463 lines
10 KiB
Go
463 lines
10 KiB
Go
package views
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import (
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"fmt"
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"regexp"
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"sort"
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"strings"
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"sync"
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"time"
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"github.com/derailed/k9s/internal/resource"
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"github.com/derailed/tview"
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"github.com/gdamore/tcell"
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"github.com/rs/zerolog/log"
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"k8s.io/apimachinery/pkg/util/duration"
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)
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const (
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titleFmt = " [aqua::b]%s[aqua::-][[fuchsia::b]%d[aqua::-]] "
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searchFmt = "<[green::b]/%s[aqua::]> "
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nsTitleFmt = " [aqua::b]%s([fuchsia::b]%s[aqua::-])[aqua::-][[aqua::b]%d[aqua::-]][aqua::-] "
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)
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type (
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sortFn func(rows resource.Rows, sortCol sortColumn)
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cleanseFn func(string) string
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sortColumn struct {
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index int
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colCount int
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asc bool
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}
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tableView struct {
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*tview.Table
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app *appView
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baseTitle string
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currentNS string
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refreshMX sync.Mutex
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actions keyActions
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colorerFn colorerFn
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sortFn sortFn
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cleanseFn cleanseFn
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data resource.TableData
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cmdBuff *cmdBuff
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sortBuff *cmdBuff
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tableMX sync.Mutex
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sortCol sortColumn
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}
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)
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func newTableView(app *appView, title string) *tableView {
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v := tableView{app: app, Table: tview.NewTable(), sortCol: sortColumn{0, 0, true}}
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{
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v.baseTitle = title
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v.actions = make(keyActions)
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v.SetFixed(1, 0)
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v.SetBorder(true)
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v.SetFixed(1, 0)
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v.SetBorderColor(tcell.ColorDodgerBlue)
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v.SetBorderAttributes(tcell.AttrBold)
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v.SetBorderPadding(0, 0, 1, 1)
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v.cmdBuff = newCmdBuff('/')
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v.cmdBuff.addListener(app.cmdView)
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v.cmdBuff.reset()
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v.SetSelectable(true, false)
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v.SetSelectedStyle(tcell.ColorBlack, tcell.ColorAqua, tcell.AttrBold)
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v.SetInputCapture(v.keyboard)
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v.bindKeys()
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}
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return &v
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}
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func (v *tableView) bindKeys() {
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v.actions[KeyShiftI] = newKeyAction("Invert", v.sortInvertCmd, true)
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v.actions[KeyShiftN] = newKeyAction("Sort Name", v.sortColCmd(0), true)
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v.actions[KeyShiftA] = newKeyAction("Sort Age", v.sortColCmd(-1), true)
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v.actions[KeySlash] = newKeyAction("Filter Mode", v.activateCmd, false)
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v.actions[tcell.KeyEscape] = newKeyAction("Filter Reset", v.resetCmd, false)
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v.actions[tcell.KeyEnter] = newKeyAction("Filter", v.filterCmd, false)
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v.actions[tcell.KeyBackspace2] = newKeyAction("Erase", v.eraseCmd, false)
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v.actions[tcell.KeyBackspace] = newKeyAction("Erase", v.eraseCmd, false)
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v.actions[tcell.KeyDelete] = newKeyAction("Erase", v.eraseCmd, false)
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v.actions[KeyG] = newKeyAction("Top", v.app.puntCmd, false)
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v.actions[KeyShiftG] = newKeyAction("Bottom", v.app.puntCmd, false)
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v.actions[KeyB] = newKeyAction("Down", v.pageDownCmd, false)
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v.actions[KeyF] = newKeyAction("Up", v.pageUpCmd, false)
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}
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func (v *tableView) clearSelection() {
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v.Select(0, 0)
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v.ScrollToBeginning()
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}
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func (v *tableView) keyboard(evt *tcell.EventKey) *tcell.EventKey {
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key := evt.Key()
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if key == tcell.KeyRune {
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if v.cmdBuff.isActive() {
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v.cmdBuff.add(evt.Rune())
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v.clearSelection()
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v.doUpdate(v.filtered())
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v.setSelection()
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return nil
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}
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key = tcell.Key(evt.Rune())
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}
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if a, ok := v.actions[key]; ok {
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log.Debug().Msgf(">> TableView handled %s", tcell.KeyNames[key])
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return a.action(evt)
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}
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return evt
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}
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func (v *tableView) setSelection() {
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if v.GetRowCount() > 0 {
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v.Select(1, 0)
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}
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}
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func (v *tableView) pageUpCmd(evt *tcell.EventKey) *tcell.EventKey {
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v.PageUp()
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return nil
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}
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func (v *tableView) pageDownCmd(evt *tcell.EventKey) *tcell.EventKey {
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v.PageDown()
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return nil
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}
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func (v *tableView) filterCmd(evt *tcell.EventKey) *tcell.EventKey {
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v.cmdBuff.setActive(false)
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v.refresh()
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return nil
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}
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func (v *tableView) eraseCmd(evt *tcell.EventKey) *tcell.EventKey {
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if v.cmdBuff.isActive() {
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v.cmdBuff.del()
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}
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return nil
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}
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func (v *tableView) resetCmd(evt *tcell.EventKey) *tcell.EventKey {
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if !v.cmdBuff.empty() {
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v.app.flash(flashInfo, "Clearing filter...")
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}
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v.cmdBuff.reset()
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v.refresh()
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return nil
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}
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func (v *tableView) nameColIndex() int {
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col := 0
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if v.currentNS == resource.AllNamespaces {
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col++
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}
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return col
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}
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func (v *tableView) sortColCmd(col int) func(evt *tcell.EventKey) *tcell.EventKey {
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return func(evt *tcell.EventKey) *tcell.EventKey {
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if col == -1 {
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v.sortCol.index, v.sortCol.asc = v.GetColumnCount()-1, true
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} else {
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v.sortCol.index, v.sortCol.asc = v.nameColIndex()+col, true
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}
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v.refresh()
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return nil
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}
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}
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func (v *tableView) sortNamespaceCmd(evt *tcell.EventKey) *tcell.EventKey {
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v.sortCol.index, v.sortCol.asc = 0, true
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v.refresh()
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return nil
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}
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func (v *tableView) sortInvertCmd(evt *tcell.EventKey) *tcell.EventKey {
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v.sortCol.asc = !v.sortCol.asc
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v.refresh()
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return nil
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}
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func (v *tableView) activateCmd(evt *tcell.EventKey) *tcell.EventKey {
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if v.app.cmdView.inCmdMode() {
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return evt
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}
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v.app.flash(flashInfo, "Filtering...")
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v.cmdBuff.reset()
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v.cmdBuff.setActive(true)
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return nil
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}
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func (v *tableView) setDeleted() {
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r, _ := v.GetSelection()
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cols := v.GetColumnCount()
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for x := 0; x < cols; x++ {
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v.GetCell(r, x).SetAttributes(tcell.AttrDim)
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}
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}
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// SetColorer sets up table row color management.
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func (v *tableView) setColorer(f colorerFn) {
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v.colorerFn = f
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}
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// SetActions sets up keyboard action listener.
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func (v *tableView) setActions(aa keyActions) {
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v.tableMX.Lock()
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{
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for k, a := range aa {
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v.actions[k] = a
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}
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}
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v.tableMX.Unlock()
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}
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// Hints options
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func (v *tableView) hints() hints {
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if v.actions != nil {
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return v.actions.toHints()
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}
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return nil
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}
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func (v *tableView) refresh() {
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v.update(v.data)
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}
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// Update table content
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func (v *tableView) update(data resource.TableData) {
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v.refreshMX.Lock()
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{
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v.data = data
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if !v.cmdBuff.empty() {
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v.doUpdate(v.filtered())
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} else {
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v.doUpdate(data)
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}
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}
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v.refreshMX.Unlock()
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v.resetTitle()
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}
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func (v *tableView) filtered() resource.TableData {
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if v.cmdBuff.empty() {
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return v.data
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}
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rx, err := regexp.Compile(`(?i)` + v.cmdBuff.String())
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if err != nil {
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v.app.flash(flashErr, "Invalid filter expression")
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v.cmdBuff.clear()
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return v.data
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}
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filtered := resource.TableData{
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Header: v.data.Header,
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Rows: resource.RowEvents{},
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Namespace: v.data.Namespace,
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}
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for k, row := range v.data.Rows {
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f := strings.Join(row.Fields, " ")
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if rx.MatchString(f) {
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filtered.Rows[k] = row
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}
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}
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return filtered
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}
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func (v *tableView) sortIndicator(index int, name string) string {
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if v.sortCol.index != index {
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return name
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}
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order := "↓"
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if v.sortCol.asc {
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order = "↑"
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}
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return fmt.Sprintf("%s [green::]%s[::]", name, order)
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}
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func (v *tableView) doUpdate(data resource.TableData) {
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v.currentNS = data.Namespace
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if v.currentNS == resource.AllNamespaces && v.currentNS != "*" {
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v.actions[KeyShiftP] = newKeyAction("Sort Namespace", v.sortNamespaceCmd, true)
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} else {
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delete(v.actions, KeyShiftP)
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}
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v.Clear()
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// Going from namespace to non namespace or vice-versa?
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switch {
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case v.sortCol.colCount == 0:
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case len(data.Header) > v.sortCol.colCount:
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v.sortCol.index++
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case len(data.Header) < v.sortCol.colCount:
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v.sortCol.index--
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}
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v.sortCol.colCount = len(data.Header)
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if v.sortCol.index < 0 {
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v.sortCol.index = 0
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}
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pads := make(maxyPad, len(data.Header))
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computeMaxColumns(pads, v.sortCol.index, data)
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var row int
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for col, h := range data.Header {
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v.addHeaderCell(col, h, pads)
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}
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row++
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sortFn := v.defaultSort
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if v.sortFn != nil {
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sortFn = v.sortFn
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}
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prim, sec := v.sortAllRows(data.Rows, sortFn)
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for _, pk := range prim {
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for _, sk := range sec[pk] {
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fgColor := tcell.ColorGray
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if v.colorerFn != nil {
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fgColor = v.colorerFn(data.Namespace, data.Rows[sk])
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}
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for col, field := range data.Rows[sk].Fields {
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var age bool
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if data.Header[col] == "AGE" {
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age = true
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}
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v.addBodyCell(age, row, col, field, data.Rows[sk].Deltas[col], fgColor, pads)
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}
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row++
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}
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}
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}
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func (v *tableView) sortAllRows(rows resource.RowEvents, sortFn sortFn) (resource.Row, map[string]resource.Row) {
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keys := make([]string, len(rows))
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v.sortRows(rows, sortFn, v.sortCol, keys)
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sec := make(map[string]resource.Row, len(rows))
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for _, k := range keys {
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grp := rows[k].Fields[v.sortCol.index]
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sec[grp] = append(sec[grp], k)
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}
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// Performs secondary to sort by name for each groups.
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prim := make(resource.Row, 0, len(sec))
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for k, v := range sec {
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sort.Strings(v)
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prim = append(prim, k)
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}
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sort.Sort(groupSorter{prim, v.sortCol.asc})
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return prim, sec
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}
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func (v *tableView) addHeaderCell(col int, name string, pads maxyPad) {
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c := tview.NewTableCell(v.sortIndicator(col, name))
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{
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c.SetExpansion(1)
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c.SetTextColor(tcell.ColorAntiqueWhite)
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}
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v.SetCell(0, col, c)
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}
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func (v *tableView) addBodyCell(age bool, row, col int, field, delta string, color tcell.Color, pads maxyPad) {
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dField := field
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if age {
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dur, err := time.ParseDuration(field)
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if err == nil {
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dField = duration.HumanDuration(dur)
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}
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}
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dField += deltas(delta, field)
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if isASCII(field) {
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dField = pad(dField, pads[col]+5)
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}
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c := tview.NewTableCell(dField)
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{
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c.SetExpansion(1)
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c.SetTextColor(color)
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}
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v.SetCell(row, col, c)
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}
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func (v *tableView) defaultSort(rows resource.Rows, sortCol sortColumn) {
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t := rowSorter{rows: rows, index: sortCol.index, asc: sortCol.asc}
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sort.Sort(t)
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}
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func (*tableView) sortRows(evts resource.RowEvents, sortFn sortFn, sortCol sortColumn, keys []string) {
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rows := make(resource.Rows, 0, len(evts))
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for k, r := range evts {
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rows = append(rows, append(r.Fields, k))
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}
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sortFn(rows, sortCol)
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for i, r := range rows {
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keys[i] = r[len(r)-1]
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}
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}
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func (*tableView) defaultColCleanse(s string) string {
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return strings.TrimSpace(s)
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}
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func (v *tableView) resetTitle() {
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var title string
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rc := v.GetRowCount()
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if rc > 0 {
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rc--
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}
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switch v.currentNS {
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case resource.NotNamespaced, "*":
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title = fmt.Sprintf(titleFmt, v.baseTitle, rc)
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default:
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ns := v.currentNS
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if v.currentNS == resource.AllNamespaces {
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ns = resource.AllNamespace
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}
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title = fmt.Sprintf(nsTitleFmt, v.baseTitle, ns, rc)
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}
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if !v.cmdBuff.isActive() && !v.cmdBuff.empty() {
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title += fmt.Sprintf(searchFmt, v.cmdBuff)
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}
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v.SetTitle(title)
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}
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// ----------------------------------------------------------------------------
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// Event listeners...
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func (v *tableView) changed(s string) {}
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func (v *tableView) active(b bool) {
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if b {
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v.SetBorderColor(tcell.ColorRed)
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return
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}
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v.SetBorderColor(tcell.ColorDodgerBlue)
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}
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