102 lines
2.5 KiB
Go
102 lines
2.5 KiB
Go
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package tui
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import (
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_ "embed"
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"fmt"
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"strings"
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"github.com/gdamore/tcell/v2"
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"github.com/rivo/tview"
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)
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var (
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//go:embed help-pages/hotkeys.txt
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hotkeysHelpText string
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//go:embed help-pages/searching.txt
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searchingHelpText string
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)
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type HelpPage struct {
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*tview.Box
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pages []*tview.TextView
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currentPage int
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filters []string
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filterHints map[string]string
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}
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func NewHelpPage(filters []string, hints map[string]string) *HelpPage {
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hp := &HelpPage{
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Box: tview.NewBox(),
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filters: filters,
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filterHints: hints,
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}
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page := tview.NewTextView().
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SetDynamicColors(true).
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SetText(hotkeysHelpText)
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hp.addPage(page)
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page = tview.NewTextView().
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SetDynamicColors(true).
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SetText(fmt.Sprintf(searchingHelpText, hp.getFiltersText()))
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hp.addPage(page)
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return hp
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}
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func (hp *HelpPage) addPage(page *tview.TextView) {
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hp.pages = append(hp.pages, page)
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}
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func (hp *HelpPage) getFiltersText() string {
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if len(hp.filters) == 0 {
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return "\t\tNo filters defined.\n"
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}
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filtersText := strings.Builder{}
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gapSize := 4
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tagMaxWidth := 3
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for _, filter := range hp.filters {
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tagMaxWidth = max(tagMaxWidth, len(filter))
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}
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filtersText.WriteString("\t\t[yellow::b]Tag")
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filtersText.WriteString(strings.Repeat(" ", gapSize))
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filtersText.WriteString("\tValue[-::-]\n\n")
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for _, filter := range hp.filters {
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filtersText.WriteString("\t\t")
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filtersText.WriteString(filter)
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filtersText.WriteString(strings.Repeat(" ", tagMaxWidth-len(filter)+gapSize))
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filtersText.WriteString(hp.filterHints[filter])
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filtersText.WriteRune('\n')
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}
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return filtersText.String()
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}
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func (hp *HelpPage) Draw(screen tcell.Screen) {
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x, y, width, height := hp.GetInnerRect()
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hp.pages[hp.currentPage].SetRect(x+1, y+1, width-2, height-2)
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hp.pages[hp.currentPage].Draw(screen)
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}
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func (hp *HelpPage) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
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return hp.WrapInputHandler(func(event *tcell.EventKey, _ func(tview.Primitive)) {
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if event.Key() == tcell.KeyEnter {
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hp.currentPage++
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hp.currentPage %= len(hp.pages)
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return
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}
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hp.pages[hp.currentPage].InputHandler()(event, func(tview.Primitive) {})
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})
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}
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func (hp *HelpPage) MouseHandler() func(action tview.MouseAction, event *tcell.EventMouse, setFocus func(p tview.Primitive)) (consumed bool, capture tview.Primitive) {
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return hp.WrapMouseHandler(func(action tview.MouseAction, event *tcell.EventMouse, _ func(tview.Primitive)) (consumed bool, capture tview.Primitive) {
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return hp.pages[hp.currentPage].MouseHandler()(action, event, func(tview.Primitive) {})
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})
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}
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