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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
parent 4cd186f3f5
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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14
Libraries/LibWeb/HTML/Scripting/Agent.cpp
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@ -7,15 +7,27 @@
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/HTML/Scripting/Agent.h>
#include <LibWeb/HTML/Scripting/Environments.h>
#include <LibWeb/Platform/EventLoopPlugin.h>
namespace Web::HTML {
bool Agent::can_block() const
{
// similar-origin window agents can not block, see: https://html.spec.whatwg.org/multipage/webappapis.html#obtain-similar-origin-window-agent
return false;
}
void Agent::spin_event_loop_until(GC::Root<GC::Function<bool()>> goal_condition)
{
Platform::EventLoopPlugin::the().spin_until(move(goal_condition));
}
// https://html.spec.whatwg.org/multipage/webappapis.html#relevant-agent
Agent& relevant_agent(JS::Object const& object)
{
// The relevant agent for a platform object platformObject is platformObject's relevant Realm's agent.
// Spec Note: This pointer is not yet defined in the JavaScript specification; see tc39/ecma262#1357.
return static_cast<Bindings::WebEngineCustomData*>(relevant_realm(object).vm().custom_data())->agent;
return *static_cast<Agent*>(relevant_realm(object).vm().agent());
}
}