Did a lot of work off-repo, basically init

ui/button.go

@@ -0,0 +1,79 @@
+package ui
+
+import (
+	"fmt"
+
+	"github.com/gdamore/tcell/v2"
+)
+
+type Button struct {
+	Text string
+	Callback func()
+
+	x, y int
+	width, height int
+	focused bool
+
+	Theme *Theme
+}
+
+func NewButton(text string, theme *Theme, callback func()) *Button {
+	return &Button{
+		Text: text,
+		Callback: callback,
+		Theme: theme,
+	}
+}
+
+func (b *Button) Draw(s tcell.Screen) {
+	var str string
+	if b.focused {
+		str = fmt.Sprintf("🭬 %s 🭮", b.Text)
+	} else {
+		str = fmt.Sprintf("  %s  ", b.Text)
+	}
+	DrawStr(s, b.x, b.y, str, b.Theme.GetOrDefault("Button"))
+}
+
+func (b *Button) SetFocused(v bool) {
+	b.focused = v
+}
+
+func (b *Button) SetTheme(theme *Theme) {
+	b.Theme = theme
+}
+
+func (b *Button) GetPos() (int, int) {
+	return b.x, b.y
+}
+
+func (b *Button) SetPos(x, y int) {
+	b.x, b.y = x, y
+}
+
+func (b *Button) GetMinSize() (int, int) {
+	return len(b.Text) + 4, 1
+}
+
+func (b *Button) GetSize() (int, int) {
+	return b.GetMinSize()
+}
+
+func (b *Button) SetSize(width, height int) {}
+
+func (b *Button) HandleEvent(event tcell.Event) bool {
+	if b.focused {
+		switch ev := event.(type) {
+		case *tcell.EventKey:
+			if ev.Key() == tcell.KeyEnter {
+				if b.Callback != nil {
+					b.Callback()
+				}
+			}
+		default:
+			return false
+		}
+		return true
+	}
+	return false
+}