diff -r 000000000000 -r 4f2f89ce4247 WebCore/bindings/js/JSEventSourceCustom.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/bindings/js/JSEventSourceCustom.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2009 Ericsson AB. All rights reserved.
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Ericsson nor the names of its contributors
+ *    may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#if ENABLE(EVENTSOURCE)
+
+#include "JSEventSource.h"
+
+#include "EventSource.h"
+#include "ExceptionCode.h"
+#include "ScriptExecutionContext.h"
+#include <runtime/Error.h>
+
+using namespace JSC;
+
+namespace WebCore {
+
+EncodedJSValue JSC_HOST_CALL JSEventSourceConstructor::constructJSEventSource(ExecState* exec)
+{
+    if (exec->argumentCount() < 1)
+        return throwVMError(exec, createSyntaxError(exec, "Not enough arguments"));
+
+    UString url = exec->argument(0).toString(exec);
+    if (exec->hadException())
+        return JSValue::encode(JSValue());
+
+    JSEventSourceConstructor* jsConstructor =  static_cast<JSEventSourceConstructor*>(exec->callee());
+    ScriptExecutionContext* context = jsConstructor->scriptExecutionContext();
+    if (!context)
+        return throwVMError(exec, createReferenceError(exec, "EventSource constructor associated document is unavailable"));
+
+    ExceptionCode ec = 0;
+    RefPtr<EventSource> eventSource = EventSource::create(ustringToString(url), context, ec);
+    if (ec) {
+        setDOMException(exec, ec);
+        return JSValue::encode(JSValue());
+    }
+
+    return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), eventSource.release())));
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(EVENTSOURCE)