Moved files under Source/bindings/v8 to Source/bindings/core/v8.

Source/bindings/v8/V8AbstractEventListener.h

-/*
- * Copyright (C) 2006, 2007, 2008, 2009 Google 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:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * 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.
- *     * Neither the name of Google Inc. 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.
- */
-
-#ifndef V8AbstractEventListener_h
-#define V8AbstractEventListener_h
-
-#include "bindings/v8/DOMWrapperWorld.h"
-#include "bindings/v8/ScopedPersistent.h"
-#include "core/events/EventListener.h"
-#include <v8.h>
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
-
-namespace WebCore {
-
-    class Event;
-
-    // There are two kinds of event listeners: HTML or non-HMTL. onload,
-    // onfocus, etc (attributes) are always HTML event handler type; Event
-    // listeners added by Window.addEventListener or
-    // EventTargetNode::addEventListener are non-HTML type.
-    //
-    // Why does this matter?
-    // WebKit does not allow duplicated HTML event handlers of the same type,
-    // but ALLOWs duplicated non-HTML event handlers.
-    class V8AbstractEventListener : public EventListener {
-    public:
-        virtual ~V8AbstractEventListener();
-
-        static const V8AbstractEventListener* cast(const EventListener* listener)
-        {
-            return listener->type() == JSEventListenerType
-                ? static_cast<const V8AbstractEventListener*>(listener)
-                : 0;
-        }
-
-        static V8AbstractEventListener* cast(EventListener* listener)
-        {
-            return const_cast<V8AbstractEventListener*>(cast(const_cast<const EventListener*>(listener)));
-        }
-
-        // Implementation of EventListener interface.
-
-        virtual bool operator==(const EventListener& other) OVERRIDE { return this == &other; }
-
-        virtual void handleEvent(ExecutionContext*, Event*) OVERRIDE;
-
-        virtual bool isLazy() const { return false; }
-
-        // Returns the listener object, either a function or an object.
-        v8::Local<v8::Object> getListenerObject(ExecutionContext* context)
-        {
-            // prepareListenerObject can potentially deref this event listener
-            // as it may attempt to compile a function (lazy event listener), get an error
-            // and invoke onerror callback which can execute arbitrary JS code.
-            // Protect this event listener to keep it alive.
-            RefPtr<V8AbstractEventListener> guard(this);
-            prepareListenerObject(context);
-            return m_listener.newLocal(m_isolate);
-        }
-
-        v8::Local<v8::Object> getExistingListenerObject()
-        {
-            return m_listener.newLocal(m_isolate);
-        }
-
-        // Provides access to the underlying handle for GC. Returned
-        // value is a weak handle and so not guaranteed to stay alive.
-        v8::Persistent<v8::Object>& existingListenerObjectPersistentHandle()
-        {
-            return m_listener.getUnsafe();
-        }
-
-        bool hasExistingListenerObject()
-        {
-            return !m_listener.isEmpty();
-        }
-
-        void clearListenerObject()
-        {
-            m_listener.clear();
-        }
-
-        virtual bool belongsToTheCurrentWorld() const OVERRIDE FINAL;
-        v8::Isolate* isolate() const { return m_isolate; }
-        virtual DOMWrapperWorld& world() const { return scriptState()->world(); }
-        ScriptState* scriptState() const
-        {
-            ASSERT(m_scriptState);
-            return m_scriptState.get();
-        }
-        void setScriptState(ScriptState* scriptState) { m_scriptState = scriptState; }
-
-    protected:
-        V8AbstractEventListener(bool isAttribute, ScriptState*);
-        V8AbstractEventListener(bool isAttribute, v8::Isolate*);
-
-        virtual void prepareListenerObject(ExecutionContext*) { }
-
-        void setListenerObject(v8::Handle<v8::Object> listener);
-
-        void invokeEventHandler(Event*, v8::Local<v8::Value> jsEvent);
-
-        // Get the receiver object to use for event listener call.
-        v8::Local<v8::Object> getReceiverObject(Event*);
-
-    private:
-        // Implementation of EventListener function.
-        virtual bool virtualisAttribute() const OVERRIDE { return m_isAttribute; }
-
-        virtual v8::Local<v8::Value> callListenerFunction(v8::Handle<v8::Value> jsevent, Event*) = 0;
-
-        virtual bool shouldPreventDefault(v8::Local<v8::Value> returnValue);
-
-        static void setWeakCallback(const v8::WeakCallbackData<v8::Object, V8AbstractEventListener>&);
-
-        ScopedPersistent<v8::Object> m_listener;
-
-        // Indicates if this is an HTML type listener.
-        bool m_isAttribute;
-
-        // For V8LazyEventListener, m_scriptState can be 0 until V8LazyEventListener is actually used.
-        // m_scriptState is set lazily because V8LazyEventListener doesn't know the associated frame
-        // until the listener is actually used.
-        RefPtr<ScriptState> m_scriptState;
-        v8::Isolate* m_isolate;
-    };
-
-} // namespace WebCore
-
-#endif // V8AbstractEventListener_h