statusline: add column based render format

In the spirit of commit 535300cfdbfc ("config: add columns based index
format"), reuse the column definitions and table widget.

Add automatic translation of render-format to column definitions. Allow
empty columns to be compatible with the %m (mute) flag.

Rename the State object to AccountState to be more precise. Reuse that
object in state.TempateData to expose account state info. Move actual
status line rendering in StatusLine.Draw().

Add new template fields for status specific data:

{{.ConnectionInfo}}
	Connection state.
{{.ContentInfo}}
	General status information (e.g. filter, search)
{{.StatusInfo}}
	Combination of {{.ConnectionInfo}} and {{.StatusInfo}}
{{.TrayInfo}}
	General on/off information (e.g. passthrough, threading,
	sorting)
{{.PendingKeys}}
	Currently pressed key sequence that does not match any key
	binding and/or is incomplete.

Display a warning on startup if render-format has been converted to
status-columns.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>

1 files changed, 19 insertions, 2 deletions

diff --git a/lib/state/texter.go b/lib/state/texter.go
index 21cf3627..9212108d 100644
--- a/lib/state/texter.go
+++ b/lib/state/texter.go
@@ -1,8 +1,12 @@
 package state
 
-import "strings"
+import (
+	"strings"
 
-type Texter interface {
+	"git.sr.ht/~rjarry/aerc/config"
+)
+
+type texterInterface interface {
 	Connected() string
 	Disconnected() string
 	Passthrough() string
@@ -14,6 +18,8 @@ type Texter interface {
 
 type text struct{}
 
+var txt text
+
 func (t text) Connected() string {
 	return "Connected"
 }
@@ -44,6 +50,8 @@ func (t text) FormatSearch(s string) string {
 
 type icon struct{}
 
+var icn icon
+
 func (i icon) Connected() string {
 	return "✓"
 }
@@ -71,3 +79,12 @@ func (i icon) FormatFilter(s string) string {
 func (i icon) FormatSearch(s string) string {
 	return strings.ReplaceAll(s, "search", "🔎")
 }
+
+func texter() texterInterface {
+	switch strings.ToLower(config.Statusline.DisplayMode) {
+	case "icon":
+		return &icn
+	default:
+		return &txt
+	}
+}