func updateMemCPU(gcpu, gmem *ui.Gauge) {
	done := make(chan struct{})
	memInfoChan, errc := daemon.TotalMemory(done, daemon.Delay)
	cpuInfoChan, errc := daemon.TotalCPU(done, daemon.Delay)
	timeout := time.After(2 * daemon.Delay)
	defer func() {
		close(done)
		// Necessary to read from error channel to prevent sending goroutine going into deadlock
		<-errc
	}()
	for {
		select {
		case memInfo := <-memInfoChan:
			pc := int(100 * (float64(memInfo.MemTotal-memInfo.MemFree) / float64(memInfo.MemTotal)))
			gmem.Percent = pc
			ui.Render(ui.Body)
		case cpuInfo := <-cpuInfoChan:
			pc := int(cpuInfo.AverageUtilization)
			gcpu.Percent = pc
			ui.Render(ui.Body)
		case err := <-errc:
			if err != nil {
			}
			return
		case <-timeout:
		}
	}
}

func addSparkLine(serviceName string, titles []string, color ui.Attribute) *ui.Sparklines {
	var sparkLines []ui.Sparkline
	for _, title := range titles {
		sparkLine := ui.NewSparkline()
		sparkLine.Height = 1
		sparkLine.Data = []int{}
		sparkLine.Title = title
		sparkLine.TitleColor = titleColor
		sparkLine.LineColor = color
		sparkLines = append(sparkLines, sparkLine)
	}
	sp := ui.NewSparklines(sparkLines...)
	sp.Height = 11
	sp.BorderLabel = serviceName

	ui.Body.AddRows(
		ui.NewRow(ui.NewCol(12, 0, sp)),
	)

	ui.Body.Align()
	ui.Render(sp)
	ui.Render(ui.Body)

	return sp
}

func SendBoxEvents(p *ui.Par) {

	ui.Handle("/sys/kbd/<enter>", func(e ui.Event) {
		Input <- p.Text
		p.Text = ""
		ui.Render(ui.Body)
	})

	ui.Handle("/sys/kbd/<space>", func(e ui.Event) {
		p.Text += " "
		ui.Render(ui.Body)
	})

	ui.Handle("/sys/kbd/C-8", func(e ui.Event) {
		if len(p.Text) > 0 {
			p.Text = p.Text[:len(p.Text)-1]
			ui.Render(ui.Body)
		}
	})

	ui.Handle("/sys/kbd", func(e ui.Event) {
		char := e.Data.(ui.EvtKbd).KeyStr
		p.Text += char
		ui.Render(ui.Body)
	})

}

func BuildUI() {
	ui.Init()
	defer ui.Close()

	receiveBox := CreateReceiveBox()
	sendBox := CreateSendBox()
	ui.Body.AddRows(
		ui.NewRow(ui.NewCol(12, 0, receiveBox)),
		ui.NewRow(ui.NewCol(12, 0, sendBox)),
	)

	ui.Body.Align()
	ui.Render(ui.Body)

	ui.Handle("/sys/kbd/C-x", func(e ui.Event) {
		ui.StopLoop()
	})

	ui.Handle("/timer/1s", func(e ui.Event) {
		ReceiveBoxHeight = ui.TermHeight() - SendBoxHeight
		receiveBox.Height = ReceiveBoxHeight
		ui.Body.Align()
		ui.Render(ui.Body)
	})

	// Leaving this commented out for now
	// I'd like to get this method of screen refreshing working instead of the 1s method,
	// but this crashes on resize.
	// ui.Handle("/sys/wnd/resize", func(e ui.Event) {
	//   ui.Body.Align()
	//   ui.Render(ui.Body)
	// })

	ui.Loop()
}

//doLiveGraph builds a graph in the terminal window that
//updates every graphUpdate seconds
//It will build up to maxGraphs graphs with one time-series
//per graph
func doLiveGraph(res *wavefront.QueryResponse, query *wavefront.Querying, period int64) {

	err := ui.Init()
	if err != nil {
		log.Fatal(err)
	}
	defer ui.Close()

	if maxGraphs > len(res.TimeSeries) {
		maxGraphs = len(res.TimeSeries)
	}

	var wDivisor, hDivisor int
	switch maxGraphs {
	case 1:
		wDivisor = 1
		hDivisor = 1
	case 2:
		wDivisor = 2
		hDivisor = 1
	case 3, 4:
		wDivisor = 2
		hDivisor = 2
	}

	height := ui.TermHeight() / hDivisor
	width := ui.TermWidth() / wDivisor
	xVals, yVals := calculateCoords(maxGraphs, ui.TermWidth()/wDivisor, ui.TermHeight()/hDivisor)
	graphs := buildGraphs(res, height, width, xVals, yVals)

	ui.Render(graphs...)
	ui.Handle("/sys/kbd/q", func(ui.Event) {
		// press q to quit
		ui.StopLoop()
	})

	ui.Handle("/sys/kbd/C-c", func(ui.Event) {
		// handle Ctrl + c combination
		ui.StopLoop()
	})

	ui.Handle("/timer/1s", func(e ui.Event) {
		query.SetEndTime(time.Now())
		query.SetStartTime(period)
		res, err := query.Execute()
		if err != nil {
			log.Fatal(err)
		}
		graphs := buildGraphs(res, height, width, xVals, yVals)
		ui.Render(graphs...)
	})

	ui.Loop()

}

func readMessage(message *imap.MessageInfo) {
	set := new(imap.SeqSet)
	set.AddNum(message.Seq)
	cmd, err := imap.Wait(c.Fetch(set, BODY_PART_NAME))
	panicMaybe(err)

	reader, err := messageReader(cmd.Data[0].MessageInfo())
	panicMaybe(err)

	scanner := bufio.NewScanner(reader)
	var lines []string
	for scanner.Scan() {
		lines = append(lines, scanner.Text())
	}
	messageBodyStr := strings.Join(lines[:min(len(lines), ui.TermHeight()-2)], "\n")

	if len(messageBodyStr) <= 0 {
		LOG.Printf("Message body was empty or could not be retrieved: +%v\n", err)
		return
	}

	msgBox := ui.NewPar(messageBodyStr)
	msgBox.Border.Label = "Reading Message"
	msgBox.Height = ui.TermHeight()
	msgBox.Width = ui.TermWidth()
	msgBox.Y = 0
	ui.Render(msgBox)

	topLineIndex := 0

	redraw := make(chan bool)

	for {
		select {
		case e := <-ui.EventCh():
			switch e.Key {
			case ui.KeyArrowDown:
				topLineIndex = max(0, min(
					len(lines)-msgBox.Height/2,
					topLineIndex+1))
				go func() { redraw <- true }()
			case ui.KeyArrowUp:
				topLineIndex = max(0, topLineIndex-1)
				go func() { redraw <- true }()
			case ui.KeyEsc:
				// back to "list messages"
				return
			}
		case <-redraw:
			messageBodyStr = strings.Join(lines[topLineIndex+1:], "\n")
			msgBox.Text = messageBodyStr
			ui.Render(msgBox)
		}
	}
}

func main() {
	// run as client
	if len(os.Args) > 1 {
		fmt.Print(debug.ConnectAndListen())
		return
	}

	// run as server
	go func() { panic(debug.ListenAndServe()) }()

	if err := termui.Init(); err != nil {
		panic(err)
	}
	defer termui.Close()

	//termui.UseTheme("helloworld")
	b := termui.NewBlock()
	b.Width = 20
	b.Height = 20
	b.Float = termui.AlignCenter
	b.BorderLabel = "[HELLO](fg-red,bg-white) [WORLD](fg-blue,bg-green)"

	termui.Render(b)

	termui.Handle("/sys", func(e termui.Event) {
		k, ok := e.Data.(termui.EvtKbd)
		debug.Logf("->%v\n", e)
		if ok && k.KeyStr == "q" {
			termui.StopLoop()
		}
	})

	termui.Handle(("/usr"), func(e termui.Event) {
		debug.Logf("->%v\n", e)
	})

	termui.Handle("/timer/1s", func(e termui.Event) {
		t := e.Data.(termui.EvtTimer)
		termui.SendCustomEvt("/usr/t", t.Count)

		if t.Count%2 == 0 {
			b.BorderLabel = "[HELLO](fg-red,bg-green) [WORLD](fg-blue,bg-white)"
		} else {
			b.BorderLabel = "[HELLO](fg-blue,bg-white) [WORLD](fg-red,bg-green)"
		}

		termui.Render(b)

	})

	termui.Loop()
}

func main() {
	if err := termui.Init(); err != nil {
		panic(err)
	}
	defer termui.Close()

	bc := termui.NewBarChart()
	data := []int{3, 2, 5, 3, 9, 5, 3, 2, 5, 8, 3, 2, 4, 5, 3, 2, 5, 7, 5, 3, 2, 6, 7, 4, 6, 3, 6, 7, 8, 3, 6, 4, 5, 3, 2, 4, 6, 4, 8, 5, 9, 4, 3, 6, 5, 3, 6}
	bclabels := []string{"S0", "S1", "S2", "S3", "S4", "S5"}
	bc.BorderLabel = "Bar Chart"
	bc.Data = data
	bc.Width = 26
	bc.Height = 10
	bc.DataLabels = bclabels
	bc.TextColor = termui.ColorGreen
	bc.BarColor = termui.ColorRed
	bc.NumColor = termui.ColorYellow

	termui.Render(bc)

	termui.Handle("/sys/kbd/q", func(termui.Event) {
		termui.StopLoop()
	})
	termui.Loop()

}

func main() {
	err := termui.Init()
	if err != nil {
		panic(err)
	}
	defer termui.Close()

	termui.UseTheme("helloworld")

	strs := []string{
		"[0] github.com/gizak/termui",
		"[1] 你好，世界",
		"[2] こんにちは世界",
		"[3] keyboard.go",
		"[4] output.go",
		"[5] random_out.go",
		"[6] dashboard.go",
		"[7] nsf/termbox-go"}

	ls := termui.NewList()
	ls.Items = strs
	ls.ItemFgColor = termui.ColorYellow
	ls.Border.Label = "List"
	ls.Height = 7
	ls.Width = 25
	ls.Y = 0

	termui.Render(ls)

	<-termui.EventCh()
}

// TransformSingleMemory transforms a single service's memory data into spark
// lines.
func (spark *SparkTransformer) TransformSingleMemory(metric *models.Metrics) {
	var memMin []int
	var memMax []int
	var memAvg []int
	var memTotal []int
	if metric.Data != nil && metric.Data.MemoryUsage != nil {
		for _, data := range *metric.Data.MemoryUsage {
			memMin = append(memMin, int(data.Min/1024.0))
			memMax = append(memMax, int(data.Max/1024.0))
			memAvg = append(memAvg, int(data.AVG/1024.0))
			memTotal = append(memTotal, int(metric.Size.RAM*1024.0))
		}
	}
	var sparkLines = spark.SparkLines[metric.ServiceLabel]
	if sparkLines == nil {
		sparkLines = addSparkLine(metric.ServiceLabel, []string{"Mem Min", "Mem Max", "Mem AVG", "Mem Total"}, memoryColor)
		spark.SparkLines[metric.ServiceLabel] = sparkLines
	}
	for i := range sparkLines.Lines {
		if sparkLines.Lines[i].Title == "Mem Min" {
			sparkLines.Lines[i].Data = memMin
		} else if sparkLines.Lines[i].Title == "Mem Max" {
			sparkLines.Lines[i].Data = memMax
		} else if sparkLines.Lines[i].Title == "Mem AVG" {
			sparkLines.Lines[i].Data = memAvg
		} else if sparkLines.Lines[i].Title == "Mem Total" {
			sparkLines.Lines[i].Data = memTotal
		}
	}
	ui.Render(ui.Body)
}

func main() {

	err := ui.Init()
	if err != nil {
		panic(err)
	}
	defer ui.Close()

	p := ui.NewPar("Press q to QUIT THE DEMO. [There](fg-blue) are other things [that](fg-red) are going to fit in here I think. What do you think? Now is the time for all good [men to](bg-blue) come to the aid of their country. [This is going to be one really really really long line](fg-green) that is going to go together and stuffs and things. Let's see how this thing renders out.\n    Here is a new paragraph and stuffs and things. There should be a tab indent at the beginning of the paragraph. Let's see if that worked as well.")
	p.WrapLength = 48 // this should be at least p.Width - 2
	p.Height = 20
	p.Width = 50
	p.Y = 2
	p.X = 20
	p.TextFgColor = ui.ColorWhite
	p.BorderLabel = "Text Box with Wrapping"
	p.BorderFg = ui.ColorCyan
	//p.Border = false

	ui.Render(p)

	ui.Handle("/sys/kbd/q", func(ui.Event) {
		ui.StopLoop()
	})

	ui.Loop()
}

func main() {
	err := ui.Init()
	if err != nil {
		panic(err)
	}
	defer ui.Close()

	p := ui.NewPar(":PRESS q TO QUIT DEMO")
	p.Height = 3
	p.Width = 50
	p.TextFgColor = ui.ColorWhite
	p.BorderLabel = "Text Box"
	p.BorderFg = ui.ColorCyan

	g := ui.NewGauge()
	g.Percent = 50
	g.Width = 50
	g.Height = 3
	g.Y = 11
	g.BorderLabel = "Gauge"
	g.BarColor = ui.ColorRed
	g.BorderFg = ui.ColorWhite
	g.BorderLabelFg = ui.ColorCyan

	ui.Render(p, g) // feel free to call Render, it's async and non-block
}

func main() {
	err := termui.Init()
	if err != nil {
		panic(err)
	}
	defer termui.Close()

	//termui.UseTheme("helloworld")

	strs := []string{
		"[0] github.com/gizak/termui",
		"[1] [你好，世界](fg-blue)",
		"[2] [こんにちは世界](fg-red)",
		"[3] [color output](fg-white,bg-green)",
		"[4] output.go",
		"[5] random_out.go",
		"[6] dashboard.go",
		"[7] nsf/termbox-go"}

	ls := termui.NewList()
	ls.Items = strs
	ls.ItemFgColor = termui.ColorYellow
	ls.BorderLabel = "List"
	ls.Height = 7
	ls.Width = 25
	ls.Y = 0

	termui.Render(ls)
	termui.Handle("/sys/kbd/q", func(termui.Event) {
		termui.StopLoop()
	})
	termui.Loop()

}

func (m *Monitor) Start(conn *net.Conn) {
	if err := ui.Init(); err != nil {
		panic(err)
	}
	defer ui.Close()

	help := ui.NewPar(":PRESS q TO QUIT")
	help.Height = 3
	help.Width = 50
	help.TextFgColor = ui.ColorWhite
	help.BorderLabel = "Help"
	help.BorderFg = ui.ColorCyan

	// build
	ui.Body.AddRows(
		ui.NewRow(
			ui.NewCol(6, 0, help),
		),
	)

	draw := func(t int) {
		ui.Body.Align()
		ui.Render(ui.Body)
	}

	draw(0)
	ui.Handle("/sys/kbd/q", func(ui.Event) {
		ui.StopLoop()
	})
	ui.Handle("/timer/1s", func(e ui.Event) {
		t := e.Data.(ui.EvtTimer)
		draw(int(t.Count))
	})
	ui.Loop()
}

func main() {
	err := termui.Init()
	if err != nil {
		panic(err)
	}
	defer termui.Close()

	termui.UseTheme("helloworld")

	bc := termui.NewBarChart()
	data := []int{3, 2, 5, 3, 9, 5, 3, 2, 5, 8, 3, 2, 4, 5, 3, 2, 5, 7, 5, 3, 2, 6, 7, 4, 6, 3, 6, 7, 8, 3, 6, 4, 5, 3, 2, 4, 6, 4, 8, 5, 9, 4, 3, 6, 5, 3, 6}
	bclabels := []string{"S0", "S1", "S2", "S3", "S4", "S5"}
	bc.Border.Label = "Bar Chart"
	bc.Data = data
	bc.Width = 26
	bc.Height = 10
	bc.DataLabels = bclabels
	bc.TextColor = termui.ColorGreen
	bc.BarColor = termui.ColorRed
	bc.NumColor = termui.ColorYellow

	termui.Render(bc)

	<-termui.EventCh()
}

func main() {

	err := ui.Init()
	if err != nil {
		panic(err)
	}
	defer ui.Close()

	w11 := ui.NewPar("Hello world")
	w11.Height = 10
	w11.Border.Label = "Hello"
	w11.Border.LabelFgColor = ui.ColorGreen

	w12 := ui.NewPar("first")
	w12.Height = 20

	w2 := ui.NewPar("second")
	w2.Height = 20

	ui.Body.AddRows(
		ui.NewRow(
			ui.NewCol(6, 0, w11),
			ui.NewCol(6, 0, w12)),
		ui.NewRow(
			ui.NewCol(12, 0, w2)))

	ui.Body.Align()

	ui.Render(ui.Body)

	<-ui.EventCh()

}

func (wr *widgetRenderer) Render() {
	var jobs []termui.Bufferer
	for _, j := range wr.jobs {
		jobs = append(jobs, j)
	}
	termui.Render(jobs...)
}

func main() {
	err := termui.Init()
	if err != nil {
		panic(err)
	}
	defer termui.Close()

	//termui.UseTheme("helloworld")

	data := []int{4, 2, 1, 6, 3, 9, 1, 4, 2, 15, 14, 9, 8, 6, 10, 13, 15, 12, 10, 5, 3, 6, 1, 7, 10, 10, 14, 13, 6}
	spl0 := termui.NewSparkline()
	spl0.Data = data[3:]
	spl0.Title = "Sparkline 0"
	spl0.LineColor = termui.ColorGreen

	// single
	spls0 := termui.NewSparklines(spl0)
	spls0.Height = 2
	spls0.Width = 20
	spls0.Border = false

	spl1 := termui.NewSparkline()
	spl1.Data = data
	spl1.Title = "Sparkline 1"
	spl1.LineColor = termui.ColorRed

	spl2 := termui.NewSparkline()
	spl2.Data = data[5:]
	spl2.Title = "Sparkline 2"
	spl2.LineColor = termui.ColorMagenta

	// group
	spls1 := termui.NewSparklines(spl0, spl1, spl2)
	spls1.Height = 8
	spls1.Width = 20
	spls1.Y = 3
	spls1.BorderLabel = "Group Sparklines"

	spl3 := termui.NewSparkline()
	spl3.Data = data
	spl3.Title = "Enlarged Sparkline"
	spl3.Height = 8
	spl3.LineColor = termui.ColorYellow

	spls2 := termui.NewSparklines(spl3)
	spls2.Height = 11
	spls2.Width = 30
	spls2.BorderFg = termui.ColorCyan
	spls2.X = 21
	spls2.BorderLabel = "Tweeked Sparkline"

	termui.Render(spls0, spls1, spls2)

	termui.Handle("/sys/kbd/q", func(termui.Event) {
		termui.StopLoop()
	})
	termui.Loop()

}

func updateUptime(p *ui.Par) {
	for {
		<-time.After(2 * daemon.Delay)
		ut, _ := daemon.Uptime()
		p.Text = ut.String()
		ui.Render(ui.Body)
	}
}

func (p *LabelListPage) Update() {
	ls := p.uiList
	p.markActiveLine()
	ls.Items = p.displayLines[p.firstDisplayLine:]
	ui.Render(ls)
	p.statusBar.Update()
	p.commandBar.Update()
}