Refactored StatusBar - changed into a type, other small fixes

app/status_bar.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"time"
+
+	"github.com/rivo/tview"
+)
+
+type StatusBar struct {
+	*tview.Pages
+	message   *tview.TextView
+	container *tview.Application
+}
+
+// Name of page keys
+const (
+	defaultPage = "default"
+	messagePage = "message"
+)
+
+func makeStatusBar(app *tview.Application) *StatusBar {
+	statusBar := StatusBar{
+		Pages:     tview.NewPages(),
+		message:   tview.NewTextView().SetDynamicColors(true).SetText("Loading..."),
+		container: app,
+	}
+
+	statusBar.AddPage(messagePage, statusBar.message, true, true)
+	statusBar.AddPage(defaultPage,
+		tview.NewGrid(). // Content will not be modified, So, no need to declare explicitly
+					SetColumns(0, 0, 0, 0).
+					SetRows(0).
+					AddItem(tview.NewTextView().SetText("Navigate List: ↓/↑"), 0, 0, 1, 1, 0, 0, false).
+					AddItem(tview.NewTextView().SetText("New Task/Project: n").SetTextAlign(tview.AlignCenter), 0, 1, 1, 1, 0, 0, false).
+					AddItem(tview.NewTextView().SetText("Step back: Esc").SetTextAlign(tview.AlignCenter), 0, 2, 1, 1, 0, 0, false).
+					AddItem(tview.NewTextView().SetText("Quit: Ctrl+C").SetTextAlign(tview.AlignRight), 0, 3, 1, 1, 0, 0, false),
+		true,
+		true,
+	)
+
+	return &statusBar
+}
+
+func (bar *StatusBar) showForSeconds(message string, timeout int) {
+	if bar.container == nil {
+		return
+	}
+
+	bar.message.SetText(message)
+	bar.SwitchToPage(messagePage)
+
+	go func() {
+		time.Sleep(time.Second * time.Duration(timeout))
+		bar.container.QueueUpdateDraw(func() {
+			bar.SwitchToPage(defaultPage)
+		})
+	}()
+}