terminal: properly handle cursor display

The terminal widget reports if the cursor should be displayed. Properly
handle this output to report cursor display back to aerc.

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

widgets/terminal.go

@@ -16,7 +16,6 @@ type Terminal struct {
 	closed    bool
 	cmd       *exec.Cmd
 	ctx       *ui.Context
-	cursorShown bool
 	destroyed bool
 	focus     bool
 	vterm     *tcellterm.Terminal
@@ -30,10 +29,9 @@ type Terminal struct {
 
 func NewTerminal(cmd *exec.Cmd) (*Terminal, error) {
 	term := &Terminal{
-		cursorShown: true,
+		cmd:   cmd,
+		vterm: tcellterm.New(),
 	}
-	term.cmd = cmd
-	term.vterm = tcellterm.New()
 	return term, nil
 }
 
@@ -98,12 +96,12 @@ func (term *Terminal) Draw(ctx *ui.Context) {
 func (term *Terminal) draw() {
 	term.vterm.Draw()
 	if term.focus && !term.closed && term.ctx != nil {
-		if !term.cursorShown {
-			term.ctx.HideCursor()
-		} else {
-			_, x, y, style := term.vterm.GetCursor()
+		vis, x, y, style := term.vterm.GetCursor()
+		if vis {
 			term.ctx.SetCursor(x, y)
 			term.ctx.SetCursorStyle(style)
+		} else {
+			term.ctx.HideCursor()
 		}
 	}
 }