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LibWeb: Implement inform the navigation api about aborting navigation

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This also requires implementing the abort the ongoing navigation AO on
Navigation, which will be used from other NavigateEvent AOs.
This commit is contained in:
Andrew Kaster 2023-09-20 23:21:16 -06:00 • committed by Andrew Kaster
parent 25ffe6becb
commit f296382e1a
5 changed files with 93 additions and 1 deletions
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64
Userland/Libraries/LibWeb/HTML/Navigation.cpp
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@ -10,7 +10,9 @@
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/NavigationPrototype.h>
#include <LibWeb/DOM/AbortController.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/HTML/ErrorEvent.h>
#include <LibWeb/HTML/NavigateEvent.h>
#include <LibWeb/HTML/Navigation.h>
#include <LibWeb/HTML/NavigationCurrentEntryChangeEvent.h>
@ -702,4 +704,66 @@ WebIDL::ExceptionOr<NavigationResult> Navigation::perform_a_navigation_api_trave
return navigation_api_method_tracker_derived_result(api_method_tracker);
}
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#abort-the-ongoing-navigation
void Navigation::abort_the_ongoing_navigation(Optional<JS::NonnullGCPtr<WebIDL::DOMException>> error)
{
auto& realm = relevant_realm(*this);
// To abort the ongoing navigation given a Navigation navigation and an optional DOMException error:
// 1. Let event be navigation's ongoing navigate event.
auto event = ongoing_navigate_event();
// 2. Assert: event is not null.
VERIFY(event != nullptr);
// 3. Set navigation's focus changed during ongoing navigation to false.
m_focus_changed_during_ongoing_navigation = false;
// 4. Set navigation's suppress normal scroll restoration during ongoing navigation to false.
m_suppress_scroll_restoration_during_ongoing_navigation = false;
// 5. If error was not given, then let error be a new "AbortError" DOMException created in navigation's relevant realm.
if (!error.has_value())
error = WebIDL::AbortError::create(realm, "Navigation aborted"_fly_string);
VERIFY(error.has_value());
// 6. If event's dispatch flag is set, then set event's canceled flag to true.
if (event->dispatched())
event->set_cancelled(true);
// 7. Signal abort on event's abort controller given error.
event->abort_controller()->abort(error.value());
// 8. Set navigation's ongoing navigate event to null.
m_ongoing_navigate_event = nullptr;
// 9. Fire an event named navigateerror at navigation using ErrorEvent, with error initialized to error,
// and message, filename, lineno, and colno initialized to appropriate values that can be extracted
// from error and the current JavaScript stack in the same underspecified way that the report the exception algorithm does.
ErrorEventInit event_init = {};
event_init.error = error.value();
// FIXME: Extract information from the exception and the JS context in the wishy-washy way the spec says here.
event_init.filename = String {};
event_init.colno = 0;
event_init.lineno = 0;
event_init.message = String {};
dispatch_event(ErrorEvent::create(realm, EventNames::navigateerror, event_init));
// 10. If navigation's ongoing API method tracker is non-null, then reject the finished promise for apiMethodTracker with error.
if (m_ongoing_api_method_tracker != nullptr)
WebIDL::reject_promise(realm, m_ongoing_api_method_tracker->finished_promise, error.value());
// 11. If navigation's transition is not null, then:
if (m_transition != nullptr) {
// 1. Reject navigation's transition's finished promise with error.
m_transition->finished()->reject(error.value());
// 2. Set navigation's transition to null.
m_transition = nullptr;
}
}
}