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@ -11,6 +11,7 @@ import (
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type Drawable interface {
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Draw(tcell.Screen)
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SetSize(x, y, h, w int)
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SetStyle(tcell.Style)
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}
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type Offsets struct {
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@ -34,6 +35,11 @@ const (
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LayoutVerticalPercent
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)
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var (
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StyleActive = tcell.Style(0).Foreground(tcell.ColorWhite).Background(tcell.ColorBlack)
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StyleInactive = tcell.Style(0).Foreground(tcell.ColorGray).Background(tcell.ColorBlack)
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)
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// A Container has no visible UI of its own, but arranges sub-components on the screen.
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// layoutMethod manages how subcomponents are organized. If `LayoutUnmanaged`, it just uses the offsets
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// in contents to paint on the screen. Otherwise, `LayoutHorizontalEven` and `LayoutVerticalEven` will
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@ -155,6 +161,10 @@ func (c *Container) SetSize(x, y, h, w int) {
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}
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}
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func (c *Container) SetStyle(s tcell.Style) {
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// containers have no visible elements to style
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}
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func (c *Container) Contents() Contents {
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return c.contents
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}
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@ -170,13 +180,17 @@ type Box struct {
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title Drawable
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menuItems Drawable
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contents Contents
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style tcell.Style
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cascade bool
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}
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func NewBox(title string, menuItems []string, contents Contents) *Box {
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func NewBox(title string, menuItems []string, contents Contents, initialStyle tcell.Style, cascade bool) *Box {
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return &Box{
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title: NewPaddedText(title),
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menuItems: NewPaddedText(strings.Join(menuItems, " ")),
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contents: contents,
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style: initialStyle,
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cascade: cascade,
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}
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}
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@ -195,17 +209,17 @@ func (b *Box) SetSize(x, y, h, w int) {
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func (b *Box) Draw(s tcell.Screen) {
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for m := b.x + 1; m < b.x+b.w-1; m++ {
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s.SetContent(m, b.y, tcell.RuneHLine, nil, tcell.StyleDefault)
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s.SetContent(m, b.y+b.h-1, tcell.RuneHLine, nil, tcell.StyleDefault)
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s.SetContent(m, b.y, tcell.RuneHLine, nil, b.style)
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s.SetContent(m, b.y+b.h-1, tcell.RuneHLine, nil, b.style)
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}
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for m := b.y + 1; m < b.y+b.h-1; m++ {
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s.SetContent(b.x, m, tcell.RuneVLine, nil, tcell.StyleDefault)
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s.SetContent(b.x+b.w-1, m, tcell.RuneVLine, nil, tcell.StyleDefault)
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s.SetContent(b.x, m, tcell.RuneVLine, nil, b.style)
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s.SetContent(b.x+b.w-1, m, tcell.RuneVLine, nil, b.style)
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}
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s.SetContent(b.x, b.y, tcell.RuneULCorner, nil, tcell.StyleDefault)
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s.SetContent(b.x+b.w-1, b.y, tcell.RuneURCorner, nil, tcell.StyleDefault)
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s.SetContent(b.x, b.y+b.h-1, tcell.RuneLLCorner, nil, tcell.StyleDefault)
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s.SetContent(b.x+b.w-1, b.y+b.h-1, tcell.RuneLRCorner, nil, tcell.StyleDefault)
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s.SetContent(b.x, b.y, tcell.RuneULCorner, nil, b.style)
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s.SetContent(b.x+b.w-1, b.y, tcell.RuneURCorner, nil, b.style)
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s.SetContent(b.x, b.y+b.h-1, tcell.RuneLLCorner, nil, b.style)
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s.SetContent(b.x+b.w-1, b.y+b.h-1, tcell.RuneLRCorner, nil, b.style)
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if b.title != nil {
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b.title.Draw(s)
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@ -218,6 +232,17 @@ func (b *Box) Draw(s tcell.Screen) {
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}
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}
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func (b *Box) SetStyle(s tcell.Style) {
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b.style = s
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b.title.SetStyle(s)
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b.menuItems.SetStyle(s)
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if b.cascade {
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for c := range b.contents {
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b.contents[c].Container.SetStyle(s)
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}
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}
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}
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func (b *Box) Contents() Contents {
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return b.contents
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}
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@ -232,6 +257,7 @@ type List struct {
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h, w int
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selected int
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listItems []ListKeyValue
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style tcell.Style
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}
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type ListKeyValue struct {
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@ -253,14 +279,18 @@ func (l *List) SetSize(x, y, h, w int) {
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func (l *List) Draw(s tcell.Screen) {
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for i := range l.listItems {
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for j, r := range l.listItems[i].Value {
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s.SetContent(l.x+j, l.y+i, r, nil, tcell.StyleDefault)
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s.SetContent(l.x+j, l.y+i, r, nil, l.style)
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}
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if i == l.selected {
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s.SetContent(l.x+len(l.listItems[i].Value)+1, l.y+i, '<', nil, tcell.StyleDefault)
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s.SetContent(l.x+len(l.listItems[i].Value)+1, l.y+i, '<', nil, l.style)
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}
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}
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}
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func (l *List) SetStyle(s tcell.Style) {
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l.style = s
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}
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func (l *List) Selected() int {
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return l.selected
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}
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@ -279,9 +309,10 @@ func (l *List) ListMembers() []ListKeyValue {
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// BookDetails displays an editable list of book details
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type BookDetails struct {
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x, y int
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h, w int
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book *book.Book
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x, y int
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h, w int
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book *book.Book
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style tcell.Style
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}
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func NewBookDetails(b *book.Book) *BookDetails {
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@ -327,17 +358,23 @@ func (l *BookDetails) Draw(s tcell.Screen) {
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if i < l.h-2 {
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kv := NewKeyValue(items[i].label, ": ", items[i].value)
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kv.SetSize(l.x, l.y+i, 0, 0)
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kv.SetStyle(l.style)
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kv.Draw(s)
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}
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}
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}
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func (l *BookDetails) SetStyle(s tcell.Style) {
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l.style = s
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}
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// PaddedText outputs strings with a space on both sides.
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// Useful for generating headings, footers, etc. Used by Box.
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type PaddedText struct {
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x, y int
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h, w int
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text string
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x, y int
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h, w int
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text string
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style tcell.Style
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}
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func NewPaddedText(text string) *PaddedText {
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@ -348,18 +385,22 @@ func (p *PaddedText) SetSize(x, y, _, _ int) {
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p.x, p.y, p.h, p.w = x, y, 1, len(p.text)+2
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}
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func (p *PaddedText) SetStyle(s tcell.Style) {
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p.style = s
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}
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func (p *PaddedText) Draw(s tcell.Screen) {
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if p.text == "" {
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return
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}
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t := p.x
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s.SetContent(t, p.y, ' ', nil, tcell.StyleDefault)
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s.SetContent(t, p.y, ' ', nil, p.style)
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t++
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for _, r := range p.text {
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s.SetContent(t, p.y, r, nil, tcell.StyleDefault)
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s.SetContent(t, p.y, r, nil, p.style)
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t++
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}
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s.SetContent(t, p.y, ' ', nil, tcell.StyleDefault)
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s.SetContent(t, p.y, ' ', nil, p.style)
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}
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type KeyValue struct {
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@ -368,6 +409,7 @@ type KeyValue struct {
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key string
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value string
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separator string
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style tcell.Style
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}
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func NewKeyValue(key, separator, value string) *KeyValue {
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@ -382,15 +424,19 @@ func (p *KeyValue) SetSize(x, y, _, _ int) {
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p.x, p.y, p.h, p.w = x, y, 1, len(p.key)+len(p.separator)+len(p.value)
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}
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func (p *KeyValue) SetStyle(s tcell.Style) {
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p.style = s
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}
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func (p *KeyValue) Draw(s tcell.Screen) {
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for j, r := range p.key {
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s.SetContent(p.x+j, p.y, r, nil, tcell.StyleDefault)
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s.SetContent(p.x+j, p.y, r, nil, p.style)
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}
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for j, r := range p.separator {
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s.SetContent(p.x+len(p.key)+j, p.y, r, nil, tcell.StyleDefault)
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s.SetContent(p.x+len(p.key)+j, p.y, r, nil, p.style)
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}
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for j, r := range p.value {
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s.SetContent(p.x+len(p.key)+len(p.separator)+j, p.y, r, nil, tcell.StyleDefault)
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s.SetContent(p.x+len(p.key)+len(p.separator)+j, p.y, r, nil, p.style)
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}
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}
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