11 files changed, 15 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/CSS/MediaQueryList.idl b/Userland/Libraries/LibWeb/CSS/MediaQueryList.idl
index cd8fa55119..21178328bb 100644
--- a/Userland/Libraries/LibWeb/CSS/MediaQueryList.idl
+++ b/Userland/Libraries/LibWeb/CSS/MediaQueryList.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 [Exposed=Window]
 interface MediaQueryList : EventTarget {
diff --git a/Userland/Libraries/LibWeb/DOM/AbortSignal.idl b/Userland/Libraries/LibWeb/DOM/AbortSignal.idl
index 82b26fd5e6..4c11a9ba6a 100644
--- a/Userland/Libraries/LibWeb/DOM/AbortSignal.idl
+++ b/Userland/Libraries/LibWeb/DOM/AbortSignal.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 [Exposed=(Window,Worker), CustomVisit]
 interface AbortSignal : EventTarget {
diff --git a/Userland/Libraries/LibWeb/DOM/Document.idl b/Userland/Libraries/LibWeb/DOM/Document.idl
index f681407e87..b656ecc2df 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.idl
+++ b/Userland/Libraries/LibWeb/DOM/Document.idl
@@ -5,6 +5,7 @@
 #import <DOM/DocumentType.idl>
 #import <DOM/Element.idl>
 #import <DOM/Event.idl>
+#import <DOM/EventHandler.idl>
 #import <DOM/HTMLCollection.idl>
 #import <DOM/Node.idl>
 #import <DOM/NodeFilter.idl>
diff --git a/Userland/Libraries/LibWeb/DOM/EventHandler.idl b/Userland/Libraries/LibWeb/DOM/EventHandler.idl
new file mode 100644
index 0000000000..afb8503383
--- /dev/null
+++ b/Userland/Libraries/LibWeb/DOM/EventHandler.idl
@@ -0,0 +1,3 @@
+[LegacyTreatNonObjectAsNull]
+callback EventHandlerNonNull = any (Event event);
+typedef EventHandlerNonNull? EventHandler;
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLElement.idl
index 8b5518ef1e..fb81dffd01 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLElement.idl
@@ -1,4 +1,5 @@
 #import <HTML/DOMStringMap.idl>
+#import <DOM/EventHandler.idl>
 
 interface HTMLElement : Element {
 
diff --git a/Userland/Libraries/LibWeb/HTML/MessagePort.idl b/Userland/Libraries/LibWeb/HTML/MessagePort.idl
index af03a2ce83..3a8a92fc7b 100644
--- a/Userland/Libraries/LibWeb/HTML/MessagePort.idl
+++ b/Userland/Libraries/LibWeb/HTML/MessagePort.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 interface MessagePort : EventTarget {
 
diff --git a/Userland/Libraries/LibWeb/HTML/Worker.idl b/Userland/Libraries/LibWeb/HTML/Worker.idl
index 73687379a1..4f92053381 100644
--- a/Userland/Libraries/LibWeb/HTML/Worker.idl
+++ b/Userland/Libraries/LibWeb/HTML/Worker.idl
@@ -1,3 +1,6 @@
+#import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
+
 [Exposed=(Window)]
 interface Worker : EventTarget {
     constructor(DOMString scriptURL, optional WorkerOptions options = {});
diff --git a/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.idl b/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.idl
index 04117e1d4c..28d1c1581f 100644
--- a/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.idl
+++ b/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 #import <HTML/WorkerLocation.idl>
 #import <HTML/WorkerNavigator.idl>
 
diff --git a/Userland/Libraries/LibWeb/WebSockets/WebSocket.idl b/Userland/Libraries/LibWeb/WebSockets/WebSocket.idl
index 8457b84da6..ebd4545e6d 100644
--- a/Userland/Libraries/LibWeb/WebSockets/WebSocket.idl
+++ b/Userland/Libraries/LibWeb/WebSockets/WebSocket.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 interface WebSocket : EventTarget {
 
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
index b0de53a340..944f03c683 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
@@ -1,4 +1,5 @@
 #import <XHR/XMLHttpRequestEventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 enum XMLHttpRequestResponseType {
   "",
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl b/Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl
index 1bedd16034..90e4ab187e 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 interface XMLHttpRequestEventTarget : EventTarget {