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package example
import (
"fmt"
"strings"
"time"
tui "github.com/grindlemire/go-tui"
)
// =============================================================================
// Struct-based component with KeyMap and Watchers
// =============================================================================
type complexApp struct {
// State
count *tui.State[int]
selected *tui.State[int]
items *tui.State[[]string]
showHeader *tui.State[bool]
showFooter *tui.State[bool]
timerSeconds *tui.State[int]
messages *tui.State[[]string]
msgCh chan string
// Refs for click handling
incrementBtn *tui.Ref
decrementBtn *tui.Ref
resetBtn *tui.Ref
itemRefs *tui.RefList
}
func ComplexApp() *complexApp {
msgCh := make(chan string, 10)
app := &complexApp{
count: tui.NewState(0),
selected: tui.NewState(0),
items: tui.NewState([]string{"Item 1", "Item 2", "Item 3"}),
showHeader: tui.NewState(true),
showFooter: tui.NewState(true),
timerSeconds: tui.NewState(0),
messages: tui.NewState([]string{}),
msgCh: msgCh,
incrementBtn: tui.NewRef(),
decrementBtn: tui.NewRef(),
resetBtn: tui.NewRef(),
itemRefs: tui.NewRefList(),
}
// Simulate background message producer
go func() {
for i := 0; ; i++ {
time.Sleep(5 * time.Second)
msgCh <- fmt.Sprintf("Message #%d received", i+1)
}
}()
return app
}
// KeyMap demonstrates the new keyboard handling API
func (c *complexApp) KeyMap() tui.KeyMap {
return tui.KeyMap{
// Quit handlers
tui.On(tui.KeyEscape, func(ke tui.KeyEvent) { ke.App().Stop() }),
tui.OnStop(tui.Rune('q'), func(ke tui.KeyEvent) { ke.App().Stop() }),
// Counter controls
tui.On(tui.Rune('+'), func(ke tui.KeyEvent) { c.count.Set(c.count.Get() + 1) }),
tui.On(tui.Rune('-'), func(ke tui.KeyEvent) { c.count.Set(c.count.Get() - 1) }),
tui.On(tui.Rune('r'), func(ke tui.KeyEvent) { c.count.Set(0) }),
// Navigation
tui.On(tui.KeyUp, func(ke tui.KeyEvent) {
if c.selected.Get() > 0 {
c.selected.Set(c.selected.Get() - 1)
}
}),
tui.On(tui.KeyDown, func(ke tui.KeyEvent) {
if c.selected.Get() < len(c.items.Get())-1 {
c.selected.Set(c.selected.Get() + 1)
}
}),
// Toggle visibility
tui.On(tui.Rune('h'), func(ke tui.KeyEvent) { c.showHeader.Set(!c.showHeader.Get()) }),
tui.On(tui.Rune('f'), func(ke tui.KeyEvent) { c.showFooter.Set(!c.showFooter.Get()) }),
// Catch-all for other runes
tui.On(tui.AnyRune, func(ke tui.KeyEvent) {
// Handle any other character input
}),
}
}
// Watchers demonstrates the new watcher API for timers and channels
func (c *complexApp) Watchers() []tui.Watcher {
return []tui.Watcher{
tui.OnTimer(time.Second, c.tick),
tui.Watch(c.msgCh, c.addMessage),
}
}
func (c *complexApp) tick() {
c.timerSeconds.Set(c.timerSeconds.Get() + 1)
}
func (c *complexApp) addMessage(msg string) {
current := c.messages.Get()
ts := time.Now().Format("15:04:05")
entry := fmt.Sprintf("[%s] %s", ts, msg)
// Keep last 5 messages
if len(current) >= 5 {
current = current[1:]
}
c.messages.Set(append(current, entry))
}
// HandleMouse demonstrates the new click handling API with refs
func (c *complexApp) HandleMouse(me tui.MouseEvent) bool {
return tui.HandleClicks(me,
tui.Click(c.incrementBtn, func() { c.count.Set(c.count.Get() + 1) }),
tui.Click(c.decrementBtn, func() { c.count.Set(c.count.Get() - 1) }),
tui.Click(c.resetBtn, func() { c.count.Set(0) }),
)
}
templ (c *complexApp) Render() {
<div class="flex-col gap-2 p-2 border-rounded border-cyan">
<span class="text-gradient-cyan-magenta font-bold">Complex Component Demo</span>
// Conditional rendering
if c.showHeader.Get() {
<div class="border-single p-1">
<span class="font-bold">Header Section</span>
</div>
}
// Counter with refs for click handling
<div class="flex-col gap-1 border-rounded p-1">
<span class="text-cyan font-bold">Counter:{fmt.Sprintf("%d", c.count.Get())}</span>
<div class="flex gap-1">
<button ref={c.incrementBtn} class="px-2">+</button>
<button ref={c.decrementBtn} class="px-2">-</button>
<button ref={c.resetBtn} class="px-2">Reset</button>
</div>
</div>
// List with selection
<div class="flex-col gap-1 border-rounded p-1">
<span class="font-bold">Items(↑/↓to navigate)</span>
for i, item := range c.items.Get() {
if i == c.selected.Get() {
<div ref={c.itemRefs} class="border-single px-1">
<span class="text-cyan font-bold">{fmt.Sprintf("> %s", item)}</span>
</div>
} else {
<span ref={c.itemRefs} class="font-dim">{fmt.Sprintf(" %s", item)}</span>
}
}
</div>
// Timer from watcher
<div class="border-rounded p-1">
<span class="font-dim">Uptime:{fmt.Sprintf("%d seconds", c.timerSeconds.Get())}</span>
</div>
// Messages from channel watcher
<div class="flex-col gap-1 border-rounded p-1">
<span class="font-bold">Live Messages</span>
for _, msg := range c.messages.Get() {
<span class="text-green">{msg}</span>
}
if len(c.messages.Get()) == 0 {
<span class="font-dim">Waitingmessages...</span>
}
</div>
// Footer with conditional
if c.showFooter.Get() {
<div class="border-single p-1">
<span class="font-dim">Footer Section</span>
</div>
} else {
<span class="font-dim">Footer hidden</span>
}
// Help text
<div class="flex-col gap-1">
<span class="font-dim">+/-counter|↑/↓navigate|h toggle header|f toggle footer|r reset|q quit</span>
</div>
</div>
}
// =============================================================================
// Simple component examples (for syntax testing)
// =============================================================================
// Let bindings
templ LetBindingExample(count int, label string) {
formattedLabel := fmt.Sprintf("%s:", strings.ToUpper(label))
countText := <span class="font-bold">{fmt.Sprintf("%d", count)}</span>
<div class="flex-col gap-1 p-1">
<span>{formattedLabel}</span>
{countText}
</div>
}
// Refs - simple, loop, keyed, conditional
templ RefsExample(items []string, users map[string]string, showWarning bool) {
container := tui.NewRef()
titleRef := tui.NewRef()
itemRefs := tui.NewRefList()
userRefs := tui.NewRefMap[string]()
warning := tui.NewRef()
<div ref={container} class="flex-col gap-1">
<span ref={titleRef} class="font-bold">Dashboard</span>
for _, item := range items {
<span ref={itemRefs}>{item}</span>
}
for id, name := range users {
<span ref={userRefs} key={id}>{name}</span>
}
if showWarning {
<div ref={warning} class="text-red border-single p-1">
<span>Warning!</span>
</div>
}
</div>
}
// Numeric values
templ NumericValues() {
<div>
<span padding={10}>Integer:{42}</span>
<span>{3.14159}</span>
<span>{0xFF}</span>
<span>{0b1010}</span>
<span>{0o755}</span>
</div>
}
// String values
templ StringValues() {
<div>
<span>{"Hello, World!"}</span>
<span>{`Raw string with newlines`}</span>
<span>{"Escaped: \n\t\""}</span>
</div>
}
// Self-closing elements
templ SelfClosing() {
<div>
<hr />
<br />
</div>
}
// Attributes with various types
templ AttributeTypes(enabled bool, size int) {
<div
border={tui.BorderDouble}
padding={2}
margin={1}
width="100%"
height={size}
class="flex-col items-center">
<span>Content</span>
</div>
}
// Helper function
func helperFunction(s string) string {
return fmt.Sprintf("[%s]", strings.ToUpper(s))
}
|