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

52 lines
1.4 KiB
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"
"github.com/MontFerret/ferret/pkg/runtime/values/types"
)
// ATTR_SET sets or updates a single or more attribute(s) of a given element.
// @param el (HTMLElement) - Target element.
// @param nameOrObj (String | Object) - Attribute name or an object representing a key-value pair of attributes.
// @param value (String) - If a second parameter is a string value, this parameter represent an attribute value.
func AttributeSet(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
}
switch arg1 := args[1].(type) {
case values.String:
// ATTR_SET(el, name, value)
err = core.ValidateArgs(args, 3, 3)
if err != nil {
return values.None, nil
}
arg2, ok := args[2].(values.String)
if !ok {
return values.None, core.TypeError(arg1.Type(), types.String, types.Object)
}
return values.None, el.SetAttribute(ctx, arg1, arg2)
case *values.Object:
// ATTR_SET(el, values)
return values.None, el.SetAttributes(ctx, arg1)
default:
return values.None, core.TypeError(arg1.Type(), types.String, types.Object)
}
}