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Implement HTMLElement.dataset

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Make DOMStringMap use related Element's custom attributes values.
This commit is contained in:
Bruno de Oliveira Abinader 2014-11-19 11:57:39 -04:00
parent e1a7d99df7
commit 628ee92d73
4 changed files with 79 additions and 18 deletions
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57
components/script/dom/htmlelement.rs
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@ -13,10 +13,13 @@ use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLFrameSetElementDeriv
use dom::bindings::codegen::InheritTypes::{EventTargetCast, HTMLInputElementCast};
use dom::bindings::codegen::InheritTypes::{HTMLElementDerived, HTMLBodyElementDerived};
use dom::bindings::js::{JSRef, Temporary, MutNullableJS};
use dom::bindings::error::ErrorResult;
use dom::bindings::error::Error::Syntax;
use dom::bindings::utils::{Reflectable, Reflector};
use dom::cssstyledeclaration::CSSStyleDeclaration;
use dom::document::Document;
use dom::element::{Element, ElementTypeId, ActivationElementHelpers};
use dom::domstringmap::DOMStringMap;
use dom::element::{Element, ElementTypeId, ActivationElementHelpers, AttributeHandlers};
use dom::eventtarget::{EventTarget, EventTargetHelpers, EventTargetTypeId};
use dom::node::{Node, NodeTypeId, window_from_node};
use dom::virtualmethods::VirtualMethods;
@ -31,6 +34,7 @@ use std::default::Default;
pub struct HTMLElement {
element: Element,
style_decl: MutNullableJS<CSSStyleDeclaration>,
dataset: MutNullableJS<DOMStringMap>,
}
impl HTMLElementDerived for EventTarget {
@ -48,6 +52,7 @@ impl HTMLElement {
HTMLElement {
element: Element::new_inherited(type_id, tag_name, ns!(HTML), prefix, document),
style_decl: Default::default(),
dataset: Default::default(),
}
}
@ -89,6 +94,11 @@ impl<'a> HTMLElementMethods for JSRef<'a, HTMLElement> {
global_event_handlers!(NoOnload)
// https://html.spec.whatwg.org/multipage/dom.html#dom-dataset
fn Dataset(self) -> Temporary<DOMStringMap> {
self.dataset.or_init(|| DOMStringMap::new(self))
}
fn GetOnload(self) -> Option<EventHandlerNonNull> {
if self.is_body_or_frameset() {
let win = window_from_node(self).root();
@ -122,6 +132,51 @@ impl<'a> HTMLElementMethods for JSRef<'a, HTMLElement> {
}
}
// 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-".into_string();
for ch in name.as_slice().chars() {
if ch.is_uppercase() {
attr_name.push('\x2d');
attr_name.push(ch.to_lowercase());
} else {
attr_name.push(ch);
}
}
attr_name
}
impl<'a> HTMLElementCustomAttributeHelpers for JSRef<'a, HTMLElement> {
fn set_custom_attr(self, name: DOMString, value: DOMString) -> ErrorResult {
if name.as_slice().chars()
.skip_while(|&ch| ch != '\u002d')
.nth(1).map_or(false, |ch| ch as u8 - b'a' < 26) {
return Err(Syntax);
}
let element: JSRef<Element> = ElementCast::from_ref(self);
element.set_custom_attribute(to_snake_case(name), value)
}
fn get_custom_attr(self, name: DOMString) -> Option<DOMString> {
let element: JSRef<Element> = ElementCast::from_ref(self);
element.get_attribute(ns!(""), &Atom::from_slice(to_snake_case(name).as_slice())).map(|attr| {
let attr = attr.root();
attr.value().as_slice().to_string()
})
}
fn delete_custom_attr(self, name: DOMString) {
let element: JSRef<Element> = ElementCast::from_ref(self);
element.remove_attribute(ns!(""), to_snake_case(name).as_slice())
}
}
impl<'a> VirtualMethods for JSRef<'a, HTMLElement> {
fn super_type<'a>(&'a self) -> Option<&'a VirtualMethods> {
let element: &JSRef<Element> = ElementCast::from_borrowed_ref(self);