102 lines
2.1 KiB
Go
102 lines
2.1 KiB
Go
package main
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import (
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"fmt"
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"log"
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"strings"
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"github.com/jroimartin/gocui"
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)
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func GenRenderFunc(g *gocui.Gui, sc *StateController) func() {
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return func() {
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ps := sc.State.GetData()
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renderPeerList(g, ps.Peers)
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renderPeerInfo(g, sc.State.GetCurrent())
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updatePeerCursor(g, ps.Current)
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}
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}
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func renderPeerList(g *gocui.Gui, peers []Peer) {
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g.Update(func(g *gocui.Gui) error {
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v, err := g.View("main")
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if err != nil {
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return err
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}
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v.Clear()
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if len(peers) == 0 {
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fmt.Fprintf(v, "No peers found.\n")
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return nil
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}
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maxWidth, _ := g.Size()
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for _, peer := range peers {
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fmt.Fprintf(v, "%s\n", peer.AsTable(maxWidth))
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}
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return nil
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})
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}
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func renderPeerInfo(g *gocui.Gui, peer *Peer) {
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g.Update(func(g *gocui.Gui) error {
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v, err := g.View("info")
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if err != nil {
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return err
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}
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v.Clear()
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if peer == nil {
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fmt.Fprintf(v, "No peer selected.")
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return nil
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}
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fmt.Fprintf(v, strings.Repeat("%-8s: %v\n", 8),
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"Name", peer.Name,
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"ID", string(peer.ID),
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"Enode", peer.Enode,
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"Static", peer.Network.Static,
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"Trusted", peer.Network.Trusted,
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"Local", peer.Network.LocalAddress,
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"Remote", peer.Network.RemoteAddress,
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"Caps", strings.Join(peer.Caps, ", "))
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return nil
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})
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}
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func updatePeerCursor(g *gocui.Gui, current int) {
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// no need to move cursor if nothing is selected
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if current < 0 {
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return
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}
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v, err := g.View("main")
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if err != nil {
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log.Panicln("unable to find main view")
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}
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cx, _ := v.Cursor()
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if err := v.SetCursor(cx, current); err != nil {
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ox, _ := v.Origin()
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if err := v.SetOrigin(ox, current); err != nil {
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log.Panicln("unable to scroll:", err)
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}
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}
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}
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func (p Peer) AsTable(maxWidth int) string {
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var id string
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if maxWidth > 160 {
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id = string(p.ID)
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} else {
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id = p.ID.String()
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}
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return fmt.Sprintf("%s ｜ %-15s ｜ %-21s ｜ %-7s ｜ %-8s",
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id, p.Name,
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p.Network.RemoteAddress,
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boolToString(p.Network.Trusted, "trusted", "normal"),
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boolToString(p.Network.Static, "static", "dynamic"))
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}
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func boolToString(v bool, yes string, no string) string {
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if v {
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return yes
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} else {
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return no
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}
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}
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