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script: Chain up keyboard scrolling to parent <iframe>s (#39469)

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When an `<iframe>` cannot scroll because the size of the frame is
greater than or
equal to the size of page contents, chain up the keyboard scroll
operation to the parent frame.

Testing: A new Servo-only WPT tests is added, though needs to be
manually
run with `--product servodriver`.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Delan Azabani <dazabani@igalia.com>
This commit is contained in:
Martin Robinson 2025-09-25 13:16:41 +02:00 • committed by GitHub
parent 75e32ba5a4
commit ffdb7d3663
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23 changed files with 406 additions and 132 deletions
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5
components/script/script_thread.rs
View file

@ -1911,6 +1911,11 @@ impl ScriptThread {
}
prefs::set(current_preferences);
},
ScriptThreadMessage::ForwardKeyboardScroll(pipeline_id, scroll) => {
if let Some(document) = self.documents.borrow().find_document(pipeline_id) {
document.event_handler().do_keyboard_scroll(scroll);
}
},
}
}