add bindings for refreshing the peers view

Signed-off-by: Jakub Sokołowski <jakub@status.im>

main.go

@@ -12,7 +12,7 @@ type rcpResp map[string]interface{}
 
 const host = "127.0.0.1"
 const port = 8545
-const interval = 5
+const interval = 3
 
 var threadDone = make(chan struct{})
 
@@ -71,6 +71,8 @@ func main() {
 		Binding{gocui.KeyCtrlC, gocui.ModNone, quit},
 		Binding{gocui.KeyArrowUp, gocui.ModNone, mainView.CursorUp},
 		Binding{gocui.KeyArrowDown, gocui.ModNone, mainView.CursorDown},
+		Binding{'r', gocui.ModNone, mainView.Refresh},
+		Binding{gocui.KeyCtrlL, gocui.ModNone, mainView.Refresh},
 		Binding{'k', gocui.ModNone, mainView.CursorUp},
 		Binding{'j', gocui.ModNone, mainView.CursorDown},
 		Binding{gocui.KeyDelete, gocui.ModNone, mainView.HandleDelete},

render.go

@@ -68,7 +68,7 @@ func updatePeerCursor(g *gocui.Gui, current int) {
 	if err := v.SetCursor(cx, current); err != nil {
 		ox, _ := v.Origin()
 		if err := v.SetOrigin(ox, current); err != nil {
-			log.Panicln("unable to scroll")
+			log.Panicln("unable to scroll:", err)
 		}
 	}
 }

view.go

@@ -91,6 +91,12 @@ func (v *ViewController) SetKeybindings(g *gocui.Gui) error {
 	return nil
 }
 
+func (vc *ViewController) Refresh(g *gocui.Gui, v *gocui.View) error {
+	// TODO propper error handling?
+	vc.StateCtrl.Fetch()
+	return nil
+}
+
 func (vc *ViewController) CursorUp(g *gocui.Gui, v *gocui.View) error {
 	// TODO propper error handling?
 	current := vc.StateCtrl.State.GetData().Current