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cointop/cointop/help.go

105 lines
2.3 KiB
Go

package cointop
import (
"fmt"
"sort"
"github.com/miguelmota/cointop/cointop/common/pad"
)
// HelpView is structure for help view
type HelpView struct {
*View
}
// NewHelpView returns a new help view
func NewHelpView() *HelpView {
return &HelpView{NewView("help")}
}
func (ct *Cointop) updateHelp() {
ct.debuglog("updateHelp()")
keys := make([]string, 0, len(ct.State.shortcutKeys))
for k := range ct.State.shortcutKeys {
keys = append(keys, k)
}
sort.Strings(keys)
header := ct.colorscheme.MenuHeader(fmt.Sprintf(" Help %s\n\n", pad.Left("[q] close ", ct.maxTableWidth-10, " ")))
cnt := 0
h := ct.Views.Help.Height()
percol := h - 6
cols := make([][]string, percol)
for i := range cols {
cols[i] = make([]string, 20)
}
for _, k := range keys {
v := ct.State.shortcutKeys[k]
if cnt%percol == 0 {
cnt = 0
}
item := fmt.Sprintf("%10s %-40s", k, ct.colorscheme.MenuLabel(v))
cols[cnt] = append(cols[cnt], item)
cnt = cnt + 1
}
var body string
for i := 0; i < percol; i++ {
var row string
for j := 0; j < len(cols[i]); j++ {
item := cols[i][j]
row = fmt.Sprintf("%s%s", row, item)
}
body = fmt.Sprintf("%s%s\n", body, row)
}
body = fmt.Sprintf("%s\n", body)
infoline := " List of keyboard shortcuts\n\n"
versionline := pad.Left(fmt.Sprintf("v%s", ct.Version()), ct.maxTableWidth-5, " ")
content := header + infoline + body + versionline
ct.Update(func() {
if ct.Views.Help.Backing() == nil {
return
}
ct.Views.Help.Backing().Clear()
ct.Views.Help.Backing().Frame = true
fmt.Fprintln(ct.Views.Help.Backing(), content)
})
}
func (ct *Cointop) showHelp() error {
ct.debuglog("showHelp()")
ct.State.helpVisible = true
ct.updateHelp()
ct.SetActiveView(ct.Views.Help.Name())
return nil
}
func (ct *Cointop) hideHelp() error {
ct.debuglog("hideHelp()")
ct.State.helpVisible = false
ct.SetViewOnBottom(ct.Views.Help.Name())
ct.SetActiveView(ct.Views.Table.Name())
ct.Update(func() {
if ct.Views.Help.Backing() == nil {
return
}
ct.Views.Help.Backing().Clear()
ct.Views.Help.Backing().Frame = false
fmt.Fprintln(ct.Views.Help.Backing(), "")
})
return nil
}
func (ct *Cointop) toggleHelp() error {
ct.debuglog("toggleHelp()")
ct.State.helpVisible = !ct.State.helpVisible
if ct.State.helpVisible {
return ct.showHelp()
}
return ct.hideHelp()
}