RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 13:38:11 +00:00
Code Issues Activity Actions

LibWeb: Visit custom element's lifecycle callbacks

Browse source 
...instead of using JS::Handle which causes leaks when object holding
the callback can be reached by visiting the callback's dependencies.
This commit is contained in:
Aliaksandr Kalenik 2024-03-11 19:12:52 +01:00 • committed by Alexander Kalenik
parent 3d48c55e50
commit 3b4230e0b0
5 changed files with 26 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Userland/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp
View file

@ -201,14 +201,14 @@ JS::ThrowCompletionOr<void> CustomElementRegistry::define(String const& name, We
// 2. If callbackValue is not undefined, then set the value of the entry in lifecycleCallbacks with key callbackName to the result of converting callbackValue to the Web IDL Function callback type. Rethrow any exceptions from the conversion.
if (!callback_value.is_undefined()) {
auto callback = TRY(convert_value_to_callback_function(vm, callback_value));
lifecycle_callbacks.set(callback_name, JS::make_handle(callback));
lifecycle_callbacks.set(callback_name, callback);
}
}
// 5. If the value of the entry in lifecycleCallbacks with key "attributeChangedCallback" is not null, then:
auto attribute_changed_callback_iterator = lifecycle_callbacks.find(CustomElementReactionNames::attributeChangedCallback);
VERIFY(attribute_changed_callback_iterator != lifecycle_callbacks.end());
if (!attribute_changed_callback_iterator->value.is_null()) {
if (attribute_changed_callback_iterator->value) {
// 1. Let observedAttributesIterable be ? Get(constructor, "observedAttributes").
auto observed_attributes_iterable = TRY(constructor->callback->get(JS::PropertyKey { "observedAttributes" }));
@ -253,7 +253,7 @@ JS::ThrowCompletionOr<void> CustomElementRegistry::define(String const& name, We
// 2. If callbackValue is not undefined, then set the value of the entry in lifecycleCallbacks with key callbackName to the result of converting callbackValue to the Web IDL Function callback type. Rethrow any exceptions from the conversion.
if (!callback_value.is_undefined())
lifecycle_callbacks.set(callback_name, JS::make_handle(TRY(convert_value_to_callback_function(vm, callback_value))));
lifecycle_callbacks.set(callback_name, TRY(convert_value_to_callback_function(vm, callback_value)));
}
}