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script: Implement getModifierState for mouse event (#38535)

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Implement missing idl function `getModifierState` for mouse event. The
implementation is exactly the same as in keyboard event
https://w3c.github.io/uievents/#dom-keyboardevent-getmodifierstate.


6651f37c05/components/script/dom/keyboardevent.rs (L267-L283)

Testing: Fix
`./tests/wpt/tests/infrastructure/testdriver/actions/actionsWithKeyPressed.html`

---------

Signed-off-by: PotatoCP <Kenzie.Raditya.Tirtarahardja@huawei.com>
This commit is contained in:
Kenzie Raditya Tirtarahardja 2025-08-12 14:33:15 +08:00 • committed by GitHub
parent 2e2bfc6067
commit c0d884ddb2
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GPG key ID: B5690EEEBB952194
3 changed files with 20 additions and 16 deletions
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19
components/script/dom/mouseevent.rs
View file

@ -527,4 +527,23 @@ impl MouseEventMethods<crate::DomTypeHolder> for MouseEvent {
fn IsTrusted(&self) -> bool {
self.uievent.IsTrusted()
}
/// <https://w3c.github.io/uievents/#dom-mouseevent-getmodifierstate>
fn GetModifierState(&self, key_arg: DOMString) -> bool {
self.modifiers.get().contains(match &*key_arg {
"Alt" => Modifiers::ALT,
"AltGraph" => Modifiers::ALT_GRAPH,
"CapsLock" => Modifiers::CAPS_LOCK,
"Control" => Modifiers::CONTROL,
"Fn" => Modifiers::FN,
"FnLock" => Modifiers::FN_LOCK,
"Meta" => Modifiers::META,
"NumLock" => Modifiers::NUM_LOCK,
"ScrollLock" => Modifiers::SCROLL_LOCK,
"Shift" => Modifiers::SHIFT,
"Symbol" => Modifiers::SYMBOL,
"SymbolLock" => Modifiers::SYMBOL_LOCK,
_ => return false,
})
}
}

2
components/script_bindings/webidls/MouseEvent.webidl
View file

@ -24,7 +24,7 @@ interface MouseEvent : UIEvent {
readonly attribute EventTarget? relatedTarget;
// Introduced in DOM Level 3
readonly attribute unsigned short buttons;
//boolean getModifierState (DOMString keyArg);
boolean getModifierState (DOMString keyArg);
[Pref="dom_mouse_event_which_enabled"]
readonly attribute long which;

15
tests/wpt/meta/uievents/idlharness.window.js.ini vendored
View file

@ -11,24 +11,9 @@
[UIEvent interface: new FocusEvent("event") must inherit property "which" with the proper type]
expected: FAIL
[MouseEvent interface: operation getModifierState(DOMString)]
expected: FAIL
[MouseEvent interface: operation initMouseEvent(DOMString, optional boolean, optional boolean, optional Window?, optional long, optional long, optional long, optional long, optional long, optional boolean, optional boolean, optional boolean, optional boolean, optional short, optional EventTarget?)]
expected: FAIL
[MouseEvent interface: new MouseEvent("event") must inherit property "getModifierState(DOMString)" with the proper type]
expected: FAIL
[MouseEvent interface: calling getModifierState(DOMString) on new MouseEvent("event") with too few arguments must throw TypeError]
expected: FAIL
[MouseEvent interface: new WheelEvent("event") must inherit property "getModifierState(DOMString)" with the proper type]
expected: FAIL
[MouseEvent interface: calling getModifierState(DOMString) on new WheelEvent("event") with too few arguments must throw TypeError]
expected: FAIL
[InputEvent interface: attribute inputType]
expected: FAIL