// attributeOrDefault reads an attribute and returns it or the default value when it's empty.
func (bow *Browser) attrOrDefault(name, def string, sel *goquery.Selection) string {
a, ok := sel.Attr(name)
if ok {
return a
}
return def
}
// attributeToUrl reads an attribute from an element and returns a url.
func (bow *Browser) attrToResolvedUrl(name string, sel *goquery.Selection) (*url.URL, error) {
src, ok := sel.Attr(name)
if !ok {
return nil, errors.NewAttributeNotFound(
"Attribute '%s' not found.", name)
}
ur, err := url.Parse(src)
if err != nil {
return nil, err
}
return bow.ResolveUrl(ur), nil
}
func formAttributes(bow Browsable, s *goquery.Selection) (string, string) {
method, ok := s.Attr("method")
if !ok {
method = "GET"
}
action, ok := s.Attr("action")
if !ok {
action = bow.Url().String()
}
aurl, err := url.Parse(action)
if err != nil {
return "", ""
}
aurl = bow.ResolveUrl(aurl)
return strings.ToUpper(method), aurl.String()
}
// Serialize converts the form fields into a url.Values type.
// Returns two url.Value types. The first is the form field values, and the
// second is the form button values.
func serializeForm(sel *goquery.Selection) ([]*Field, []*Checkbox, []*Button) {
var fields []*Field
var checkboxes []*Checkbox
var buttons []*Button
input := sel.Find("input,button,textarea,select")
if input.Length() > 0 {
input.Each(func(_ int, s *goquery.Selection) {
name, ok := s.Attr("name")
if ok {
typ, ok := s.Attr("type")
if s.Is("input") && ok || s.Is("textarea") {
if typ == "submit" {
val, ok := s.Attr("value")
if !ok {
val = ""
}
buttons = append(buttons, &Button{
name: name,
value: val,
})
} else if typ == "radio" {
val, ok := s.Attr("value")
if !ok {
val = ""
}
_, ok = s.Attr("checked")
if !ok {
val = ""
}
if val != "" {
fields = append(fields, &Field{
name: name,
value: val,
})
}
} else if typ == "checkbox" {
val, ok := s.Attr("value")
if !ok {
val = ""
}
checked := true
_, ok = s.Attr("checked")
if !ok {
checked = false
}
checkboxes = append(checkboxes, &Checkbox{
name: name,
value: val,
checked: checked,
})
} else {
val, ok := s.Attr("value")
if !ok {
val = ""
}
fields = append(fields, &Field{
name: name,
value: val,
})
}
} else if s.Is("select") {
options := s.Find("option")
val := ""
options.Each(func(idx int, option *goquery.Selection) {
_, ok := option.Attr("selected")
if idx == 0 || ok {
value, ok := option.Attr("value")
if ok {
val = value
}
}
})
fields = append(fields, &Field{
name: name,
value: val,
})
}
}
})
}
return fields, checkboxes, buttons
}