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script: Abstract HTMLLinkElement and StyleElement into StylesheetOwner.

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Emilio Cobos Álvarez 2016-12-16 16:39:58 +01:00
parent 072db0279a
commit b9901fbd89
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4 changed files with 117 additions and 91 deletions
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15
components/script/dom/element.rs
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@ -51,9 +51,11 @@ use dom::htmlimageelement::{HTMLImageElement, LayoutHTMLImageElementHelpers};
use dom::htmlinputelement::{HTMLInputElement, LayoutHTMLInputElementHelpers};
use dom::htmllabelelement::HTMLLabelElement;
use dom::htmllegendelement::HTMLLegendElement;
use dom::htmllinkelement::HTMLLinkElement;
use dom::htmlobjectelement::HTMLObjectElement;
use dom::htmloptgroupelement::HTMLOptGroupElement;
use dom::htmlselectelement::HTMLSelectElement;
use dom::htmlstyleelement::HTMLStyleElement;
use dom::htmltablecellelement::{HTMLTableCellElement, HTMLTableCellElementLayoutHelpers};
use dom::htmltableelement::{HTMLTableElement, HTMLTableElementLayoutHelpers};
use dom::htmltablerowelement::{HTMLTableRowElement, HTMLTableRowElementLayoutHelpers};
@ -109,6 +111,7 @@ use style::sink::Push;
use style::stylist::ApplicableDeclarationBlock;
use style::values::CSSFloat;
use style::values::specified::{self, CSSColor, CSSRGBA, LengthOrPercentage};
use stylesheet_loader::StylesheetOwner;
// TODO: Update focus state when the top-level browsing context gains or loses system focus,
// and when the element enters or leaves a browsing context container.
@ -2407,6 +2410,18 @@ impl Element {
})
}
pub fn as_stylesheet_owner(&self) -> Option<&StylesheetOwner> {
if let Some(s) = self.downcast::<HTMLStyleElement>() {
return Some(s as &StylesheetOwner)
}
if let Some(l) = self.downcast::<HTMLLinkElement>() {
return Some(l as &StylesheetOwner)
}
None
}
// https://html.spec.whatwg.org/multipage/#category-submit
pub fn as_maybe_validatable(&self) -> Option<&Validatable> {
let element = match self.upcast::<Node>().type_id() {