servo/components/script/dom/htmlelement.rs
2015-07-01 18:27:06 -04:00

403 lines
14 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::attr::Attr;
use dom::attr::AttrHelpers;
use dom::attr::AttrValue;
use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
use dom::bindings::codegen::Bindings::HTMLElementBinding;
use dom::bindings::codegen::Bindings::HTMLElementBinding::HTMLElementMethods;
use dom::bindings::codegen::Bindings::HTMLInputElementBinding::HTMLInputElementMethods;
use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLFrameSetElementDerived};
use dom::bindings::codegen::InheritTypes::{EventTargetCast, HTMLInputElementCast, NodeCast};
use dom::bindings::codegen::InheritTypes::{HTMLElementDerived, HTMLBodyElementDerived};
use dom::bindings::js::{JS, MutNullableHeap, Root};
use dom::bindings::error::ErrorResult;
use dom::bindings::error::Error::Syntax;
use dom::bindings::utils::Reflectable;
use dom::cssstyledeclaration::{CSSStyleDeclaration, CSSModificationAccess};
use dom::document::{Document, DocumentHelpers};
use dom::domstringmap::DOMStringMap;
use dom::element::{Element, ElementTypeId, ActivationElementHelpers, AttributeHandlers};
use dom::eventtarget::{EventTarget, EventTargetHelpers, EventTargetTypeId};
use dom::htmlinputelement::HTMLInputElement;
use dom::htmlmediaelement::HTMLMediaElementTypeId;
use dom::htmltablecellelement::HTMLTableCellElementTypeId;
use dom::node::{Node, NodeHelpers, NodeTypeId, document_from_node, window_from_node, SEQUENTIALLY_FOCUSABLE};
use dom::virtualmethods::VirtualMethods;
use dom::window::WindowHelpers;
use msg::constellation_msg::FocusType;
use util::str::DOMString;
use string_cache::Atom;
use std::borrow::ToOwned;
use std::default::Default;
use std::intrinsics;
use std::rc::Rc;
#[dom_struct]
pub struct HTMLElement {
element: Element,
style_decl: MutNullableHeap<JS<CSSStyleDeclaration>>,
dataset: MutNullableHeap<JS<DOMStringMap>>,
}
impl PartialEq for HTMLElement {
fn eq(&self, other: &HTMLElement) -> bool {
self as *const HTMLElement == &*other
}
}
impl HTMLElementDerived for EventTarget {
fn is_htmlelement(&self) -> bool {
match *self.type_id() {
EventTargetTypeId::Node(NodeTypeId::Element(ElementTypeId::HTMLElement(_))) => true,
_ => false
}
}
}
impl HTMLElement {
pub fn new_inherited(type_id: HTMLElementTypeId,
tag_name: DOMString,
prefix: Option<DOMString>,
document: &Document) -> HTMLElement {
HTMLElement {
element:
Element::new_inherited(ElementTypeId::HTMLElement(type_id), tag_name, ns!(HTML), prefix, document),
style_decl: Default::default(),
dataset: Default::default(),
}
}
#[allow(unrooted_must_root)]
pub fn new(localName: DOMString, prefix: Option<DOMString>, document: &Document) -> Root<HTMLElement> {
let element = HTMLElement::new_inherited(HTMLElementTypeId::HTMLElement, localName, prefix, document);
Node::reflect_node(box element, document, HTMLElementBinding::Wrap)
}
}
trait PrivateHTMLElementHelpers {
fn is_body_or_frameset(self) -> bool;
fn update_sequentially_focusable_status(self);
}
impl<'a> PrivateHTMLElementHelpers for &'a HTMLElement {
fn is_body_or_frameset(self) -> bool {
let eventtarget = EventTargetCast::from_ref(self);
eventtarget.is_htmlbodyelement() || eventtarget.is_htmlframesetelement()
}
fn update_sequentially_focusable_status(self) {
let element = ElementCast::from_ref(self);
let node = NodeCast::from_ref(self);
if element.has_attribute(&atom!("tabindex")) {
node.set_flag(SEQUENTIALLY_FOCUSABLE, true);
} else {
match node.type_id() {
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLButtonElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLSelectElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLIFrameElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTextAreaElement))
=> node.set_flag(SEQUENTIALLY_FOCUSABLE, true),
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLLinkElement)) |
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLAnchorElement)) => {
if element.has_attribute(&atom!("href")) {
node.set_flag(SEQUENTIALLY_FOCUSABLE, true);
}
},
_ => {
if let Some(attr) = element.get_attribute(&ns!(""), &atom!("draggable")) {
let attr = attr.r();
let value = attr.value();
let is_true = match *value {
AttrValue::String(ref string) => string == "true",
_ => false,
};
node.set_flag(SEQUENTIALLY_FOCUSABLE, is_true);
} else {
node.set_flag(SEQUENTIALLY_FOCUSABLE, false);
}
//TODO set SEQUENTIALLY_FOCUSABLE flag if editing host
//TODO set SEQUENTIALLY_FOCUSABLE flag if "sorting interface th elements"
},
}
}
}
}
impl<'a> HTMLElementMethods for &'a HTMLElement {
fn Style(self) -> Root<CSSStyleDeclaration> {
self.style_decl.or_init(|| {
let global = window_from_node(self);
CSSStyleDeclaration::new(global.r(), self, CSSModificationAccess::ReadWrite)
})
}
make_getter!(Title);
make_setter!(SetTitle, "title");
make_getter!(Lang);
make_setter!(SetLang, "lang");
// https://html.spec.whatwg.org/multipage/#dom-hidden
make_bool_getter!(Hidden);
make_bool_setter!(SetHidden, "hidden");
global_event_handlers!(NoOnload);
// https://html.spec.whatwg.org/multipage/#dom-dataset
fn Dataset(self) -> Root<DOMStringMap> {
self.dataset.or_init(|| DOMStringMap::new(self))
}
fn GetOnload(self) -> Option<Rc<EventHandlerNonNull>> {
if self.is_body_or_frameset() {
let win = window_from_node(self);
win.r().GetOnload()
} else {
let target = EventTargetCast::from_ref(self);
target.get_event_handler_common("load")
}
}
fn SetOnload(self, listener: Option<Rc<EventHandlerNonNull>>) {
if self.is_body_or_frameset() {
let win = window_from_node(self);
win.r().SetOnload(listener)
} else {
let target = EventTargetCast::from_ref(self);
target.set_event_handler_common("load", listener)
}
}
// https://html.spec.whatwg.org/multipage/#dom-click
fn Click(self) {
let maybe_input: Option<&HTMLInputElement> = HTMLInputElementCast::to_ref(self);
if let Some(i) = maybe_input {
if i.Disabled() {
return;
}
}
let element = ElementCast::from_ref(self);
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=27430 ?
element.as_maybe_activatable().map(|a| a.synthetic_click_activation(false, false, false, false));
}
// https://html.spec.whatwg.org/multipage/#dom-focus
fn Focus(self) {
// TODO: Mark the element as locked for focus and run the focusing steps.
// https://html.spec.whatwg.org/multipage/#focusing-steps
let element = ElementCast::from_ref(self);
let document = document_from_node(self);
let document = document.r();
document.begin_focus_transaction();
document.request_focus(element);
document.commit_focus_transaction(FocusType::Element);
}
// https://html.spec.whatwg.org/multipage/#dom-blur
fn Blur(self) {
// TODO: Run the unfocusing steps.
let node = NodeCast::from_ref(self);
if !node.get_focus_state() {
return;
}
// https://html.spec.whatwg.org/multipage/#unfocusing-steps
let document = document_from_node(self);
document.r().begin_focus_transaction();
// If `request_focus` is not called, focus will be set to None.
document.r().commit_focus_transaction(FocusType::Element);
}
}
// https://html.spec.whatwg.org/#attr-data-*
pub trait HTMLElementCustomAttributeHelpers {
fn set_custom_attr(self, name: DOMString, value: DOMString) -> ErrorResult;
fn get_custom_attr(self, name: DOMString) -> Option<DOMString>;
fn delete_custom_attr(self, name: DOMString);
}
fn to_snake_case(name: DOMString) -> DOMString {
let mut attr_name = "data-".to_owned();
for ch in name.chars() {
if ch.is_uppercase() {
attr_name.push('\x2d');
attr_name.extend(ch.to_lowercase());
} else {
attr_name.push(ch);
}
}
attr_name
}
impl<'a> HTMLElementCustomAttributeHelpers for &'a HTMLElement {
fn set_custom_attr(self, name: DOMString, value: DOMString) -> ErrorResult {
if name.chars()
.skip_while(|&ch| ch != '\u{2d}')
.nth(1).map_or(false, |ch| ch >= 'a' && ch <= 'z') {
return Err(Syntax);
}
let element = ElementCast::from_ref(self);
element.set_custom_attribute(to_snake_case(name), value)
}
fn get_custom_attr(self, local_name: DOMString) -> Option<DOMString> {
let element = ElementCast::from_ref(self);
let local_name = Atom::from_slice(&to_snake_case(local_name));
element.get_attribute(&ns!(""), &local_name).map(|attr| {
// FIXME(https://github.com/rust-lang/rust/issues/23338)
let attr = attr.r();
let value = attr.value();
(**value).to_owned()
})
}
fn delete_custom_attr(self, local_name: DOMString) {
let element = ElementCast::from_ref(self);
let local_name = Atom::from_slice(&to_snake_case(local_name));
element.remove_attribute(&ns!(""), &local_name);
}
}
impl<'a> VirtualMethods for &'a HTMLElement {
fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
let element: &&Element = ElementCast::from_borrowed_ref(self);
Some(element as &VirtualMethods)
}
fn before_remove_attr(&self, attr: &Attr) {
if let Some(ref s) = self.super_type() {
s.before_remove_attr(attr);
}
}
fn after_remove_attr(&self, name: &Atom) {
if let Some(ref s) = self.super_type() {
s.after_remove_attr(name);
}
self.update_sequentially_focusable_status();
}
fn after_set_attr(&self, attr: &Attr) {
if let Some(ref s) = self.super_type() {
s.after_set_attr(attr);
}
let name = attr.local_name();
if name.starts_with("on") {
let window = window_from_node(*self);
let (cx, url, reflector) = (window.r().get_cx(),
window.r().get_url(),
window.r().reflector().get_jsobject());
let evtarget = EventTargetCast::from_ref(*self);
evtarget.set_event_handler_uncompiled(cx, url, reflector,
&name[2..],
(**attr.value()).to_owned());
}
self.update_sequentially_focusable_status();
}
fn bind_to_tree(&self, tree_in_doc: bool) {
if let Some(ref s) = self.super_type() {
s.bind_to_tree(tree_in_doc);
}
self.update_sequentially_focusable_status();
}
}
#[derive(JSTraceable, Copy, Clone, Debug)]
pub enum HTMLElementTypeId {
HTMLElement,
HTMLAnchorElement,
HTMLAppletElement,
HTMLAreaElement,
HTMLBaseElement,
HTMLBRElement,
HTMLBodyElement,
HTMLButtonElement,
HTMLCanvasElement,
HTMLDataElement,
HTMLDataListElement,
HTMLDialogElement,
HTMLDirectoryElement,
HTMLDListElement,
HTMLDivElement,
HTMLEmbedElement,
HTMLFieldSetElement,
HTMLFontElement,
HTMLFormElement,
HTMLFrameElement,
HTMLFrameSetElement,
HTMLHRElement,
HTMLHeadElement,
HTMLHeadingElement,
HTMLHtmlElement,
HTMLIFrameElement,
HTMLImageElement,
HTMLInputElement,
HTMLLabelElement,
HTMLLegendElement,
HTMLLinkElement,
HTMLLIElement,
HTMLMapElement,
HTMLMediaElement(HTMLMediaElementTypeId),
HTMLMetaElement,
HTMLMeterElement,
HTMLModElement,
HTMLObjectElement,
HTMLOListElement,
HTMLOptGroupElement,
HTMLOptionElement,
HTMLOutputElement,
HTMLParagraphElement,
HTMLParamElement,
HTMLPreElement,
HTMLProgressElement,
HTMLQuoteElement,
HTMLScriptElement,
HTMLSelectElement,
HTMLSourceElement,
HTMLSpanElement,
HTMLStyleElement,
HTMLTableElement,
HTMLTableCaptionElement,
HTMLTableCellElement(HTMLTableCellElementTypeId),
HTMLTableColElement,
HTMLTableRowElement,
HTMLTableSectionElement,
HTMLTemplateElement,
HTMLTextAreaElement,
HTMLTimeElement,
HTMLTitleElement,
HTMLTrackElement,
HTMLUListElement,
HTMLUnknownElement,
}
impl PartialEq for HTMLElementTypeId {
#[inline]
#[allow(unsafe_code)]
fn eq(&self, other: &HTMLElementTypeId) -> bool {
match (*self, *other) {
(HTMLElementTypeId::HTMLMediaElement(this_type),
HTMLElementTypeId::HTMLMediaElement(other_type)) => {
this_type == other_type
}
(HTMLElementTypeId::HTMLTableCellElement(this_type),
HTMLElementTypeId::HTMLTableCellElement(other_type)) => {
this_type == other_type
}
(_, _) => {
unsafe {
intrinsics::discriminant_value(self) == intrinsics::discriminant_value(other)
}
}
}
}
}