1/*
2 * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef V8LazyEventListener_h
32#define V8LazyEventListener_h
33
34#include "bindings/v8/V8AbstractEventListener.h"
35#include <v8.h>
36#include "wtf/PassRefPtr.h"
37#include "wtf/text/TextPosition.h"
38#include "wtf/text/WTFString.h"
39
40namespace WebCore {
41
42    class Event;
43    class Frame;
44    class HTMLFormElement;
45    class Node;
46
47    // V8LazyEventListener is a wrapper for a JavaScript code string that is compiled and evaluated when an event is fired.
48    // A V8LazyEventListener is either a HTML or SVG event handler.
49    class V8LazyEventListener : public V8AbstractEventListener {
50    public:
51        static PassRefPtr<V8LazyEventListener> create(const AtomicString& functionName, const AtomicString& eventParameterName, const String& code, const String& sourceURL, const TextPosition& position, Node* node)
52        {
53            return adoptRef(new V8LazyEventListener(functionName, eventParameterName, code, sourceURL, position, node));
54        }
55
56        virtual bool isLazy() const { return true; }
57
58    protected:
59        virtual void prepareListenerObject(ScriptExecutionContext*);
60
61    private:
62        V8LazyEventListener(const AtomicString& functionName, const AtomicString& eventParameterName, const String& code, const String sourceURL, const TextPosition&, Node*);
63
64        virtual v8::Local<v8::Value> callListenerFunction(ScriptExecutionContext*, v8::Handle<v8::Value> jsEvent, Event*);
65
66        // Needs to return true for all event handlers implemented in JavaScript so that
67        // the SVG code does not add the event handler in both
68        // SVGUseElement::buildShadowTree and again in
69        // SVGUseElement::transferEventListenersToShadowTree
70        virtual bool wasCreatedFromMarkup() const { return true; }
71
72        AtomicString m_functionName;
73        AtomicString m_eventParameterName;
74        String m_code;
75        String m_sourceURL;
76        Node* m_node;
77        TextPosition m_position;
78    };
79
80} // namespace WebCore
81
82#endif // V8LazyEventListener_h
83