LibWeb: Implement XMLHttpRequest.status

This lets jQuery's AJAX functionality progress further :^)

Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp

@@ -229,7 +229,7 @@ DOM::ExceptionOr<void> XMLHttpRequest::send()
         // we need to make ResourceLoader give us more detailed updates than just "done" and "error".
         ResourceLoader::the().load(
             request,
-            [weak_this = make_weak_ptr()](auto data, auto&, auto) {
+            [weak_this = make_weak_ptr()](auto data, auto&, auto status_code) {
                 if (!weak_this)
                     return;
                 auto& xhr = const_cast<XMLHttpRequest&>(*weak_this);
@@ -244,16 +244,18 @@ DOM::ExceptionOr<void> XMLHttpRequest::send()
                 }
 
                 xhr.m_ready_state = ReadyState::Done;
+                xhr.m_status = status_code.value_or(0);
                 xhr.m_send = false;
                 xhr.dispatch_event(DOM::Event::create(EventNames::readystatechange));
                 xhr.fire_progress_event(EventNames::load, transmitted, length);
                 xhr.fire_progress_event(EventNames::loadend, transmitted, length);
             },
-            [weak_this = make_weak_ptr()](auto& error, auto) {
+            [weak_this = make_weak_ptr()](auto& error, auto status_code) {
                 if (!weak_this)
                     return;
                 dbgln("XHR failed to load: {}", error);
                 const_cast<XMLHttpRequest&>(*weak_this).set_ready_state(ReadyState::Done);
+                const_cast<XMLHttpRequest&>(*weak_this).set_status(status_code.value_or(0));
                 const_cast<XMLHttpRequest&>(*weak_this).dispatch_event(DOM::Event::create(HTML::EventNames::error));
             });
     } else {

Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h

@@ -68,6 +68,7 @@ public:
     using RefCounted::unref;
 
     ReadyState ready_state() const { return m_ready_state; };
+    unsigned status() const { return m_status; };
     String response_text() const;
 
     DOM::ExceptionOr<void> open(const String& method, const String& url);
@@ -82,6 +83,7 @@ private:
     virtual JS::Object* create_wrapper(JS::GlobalObject&) override;
 
     void set_ready_state(ReadyState);
+    void set_status(unsigned status) { m_status = status; }
     void fire_progress_event(const String&, u64, u64);
 
     explicit XMLHttpRequest(DOM::Window&);
@@ -89,6 +91,7 @@ private:
     NonnullRefPtr<DOM::Window> m_window;
 
     ReadyState m_ready_state { ReadyState::Unsent };
+    unsigned m_status { 0 };
     bool m_send { false };
 
     String m_method;

Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl

@@ -9,6 +9,7 @@ interface XMLHttpRequest : XMLHttpRequestEventTarget {
     const unsigned short DONE = 4;
 
     readonly attribute unsigned short readyState;
+    readonly attribute unsigned short status;
     readonly attribute DOMString responseText;
 
     undefined open(DOMString method, DOMString url);