refactor all container widgets into subpackage

cwidgets/expanded/net.go

@@ -0,0 +1,53 @@
+package expanded
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/bcicen/ctop/cwidgets"
+	ui "github.com/gizak/termui"
+)
+
+type ExpandedNet struct {
+	*ui.Sparklines
+	rxHist DiffHist
+	txHist DiffHist
+}
+
+func NewExpandedNet() *ExpandedNet {
+	net := &ExpandedNet{ui.NewSparklines(), NewDiffHist(50), NewDiffHist(50)}
+	net.BorderLabel = "NET"
+	net.Height = 6
+	net.Width = 50
+	net.X = 0
+	net.Y = 24
+
+	rx := ui.NewSparkline()
+	rx.Title = "RX"
+	rx.Height = 1
+	rx.Data = net.rxHist.data
+	rx.TitleColor = ui.ColorDefault
+	rx.LineColor = ui.ColorGreen
+
+	tx := ui.NewSparkline()
+	tx.Title = "TX"
+	tx.Height = 1
+	tx.Data = net.txHist.data
+	tx.TitleColor = ui.ColorDefault
+	tx.LineColor = ui.ColorYellow
+
+	net.Lines = []ui.Sparkline{rx, tx}
+	return net
+}
+
+func (w *ExpandedNet) Update(rx int64, tx int64) {
+	var rate string
+
+	w.rxHist.Append(int(rx))
+	rate = strings.ToLower(cwidgets.ByteFormatInt(w.rxHist.Last()))
+	w.Lines[0].Title = fmt.Sprintf("RX [%s/s]", rate)
+
+	w.txHist.Append(int(tx))
+	rate = strings.ToLower(cwidgets.ByteFormatInt(w.txHist.Last()))
+	w.Lines[1].Title = fmt.Sprintf("TX [%s/s]", rate)
+}