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ferret/pkg/stdlib/html/style_get.go
2019-09-07 14:03:17 -04:00

46 lines
950 B
Go

package html
import (
"context"
"github.com/MontFerret/ferret/pkg/drivers"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
)
// STYLE_GET gets single or more style attribute value(s) of a given element.
// @param el (HTMLElement) - Target element.
// @param names (...String) - Style name(s).
// @returns Object - Key-value pairs of style values.
func StyleGet(ctx context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 2, core.MaxArgs)
if err != nil {
return values.None, err
}
el, err := drivers.ToElement(args[0])
if err != nil {
return values.None, err
}
names := args[1:]
result := values.NewObject()
for _, n := range names {
name := values.NewString(n.String())
val, err := el.GetStyle(ctx, name)
if err != nil {
return values.None, err
}
if val != values.None {
result.Set(name, val)
}
}
return result, nil
}