1 files changed, 69 insertions, 0 deletions
diff --git a/Source/WebCore/page/IntersectionObserver.cpp b/Source/WebCore/page/IntersectionObserver.cpp
new file mode 100644
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+++ b/Source/WebCore/page/IntersectionObserver.cpp
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+/*
+ * Copyright (C) 2016 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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(INTERSECTION_OBSERVER)
+#include "IntersectionObserver.h"
+
+#include "Element.h"
+#include "IntersectionObserverCallback.h"
+#include "IntersectionObserverEntry.h"
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+IntersectionObserver::IntersectionObserver(Ref<IntersectionObserverCallback>&& callback, Init&& init)
+    : m_root(init.root)
+    , m_rootMargin(WTFMove(init.rootMargin))
+    , m_callback(WTFMove(callback))
+{
+    if (WTF::holds_alternative<double>(init.threshold))
+        m_thresholds.append(WTF::get<double>(init.threshold));
+    else
+        m_thresholds = WTF::get<Vector<double>>(WTFMove(init.threshold));
+}
+
+void IntersectionObserver::observe(Element&)
+{
+}
+
+void IntersectionObserver::unobserve(Element&)
+{
+}
+
+void IntersectionObserver::disconnect()
+{
+}
+
+Vector<RefPtr<IntersectionObserverEntry>> IntersectionObserver::takeRecords()
+{
+    return { };
+}
+
+
+} // namespace WebCore
+
+#endif // ENABLE(INTERSECTION_OBSERVER)