	sortDefault  []*types.SortCriterion
 
 	threadedView       bool
+	selectLast         bool
 	reverseThreadOrder bool
 	threadContext      bool
 	sortThreadSiblings bool
@@ -89,6 +90,7 @@ const MagicUid = 0xFFFFFFFF
 func NewMessageStore(worker *types.Worker,
 	defaultSortCriteria []*types.SortCriterion,
 	thread bool, clientThreads bool, clientThreadsDelay time.Duration,
+	selectLast bool,
 	reverseOrder bool, reverseThreadOrder bool, sortThreadSiblings bool,
 	triggerNewEmail func(*models.MessageInfo),
 	triggerDirectoryChange func(), triggerMailDeleted func(),
@@ -116,6 +118,7 @@ func NewMessageStore(worker *types.Worker,
 		threadedView:       thread,
 		buildThreads:       clientThreads,
 		threadContext:      threadContext,
+		selectLast:         selectLast,
 		reverseThreadOrder: reverseThreadOrder,
 		sortThreadSiblings: sortThreadSiblings,
 
@@ -745,7 +748,11 @@ func (store *MessageStore) Selected() *models.MessageInfo {
 func (store *MessageStore) SelectedUid() uint32 {
 	if store.selectedUid == MagicUid && len(store.Uids()) > 0 {
 		iter := store.UidsIterator()
-		store.Select(store.Uids()[iter.StartIndex()])
+		idx := iter.StartIndex()
+		if store.selectLast {
+			idx = iter.EndIndex()
+		}
+		store.Select(store.Uids()[idx])
 	}
 	return store.selectedUid
 }