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selector.go
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selector.go
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package survey
import "fmt"
type Selector interface {
Key() string
}
type ListSelector struct {
title string
items []string
itemsMap map[string]Selector
}
func NewListSelector(title string) *ListSelector {
return &ListSelector{
title: title,
items: []string{},
itemsMap: map[string]Selector{},
}
}
func (ls *ListSelector) AddItems(items ...Selector) *ListSelector {
for _, item := range items {
ls.items = append(ls.items, item.Key())
ls.itemsMap[item.Key()] = item
}
return ls
}
func (ls *ListSelector) Render() (Selector, error) {
if len(ls.items) == 0 {
return nil, nil
}
val := ""
err := NewString().
SetKind("string").
SetName("menu").
SetMessage(ls.title).
SetDefault(ls.items[0]).
SetRequired(true).
SetOptions(ls.items).
Render(&val)
if err != nil {
return nil, err
}
s, ok := ls.itemsMap[val]
if !ok {
return nil, fmt.Errorf("obejct for %s not found", val)
}
return s, nil
}