refactor dockersource container refresh into channel

cwidgets/compact/gauge.go

@@ -23,3 +23,13 @@ func (w *GaugeCol) Reset() {
 	w.Label = "-"
 	w.Percent = 0
 }
+
+func colorScale(n int) ui.Attribute {
+	if n > 70 {
+		return ui.ColorRed
+	}
+	if n > 30 {
+		return ui.ColorYellow
+	}
+	return ui.ColorGreen
+}

cwidgets/compact/grid.go

@@ -24,8 +24,9 @@ func (cg *CompactGrid) Align() {
 	// Update y recursively
 	cg.header.SetY(cg.Y)
 	y := cg.Y + 1
-	for n, r := range cg.Rows {
-		r.SetY(y + n)
+	for _, r := range cg.Rows {
+		r.SetY(y)
+		y += r.Height
 	}
 	// Update width recursively
 	cg.header.SetWidth(cg.Width)

cwidgets/compact/main.go

@@ -28,10 +28,14 @@ type Compact struct {
 	Height int
 }
 
-func NewCompact(id, name string) *Compact {
+func NewCompact(id string) *Compact {
+	// truncate container id
+	if len(id) > 12 {
+		id = id[:12]
+	}
 	row := &Compact{
 		Status: NewStatus(),
-		Name:   NewTextCol(name),
+		Name:   NewTextCol("-"),
 		Cid:    NewTextCol(id),
 		Cpu:    NewGaugeCol(),
 		Memory: NewGaugeCol(),
@@ -41,6 +45,14 @@ func NewCompact(id, name string) *Compact {
 	return row
 }
 
+//func (row *Compact) ToggleExpand() {
+//if row.Height == 1 {
+//row.Height = 4
+//} else {
+//row.Height = 1
+//}
+//}
+
 func (row *Compact) SetMetrics(m metrics.Metrics) {
 	row.SetCPU(m.CPUUtil)
 	row.SetNet(m.NetRx, m.NetTx)
@@ -114,7 +126,7 @@ func (row *Compact) SetNet(rx int64, tx int64) {
 }
 
 func (row *Compact) SetCPU(val int) {
-	row.Cpu.BarColor = cwidgets.ColorScale(val)
+	row.Cpu.BarColor = colorScale(val)
 	row.Cpu.Label = fmt.Sprintf("%s%%", strconv.Itoa(val))
 	if val < 5 {
 		val = 5

cwidgets/util.go

@@ -3,8 +3,6 @@ package cwidgets
 import (
 	"fmt"
 	"strconv"
-
-	ui "github.com/gizak/termui"
 )
 
 const (
@@ -48,13 +46,3 @@ func getPrecision(f float64) int {
 	}
 	return 2 // default precision
 }
-
-func ColorScale(n int) ui.Attribute {
-	if n > 70 {
-		return ui.ColorRed
-	}
-	if n > 30 {
-		return ui.ColorYellow
-	}
-	return ui.ColorGreen
-}