templates: add visual mode indicator to TrayInfo

It's useful to have some indicator of whether or not aerc is in visual
mark mode. Add such an indicator to the TrayInfo available in the status
line.

Changelog-changed: The `TrayInfo` template variable now includes a
 visual mark mode indicator.
Signed-off-by: Jason Cox <me@jasoncarloscox.com>
Acked-by: Robin Jarry <robin@jarry.cc>

2 files changed, 18 insertions, 0 deletions

diff --git a/lib/state/templates.go b/lib/state/templates.go
index e1570cd3..37767660 100644
--- a/lib/state/templates.go
+++ b/lib/state/templates.go
@@ -27,6 +27,7 @@ type DataSetter interface {
 	Data() models.TemplateData
 	SetHeaders(*mail.Header, *models.OriginalMail)
 	SetInfo(*models.MessageInfo, int, bool)
+	SetVisual(bool)
 	SetThreading(string, bool, int, int, bool, bool)
 	SetComposer(Composer)
 	SetAccount(*config.AccountConfig)
@@ -54,6 +55,7 @@ type templateData struct {
 	info   *models.MessageInfo
 	marked bool
 	msgNum int
+	visual bool
 
 	// message list threading
 	threadInfo ThreadInfo
@@ -94,6 +96,10 @@ func (d *templateData) SetInfo(info *models.MessageInfo, num int, marked bool,
 	d.marked = marked
 }
 
+func (d *templateData) SetVisual(visual bool) {
+	d.visual = visual
+}
+
 func (d *templateData) SetThreading(prefix string, same bool, count int,
 	unread int, folded bool, context bool,
 ) {
@@ -624,6 +630,9 @@ func (d *templateData) TrayInfo() string {
 	if d.state.passthrough {
 		tray = append(tray, texter().Passthrough())
 	}
+	if d.visual {
+		tray = append(tray, texter().Visual())
+	}
 	return strings.Join(tray, config.Statusline.Separator)
 }
 
diff --git a/lib/state/texter.go b/lib/state/texter.go
index 9212108d..f51d4d33 100644
--- a/lib/state/texter.go
+++ b/lib/state/texter.go
@@ -12,6 +12,7 @@ type texterInterface interface {
 	Passthrough() string
 	Sorting() string
 	Threading() string
+	Visual() string
 	FormatFilter(string) string
 	FormatSearch(string) string
 }
@@ -40,6 +41,10 @@ func (t text) Threading() string {
 	return "threading"
 }
 
+func (t text) Visual() string {
+	return "visual"
+}
+
 func (t text) FormatFilter(s string) string {
 	return s
 }
@@ -72,6 +77,10 @@ func (i icon) Threading() string {
 	return "🧵"
 }
 
+func (i icon) Visual() string {
+	return "🕶"
+}
+
 func (i icon) FormatFilter(s string) string {
 	return strings.ReplaceAll(s, "filter", "🔦")
 }