LibWeb: Use WindowProxy instead of Window in UI Events IDL

I believe this is an error in the UI Events spec, and it should be
updated to match the HTML spec (which uses WindowProxy everywhere).

This fixes a bunch of issues already covered by existing WPT tests.

Spec bug: https://github.com/w3c/uievents/issues/388

Note that WebKit has been using WindowProxy instead of Window in
UI Events IDL since 2018:
https://github.com/WebKit/WebKit/commit/816158b4aa33e65f8ffa931ad17453883f91818a

Libraries/LibWeb/HTML/Focus.cpp

@@ -27,7 +27,7 @@ static void fire_a_focus_event(GC::Ptr<DOM::EventTarget> focus_event_target, GC:
     // object, and the composed flag set.
     UIEvents::FocusEventInit focus_event_init {};
     focus_event_init.related_target = related_focus_target;
-    focus_event_init.view = verify_cast<HTML::Window>(focus_event_target->realm().global_object());
+    focus_event_init.view = verify_cast<HTML::Window>(focus_event_target->realm().global_object()).window();
 
     auto focus_event = UIEvents::FocusEvent::create(focus_event_target->realm(), event_name, focus_event_init);
     // AD-HOC: support bubbling focus events, used for focusin & focusout.

Libraries/LibWeb/Page/DragAndDropEventHandler.cpp

@@ -561,7 +561,7 @@ GC::Ref<HTML::DragEvent> DragAndDropEventHandler::fire_a_drag_and_drop_event(
 
     if (target) {
         auto& window = static_cast<HTML::Window&>(HTML::relevant_global_object(*target));
-        event_init.view = window;
+        event_init.view = window.window();
     }
 
     //     If e is not dragleave or dragend, then initialize event's cancelable attribute to true.

Libraries/LibWeb/UIEvents/CompositionEvent.cpp

@@ -37,7 +37,7 @@ void CompositionEvent::initialize(JS::Realm& realm)
 }
 
 // https://w3c.github.io/uievents/#dom-compositionevent-initcompositionevent
-void CompositionEvent::init_composition_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, String const& data)
+void CompositionEvent::init_composition_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, String const& data)
 {
     // Initializes attributes of a CompositionEvent object. This method has the same behavior as UIEvent.initUIEvent().
     // The value of detail remains undefined.

Libraries/LibWeb/UIEvents/CompositionEvent.h

@@ -27,7 +27,7 @@ public:
     // https://w3c.github.io/uievents/#dom-compositionevent-data
     String data() const { return m_data; }
 
-    void init_composition_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, String const& data);
+    void init_composition_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, String const& data);
 
 private:
     CompositionEvent(JS::Realm&, FlyString const& event_name, CompositionEventInit const&);

Libraries/LibWeb/UIEvents/CompositionEvent.idl

@@ -8,7 +8,7 @@ interface CompositionEvent : UIEvent {
 
     // https://w3c.github.io/uievents/#dom-compositionevent-initcompositionevent
     // FIXME: The spec uses WindowProxy rather than Window (see https://github.com/w3c/uievents/pull/379).
-    undefined initCompositionEvent(DOMString typeArg, optional boolean bubblesArg = false, optional boolean cancelableArg = false, optional Window? viewArg = null, optional DOMString dataArg = "");
+    undefined initCompositionEvent(DOMString typeArg, optional boolean bubblesArg = false, optional boolean cancelableArg = false, optional WindowProxy? viewArg = null, optional DOMString dataArg = "");
 };
 
 // https://w3c.github.io/uievents/#dictdef-compositioneventinit

Libraries/LibWeb/UIEvents/KeyboardEvent.cpp

@@ -730,7 +730,7 @@ bool KeyboardEvent::get_modifier_state(String const& key_arg) const
 }
 
 // https://w3c.github.io/uievents/#dom-keyboardevent-initkeyboardevent
-void KeyboardEvent::init_keyboard_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, String const& key, WebIDL::UnsignedLong location, bool ctrl_key, bool alt_key, bool shift_key, bool meta_key)
+void KeyboardEvent::init_keyboard_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, String const& key, WebIDL::UnsignedLong location, bool ctrl_key, bool alt_key, bool shift_key, bool meta_key)
 {
     // Initializes attributes of a KeyboardEvent object. This method has the same behavior as UIEvent.initUIEvent().
     // The value of detail remains undefined.

Libraries/LibWeb/UIEvents/KeyboardEvent.h

@@ -62,7 +62,7 @@ public:
 
     virtual u32 which() const override { return m_key_code; }
 
-    void init_keyboard_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, String const& key, WebIDL::UnsignedLong location, bool ctrl_key, bool alt_key, bool shift_key, bool meta_key);
+    void init_keyboard_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, String const& key, WebIDL::UnsignedLong location, bool ctrl_key, bool alt_key, bool shift_key, bool meta_key);
 
 private:
     KeyboardEvent(JS::Realm&, FlyString const& event_name, KeyboardEventInit const& event_init);

Libraries/LibWeb/UIEvents/KeyboardEvent.idl

@@ -30,7 +30,7 @@ interface KeyboardEvent : UIEvent {
     boolean getModifierState(DOMString keyArg);
 
     // https://w3c.github.io/uievents/#dom-keyboardevent-initkeyboardevent
-    undefined initKeyboardEvent(DOMString typeArg, optional boolean bubblesArg = false, optional boolean cancelableArg = false, optional Window? viewArg = null, optional DOMString keyArg = "", optional unsigned long locationArg = 0, optional boolean ctrlKey = false, optional boolean altKey = false, optional boolean shiftKey = false, optional boolean metaKey = false);
+    undefined initKeyboardEvent(DOMString typeArg, optional boolean bubblesArg = false, optional boolean cancelableArg = false, optional WindowProxy? viewArg = null, optional DOMString keyArg = "", optional unsigned long locationArg = 0, optional boolean ctrlKey = false, optional boolean altKey = false, optional boolean shiftKey = false, optional boolean metaKey = false);
 
 };
 

Libraries/LibWeb/UIEvents/MouseEvent.cpp

@@ -97,7 +97,7 @@ bool MouseEvent::get_modifier_state(String const& key_arg) const
 }
 
 // https://w3c.github.io/uievents/#dom-mouseevent-initmouseevent
-void MouseEvent::init_mouse_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, WebIDL::Long detail, WebIDL::Long screen_x, WebIDL::Long screen_y, WebIDL::Long client_x, WebIDL::Long client_y, bool ctrl_key, bool alt_key, bool shift_key, bool meta_key, WebIDL::Short button, DOM::EventTarget* related_target)
+void MouseEvent::init_mouse_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, WebIDL::Long detail, WebIDL::Long screen_x, WebIDL::Long screen_y, WebIDL::Long client_x, WebIDL::Long client_y, bool ctrl_key, bool alt_key, bool shift_key, bool meta_key, WebIDL::Short button, DOM::EventTarget* related_target)
 {
     // Initializes attributes of a MouseEvent object. This method has the same behavior as UIEvent.initUIEvent().
 

Libraries/LibWeb/UIEvents/MouseEvent.h

@@ -77,7 +77,7 @@ public:
 
     virtual u32 which() const override { return m_button + 1; }
 
-    void init_mouse_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, WebIDL::Long detail, WebIDL::Long screen_x, WebIDL::Long screen_y, WebIDL::Long client_x, WebIDL::Long client_y, bool ctrl_key, bool alt_key, bool shift_key, bool meta_key, WebIDL::Short button, DOM::EventTarget* related_target);
+    void init_mouse_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, WebIDL::Long detail, WebIDL::Long screen_x, WebIDL::Long screen_y, WebIDL::Long client_x, WebIDL::Long client_y, bool ctrl_key, bool alt_key, bool shift_key, bool meta_key, WebIDL::Short button, DOM::EventTarget* related_target);
 
 protected:
     MouseEvent(JS::Realm&, FlyString const& event_name, MouseEventInit const& event_init, double page_x, double page_y, double offset_x, double offset_y);

Libraries/LibWeb/UIEvents/MouseEvent.idl

@@ -34,7 +34,7 @@ interface MouseEvent : UIEvent {
     boolean getModifierState(DOMString keyArg);
 
     // https://w3c.github.io/uievents/#dom-mouseevent-initmouseevent
-    undefined initMouseEvent(DOMString typeArg, optional boolean bubblesArg = false, optional boolean cancelableArg = false, optional Window? viewArg = null, optional long detailArg = 0, optional long screenXArg = 0, optional long screenYArg = 0, optional long clientXArg = 0, optional long clientYArg = 0, optional boolean ctrlKeyArg = false, optional boolean altKeyArg = false, optional boolean shiftKeyArg = false, optional boolean metaKeyArg = false, optional short buttonArg = 0, optional EventTarget? relatedTargetArg = null);
+    undefined initMouseEvent(DOMString typeArg, optional boolean bubblesArg = false, optional boolean cancelableArg = false, optional WindowProxy? viewArg = null, optional long detailArg = 0, optional long screenXArg = 0, optional long screenYArg = 0, optional long clientXArg = 0, optional long clientYArg = 0, optional boolean ctrlKeyArg = false, optional boolean altKeyArg = false, optional boolean shiftKeyArg = false, optional boolean metaKeyArg = false, optional short buttonArg = 0, optional EventTarget? relatedTargetArg = null);
 };
 
 // https://w3c.github.io/uievents/#idl-mouseeventinit

Libraries/LibWeb/UIEvents/TextEvent.cpp

@@ -31,7 +31,7 @@ void TextEvent::initialize(JS::Realm& realm)
 }
 
 // https://w3c.github.io/uievents/#dom-textevent-inittextevent
-void TextEvent::init_text_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, String const& data)
+void TextEvent::init_text_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, String const& data)
 {
     // Initializes attributes of a TextEvent object. This method has the same behavior as UIEvent.initUIEvent().
     // The value of detail remains undefined.

Libraries/LibWeb/UIEvents/TextEvent.h

@@ -22,7 +22,7 @@ public:
     // https://w3c.github.io/uievents/#dom-textevent-data
     String data() const { return m_data; }
 
-    void init_text_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, String const& data);
+    void init_text_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, String const& data);
 
 private:
     TextEvent(JS::Realm&, FlyString const& event_name);

Libraries/LibWeb/UIEvents/TextEvent.idl

@@ -4,5 +4,5 @@
 [Exposed=Window]
 interface TextEvent : UIEvent {
     readonly attribute DOMString data;
-    undefined initTextEvent(DOMString type, optional boolean bubbles = false, optional boolean cancelable = false, optional Window? view = null, optional DOMString data = "undefined");
+    undefined initTextEvent(DOMString type, optional boolean bubbles = false, optional boolean cancelable = false, optional WindowProxy? view = null, optional DOMString data = "undefined");
 };

Libraries/LibWeb/UIEvents/UIEvent.cpp

@@ -6,6 +6,7 @@
 
 #include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Bindings/UIEventPrototype.h>
+#include <LibWeb/HTML/WindowProxy.h>
 #include <LibWeb/UIEvents/UIEvent.h>
 
 namespace Web::UIEvents {

Libraries/LibWeb/UIEvents/UIEvent.h

@@ -13,7 +13,7 @@
 namespace Web::UIEvents {
 
 struct UIEventInit : public DOM::EventInit {
-    GC::Ptr<HTML::Window> view;
+    GC::Ptr<HTML::WindowProxy> view;
     int detail { 0 };
 };
 
@@ -27,11 +27,11 @@ public:
 
     virtual ~UIEvent() override;
 
-    HTML::Window const* view() const { return m_view.ptr(); }
+    GC::Ptr<HTML::WindowProxy> const view() const { return m_view; }
     int detail() const { return m_detail; }
     virtual u32 which() const { return 0; }
 
-    void init_ui_event(String const& type, bool bubbles, bool cancelable, HTML::Window* view, int detail)
+    void init_ui_event(String const& type, bool bubbles, bool cancelable, GC::Ptr<HTML::WindowProxy> view, int detail)
     {
         // Initializes attributes of an UIEvent object. This method has the same behavior as initEvent().
 
@@ -54,7 +54,7 @@ protected:
     virtual void initialize(JS::Realm&) override;
     virtual void visit_edges(Cell::Visitor&) override;
 
-    GC::Ptr<HTML::Window> m_view;
+    GC::Ptr<HTML::WindowProxy> m_view;
     int m_detail { 0 };
 };
 

Libraries/LibWeb/UIEvents/UIEvent.idl

@@ -5,16 +5,16 @@
 [Exposed=Window]
 interface UIEvent : Event {
     constructor(DOMString type, optional UIEventInit eventInitDict = {});
-    readonly attribute Window? view;
+    readonly attribute WindowProxy? view;
     readonly attribute long detail;
 
     // Obsolete
-    [ImplementedAs=init_ui_event] undefined initUIEvent(DOMString typeArg, optional boolean bubblesArg = false, optional boolean cancelableArg = false, optional Window? viewArg = null, optional long detailArg = 0);
+    [ImplementedAs=init_ui_event] undefined initUIEvent(DOMString typeArg, optional boolean bubblesArg = false, optional boolean cancelableArg = false, optional WindowProxy? viewArg = null, optional long detailArg = 0);
     readonly attribute unsigned long which;
 };
 
 // https://w3c.github.io/uievents/#idl-uieventinit
 dictionary UIEventInit : EventInit {
-    Window? view = null;
+    WindowProxy? view = null;
     long detail = 0;
 };

Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp

@@ -102,6 +102,7 @@ static bool is_platform_object(Type const& type)
         "VideoTrackList"sv,
         "WebGLRenderingContext"sv,
         "Window"sv,
+        "WindowProxy"sv,
         "WritableStream"sv,
     };
     if (type.name().ends_with("Element"sv))

Tests/LibWeb/Text/expected/wpt-import/dom/events/Event-init-while-dispatching.txt

@@ -6,11 +6,10 @@ Rerun
 
 Found 5 tests
 
-4 Pass
-1 Fail
+5 Pass
 Details
 Result	Test Name	MessagePass	Calling initKeyboardEvent while dispatching.	
 Pass	Calling initMouseEvent while dispatching.	
 Pass	Calling initCustomEvent while dispatching.	
-Fail	Calling initUIEvent while dispatching.	Not an object of type Window
+Pass	Calling initUIEvent while dispatching.	
 Pass	Calling initEvent while dispatching.	

Tests/LibWeb/Text/expected/wpt-import/dom/events/Event-subclasses-constructors.txt

@@ -6,8 +6,7 @@ Rerun
 
 Found 49 tests
 
-43 Pass
-6 Fail
+49 Pass
 Details
 Result	Test Name	MessagePass	Event constructor (no argument)	
 Pass	Event constructor (undefined argument)	
@@ -20,37 +19,37 @@ Pass	UIEvent constructor (undefined argument)
 Pass	UIEvent constructor (null argument)	
 Pass	UIEvent constructor (empty argument)	
 Pass	UIEvent constructor (argument with default values)	
-Fail	UIEvent constructor (argument with non-default values)	Not an object of type Window
+Pass	UIEvent constructor (argument with non-default values)	
 Pass	FocusEvent constructor (no argument)	
 Pass	FocusEvent constructor (undefined argument)	
 Pass	FocusEvent constructor (null argument)	
 Pass	FocusEvent constructor (empty argument)	
 Pass	FocusEvent constructor (argument with default values)	
-Fail	FocusEvent constructor (argument with non-default values)	Not an object of type Window
+Pass	FocusEvent constructor (argument with non-default values)	
 Pass	MouseEvent constructor (no argument)	
 Pass	MouseEvent constructor (undefined argument)	
 Pass	MouseEvent constructor (null argument)	
 Pass	MouseEvent constructor (empty argument)	
 Pass	MouseEvent constructor (argument with default values)	
-Fail	MouseEvent constructor (argument with non-default values)	Not an object of type Window
+Pass	MouseEvent constructor (argument with non-default values)	
 Pass	WheelEvent constructor (no argument)	
 Pass	WheelEvent constructor (undefined argument)	
 Pass	WheelEvent constructor (null argument)	
 Pass	WheelEvent constructor (empty argument)	
 Pass	WheelEvent constructor (argument with default values)	
-Fail	WheelEvent constructor (argument with non-default values)	Not an object of type Window
+Pass	WheelEvent constructor (argument with non-default values)	
 Pass	KeyboardEvent constructor (no argument)	
 Pass	KeyboardEvent constructor (undefined argument)	
 Pass	KeyboardEvent constructor (null argument)	
 Pass	KeyboardEvent constructor (empty argument)	
 Pass	KeyboardEvent constructor (argument with default values)	
-Fail	KeyboardEvent constructor (argument with non-default values)	Not an object of type Window
+Pass	KeyboardEvent constructor (argument with non-default values)	
 Pass	CompositionEvent constructor (no argument)	
 Pass	CompositionEvent constructor (undefined argument)	
 Pass	CompositionEvent constructor (null argument)	
 Pass	CompositionEvent constructor (empty argument)	
 Pass	CompositionEvent constructor (argument with default values)	
-Fail	CompositionEvent constructor (argument with non-default values)	Not an object of type Window
+Pass	CompositionEvent constructor (argument with non-default values)	
 Pass	SubclassedEvent constructor (no argument)	
 Pass	SubclassedEvent constructor (undefined argument)	
 Pass	SubclassedEvent constructor (null argument)