Add temporary status fields

Introduce the SetTemporaryStatus method in the terminal user interface
(tui) and use it to display the browser error message only temporary.

cmd/openqa-revtui/openqa-revtui.go

@@ -576,7 +576,8 @@ func tui_main(tui *TUI, instance *gopenqa.Instance) error {
 			if len(jobs) == 0 {
 				tui.SetStatus("No visible jobs")
 			} else if len(jobs) > 10 && key == 'o' {
-				tui.SetStatus("Refusing to open more than 10 job links. Use 'O' to override")
+				status := fmt.Sprintf("Refuse to open %d (>10) job links. Use 'O' to override", len(jobs))
+				tui.SetTemporaryStatus(status, 5)
 			} else {
 				if err := browserJobs(jobs); err != nil {
 					tui.SetStatus(fmt.Sprintf("error: %s", err))

cmd/openqa-revtui/tui.go

@@ -159,6 +159,23 @@ func (tui *TUI) SetStatus(status string) {
 	tui.status = status
 }
 
+func (tui *TUI) SetTemporaryStatus(status string, duration int) {
+	tui.Model.mutex.Lock()
+	old := tui.status
+	tui.status = status
+	tui.Model.mutex.Unlock()
+	tui.Update()
+
+	// Reset status text after waiting for duration. But only, if the status text has not been altered in the meantime
+	go func(old, status string, duration int) {
+		time.Sleep(time.Duration(duration) * time.Second)
+		if tui.status == status {
+			tui.status = old
+			tui.Update()
+		}
+	}(old, status, duration)
+}
+
 func (tui *TUI) Status() string {
 	return tui.status
 }