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// Package attr provides shortcuts and helpers to common HTML attributes.
// See https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes for a list of attributes.
package attr
import (
"io"
"sort"
"strings"
g "github.com/maragudk/gomponents"
)
// Classes is a map of strings to booleans, which Renders to an attribute with name "class".
// The attribute value is a sorted, space-separated string of all the map keys,
// for which the corresponding map value is true.
type Classes map[string]bool
func (c Classes) Render(w io.Writer) error {
var included []string
for c, include := range c {
if include {
included = append(included, c)
}
}
sort.Strings(included)
return g.Attr("class", strings.Join(included, " ")).Render(w)
}
func (c Classes) Place() g.Placement {
return g.Inside
}
// String satisfies fmt.Stringer.
func (c Classes) String() string {
var b strings.Builder
_ = c.Render(&b)
return b.String()
}
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