golang-exercises/tui-test/main.go

package main

import (
	"fmt"
	"log"
	//"time"

	"github.com/jroimartin/gocui"
	//"github.com/nsf/termbox-go"
)

var input chan string

func main() {
	g, err := gocui.NewGui(gocui.OutputNormal)
	if err != nil {
		log.Panicln(err)
	}
	defer g.Close()
	g.SetManagerFunc(layout)
	g.Mouse = true
	g.Cursor = true
	initKeybindings(g)

	if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
		log.Panicln(err)
	}
}

func quit(*gocui.Gui, *gocui.View) error {
	return gocui.ErrQuit
}

func sendmsg(g *gocui.Gui, v *gocui.View) error {
	v.Clear()
	v.SetCursor(0, 0)
	return nil
}

func initKeybindings(g *gocui.Gui) error {
	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
		log.Panicln(err)
	}

	if err := g.SetKeybinding("button", gocui.MouseLeft, gocui.ModNone, sendmsg); err != nil {
		log.Panicln(err)
	}

	if err := g.SetKeybinding("button", gocui.MouseLeft, gocui.ModNone,
		func(g *gocui.Gui, v *gocui.View) error {
			texter, err := g.View("chatbox")
			if err != nil {
				log.Panicln(err)
			}
			fmt.Fprintln(texter, "wow")
			return nil
		}); err != nil {
		return err
	}

	if err := g.SetKeybinding("textarea", gocui.KeyEnter, gocui.ModNone, sendmsg); err != nil {
		log.Panicln(err)
	}
	return nil
}

func layout(g *gocui.Gui) error {
	maxX, maxY := g.Size()

	if chatbox, err := g.SetView("chatbox", 2, 1, maxX/2+40, maxY/2+6); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		fmt.Fprintln(chatbox, "Hello!")
	}

	if button, err := g.SetView("button", maxX/2+32, maxY/2+9, maxX/2+40, maxY/2+11); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		//button.BgColor = gocui.ColorRed
		button.Wrap = true
		button.Frame = true
		fmt.Fprintln(button, "Send it")
	}

	if textarea, err := g.SetView("textarea", 2, maxY/2+9, maxX/2+25, maxY/2+11); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		if _, err := g.SetCurrentView("textarea"); err != nil {
			log.Panicln(err)
		}
		textarea.Title = "Send message"
		textarea.Wrap = true
		textarea.Editable = true

	}

	return nil
}