refactor connectors for retry logic, add error view

widgets/error.go

@@ -0,0 +1,38 @@
+package widgets
+
+import (
+	"fmt"
+	ui "github.com/gizak/termui"
+)
+
+type ErrorView struct {
+	*ui.Par
+}
+
+func NewErrorView() *ErrorView {
+	p := ui.NewPar("")
+	p.Border = true
+	p.Height = 10
+	p.Width = 20
+	p.PaddingTop = 1
+	p.PaddingBottom = 1
+	p.PaddingLeft = 2
+	p.PaddingRight = 2
+	p.Bg = ui.ThemeAttr("bg")
+	p.TextFgColor = ui.ThemeAttr("status.warn")
+	p.TextBgColor = ui.ThemeAttr("menu.text.bg")
+	p.BorderFg = ui.ThemeAttr("status.warn")
+	p.BorderLabelFg = ui.ThemeAttr("status.warn")
+	return &ErrorView{p}
+}
+
+func (w *ErrorView) Buffer() ui.Buffer {
+	w.BorderLabel = fmt.Sprintf(" %s ", timeStr())
+	return w.Par.Buffer()
+}
+
+func (w *ErrorView) Resize() {
+	w.SetX(ui.TermWidth() / 12)
+	w.SetY(ui.TermHeight() / 3)
+	w.SetWidth(w.X * 10)
+}