forked from mirrors/gecko-dev
ac172c1efc
The history is now recorded per frame, but needs to be exposed in a followup PR. Source-Repo: https://github.com/servo/servo Source-Revision: 1092ca10192c79b4b96c25985a2c6245d369090b
554 lines
22 KiB
Rust
554 lines
22 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
use dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
|
|
use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
|
|
use dom::bindings::codegen::Bindings::HTMLFormElementBinding;
|
|
use dom::bindings::codegen::Bindings::HTMLFormElementBinding::HTMLFormElementMethods;
|
|
use dom::bindings::codegen::Bindings::HTMLInputElementBinding::HTMLInputElementMethods;
|
|
use dom::bindings::codegen::Bindings::HTMLButtonElementBinding::HTMLButtonElementMethods;
|
|
use dom::bindings::codegen::InheritTypes::{EventTargetCast, HTMLFormElementDerived, NodeCast};
|
|
use dom::bindings::codegen::InheritTypes::{HTMLInputElementCast, HTMLTextAreaElementCast, HTMLFormElementCast};
|
|
use dom::bindings::global::GlobalRef;
|
|
use dom::bindings::js::{JSRef, Temporary, OptionalRootable};
|
|
use dom::document::{Document, DocumentHelpers};
|
|
use dom::element::{Element, AttributeHandlers};
|
|
use dom::event::{Event, EventHelpers, EventBubbles, EventCancelable};
|
|
use dom::eventtarget::{EventTarget, EventTargetTypeId};
|
|
use dom::element::ElementTypeId;
|
|
use dom::htmlelement::{HTMLElement, HTMLElementTypeId};
|
|
use dom::htmlinputelement::{HTMLInputElement, HTMLInputElementHelpers};
|
|
use dom::htmlbuttonelement::{HTMLButtonElement};
|
|
use dom::htmltextareaelement::{HTMLTextAreaElement, HTMLTextAreaElementHelpers};
|
|
use dom::node::{Node, NodeHelpers, NodeTypeId, document_from_node, window_from_node};
|
|
use hyper::method::Method;
|
|
use hyper::header::ContentType;
|
|
use hyper::mime;
|
|
use msg::constellation_msg::LoadData;
|
|
use util::str::DOMString;
|
|
use script_task::{ScriptChan, ScriptMsg};
|
|
use std::ascii::OwnedAsciiExt;
|
|
use url::UrlParser;
|
|
use url::form_urlencoded::serialize;
|
|
use string_cache::Atom;
|
|
|
|
use std::borrow::ToOwned;
|
|
use std::cell::Cell;
|
|
|
|
#[dom_struct]
|
|
pub struct HTMLFormElement {
|
|
htmlelement: HTMLElement,
|
|
marked_for_reset: Cell<bool>,
|
|
}
|
|
|
|
impl HTMLFormElementDerived for EventTarget {
|
|
fn is_htmlformelement(&self) -> bool {
|
|
*self.type_id() == EventTargetTypeId::Node(NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLFormElement)))
|
|
}
|
|
}
|
|
|
|
impl HTMLFormElement {
|
|
fn new_inherited(localName: DOMString, prefix: Option<DOMString>, document: JSRef<Document>) -> HTMLFormElement {
|
|
HTMLFormElement {
|
|
htmlelement: HTMLElement::new_inherited(HTMLElementTypeId::HTMLFormElement, localName, prefix, document),
|
|
marked_for_reset: Cell::new(false),
|
|
}
|
|
}
|
|
|
|
#[allow(unrooted_must_root)]
|
|
pub fn new(localName: DOMString, prefix: Option<DOMString>, document: JSRef<Document>) -> Temporary<HTMLFormElement> {
|
|
let element = HTMLFormElement::new_inherited(localName, prefix, document);
|
|
Node::reflect_node(box element, document, HTMLFormElementBinding::Wrap)
|
|
}
|
|
}
|
|
|
|
impl<'a> HTMLFormElementMethods for JSRef<'a, HTMLFormElement> {
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-acceptcharset
|
|
make_getter!(AcceptCharset, "accept-charset");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-acceptcharset
|
|
make_setter!(SetAcceptCharset, "accept-charset");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-action
|
|
make_url_or_base_getter!(Action);
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-action
|
|
make_setter!(SetAction, "action");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-autocomplete
|
|
make_enumerated_getter!(Autocomplete, "on", ("off"));
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-autocomplete
|
|
make_setter!(SetAutocomplete, "autocomplete");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-enctype
|
|
make_enumerated_getter!(Enctype, "application/x-www-form-urlencoded", ("text/plain") | ("multipart/form-data"));
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-enctype
|
|
make_setter!(SetEnctype, "enctype");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-encoding
|
|
fn Encoding(self) -> DOMString {
|
|
self.Enctype()
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-encoding
|
|
fn SetEncoding(self, value: DOMString) {
|
|
self.SetEnctype(value)
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-method
|
|
make_enumerated_getter!(Method, "get", ("post") | ("dialog"));
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-method
|
|
make_setter!(SetMethod, "method");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-name
|
|
make_getter!(Name);
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-name
|
|
make_setter!(SetName, "name");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-novalidate
|
|
make_bool_getter!(NoValidate);
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-novalidate
|
|
make_bool_setter!(SetNoValidate, "novalidate");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-target
|
|
make_getter!(Target);
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-fs-target
|
|
make_setter!(SetTarget, "target");
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#the-form-element:concept-form-submit
|
|
fn Submit(self) {
|
|
self.submit(SubmittedFrom::FromFormSubmitMethod, FormSubmitter::FormElement(self));
|
|
}
|
|
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-reset
|
|
fn Reset(self) {
|
|
self.reset(ResetFrom::FromFormResetMethod);
|
|
}
|
|
}
|
|
|
|
#[derive(Copy)]
|
|
pub enum SubmittedFrom {
|
|
FromFormSubmitMethod,
|
|
NotFromFormSubmitMethod
|
|
}
|
|
|
|
#[derive(Copy)]
|
|
pub enum ResetFrom {
|
|
FromFormResetMethod,
|
|
NotFromFormResetMethod
|
|
}
|
|
|
|
pub trait HTMLFormElementHelpers {
|
|
// https://html.spec.whatwg.org/multipage/forms.html#concept-form-submit
|
|
fn submit(self, submit_method_flag: SubmittedFrom, submitter: FormSubmitter);
|
|
// https://html.spec.whatwg.org/multipage/forms.html#constructing-the-form-data-set
|
|
fn get_form_dataset(self, submitter: Option<FormSubmitter>) -> Vec<FormDatum>;
|
|
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-reset
|
|
fn reset(self, submit_method_flag: ResetFrom);
|
|
}
|
|
|
|
impl<'a> HTMLFormElementHelpers for JSRef<'a, HTMLFormElement> {
|
|
fn submit(self, _submit_method_flag: SubmittedFrom, submitter: FormSubmitter) {
|
|
// Step 1
|
|
let doc = document_from_node(self).root();
|
|
let win = window_from_node(self).root();
|
|
let base = doc.r().url();
|
|
// TODO: Handle browsing contexts
|
|
// TODO: Handle validation
|
|
let event = Event::new(GlobalRef::Window(win.r()),
|
|
"submit".to_owned(),
|
|
EventBubbles::Bubbles,
|
|
EventCancelable::Cancelable).root();
|
|
let target: JSRef<EventTarget> = EventTargetCast::from_ref(self);
|
|
event.r().fire(target);
|
|
if event.r().DefaultPrevented() {
|
|
return;
|
|
}
|
|
// Step 6
|
|
let form_data = self.get_form_dataset(Some(submitter));
|
|
// Step 7-8
|
|
let mut action = submitter.action();
|
|
if action.is_empty() {
|
|
action = base.serialize();
|
|
}
|
|
// TODO: Resolve the url relative to the submitter element
|
|
// Step 10-15
|
|
let action_components = UrlParser::new().base_url(&base).parse(action.as_slice()).unwrap_or(base);
|
|
let _action = action_components.serialize();
|
|
let scheme = action_components.scheme.clone();
|
|
let enctype = submitter.enctype();
|
|
let method = submitter.method();
|
|
let _target = submitter.target();
|
|
// TODO: Handle browsing contexts, partially loaded documents (step 16-17)
|
|
|
|
let mut load_data = LoadData::new(action_components);
|
|
|
|
let parsed_data = match enctype {
|
|
FormEncType::UrlEncoded => {
|
|
let mime: mime::Mime = "application/x-www-form-urlencoded".parse().unwrap();
|
|
load_data.headers.set(ContentType(mime));
|
|
serialize(form_data.iter().map(|d| (d.name.as_slice(), d.value.as_slice())))
|
|
}
|
|
_ => "".to_owned() // TODO: Add serializers for the other encoding types
|
|
};
|
|
|
|
// Step 18
|
|
match (scheme.as_slice(), method) {
|
|
(_, FormMethod::FormDialog) => return, // Unimplemented
|
|
("http", FormMethod::FormGet) | ("https", FormMethod::FormGet) => {
|
|
load_data.url.query = Some(parsed_data);
|
|
},
|
|
("http", FormMethod::FormPost) | ("https", FormMethod::FormPost) => {
|
|
load_data.method = Method::Post;
|
|
load_data.data = Some(parsed_data.into_bytes());
|
|
},
|
|
// https://html.spec.whatwg.org/multipage/forms.html#submit-get-action
|
|
("ftp", _) | ("javascript", _) | ("data", FormMethod::FormGet) => (),
|
|
_ => return // Unimplemented (data and mailto)
|
|
}
|
|
|
|
// This is wrong. https://html.spec.whatwg.org/multipage/forms.html#planned-navigation
|
|
win.r().script_chan().send(ScriptMsg::Navigate(win.r().pipeline(), load_data)).unwrap();
|
|
}
|
|
|
|
fn get_form_dataset<'b>(self, submitter: Option<FormSubmitter<'b>>) -> Vec<FormDatum> {
|
|
fn clean_crlf(s: &str) -> DOMString {
|
|
// https://html.spec.whatwg.org/multipage/forms.html#constructing-the-form-data-set
|
|
// Step 4
|
|
let mut buf = "".to_owned();
|
|
let mut prev = ' ';
|
|
for ch in s.chars() {
|
|
match ch {
|
|
'\n' if prev != '\r' => {
|
|
buf.push('\r');
|
|
buf.push('\n');
|
|
},
|
|
'\n' => {
|
|
buf.push('\n');
|
|
},
|
|
// This character isn't LF but is
|
|
// preceded by CR
|
|
_ if prev == '\r' => {
|
|
buf.push('\r');
|
|
buf.push('\n');
|
|
buf.push(ch);
|
|
},
|
|
_ => buf.push(ch)
|
|
};
|
|
prev = ch;
|
|
}
|
|
// In case the last character was CR
|
|
if prev == '\r' {
|
|
buf.push('\n');
|
|
}
|
|
buf
|
|
}
|
|
|
|
let node: JSRef<Node> = NodeCast::from_ref(self);
|
|
// TODO: This is an incorrect way of getting controls owned
|
|
// by the form, but good enough until html5ever lands
|
|
let data_set = node.traverse_preorder().filter_map(|child| {
|
|
if child.get_disabled_state() {
|
|
return None;
|
|
}
|
|
if child.ancestors().any(|a| a.type_id() == NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLDataListElement))) {
|
|
return None;
|
|
}
|
|
// XXXManishearth don't include it if it is a button but not the submitter
|
|
match child.type_id() {
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLInputElement)) => {
|
|
let input: JSRef<HTMLInputElement> = HTMLInputElementCast::to_ref(child).unwrap();
|
|
let ty = input.Type();
|
|
let name = input.Name();
|
|
match ty.as_slice() {
|
|
"radio" | "checkbox" => {
|
|
if !input.Checked() || name.is_empty() {
|
|
return None;
|
|
}
|
|
},
|
|
"image" => (),
|
|
_ => {
|
|
if name.is_empty() {
|
|
return None;
|
|
}
|
|
}
|
|
}
|
|
|
|
let mut value = input.Value();
|
|
let is_submitter = match submitter {
|
|
Some(FormSubmitter::InputElement(s)) => {
|
|
input == s
|
|
},
|
|
_ => false
|
|
};
|
|
match ty.as_slice() {
|
|
"image" => None, // Unimplemented
|
|
"radio" | "checkbox" => {
|
|
if value.is_empty() {
|
|
value = "on".to_owned();
|
|
}
|
|
Some(FormDatum {
|
|
ty: ty,
|
|
name: name,
|
|
value: value
|
|
})
|
|
},
|
|
// Discard buttons which are not the submitter
|
|
"submit" | "button" | "reset" if !is_submitter => None,
|
|
"file" => None, // Unimplemented
|
|
_ => Some(FormDatum {
|
|
ty: ty,
|
|
name: name,
|
|
value: input.Value()
|
|
})
|
|
}
|
|
}
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLButtonElement)) => {
|
|
// Unimplemented
|
|
None
|
|
}
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLSelectElement)) => {
|
|
// Unimplemented
|
|
None
|
|
}
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLObjectElement)) => {
|
|
// Unimplemented
|
|
None
|
|
}
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTextAreaElement)) => {
|
|
// Unimplemented
|
|
None
|
|
}
|
|
_ => None
|
|
}
|
|
});
|
|
// TODO: Handle `dirnames` (needs directionality support)
|
|
// https://html.spec.whatwg.org/multipage/dom.html#the-directionality
|
|
let mut ret: Vec<FormDatum> = data_set.collect();
|
|
for datum in ret.iter_mut() {
|
|
match datum.ty.as_slice() {
|
|
"file" | "textarea" => (),
|
|
_ => {
|
|
datum.name = clean_crlf(datum.name.as_slice());
|
|
datum.value = clean_crlf(datum.value.as_slice());
|
|
}
|
|
}
|
|
};
|
|
ret
|
|
}
|
|
|
|
fn reset(self, _reset_method_flag: ResetFrom) {
|
|
// https://html.spec.whatwg.org/multipage/forms.html#locked-for-reset
|
|
if self.marked_for_reset.get() {
|
|
return;
|
|
} else {
|
|
self.marked_for_reset.set(true);
|
|
}
|
|
|
|
let win = window_from_node(self).root();
|
|
let event = Event::new(GlobalRef::Window(win.r()),
|
|
"reset".to_owned(),
|
|
EventBubbles::Bubbles,
|
|
EventCancelable::Cancelable).root();
|
|
let target: JSRef<EventTarget> = EventTargetCast::from_ref(self);
|
|
event.r().fire(target);
|
|
if event.r().DefaultPrevented() {
|
|
return;
|
|
}
|
|
|
|
let node: JSRef<Node> = NodeCast::from_ref(self);
|
|
|
|
// TODO: This is an incorrect way of getting controls owned
|
|
// by the form, but good enough until html5ever lands
|
|
for child in node.traverse_preorder() {
|
|
match child.type_id() {
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLInputElement)) => {
|
|
let input: JSRef<HTMLInputElement> = HTMLInputElementCast::to_ref(child)
|
|
.unwrap();
|
|
input.reset()
|
|
}
|
|
// TODO HTMLKeygenElement unimplemented
|
|
//NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLKeygenElement)) => {
|
|
// // Unimplemented
|
|
// {}
|
|
//}
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLSelectElement)) => {
|
|
// Unimplemented
|
|
{}
|
|
}
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTextAreaElement)) => {
|
|
let textarea: JSRef<HTMLTextAreaElement> = HTMLTextAreaElementCast::to_ref(child)
|
|
.unwrap();
|
|
textarea.reset()
|
|
}
|
|
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLOutputElement)) => {
|
|
// Unimplemented
|
|
{}
|
|
}
|
|
_ => {}
|
|
}
|
|
};
|
|
self.marked_for_reset.set(false);
|
|
}
|
|
}
|
|
|
|
// TODO: add file support
|
|
pub struct FormDatum {
|
|
pub ty: DOMString,
|
|
pub name: DOMString,
|
|
pub value: DOMString
|
|
}
|
|
|
|
#[derive(Copy)]
|
|
pub enum FormEncType {
|
|
TextPlainEncoded,
|
|
UrlEncoded,
|
|
FormDataEncoded
|
|
}
|
|
|
|
#[derive(Copy)]
|
|
pub enum FormMethod {
|
|
FormGet,
|
|
FormPost,
|
|
FormDialog
|
|
}
|
|
|
|
#[derive(Copy)]
|
|
pub enum FormSubmitter<'a> {
|
|
FormElement(JSRef<'a, HTMLFormElement>),
|
|
InputElement(JSRef<'a, HTMLInputElement>),
|
|
ButtonElement(JSRef<'a, HTMLButtonElement>)
|
|
// TODO: image submit, etc etc
|
|
}
|
|
|
|
impl<'a> FormSubmitter<'a> {
|
|
fn action(&self) -> DOMString {
|
|
match *self {
|
|
FormSubmitter::FormElement(form) => form.Action(),
|
|
FormSubmitter::InputElement(input_element) => {
|
|
// FIXME(pcwalton): Make this a static atom.
|
|
input_element.get_form_attribute(&Atom::from_slice("formaction"),
|
|
|i| i.FormAction(),
|
|
|f| f.Action())
|
|
},
|
|
FormSubmitter::ButtonElement(button_element) => {
|
|
button_element.get_form_attribute(&Atom::from_slice("formaction"),
|
|
|i| i.FormAction(),
|
|
|f| f.Action())
|
|
}
|
|
}
|
|
}
|
|
|
|
fn enctype(&self) -> FormEncType {
|
|
let attr = match *self {
|
|
FormSubmitter::FormElement(form) => form.Enctype(),
|
|
FormSubmitter::InputElement(input_element) => {
|
|
// FIXME(pcwalton): Make this a static atom.
|
|
input_element.get_form_attribute(&Atom::from_slice("formenctype"),
|
|
|i| i.FormEnctype(),
|
|
|f| f.Enctype())
|
|
},
|
|
FormSubmitter::ButtonElement(button_element) => {
|
|
button_element.get_form_attribute(&Atom::from_slice("formenctype"),
|
|
|i| i.FormAction(),
|
|
|f| f.Action())
|
|
}
|
|
};
|
|
match attr.as_slice() {
|
|
"multipart/form-data" => FormEncType::FormDataEncoded,
|
|
"text/plain" => FormEncType::TextPlainEncoded,
|
|
// https://html.spec.whatwg.org/multipage/forms.html#attr-fs-enctype
|
|
// urlencoded is the default
|
|
_ => FormEncType::UrlEncoded
|
|
}
|
|
}
|
|
|
|
fn method(&self) -> FormMethod {
|
|
let attr = match *self {
|
|
FormSubmitter::FormElement(form) => form.Method(),
|
|
FormSubmitter::InputElement(input_element) => {
|
|
// FIXME(pcwalton): Make this a static atom.
|
|
input_element.get_form_attribute(&Atom::from_slice("formmethod"),
|
|
|i| i.FormMethod(),
|
|
|f| f.Method())
|
|
},
|
|
FormSubmitter::ButtonElement(button_element) => {
|
|
button_element.get_form_attribute(&Atom::from_slice("formmethod"),
|
|
|i| i.FormAction(),
|
|
|f| f.Action())
|
|
}
|
|
};
|
|
match attr.as_slice() {
|
|
"dialog" => FormMethod::FormDialog,
|
|
"post" => FormMethod::FormPost,
|
|
_ => FormMethod::FormGet
|
|
}
|
|
}
|
|
|
|
fn target(&self) -> DOMString {
|
|
match *self {
|
|
FormSubmitter::FormElement(form) => form.Target(),
|
|
FormSubmitter::InputElement(input_element) => {
|
|
// FIXME(pcwalton): Make this a static atom.
|
|
input_element.get_form_attribute(&Atom::from_slice("formtarget"),
|
|
|i| i.FormTarget(),
|
|
|f| f.Target())
|
|
},
|
|
FormSubmitter::ButtonElement(button_element) => {
|
|
button_element.get_form_attribute(&Atom::from_slice("formtarget"),
|
|
|i| i.FormAction(),
|
|
|f| f.Action())
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub trait FormControl<'a> : Copy + Sized {
|
|
// FIXME: This is wrong (https://github.com/servo/servo/issues/3553)
|
|
// but we need html5ever to do it correctly
|
|
fn form_owner(self) -> Option<Temporary<HTMLFormElement>> {
|
|
// https://html.spec.whatwg.org/multipage/forms.html#reset-the-form-owner
|
|
let elem = self.to_element();
|
|
let owner = elem.get_string_attribute(&atom!("form"));
|
|
if !owner.is_empty() {
|
|
let doc = document_from_node(elem).root();
|
|
let owner = doc.r().GetElementById(owner).root();
|
|
match owner {
|
|
Some(o) => {
|
|
let maybe_form: Option<JSRef<HTMLFormElement>> = HTMLFormElementCast::to_ref(o.r());
|
|
if maybe_form.is_some() {
|
|
return maybe_form.map(Temporary::from_rooted);
|
|
}
|
|
},
|
|
_ => ()
|
|
}
|
|
}
|
|
let node: JSRef<Node> = NodeCast::from_ref(elem);
|
|
node.ancestors().filter_map(|a| HTMLFormElementCast::to_ref(a)).next()
|
|
.map(Temporary::from_rooted)
|
|
}
|
|
|
|
fn get_form_attribute<InputFn, OwnerFn>(self,
|
|
attr: &Atom,
|
|
input: InputFn,
|
|
owner: OwnerFn)
|
|
-> DOMString
|
|
where InputFn: Fn(Self) -> DOMString,
|
|
OwnerFn: Fn(JSRef<HTMLFormElement>) -> DOMString
|
|
{
|
|
if self.to_element().has_attribute(attr) {
|
|
input(self)
|
|
} else {
|
|
self.form_owner().map_or("".to_owned(), |t| owner(t.root().r()))
|
|
}
|
|
}
|
|
|
|
fn to_element(self) -> JSRef<'a, Element>;
|
|
}
|