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Implements the :checked pseudo-class for inputs

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Relevant spec:
https://html.spec.whatwg.org/multipage/scripting.html#selector-checked

Also modifies HTMLInputElement::SetChecked to no longer modify its
checked content value, instead making use of its internal checkedness
state now that we can match `:checked` properly.
This commit is contained in:
Matthew Rasmus 2014-12-02 17:06:30 -08:00
parent 9ac817523c
commit 1b84bd22b8
7 changed files with 47 additions and 4 deletions
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19
components/script/dom/element.rs
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@ -13,6 +13,7 @@ use dom::bindings::codegen::Bindings::AttrBinding::AttrMethods;
use dom::bindings::codegen::Bindings::ElementBinding;
use dom::bindings::codegen::Bindings::ElementBinding::ElementMethods;
use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
use dom::bindings::codegen::Bindings::HTMLInputElementBinding::HTMLInputElementMethods;
use dom::bindings::codegen::Bindings::NamedNodeMapBinding::NamedNodeMapMethods;
use dom::bindings::codegen::InheritTypes::{ElementDerived, HTMLInputElementDerived, HTMLTableCellElementDerived};
use dom::bindings::codegen::InheritTypes::{HTMLInputElementCast, NodeCast, EventTargetCast, ElementCast};
@ -198,6 +199,7 @@ pub trait RawLayoutElementHelpers {
-> LengthOrPercentageOrAuto;
unsafe fn get_integer_attribute_for_layout(&self, integer_attribute: IntegerAttribute)
-> Option<i32>;
unsafe fn get_checked_state_for_layout(&self) -> bool;
fn local_name<'a>(&'a self) -> &'a Atom;
fn namespace<'a>(&'a self) -> &'a Namespace;
fn style_attribute<'a>(&'a self) -> &'a DOMRefCell<Option<style::PropertyDeclarationBlock>>;
@ -313,6 +315,17 @@ impl RawLayoutElementHelpers for Element {
}
}
#[inline]
#[allow(unrooted_must_root)]
unsafe fn get_checked_state_for_layout(&self) -> bool {
// TODO option and menuitem can also have a checked state.
if !self.is_htmlinputelement() {
return false
}
let this: &HTMLInputElement = mem::transmute(self);
this.get_checked_state_for_layout()
}
// Getters used in components/layout/wrapper.rs
fn local_name<'a>(&'a self) -> &'a Atom {
@ -1156,6 +1169,12 @@ impl<'a> style::TElement<'a> for JSRef<'a, Element> {
let node: JSRef<Node> = NodeCast::from_ref(self);
node.get_enabled_state()
}
fn get_checked_state(self) -> bool {
match HTMLInputElementCast::to_ref(self) {
Some(input) => input.Checked(),
None => false,
}
}
fn has_class(self, name: &Atom) -> bool {
// FIXME(zwarich): Remove this when UFCS lands and there is a better way
// of disambiguating methods.