dive-zfs/ui/detailsview.go

129 lines
3.4 KiB
Go

package ui
import (
"fmt"
"github.com/jroimartin/gocui"
"github.com/lunixbochs/vtclean"
"strings"
"github.com/wagoodman/dive/filetree"
"strconv"
"github.com/dustin/go-humanize"
)
type DetailsView struct {
Name string
gui *gocui.Gui
view *gocui.View
header *gocui.View
efficiency float64
inefficiencies filetree.EfficiencySlice
}
func NewStatisticsView(name string, gui *gocui.Gui) (detailsview *DetailsView) {
detailsview = new(DetailsView)
// populate main fields
detailsview.Name = name
detailsview.gui = gui
return detailsview
}
func (view *DetailsView) Setup(v *gocui.View, header *gocui.View) error {
// set view options
view.view = v
view.view.Editable = false
view.view.Wrap = true
view.view.Highlight = false
view.view.Frame = false
view.header = header
view.header.Editable = false
view.header.Wrap = false
view.header.Frame = false
// set keybindings
if err := view.gui.SetKeybinding(view.Name, gocui.KeyArrowDown, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.CursorDown() }); err != nil {
return err
}
if err := view.gui.SetKeybinding(view.Name, gocui.KeyArrowUp, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.CursorUp() }); err != nil {
return err
}
return view.Render()
}
func (view *DetailsView) IsVisible() bool {
if view == nil {return false}
return true
}
// we only need to update this view upon the initial tree load
func (view *DetailsView) Update() error {
layerTrees := Views.Tree.RefTrees
view.efficiency, view.inefficiencies = filetree.Efficiency(layerTrees[:len(layerTrees)-1])
return nil
}
func (view *DetailsView) Render() error {
currentLayer := Views.Layer.currentLayer()
var wastedSpace int64
template := "%5s %12s %-s\n"
var trueInefficiencies int
inefficiencyReport := fmt.Sprintf(Formatting.Header(template), "Count", "Total Space", "Path")
for idx := len(view.inefficiencies)-1; idx > 0; idx-- {
data := view.inefficiencies[idx]
if data.CumulativeSize == 0 {
continue
}
trueInefficiencies++
wastedSpace += data.CumulativeSize
inefficiencyReport += fmt.Sprintf(template, strconv.Itoa(len(data.Nodes)), humanize.Bytes(uint64(data.CumulativeSize)), data.Path)
}
if trueInefficiencies == 0 {
inefficiencyReport = ""
}
effStr := fmt.Sprintf("\n%s %d %%", Formatting.Header("Image efficiency score:"), int(100.0*view.efficiency))
spaceStr := fmt.Sprintf("%s %s\n", Formatting.Header("Potential wasted space:"), humanize.Bytes(uint64(wastedSpace)))
view.gui.Update(func(g *gocui.Gui) error {
// update header
view.header.Clear()
width, _ := g.Size()
headerStr := fmt.Sprintf("[Image & Layer Details]%s", strings.Repeat("─",width*2))
fmt.Fprintln(view.header, Formatting.Header(vtclean.Clean(headerStr, false)))
// update contents
view.view.Clear()
fmt.Fprintln(view.view, Formatting.Header("Layer Command"))
fmt.Fprintln(view.view, currentLayer.History.CreatedBy)
fmt.Fprintln(view.view, effStr)
fmt.Fprintln(view.view, spaceStr)
fmt.Fprintln(view.view, inefficiencyReport)
return nil
})
return nil
}
func (view *DetailsView) CursorDown() error {
return CursorDown(view.gui, view.view)
}
func (view *DetailsView) CursorUp() error {
return CursorUp(view.gui, view.view)
}
func (view *DetailsView) KeyHelp() string {
return "TBD"
// return renderStatusOption("^L","Layer changes", view.CompareMode == CompareLayer) +
// renderStatusOption("^A","All changes", view.CompareMode == CompareAll)
}