// Form returns the form in the current page that matches the given expr.
func (bow *Browser) Form(expr string) (Submittable, error) {
sel := bow.Find(expr)
if sel.Length() == 0 {
return nil, errors.NewElementNotFound(
"Form not found matching expr '%s'.", expr)
}
if !sel.Is("form") {
return nil, errors.NewElementNotFound(
"Expr '%s' does not match a form tag.", expr)
}
return NewForm(bow, sel), nil
}
// Click clicks on the page element matched by the given expression.
//
// Currently this is only useful for click on links, which will cause the browser
// to load the page pointed at by the link. Future versions of Surf may support
// JavaScript and clicking on elements will fire the click event.
func (bow *Browser) Click(expr string) error {
sel := bow.Find(expr)
if sel.Length() == 0 {
return errors.NewElementNotFound(
"Element not found matching expr '%s'.", expr)
}
if !sel.Is("a") {
return errors.NewElementNotFound(
"Expr '%s' must match an anchor tag.", expr)
}
href, err := bow.attrToResolvedUrl("href", sel)
if err != nil {
return err
}
return bow.httpGET(href, bow.Url())
}
// Input sets the value of a form field.
func (f *Form) Input(name, value string) error {
found := false
for _, f := range f.fields {
if f.name == name {
f.value = value
found = true
}
}
for _, c := range f.checkboxes {
if c.name == name && c.value == value {
if c.checked {
c.checked = false
} else {
c.checked = true
}
found = true
}
}
if found {
return nil
}
return errors.NewElementNotFound(
"No input found with name '%s'.", name)
}