LibWeb: Add event handler attributes to XMLHttpRequestEventTarget

This patch adds the following event handler attributes to XHR's
EventTarget base class:

- onloadstart
- onprogress
- onabort
- onerror
- onload
- ontimeout
- onloadend

Userland/Libraries/LibWeb/CMakeLists.txt

@@ -250,6 +250,7 @@ set(SOURCES
     WebContentClient.cpp
     XHR/EventNames.cpp
     XHR/XMLHttpRequest.cpp
+    XHR/XMLHttpRequestEventTarget.cpp
 )
 
 set(GENERATED_SOURCES

Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.cpp

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/HTML/EventHandler.h>
+#include <LibWeb/XHR/EventNames.h>
+#include <LibWeb/XHR/XMLHttpRequestEventTarget.h>
+
+namespace Web::XHR {
+
+HTML::EventHandler XMLHttpRequestEventTarget::onabort()
+{
+    return event_handler_attribute(Web::XHR::EventNames::abort);
+}
+
+void XMLHttpRequestEventTarget::set_onabort(HTML::EventHandler value)
+{
+    set_event_handler_attribute(Web::XHR::EventNames::abort, move(value));
+}
+
+HTML::EventHandler XMLHttpRequestEventTarget::onloadstart()
+{
+    return event_handler_attribute(Web::XHR::EventNames::loadstart);
+}
+
+void XMLHttpRequestEventTarget::set_onloadstart(HTML::EventHandler value)
+{
+    set_event_handler_attribute(Web::XHR::EventNames::loadstart, move(value));
+}
+
+HTML::EventHandler XMLHttpRequestEventTarget::onloadend()
+{
+    return event_handler_attribute(Web::XHR::EventNames::loadend);
+}
+
+void XMLHttpRequestEventTarget::set_onloadend(HTML::EventHandler value)
+{
+    set_event_handler_attribute(Web::XHR::EventNames::loadend, move(value));
+}
+
+HTML::EventHandler XMLHttpRequestEventTarget::onprogress()
+{
+    return event_handler_attribute(Web::XHR::EventNames::progress);
+}
+
+void XMLHttpRequestEventTarget::set_onprogress(HTML::EventHandler value)
+{
+    set_event_handler_attribute(Web::XHR::EventNames::progress, move(value));
+}
+
+HTML::EventHandler XMLHttpRequestEventTarget::onerror()
+{
+    return event_handler_attribute(Web::XHR::EventNames::error);
+}
+
+void XMLHttpRequestEventTarget::set_onerror(HTML::EventHandler value)
+{
+    set_event_handler_attribute(Web::XHR::EventNames::error, move(value));
+}
+
+HTML::EventHandler XMLHttpRequestEventTarget::onload()
+{
+    return event_handler_attribute(Web::XHR::EventNames::load);
+}
+
+void XMLHttpRequestEventTarget::set_onload(HTML::EventHandler value)
+{
+    set_event_handler_attribute(Web::XHR::EventNames::load, move(value));
+}
+
+HTML::EventHandler XMLHttpRequestEventTarget::ontimeout()
+{
+    return event_handler_attribute(Web::XHR::EventNames::timeout);
+}
+
+void XMLHttpRequestEventTarget::set_ontimeout(HTML::EventHandler value)
+{
+    set_event_handler_attribute(Web::XHR::EventNames::timeout, move(value));
+}
+
+}

Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.h

@@ -20,6 +20,21 @@ public:
 
     virtual ~XMLHttpRequestEventTarget() override {};
 
+    HTML::EventHandler onloadstart();
+    void set_onloadstart(HTML::EventHandler);
+    HTML::EventHandler onprogress();
+    void set_onprogress(HTML::EventHandler);
+    HTML::EventHandler onabort();
+    void set_onabort(HTML::EventHandler);
+    HTML::EventHandler onerror();
+    void set_onerror(HTML::EventHandler);
+    HTML::EventHandler onload();
+    void set_onload(HTML::EventHandler);
+    HTML::EventHandler ontimeout();
+    void set_ontimeout(HTML::EventHandler);
+    HTML::EventHandler onloadend();
+    void set_onloadend(HTML::EventHandler);
+
 protected:
     explicit XMLHttpRequestEventTarget(Bindings::ScriptExecutionContext& script_execution_context)
         : DOM::EventTarget(script_execution_context)

Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl

@@ -1,3 +1,11 @@
 interface XMLHttpRequestEventTarget : EventTarget {
 
+    attribute EventHandler onloadstart;
+    attribute EventHandler onprogress;
+    attribute EventHandler onabort;
+    attribute EventHandler onerror;
+    attribute EventHandler onload;
+    attribute EventHandler ontimeout;
+    attribute EventHandler onloadend;
+
 };