wit-debian-gui/window-resolv.go

package main

import (
	"bufio"
	"errors"
	"os"
	"strings"

	"go.wit.com/gui"
	"go.wit.com/lib/gadgets"
	"go.wit.com/log"
)

var filename string = "resolv-1-1-1-1.conf"
var generaloutput *gui.Node

var resWin *gadgets.BasicWindow

func resolvWindow() {
	if resWin != nil {
		resWin.Toggle()
		return
	}
	resWin = gadgets.NewBasicWindow(myGui, "resolv.conf Window")

	//////////////   filename    /////////////////////////
	gNode := resWin.Box().NewGroup("filename")

	var tmp []string
	for i, s := range packrBox.List() {
		log.Println("i, s =", i, s)
		if strings.HasPrefix(s, "resolv/") {
			tmp = append(tmp, s)
		}
	}
	// panic("junk")

	resolvNode := gNode.NewCombobox("test")
	for _, thing := range tmp {
		resolvNode.AddText(thing)
	}

	resolvNode.SetText(filename)
	resolvNode.Custom = func() {
		log.Println("STARTED HOSTNAME")
		filename = resolvNode.GetText()
		b, _ := packrBox.FindString(filename)
		if generaloutput != nil {
			generaloutput.SetText(b)
		}
		log.Println("ENDED GetText() HOSTNAME =", filename)
	}

	//////////////   connect     /////////////////////////
	gNode = resWin.Box().NewGroup("")

	gNode.NewButton("Update /etc/resolv.conf", func() {
		sudo(func() error {
			log.Println("set resolv.conf to", filename)
			b, _ := packrBox.FindString(filename)
			// spew.Dump(b)
			b = generaloutput.GetText()

			log.Println("Setting /etc/resolv.conf to:\n\n" + b)

			f, err := os.Create("/etc/resolv.conf")
			if err != nil {
				return errors.New("os.Create() /etc/resolv.conf failed")
			}
			defer f.Close()
			w := bufio.NewWriter(f)
			n4, err := w.WriteString(b)
			log.Println("n4 =", n4)
			w.Flush()
			return nil
		})
	})
	gNode.NewButton("test ping ipv4", func() {
		bash("ping -c 3 -4 google.com")
	})
	gNode.NewButton("test ping ipv6", func() {
		bash("ping -c 3 -6 google.com")
	})

	gNode.NewButton("set output", func() {
		if generaloutput != nil {
			generaloutput.SetText("wow")
			generaloutput.Margin()
		}
	})

	gNode = resWin.Box().NewGroup("Update")
	gNode.NewButton("MakeGroupEdit()", func() {
		log.Warn("recreate a gadget for editing the resolv.conf")
		//generaloutput = gNode.MakeGroupEdit("resolv.conf:")
	})
}