1 files changed, 74 insertions, 0 deletions
diff --git a/Source/WebCore/dom/EventPath.h b/Source/WebCore/dom/EventPath.h
new file mode 100644
index 000000000..a58af5a22
--- /dev/null
+++ b/Source/WebCore/dom/EventPath.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
+ * Copyright (C) 2013-2016 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+#include "EventContext.h"
+#include "PseudoElement.h"
+#include "SVGElement.h"
+#include "SVGUseElement.h"
+#include <wtf/Forward.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class EventPath {
+public:
+    EventPath(Node& origin, Event&);
+
+    bool isEmpty() const { return m_path.isEmpty(); }
+    size_t size() const { return m_path.size(); }
+    const EventContext& contextAt(size_t i) const { return *m_path[i]; }
+    EventContext& contextAt(size_t i) { return *m_path[i]; }
+
+#if ENABLE(TOUCH_EVENTS)
+    void retargetTouchLists(const TouchEvent&);
+#endif
+    void setRelatedTarget(Node& origin, EventTarget&);
+
+    bool hasEventListeners(const AtomicString& eventType) const;
+
+    EventContext* lastContextIfExists() { return m_path.isEmpty() ? nullptr : m_path.last().get(); }
+
+    Vector<EventTarget*> computePathUnclosedToTarget(const EventTarget&) const;
+
+    static Node* eventTargetRespectingTargetRules(Node& referenceNode)
+    {
+        if (is<PseudoElement>(referenceNode))
+            return downcast<PseudoElement>(referenceNode).hostElement();
+
+        // Events sent to elements inside an SVG use element's shadow tree go to the use element.
+        if (is<SVGElement>(referenceNode)) {
+            if (auto* useElement = downcast<SVGElement>(referenceNode).correspondingUseElement())
+                return useElement;
+        }
+
+        return &referenceNode;
+    }
+
+private:
+#if ENABLE(TOUCH_EVENTS)
+    void retargetTouch(TouchEventContext::TouchListType, const Touch&);
+#endif
+
+    Vector<std::unique_ptr<EventContext>, 32> m_path;
+};
+
+} // namespace WebCore