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LibWeb: Return a representation of an 'Agent' in 'relevant agent'

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This makes it more convenient to use the 'relvant agent' concept,
instead of the awkward dynamic casts we needed to do for every call
site.

mutation_observers is also changed to hold a GC::Root instead of raw
GC::Ptr. Somehow this was not causing problems before, but trips up CI
after these changes.
This commit is contained in:
Shannon Booth
2025-01-04 23:12:55 +13:00
committed by Tim Flynn
parent 5bed8f4055
commit 64eeda6450
15 changed files with 140 additions and 98 deletions
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5
Libraries/LibWeb/DOM/Document.cpp
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@@ -118,6 +118,7 @@
#include <LibWeb/HTML/Numbers.h>
#include <LibWeb/HTML/Parser/HTMLParser.h>
#include <LibWeb/HTML/PopStateEvent.h>
#include <LibWeb/HTML/Scripting/Agent.h>
#include <LibWeb/HTML/Scripting/ClassicScript.h>
#include <LibWeb/HTML/Scripting/ExceptionReporter.h>
#include <LibWeb/HTML/Scripting/WindowEnvironmentSettingsObject.h>
@@ -3949,7 +3950,7 @@ void Document::unload(GC::Ptr<Document>)
auto intend_to_store_in_bfcache = false;
// 6. Let eventLoop be oldDocument's relevant agent's event loop.
auto& event_loop = *verify_cast<Bindings::WebEngineCustomData>(*HTML::relevant_agent(*this).custom_data()).event_loop;
auto& event_loop = *HTML::relevant_agent(*this).event_loop;
// 7. Increase eventLoop's termination nesting level by 1.
event_loop.increment_termination_nesting_level();
@@ -6096,7 +6097,7 @@ Document::StepsToFireBeforeunloadResult Document::steps_to_fire_beforeunload(boo
m_unload_counter++;
// 3. Increase document's relevant agent's event loop's termination nesting level by 1.
auto& event_loop = *verify_cast<Bindings::WebEngineCustomData>(*HTML::relevant_agent(*this).custom_data()).event_loop;
auto& event_loop = *HTML::relevant_agent(*this).event_loop;
event_loop.increment_termination_nesting_level();
// 4. Let eventFiringResult be the result of firing an event named beforeunload at document's relevant global object,