From fc9abee84b4f3be4e8dee33ad32ee0d0c36285a6 Mon Sep 17 00:00:00 2001
From: Luke <luke.wilde@live.co.uk>
Date: Sat, 10 Apr 2021 20:11:04 +0100
Subject: [PATCH] LibWeb: Add Event.initEvent

Used by YouTube after creating an event with Document.createEvent
---
 Userland/Libraries/LibWeb/DOM/Event.cpp | 23 +++++++++++++++++++++++
 Userland/Libraries/LibWeb/DOM/Event.h   |  4 ++++
 Userland/Libraries/LibWeb/DOM/Event.idl |  2 ++
 3 files changed, 29 insertions(+)

diff --git a/Userland/Libraries/LibWeb/DOM/Event.cpp b/Userland/Libraries/LibWeb/DOM/Event.cpp
index 9fd75ab226..faab43f363 100644
--- a/Userland/Libraries/LibWeb/DOM/Event.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Event.cpp
@@ -56,4 +56,27 @@ void Event::set_cancelled_flag()
         m_cancelled = true;
 }
 
+// https://dom.spec.whatwg.org/#concept-event-initialize
+void Event::initialize(const String& type, bool bubbles, bool cancelable)
+{
+    m_initialized = true;
+    m_stop_propagation = false;
+    m_stop_immediate_propagation = false;
+    m_cancelled = false;
+    m_is_trusted = false;
+    m_target = nullptr;
+    m_type = type;
+    m_bubbles = bubbles;
+    m_cancelable = cancelable;
+}
+
+// https://dom.spec.whatwg.org/#dom-event-initevent
+void Event::init_event(const String& type, bool bubbles, bool cancelable)
+{
+    if (m_dispatch)
+        return;
+
+    initialize(type, bubbles, cancelable);
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/DOM/Event.h b/Userland/Libraries/LibWeb/DOM/Event.h
index 54a91120e9..439fe71a20 100644
--- a/Userland/Libraries/LibWeb/DOM/Event.h
+++ b/Userland/Libraries/LibWeb/DOM/Event.h
@@ -154,6 +154,8 @@ public:
         m_stop_immediate_propagation = true;
     }
 
+    void init_event(const String&, bool, bool);
+
 protected:
     explicit Event(const FlyString& type)
         : m_type(type)
@@ -161,6 +163,8 @@ protected:
     {
     }
 
+    void initialize(const String&, bool, bool);
+
 private:
     FlyString m_type;
     RefPtr<EventTarget> m_target;
diff --git a/Userland/Libraries/LibWeb/DOM/Event.idl b/Userland/Libraries/LibWeb/DOM/Event.idl
index a12995e92e..1b998c6e11 100644
--- a/Userland/Libraries/LibWeb/DOM/Event.idl
+++ b/Userland/Libraries/LibWeb/DOM/Event.idl
@@ -23,4 +23,6 @@ interface Event {
 
     readonly attribute boolean isTrusted;
 
+    undefined initEvent(DOMString type, optional boolean bubbles = false, optional boolean cancelable = false);
+
 };