refactor all container widgets into subpackage

container.go

@@ -3,8 +3,10 @@ package main
 import (
 	"strings"
 
+	"github.com/bcicen/ctop/cwidgets"
+	"github.com/bcicen/ctop/cwidgets/compact"
+	"github.com/bcicen/ctop/cwidgets/expanded"
 	"github.com/bcicen/ctop/metrics"
-	"github.com/bcicen/ctop/widgets"
 )
 
 type Container struct {
@@ -12,7 +14,7 @@ type Container struct {
 	name    string
 	state   string
 	metrics metrics.Metrics
-	widgets widgets.ContainerWidgets
+	widgets cwidgets.ContainerWidgets
 }
 
 func NewContainer(id, name string) *Container {
@@ -20,7 +22,7 @@ func NewContainer(id, name string) *Container {
 		id:   id,
 		name: name,
 	}
-	c.widgets = widgets.NewCompact(c.ShortID(), c.ShortName(), c.state)
+	c.widgets = compact.NewCompact(c.ShortID(), c.ShortName(), c.state)
 	return c
 }
 
@@ -33,10 +35,10 @@ func (c *Container) ShortName() string {
 }
 
 func (c *Container) Expand() {
-	var curWidgets widgets.ContainerWidgets
+	var curWidgets cwidgets.ContainerWidgets
 
 	curWidgets = c.widgets
-	c.widgets = widgets.NewExpanded(c.ShortID(), c.name)
+	c.widgets = expanded.NewExpanded(c.ShortID(), c.name)
 	c.widgets.Render(0, 0)
 	c.widgets = curWidgets
 }

cwidgets/compact/grid.go

@@ -0,0 +1,50 @@
+package compact
+
+import (
+	"github.com/bcicen/ctop/cwidgets"
+	ui "github.com/gizak/termui"
+)
+
+type CompactGrid struct {
+	ui.GridBufferer
+	Rows   []cwidgets.ContainerWidgets
+	X, Y   int
+	Width  int
+	Height int
+	header *CompactHeader
+}
+
+func NewCompactGrid() *CompactGrid {
+	return &CompactGrid{
+		header: NewCompactHeader(),
+	}
+}
+
+func (c *CompactGrid) Align() {
+	// Update y recursively
+	c.header.SetY(c.Y)
+	y := c.Y + 1
+	for n, r := range c.Rows {
+		r.SetY(y + n)
+	}
+	// Update width recursively
+	c.header.SetWidth(c.Width)
+	for _, r := range c.Rows {
+		r.SetWidth(c.Width)
+	}
+}
+
+func (c *CompactGrid) Clear()         { c.Rows = []cwidgets.ContainerWidgets{} }
+func (c *CompactGrid) GetHeight() int { return len(c.Rows) }
+func (c *CompactGrid) SetX(x int)     { c.X = x }
+func (c *CompactGrid) SetY(y int)     { c.Y = y }
+func (c *CompactGrid) SetWidth(w int) { c.Width = w }
+
+func (c *CompactGrid) Buffer() ui.Buffer {
+	buf := ui.NewBuffer()
+	buf.Merge(c.header.Buffer())
+	for _, r := range c.Rows {
+		buf.Merge(r.Buffer())
+	}
+	return buf
+}

cwidgets/compact/header.go

@@ -0,0 +1,48 @@
+package compact
+
+import (
+	ui "github.com/gizak/termui"
+)
+
+type CompactHeader struct {
+	pars []*ui.Par
+}
+
+func NewCompactHeader() *CompactHeader {
+	fields := []string{"", "NAME", "CID", "CPU", "MEM", "NET RX/TX"}
+	header := &CompactHeader{}
+	for _, f := range fields {
+		header.pars = append(header.pars, slimHeaderPar(f))
+	}
+	return header
+}
+
+func (c *CompactHeader) SetWidth(w int) {
+	x := 1
+	autoWidth := calcWidth(w, 5)
+	for n, col := range c.pars {
+		if n == 0 {
+			col.SetX(x)
+			col.SetWidth(statusWidth)
+			x += statusWidth
+			continue
+		}
+		col.SetX(x)
+		col.SetWidth(autoWidth)
+		x += autoWidth + colSpacing
+	}
+}
+
+func (c *CompactHeader) SetY(y int) {
+	for _, p := range c.pars {
+		p.SetY(y)
+	}
+}
+
+func (c *CompactHeader) Buffer() ui.Buffer {
+	buf := ui.NewBuffer()
+	for _, p := range c.pars {
+		buf.Merge(p.Buffer())
+	}
+	return buf
+}

cwidgets/compact/main.go

@@ -0,0 +1,143 @@
+package compact
+
+import (
+	"fmt"
+	"github.com/bcicen/ctop/cwidgets"
+	"strconv"
+
+	ui "github.com/gizak/termui"
+)
+
+const (
+	mark        = string('\u25C9')
+	vBar        = string('\u25AE')
+	colSpacing  = 1
+	statusWidth = 3
+)
+
+type Compact struct {
+	Status *ui.Par
+	Cid    *ui.Par
+	Net    *ui.Par
+	Name   *ui.Par
+	Cpu    *ui.Gauge
+	Memory *ui.Gauge
+}
+
+func NewCompact(id, name, status string) *Compact {
+	w := &Compact{
+		Status: slimPar(mark),
+		Cid:    slimPar(id),
+		Name:   slimPar(name),
+	}
+	w.Reset()
+	w.SetStatus(status)
+	return w
+}
+
+// Set gauges, counters to default unread values
+func (w *Compact) Reset() {
+	w.Net = slimPar("-")
+	w.Cpu = slimGauge()
+	w.Memory = slimGauge()
+}
+
+func (w *Compact) all() []ui.GridBufferer {
+	return []ui.GridBufferer{
+		w.Status,
+		w.Name,
+		w.Cid,
+		w.Cpu,
+		w.Memory,
+		w.Net,
+	}
+}
+
+func (w *Compact) SetY(y int) {
+	for _, col := range w.all() {
+		col.SetY(y)
+	}
+}
+
+func (w *Compact) SetWidth(width int) {
+	x := 1
+	autoWidth := calcWidth(width, 5)
+	for n, col := range w.all() {
+		if n == 0 {
+			col.SetX(x)
+			col.SetWidth(statusWidth)
+			x += statusWidth
+			continue
+		}
+		col.SetX(x)
+		col.SetWidth(autoWidth)
+		x += autoWidth + colSpacing
+	}
+}
+
+func (w *Compact) Render(y, rowWidth int) {}
+
+func (w *Compact) Buffer() ui.Buffer {
+	buf := ui.NewBuffer()
+
+	buf.Merge(w.Status.Buffer())
+	buf.Merge(w.Name.Buffer())
+	buf.Merge(w.Cid.Buffer())
+	buf.Merge(w.Cpu.Buffer())
+	buf.Merge(w.Memory.Buffer())
+	buf.Merge(w.Net.Buffer())
+
+	return buf
+}
+
+func (w *Compact) Highlight() {
+	w.Name.TextFgColor = ui.ColorDefault
+	w.Name.TextBgColor = ui.ColorWhite
+}
+
+func (w *Compact) UnHighlight() {
+	w.Name.TextFgColor = ui.ColorWhite
+	w.Name.TextBgColor = ui.ColorDefault
+}
+
+func (w *Compact) SetStatus(val string) {
+	switch val {
+	case "running":
+		w.Status.Text = mark
+		w.Status.TextFgColor = ui.ColorGreen
+	case "exited":
+		w.Status.Text = mark
+		w.Status.TextFgColor = ui.ColorRed
+	case "paused":
+		w.Status.Text = fmt.Sprintf("%s%s", vBar, vBar)
+		w.Status.TextFgColor = ui.ColorDefault
+	default:
+		w.Status.Text = mark
+		w.Status.TextFgColor = ui.ColorRed
+	}
+}
+
+func (w *Compact) SetCPU(val int) {
+	w.Cpu.BarColor = cwidgets.ColorScale(val)
+	w.Cpu.Label = fmt.Sprintf("%s%%", strconv.Itoa(val))
+	if val < 5 {
+		val = 5
+		w.Cpu.BarColor = ui.ColorBlack
+	}
+	w.Cpu.Percent = val
+}
+
+func (w *Compact) SetNet(rx int64, tx int64) {
+	w.Net.Text = fmt.Sprintf("%s / %s", cwidgets.ByteFormat(rx), cwidgets.ByteFormat(tx))
+}
+
+func (w *Compact) SetMem(val int64, limit int64, percent int) {
+	w.Memory.Label = fmt.Sprintf("%s / %s", cwidgets.ByteFormat(val), cwidgets.ByteFormat(limit))
+	if percent < 5 {
+		percent = 5
+		w.Memory.BarColor = ui.ColorBlack
+	} else {
+		w.Memory.BarColor = ui.ColorGreen
+	}
+	w.Memory.Percent = percent
+}

cwidgets/compact/util.go

@@ -0,0 +1,60 @@
+package compact
+
+// Common helper functions
+
+import (
+	"fmt"
+	ui "github.com/gizak/termui"
+)
+
+// Calculate per-column width, given total width and number of items
+func calcWidth(width, items int) int {
+	spacing := colSpacing * items
+	return (width - statusWidth - spacing) / items
+}
+
+func slimHeaderPar(s string) *ui.Par {
+	p := slimPar(s)
+	p.Y = 2
+	p.Height = 2
+	return p
+}
+
+func slimPar(s string) *ui.Par {
+	p := ui.NewPar(s)
+	p.Border = false
+	p.Height = 1
+	p.Width = 20
+	p.TextFgColor = ui.ColorWhite
+	return p
+}
+
+func slimGauge() *ui.Gauge {
+	g := ui.NewGauge()
+	g.Height = 1
+	g.Border = false
+	g.Percent = 0
+	g.PaddingBottom = 0
+	g.BarColor = ui.ColorGreen
+	g.Label = "-"
+	return g
+}
+
+func centerParText(p *ui.Par) {
+	var text string
+	var padding string
+
+	// strip existing left-padding
+	for i, ch := range p.Text {
+		if string(ch) != " " {
+			text = p.Text[i:]
+			break
+		}
+	}
+
+	padlen := (p.InnerWidth() - len(text)) / 2
+	for i := 0; i < padlen; i++ {
+		padding += " "
+	}
+	p.Text = fmt.Sprintf("%s%s", padding, text)
+}

cwidgets/expanded/cpu.go

@@ -1,4 +1,4 @@
-package widgets
+package expanded
 
 import (
 	ui "github.com/gizak/termui"

cwidgets/expanded/hist.go

@@ -1,4 +1,4 @@
-package widgets
+package expanded
 
 type IntHist struct {
 	data   []int

cwidgets/expanded/main.go

@@ -1,4 +1,4 @@
-package widgets
+package expanded
 
 import (
 	ui "github.com/gizak/termui"

cwidgets/expanded/mem.go

@@ -1,6 +1,7 @@
-package widgets
+package expanded
 
 import (
+	"github.com/bcicen/ctop/cwidgets"
 	ui "github.com/gizak/termui"
 )
 
@@ -25,7 +26,7 @@ func NewExpandedMem() *ExpandedMem {
 	mem.Data = mem.hist.data
 	mem.BarColor = ui.ColorGreen
 	mem.DataLabels = mem.hist.labels
-	mem.NumFmt = byteFormatInt
+	mem.NumFmt = cwidgets.ByteFormatInt
 	return mem
 }
 

cwidgets/expanded/net.go

@@ -1,9 +1,10 @@
-package widgets
+package expanded
 
 import (
 	"fmt"
 	"strings"
 
+	"github.com/bcicen/ctop/cwidgets"
 	ui "github.com/gizak/termui"
 )
 
@@ -43,10 +44,10 @@ func (w *ExpandedNet) Update(rx int64, tx int64) {
 	var rate string
 
 	w.rxHist.Append(int(rx))
-	rate = strings.ToLower(byteFormatInt(w.rxHist.Last()))
+	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(byteFormatInt(w.txHist.Last()))
+	rate = strings.ToLower(cwidgets.ByteFormatInt(w.txHist.Last()))
 	w.Lines[1].Title = fmt.Sprintf("TX [%s/s]", rate)
 }

cwidgets/main.go

@@ -0,0 +1,22 @@
+package cwidgets
+
+import (
+	"github.com/bcicen/ctop/logging"
+	ui "github.com/gizak/termui"
+)
+
+var log = logging.Init()
+
+type ContainerWidgets interface {
+	Render(int, int)
+	Reset()
+	Buffer() ui.Buffer
+	Highlight()
+	UnHighlight()
+	SetY(int)
+	SetWidth(int)
+	SetStatus(string)
+	SetCPU(int)
+	SetNet(int64, int64)
+	SetMem(int64, int64, int)
+}

cwidgets/util.go

@@ -1,4 +1,4 @@
-package widgets
+package cwidgets
 
 import (
 	"fmt"
@@ -14,11 +14,11 @@ const (
 )
 
 // convenience method
-func byteFormatInt(n int) string {
-	return byteFormat(int64(n))
+func ByteFormatInt(n int) string {
+	return ByteFormat(int64(n))
 }
 
-func byteFormat(n int64) string {
+func ByteFormat(n int64) string {
 	if n < kb {
 		return fmt.Sprintf("%sB", strconv.FormatInt(n, 10))
 	}
@@ -49,7 +49,7 @@ func getPrecision(f float64) int {
 	return 2 // default precision
 }
 
-func colorScale(n int) ui.Attribute {
+func ColorScale(n int) ui.Attribute {
 	if n > 70 {
 		return ui.ColorRed
 	}

grid.go

@@ -4,11 +4,12 @@ import (
 	"fmt"
 
 	"github.com/bcicen/ctop/config"
+	"github.com/bcicen/ctop/cwidgets/compact"
 	"github.com/bcicen/ctop/widgets"
 	ui "github.com/gizak/termui"
 )
 
-var cGrid = widgets.NewCompactGrid()
+var cGrid = compact.NewCompactGrid()
 
 func maxRows() int {
 	return ui.TermHeight() - 2 - cGrid.Y
@@ -85,7 +86,7 @@ func (g *Grid) cursorDown() {
 
 func (g *Grid) redrawRows() {
 	// reinit body rows
-	cGrid.Rows = []widgets.ContainerWidgets{}
+	cGrid.Clear()
 
 	// build layout
 	y := 1

widgets/compact.go

@@ -1,297 +0,0 @@
-package widgets
-
-import (
-	"fmt"
-	"strconv"
-
-	"github.com/bcicen/ctop/logging"
-	ui "github.com/gizak/termui"
-)
-
-var log = logging.Init()
-
-const (
-	mark        = string('\u25C9')
-	vBar        = string('\u25AE')
-	colSpacing  = 1
-	statusWidth = 3
-)
-
-type CompactGrid struct {
-	ui.GridBufferer
-	Rows   []ContainerWidgets
-	X, Y   int
-	Width  int
-	Height int
-	header *CompactHeader
-}
-
-func NewCompactGrid() *CompactGrid {
-	return &CompactGrid{
-		header: NewCompactHeader(),
-	}
-}
-
-func (c *CompactGrid) Align() {
-	// Update y recursively
-	c.header.SetY(c.Y)
-	y := c.Y + 1
-	for n, r := range c.Rows {
-		r.SetY(y + n)
-	}
-	// Update width recursively
-	c.header.SetWidth(c.Width)
-	for _, r := range c.Rows {
-		r.SetWidth(c.Width)
-	}
-}
-
-func (c *CompactGrid) GetHeight() int { return len(c.Rows) }
-func (c *CompactGrid) SetX(x int)     { c.X = x }
-func (c *CompactGrid) SetY(y int)     { c.Y = y }
-func (c *CompactGrid) SetWidth(w int) { c.Width = w }
-
-func (c *CompactGrid) Buffer() ui.Buffer {
-	buf := ui.NewBuffer()
-	buf.Merge(c.header.Buffer())
-	for _, r := range c.Rows {
-		buf.Merge(r.Buffer())
-	}
-	return buf
-}
-
-type ContainerWidgets interface {
-	Render(int, int)
-	Reset()
-	Buffer() ui.Buffer
-	Highlight()
-	UnHighlight()
-	SetY(int)
-	SetWidth(int)
-	SetStatus(string)
-	SetCPU(int)
-	SetNet(int64, int64)
-	SetMem(int64, int64, int)
-}
-
-type CompactHeader struct {
-	pars []*ui.Par
-}
-
-func NewCompactHeader() *CompactHeader {
-	fields := []string{"", "NAME", "CID", "CPU", "MEM", "NET RX/TX"}
-	header := &CompactHeader{}
-	for _, f := range fields {
-		header.pars = append(header.pars, slimHeaderPar(f))
-	}
-	return header
-}
-
-// Calculate per-column width, given total width and number of items
-func calcWidth(width, items int) int {
-	spacing := colSpacing * items
-	return (width - statusWidth - spacing) / items
-}
-
-func (c *CompactHeader) SetWidth(w int) {
-	x := 1
-	autoWidth := calcWidth(w, 5)
-	for n, col := range c.pars {
-		if n == 0 {
-			col.SetX(x)
-			col.SetWidth(statusWidth)
-			x += statusWidth
-			continue
-		}
-		col.SetX(x)
-		col.SetWidth(autoWidth)
-		x += autoWidth + colSpacing
-	}
-}
-
-func (c *CompactHeader) SetY(y int) {
-	for _, p := range c.pars {
-		p.SetY(y)
-	}
-}
-
-func (c *CompactHeader) Buffer() ui.Buffer {
-	buf := ui.NewBuffer()
-	for _, p := range c.pars {
-		buf.Merge(p.Buffer())
-	}
-	return buf
-}
-
-type Compact struct {
-	Status *ui.Par
-	Cid    *ui.Par
-	Net    *ui.Par
-	Name   *ui.Par
-	Cpu    *ui.Gauge
-	Memory *ui.Gauge
-}
-
-func NewCompact(id, name, status string) *Compact {
-	w := &Compact{
-		Status: slimPar(mark),
-		Cid:    slimPar(id),
-		Name:   slimPar(name),
-	}
-	w.Reset()
-	w.SetStatus(status)
-	return w
-}
-
-// Set gauges, counters to default unread values
-func (w *Compact) Reset() {
-	w.Net = slimPar("-")
-	w.Cpu = slimGauge()
-	w.Memory = slimGauge()
-}
-
-func (w *Compact) all() []ui.GridBufferer {
-	return []ui.GridBufferer{
-		w.Status,
-		w.Name,
-		w.Cid,
-		w.Cpu,
-		w.Memory,
-		w.Net,
-	}
-}
-
-func (w *Compact) SetY(y int) {
-	for _, col := range w.all() {
-		col.SetY(y)
-	}
-}
-
-func (w *Compact) SetWidth(width int) {
-	x := 1
-	autoWidth := calcWidth(width, 5)
-	for n, col := range w.all() {
-		if n == 0 {
-			col.SetX(x)
-			col.SetWidth(statusWidth)
-			x += statusWidth
-			continue
-		}
-		col.SetX(x)
-		col.SetWidth(autoWidth)
-		x += autoWidth + colSpacing
-	}
-}
-
-func (w *Compact) Render(y, rowWidth int) {}
-
-func (w *Compact) Buffer() ui.Buffer {
-	buf := ui.NewBuffer()
-
-	buf.Merge(w.Status.Buffer())
-	buf.Merge(w.Name.Buffer())
-	buf.Merge(w.Cid.Buffer())
-	buf.Merge(w.Cpu.Buffer())
-	buf.Merge(w.Memory.Buffer())
-	buf.Merge(w.Net.Buffer())
-
-	return buf
-}
-
-func (w *Compact) Highlight() {
-	w.Name.TextFgColor = ui.ColorDefault
-	w.Name.TextBgColor = ui.ColorWhite
-}
-
-func (w *Compact) UnHighlight() {
-	w.Name.TextFgColor = ui.ColorWhite
-	w.Name.TextBgColor = ui.ColorDefault
-}
-
-func (w *Compact) SetStatus(val string) {
-	switch val {
-	case "running":
-		w.Status.Text = mark
-		w.Status.TextFgColor = ui.ColorGreen
-	case "exited":
-		w.Status.Text = mark
-		w.Status.TextFgColor = ui.ColorRed
-	case "paused":
-		w.Status.Text = fmt.Sprintf("%s%s", vBar, vBar)
-		w.Status.TextFgColor = ui.ColorDefault
-	default:
-		w.Status.Text = mark
-		w.Status.TextFgColor = ui.ColorRed
-	}
-}
-
-func (w *Compact) SetCPU(val int) {
-	w.Cpu.BarColor = colorScale(val)
-	w.Cpu.Label = fmt.Sprintf("%s%%", strconv.Itoa(val))
-	if val < 5 {
-		val = 5
-		w.Cpu.BarColor = ui.ColorBlack
-	}
-	w.Cpu.Percent = val
-}
-
-func (w *Compact) SetNet(rx int64, tx int64) {
-	w.Net.Text = fmt.Sprintf("%s / %s", byteFormat(rx), byteFormat(tx))
-}
-
-func (w *Compact) SetMem(val int64, limit int64, percent int) {
-	w.Memory.Label = fmt.Sprintf("%s / %s", byteFormat(val), byteFormat(limit))
-	if percent < 5 {
-		percent = 5
-		w.Memory.BarColor = ui.ColorBlack
-	} else {
-		w.Memory.BarColor = ui.ColorGreen
-	}
-	w.Memory.Percent = percent
-}
-
-func centerParText(p *ui.Par) {
-	var text string
-	var padding string
-
-	// strip existing left-padding
-	for i, ch := range p.Text {
-		if string(ch) != " " {
-			text = p.Text[i:]
-			break
-		}
-	}
-
-	padlen := (p.InnerWidth() - len(text)) / 2
-	for i := 0; i < padlen; i++ {
-		padding += " "
-	}
-	p.Text = fmt.Sprintf("%s%s", padding, text)
-}
-
-func slimHeaderPar(s string) *ui.Par {
-	p := slimPar(s)
-	p.Y = 2
-	p.Height = 2
-	return p
-}
-
-func slimPar(s string) *ui.Par {
-	p := ui.NewPar(s)
-	p.Border = false
-	p.Height = 1
-	p.Width = 20
-	p.TextFgColor = ui.ColorWhite
-	return p
-}
-
-func slimGauge() *ui.Gauge {
-	g := ui.NewGauge()
-	g.Height = 1
-	g.Border = false
-	g.Percent = 0
-	g.PaddingBottom = 0
-	g.BarColor = ui.ColorGreen
-	g.Label = "-"
-	return g
-}