62 lines
1 KiB
Go
62 lines
1 KiB
Go
package ui
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import (
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rl "github.com/gen2brain/raylib-go/raylib"
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)
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type OnSelectCallback func()
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type Menu struct {
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selected int
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entries []Widget
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onSelect OnSelectCallback
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}
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func NewMenu(entries []Widget) *Menu {
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return &Menu{
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entries: entries,
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onSelect: func() {},
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}
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}
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func (menu *Menu) OnSelect(callback OnSelectCallback) *Menu {
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menu.onSelect = callback
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return menu
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}
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func (menu Menu) Entries() []Widget {
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return menu.entries
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}
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func (menu *Menu) Select(index int) {
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if index >= 0 && index < len(menu.entries) {
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menu.selected = index
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menu.onSelect()
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}
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}
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func (menu Menu) Selected() Widget {
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return menu.entries[menu.selected]
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}
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func (menu Menu) IsSelected(index int) bool {
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return menu.selected == index
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}
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func (menu *Menu) Next() {
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menu.Select(menu.selected + 1)
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}
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func (menu *Menu) Previous() {
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menu.Select(menu.selected - 1)
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}
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func (menu *Menu) HandleInput() {
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if rl.IsKeyPressed(rl.KeyDown) {
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menu.Next()
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} else if rl.IsKeyPressed(rl.KeyUp) {
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menu.Previous()
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} else {
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menu.Selected().HandleInput()
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}
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}
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