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LibJS+LibWeb: Set [[CanBlock]] false to Agent for window agent

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similar-origin window agents have the [[CanBlock]] flag set to false.
Achieve this by hooking up JS's concept with an agent to HTML::Agent.
For now, this is only hooked up to the similar-origin window agent
case but should be extended to the other agent types in the future.
This commit is contained in:
Shannon Booth 2025-04-20 16:49:34 +12:00 • committed by Tim Flynn
commit e124ef52ee
Notes: github-actions[bot] 2025-04-22 15:52:53 +00:00
16 changed files with 106 additions and 44 deletions
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8
Libraries/LibWeb/HTML/Scripting/Agent.h
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@ -10,6 +10,7 @@
#include <AK/Vector.h>
#include <LibGC/Root.h>
#include <LibJS/Forward.h>
#include <LibJS/Runtime/Agent.h>
#include <LibWeb/DOM/MutationObserver.h>
#include <LibWeb/Forward.h>
#include <LibWeb/HTML/CustomElements/CustomElementReactionsStack.h>
@ -17,7 +18,7 @@
namespace Web::HTML {
// https://html.spec.whatwg.org/multipage/webappapis.html#similar-origin-window-agent
struct Agent {
struct Agent : public JS::Agent {
GC::Root<HTML::EventLoop> event_loop;
// FIXME: These should only be on similar-origin window agents, but we don't currently differentiate agent types.
@ -40,6 +41,11 @@ struct Agent {
// A similar-origin window agent's current element queue is the element queue at the top of its custom element reactions stack.
Vector<GC::Root<DOM::Element>>& current_element_queue() { return custom_element_reactions_stack.element_queue_stack.last(); }
Vector<GC::Root<DOM::Element>> const& current_element_queue() const { return custom_element_reactions_stack.element_queue_stack.last(); }
// [[CanBlock]]
virtual bool can_block() const override;
virtual void spin_event_loop_until(GC::Root<GC::Function<bool()>> goal_condition) override;
};
Agent& relevant_agent(JS::Object const&);