implement peer removal without prompt

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

client.go

@@ -24,3 +24,12 @@ func (c *client) getPeers() ([]Peer, error) {
 	}
 	return peers, nil
 }
+
+func (c *client) removePeer(enode string) (bool, error) {
+	var rval bool
+	err := c.rpcClient.Call(&rval, "admin_removePeer", enode)
+	if err != nil {
+		return false, err
+	}
+	return rval, nil
+}

keys.go

@@ -44,3 +44,9 @@ func MoveCursor(mod int, vc *ViewController, g *gocui.Gui, v *gocui.View) error
 	}
 	return nil
 }
+
+func (vc *ViewController) HandleDelete(g *gocui.Gui, v *gocui.View) error {
+	ps := vc.State.(*PeersState)
+	selectedPeer := ps.selected
+	rval := ps.Remove(*selectedPeer)
+}

main.go

@@ -52,6 +52,8 @@ func main() {
 		Binding{gocui.KeyArrowDown, gocui.ModNone, mainView.CursorDown},
 		Binding{'k', gocui.ModNone, mainView.CursorUp},
 		Binding{'j', gocui.ModNone, mainView.CursorDown},
+		Binding{gocui.KeyDelete, gocui.ModNone, mainView.HandleDelete},
+		Binding{'d', gocui.ModNone, mainView.HandleDelete},
 	}
 	infoView := &ViewController{
 		Name:        "info",
@@ -60,7 +62,7 @@ func main() {
 		Enabled:     true,
 		Wrap:        true,
 		// corner positions
-		TopLeft:  func(mx, my int) (int, int) { return 0, my/2 + 1 },
+		TopLeft:  func(mx, my int) (int, int) { return 0, (my / 2) + 1 },
 		BotRight: func(mx, my int) (int, int) { return mx - 1, my - 1 },
 	}
 

peers.go

@@ -64,6 +64,14 @@ func writePeers(g *gocui.Gui, peers []Peer) {
 	})
 }
 
+func (p *PeersState) Remove(peer Peer) error {
+	success, err := p.c.removePeer(peer.Enode)
+	if err != nil || success != true {
+		log.Panicln(err)
+	}
+	return nil
+}
+
 func writePeerDetails(g *gocui.Gui, peer *Peer) {
 	g.Update(func(g *gocui.Gui) error {
 		v, err := g.View("info")

view.go

@@ -42,6 +42,7 @@ func (m *ViewManager) Layout(g *gocui.Gui) error {
 		x1, y1 := cfg.BotRight(mx, my)
 
 		v, err := g.SetView(cfg.Name, x0, y0, x1, y1)
+
 		// Some settings can be set only once
 		if err == gocui.ErrUnknownView {
 			cfg.SetKeybindings(g)
@@ -54,6 +55,7 @@ func (m *ViewManager) Layout(g *gocui.Gui) error {
 		} else if err != nil {
 			log.Panicln(err)
 		}
+
 		v.Title = cfg.Title
 		v.Wrap = cfg.Wrap
 		v.SelFgColor = cfg.SelFgColor