1 files changed, 116 insertions, 0 deletions
diff --git a/WebCore/dom/EventTarget.h b/WebCore/dom/EventTarget.h
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+++ b/WebCore/dom/EventTarget.h
@@ -0,0 +1,116 @@
+/*
+ * This file is part of the DOM implementation for KDE.
+ *
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ *           (C) 2001 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
+ * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
+ *           (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
+ *
+ * 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 COMPUTER, INC. ``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 COMPUTER, INC. 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. 
+ *
+ */
+
+#ifndef EventTarget_h
+#define EventTarget_h
+
+#include <wtf/Forward.h>
+
+namespace WebCore {
+
+    class AtomicString;
+    class Event;
+    class EventListener;
+    class EventTargetNode;
+    class RegisteredEventListener;
+    class SVGElementInstance;
+    class XMLHttpRequest;
+
+    typedef int ExceptionCode;
+
+    template<typename T> class DeprecatedValueList;
+    typedef DeprecatedValueList<RefPtr<RegisteredEventListener> > RegisteredEventListenerList;
+
+    class EventTarget {
+    public:
+        virtual EventTargetNode* toNode();
+        virtual XMLHttpRequest* toXMLHttpRequest();
+
+#if ENABLE(SVG)
+        virtual SVGElementInstance* toSVGElementInstance();
+#endif
+
+        virtual void addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture) = 0;
+        virtual void removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture) = 0;
+        virtual bool dispatchEvent(PassRefPtr<Event>, ExceptionCode&, bool tempEvent = false) = 0;
+
+        void ref() { refEventTarget(); }
+        void deref() { derefEventTarget(); }
+
+        // Handlers to do/undo actions on the target node before an event is dispatched to it and after the event
+        // has been dispatched.  The data pointer is handed back by the preDispatch and passed to postDispatch.
+        virtual void* preDispatchEventHandler(Event*) { return 0; }
+        virtual void postDispatchEventHandler(Event*, void* dataFromPreDispatch) { }
+
+    protected:
+        virtual ~EventTarget();
+
+        void addEventListener(EventTargetNode* referenceNode, const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture);
+        void removeEventListener(EventTargetNode* referenceNode, const AtomicString& eventType, EventListener*, bool useCapture);
+
+        bool dispatchGenericEvent(EventTargetNode* referenceNode, PassRefPtr<Event>, ExceptionCode&, bool tempEvent);
+        void removeAllEventListeners(EventTargetNode* referenceNode);
+
+        void insertedIntoDocument(EventTargetNode* referenceNode);
+        void removedFromDocument(EventTargetNode* referenceNode);
+
+        void handleLocalEvents(EventTargetNode* referenceNode, Event*, bool useCapture);
+
+        // For non SVG elements it will return 'referenceNode' and not modify it.
+        // For SVG elements it eventually returns an event target not equal to 'referenceNode'.
+        // 
+        // If 'referenceNode' is a child of a SVG <use> element it will return the corresponding SVGElementInstance
+        // as new event target - and 'referenceNode' will be set to the shadow tree element associated with
+        // the SVGElementInstance. Be sure to always dispatch/handle your events on this new event target.
+        EventTarget* eventTargetRespectingSVGTargetRules(EventTargetNode*& referenceNode);
+
+    private:
+        virtual void refEventTarget() = 0;
+        virtual void derefEventTarget() = 0;
+    };
+
+#ifndef NDEBUG
+
+void forbidEventDispatch();
+void allowEventDispatch();
+bool eventDispatchForbidden();
+
+#else
+
+inline void forbidEventDispatch() { }
+inline void allowEventDispatch() { }
+
+#endif // NDEBUG 
+
+}
+#endif