Improve inter-document focus handling (#36649)

*Describe the changes that this pull request makes here. This will be
the commit message.*
rewritten the PR #28571
Implement
[Window#focus](https://html.spec.whatwg.org/multipage/#dom-window-focus),
[Window#blur](https://html.spec.whatwg.org/multipage/#dom-window-blur)
Testing: WPT
Fixes: #8981 #9421

---------

Signed-off-by: kongbai1996 <1782765876@qq.com>
Co-authored-by: yvt <i@yvt.jp>
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Fuguo 2025-04-30 12:37:53 +08:00 committed by GitHub
parent 27570987fd
commit 0c0ee04b8e
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33 changed files with 1123 additions and 242 deletions

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@ -32,7 +32,7 @@ use crate::dom::bindings::str::DOMString;
use crate::dom::characterdata::CharacterData;
use crate::dom::cssstyledeclaration::{CSSModificationAccess, CSSStyleDeclaration, CSSStyleOwner};
use crate::dom::customelementregistry::CallbackReaction;
use crate::dom::document::{Document, FocusType};
use crate::dom::document::{Document, FocusInitiator};
use crate::dom::documentfragment::DocumentFragment;
use crate::dom::domstringmap::DOMStringMap;
use crate::dom::element::{AttributeMutation, Element};
@ -415,18 +415,19 @@ impl HTMLElementMethods<crate::DomTypeHolder> for HTMLElement {
// TODO: Mark the element as locked for focus and run the focusing steps.
// https://html.spec.whatwg.org/multipage/#focusing-steps
let document = self.owner_document();
document.request_focus(Some(self.upcast()), FocusType::Element, can_gc);
document.request_focus(Some(self.upcast()), FocusInitiator::Local, can_gc);
}
// https://html.spec.whatwg.org/multipage/#dom-blur
fn Blur(&self, can_gc: CanGc) {
// TODO: Run the unfocusing steps.
// TODO: Run the unfocusing steps. Focus the top-level document, not
// the current document.
if !self.as_element().focus_state() {
return;
}
// https://html.spec.whatwg.org/multipage/#unfocusing-steps
let document = self.owner_document();
document.request_focus(None, FocusType::Element, can_gc);
document.request_focus(None, FocusInitiator::Local, can_gc);
}
// https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsetparent