add ContainerWidgets interface, config channel

config.go

@@ -4,20 +4,32 @@ import (
 	"os"
 )
 
-type Config struct {
-	dockerHost string
-	sortField  string
+var configChan = make(chan ConfigMsg)
+
+type Config map[string]string
+
+type ConfigMsg struct {
+	key string
+	val string
 }
 
-var DefaultConfig = NewDefaultConfig()
+func updateConfig(k, v string) {
+	configChan <- ConfigMsg{k, v}
+}
 
 func NewDefaultConfig() Config {
 	docker := os.Getenv("DOCKER_HOST")
 	if docker == "" {
 		docker = "unix:///var/run/docker.sock"
 	}
-	return Config{
-		dockerHost: docker,
-		sortField:  "id",
+	config := Config{
+		"dockerHost": docker,
+		"sortField":  "id",
 	}
+	go func() {
+		for m := range configChan {
+			config[m.key] = m.val
+		}
+	}()
+	return config
 }

container.go

@@ -12,7 +12,7 @@ type Container struct {
 	name    string
 	done    chan bool
 	stats   chan *docker.Stats
-	widgets *widgets.Compact
+	widgets widgets.ContainerWidgets
 	reader  *StatReader
 }
 

containermap.go

@@ -9,10 +9,10 @@ var filters = map[string][]string{
 }
 
 func NewContainerMap() *ContainerMap {
-	config := DefaultConfig
+	config := NewDefaultConfig()
 
 	// init docker client
-	client, err := docker.NewClient(config.dockerHost)
+	client, err := docker.NewClient(config["dockerHost"])
 	if err != nil {
 		panic(err)
 	}
@@ -66,6 +66,6 @@ func (cm *ContainerMap) All() []*Container {
 	for _, c := range cm.containers {
 		containers = append(containers, c)
 	}
-	SortContainers(cm.config.sortField, containers)
+	SortContainers(cm.config["sortField"], containers)
 	return containers
 }

grid.go

@@ -54,11 +54,9 @@ func (g *Grid) cursorDown() {
 func (g *Grid) redrawCursor() {
 	for _, c := range g.containers {
 		if c.id == g.cursorID {
-			c.widgets.Name.TextFgColor = ui.ColorDefault
-			c.widgets.Name.TextBgColor = ui.ColorWhite
+			c.widgets.Highlight()
 		} else {
-			c.widgets.Name.TextFgColor = ui.ColorWhite
-			c.widgets.Name.TextBgColor = ui.ColorDefault
+			c.widgets.UnHighlight()
 		}
 		ui.Render(ui.Body)
 	}

menus.go

@@ -32,7 +32,7 @@ func SortMenu(g *Grid) {
 	ui.Render(m)
 	m.NavigationHandlers()
 	ui.Handle("/sys/kbd/<enter>", func(ui.Event) {
-		g.containerMap.config.sortField = m.Items[m.CursorPos]
+		updateConfig("sortField", m.Items[m.CursorPos])
 		ui.StopLoop()
 	})
 	ui.Loop()

widgets/compact.go

@@ -7,6 +7,15 @@ import (
 	ui "github.com/gizak/termui"
 )
 
+type ContainerWidgets interface {
+	Row() *ui.Row
+	Highlight()
+	UnHighlight()
+	SetCPU(int)
+	SetNet(int64, int64)
+	SetMem(int64, int64, int)
+}
+
 type Compact struct {
 	Cid    *ui.Par
 	Net    *ui.Par
@@ -35,6 +44,16 @@ func (w *Compact) Row() *ui.Row {
 	)
 }
 
+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) SetCPU(val int) {
 	w.Cpu.BarColor = colorScale(val)
 	w.Cpu.Label = fmt.Sprintf("%s%%", strconv.Itoa(val))