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LibWeb: Don't rely on SHTQ::process() in process_the_iframe_attributes

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`HTMLIFrameElement::inserted()` does following:
1. Init a new navigable. This step appends a task on session history
   traversal queue (SHTQ) that creates a new nested history.
2. Process iframe's attributes

Processing of iframe's attributes might result in synchronous
navigation that fails to get active SHE if SHTQ task that creates
new nested history is not yet completed.

Before this change, a workaround involved forcing the processing of
SHTQ, which was terrible hack because it could occur in the middle of
another SHTQ task.

This change removes the need for "force SHTQ processing" by ensuring
that the processing of iframe's attributes is always executed after
the iframe's navigable nested history has been created.
This commit is contained in:
Aliaksandr Kalenik
2024-04-04 18:49:40 +02:00
committed by Alexander Kalenik
parent 8cc2ee34db
commit 11011cf250
Notes: sideshowbarker 2024-07-17 07:35:03 +09:00 
Author: https://github.com/kalenikaliaksandr
Commit: https://github.com/SerenityOS/serenity/commit/11011cf250
Pull-request: https://github.com/SerenityOS/serenity/pull/23853
4 changed files with 21 additions and 8 deletions
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9
Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.cpp
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@@ -60,12 +60,13 @@ void HTMLIFrameElement::inserted()
// When an iframe element element is inserted into a document whose browsing context is non-null, the user agent must run these steps:
if (in_a_document_tree() && document().browsing_context()) {
// 1. Create a new child navigable for element.
MUST(create_new_child_navigable());
MUST(create_new_child_navigable([this] {
// 3. Process the iframe attributes for element, with initialInsertion set to true.
process_the_iframe_attributes(true);
set_content_navigable_initialized();
}));
// FIXME: 2. If element has a sandbox attribute, then parse the sandboxing directive given the attribute's value and element's iframe sandboxing flag set.
// 3. Process the iframe attributes for element, with initialInsertion set to true.
process_the_iframe_attributes(true);
}
}