mirror of
https://github.com/bcicen/ctop.git
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130 lines
2.4 KiB
Go
130 lines
2.4 KiB
Go
package main
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import (
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"fmt"
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ui "github.com/gizak/termui"
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)
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type Grid struct {
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cursorPos uint
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sortField string
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containers map[string]*Container
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}
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func (g *Grid) AddContainer(id, names string) {
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g.containers[id] = NewContainer(id, names)
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}
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// Return number of containers/rows
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func (g *Grid) Len() uint {
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return uint(len(g.containers))
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}
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// Return sorted list of container IDs
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func (g *Grid) CIDs() []string {
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var ids []string
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var containers []*Container
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for _, c := range g.containers {
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containers = append(containers, c)
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}
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sorter := Sorters[g.sortField]
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sorter(containers).Sort()
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for _, c := range containers {
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ids = append(ids, c.id)
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}
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return ids
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}
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// Redraw the cursor with the currently selected row
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func (g *Grid) Cursor() {
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for n, id := range g.CIDs() {
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c := g.containers[id]
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if uint(n) == g.cursorPos {
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c.widgets.name.TextFgColor = ui.ColorDefault
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c.widgets.name.TextBgColor = ui.ColorWhite
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} else {
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c.widgets.name.TextFgColor = ui.ColorWhite
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c.widgets.name.TextBgColor = ui.ColorDefault
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}
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}
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ui.Render(ui.Body)
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}
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func (g *Grid) Rows() (rows []*ui.Row) {
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for _, cid := range g.CIDs() {
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c := g.containers[cid]
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rows = append(rows, c.widgets.MakeRow())
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}
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return rows
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}
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func header() *ui.Row {
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return ui.NewRow(
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ui.NewCol(2, 0, headerPar("NAME")),
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ui.NewCol(1, 0, headerPar("CID")),
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ui.NewCol(2, 0, headerPar("CPU")),
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ui.NewCol(2, 0, headerPar("MEM")),
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ui.NewCol(2, 0, headerPar("NET RX/TX")),
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)
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}
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func headerPar(s string) *ui.Par {
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p := ui.NewPar(fmt.Sprintf(" %s", s))
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p.Border = false
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p.Height = 2
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p.Width = 20
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p.TextFgColor = ui.ColorWhite
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return p
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}
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func Display(g *Grid) {
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if err := ui.Init(); err != nil {
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panic(err)
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}
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defer ui.Close()
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// build layout
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ui.Body.AddRows(header())
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for _, row := range g.Rows() {
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ui.Body.AddRows(row)
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}
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// calculate layout
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ui.Body.Align()
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g.Cursor()
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ui.Render(ui.Body)
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ui.Handle("/sys/kbd/<up>", func(ui.Event) {
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if g.cursorPos > 0 {
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g.cursorPos -= 1
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g.Cursor()
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}
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})
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ui.Handle("/sys/kbd/<down>", func(ui.Event) {
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if g.cursorPos < (g.Len() - 1) {
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g.cursorPos += 1
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g.Cursor()
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}
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})
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ui.Handle("/sys/kbd/q", func(ui.Event) {
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ui.StopLoop()
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})
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ui.Handle("/timer/1s", func(e ui.Event) {
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ui.Render(ui.Body)
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})
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ui.Handle("/sys/wnd/resize", func(e ui.Event) {
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ui.Body.Width = ui.TermWidth()
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ui.Body.Align()
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ui.Clear()
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ui.Render(ui.Body)
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})
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ui.Loop()
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}
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