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gomponents/components/components.go
Markus Wüstenberg b12942fb32
Delete low-value helper components (#115)
I'd rather reserve the package for components that have proven
repeatedly useful, like `Classes` and `HTML5`.
2022-11-03 11:32:16 +01:00

65 lines
1.6 KiB
Go

// Package components provides high-level components and helpers that are composed of low-level elements and attributes.
package components
import (
"io"
"sort"
"strings"
g "github.com/maragudk/gomponents"
. "github.com/maragudk/gomponents/html"
)
// HTML5Props for HTML5.
// Title is set no matter what, Description and Language elements only if the strings are non-empty.
type HTML5Props struct {
Title string
Description string
Language string
Head []g.Node
Body []g.Node
}
// HTML5 document template.
func HTML5(p HTML5Props) g.Node {
return Doctype(
HTML(g.If(p.Language != "", Lang(p.Language)),
Head(
Meta(Charset("utf-8")),
Meta(Name("viewport"), Content("width=device-width, initial-scale=1")),
TitleEl(g.Text(p.Title)),
g.If(p.Description != "", Meta(Name("description"), Content(p.Description))),
g.Group(p.Head),
),
Body(g.Group(p.Body)),
),
)
}
// 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 Class(strings.Join(included, " ")).Render(w)
}
func (c Classes) Type() g.NodeType {
return g.AttributeType
}
// String satisfies fmt.Stringer.
func (c Classes) String() string {
var b strings.Builder
_ = c.Render(&b)
return b.String()
}