1/*
2 * Copyright (C) 2014 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WebScriptMessageHandler_h
27#define WebScriptMessageHandler_h
28
29#include <wtf/PassRefPtr.h>
30#include <wtf/RefCounted.h>
31#include <wtf/text/WTFString.h>
32
33namespace IPC {
34class ArgumentDecoder;
35class ArgumentEncoder;
36}
37
38namespace WebCore {
39class SerializedScriptValue;
40}
41
42namespace WebKit {
43
44class WebPageProxy;
45class WebFrameProxy;
46
47struct WebScriptMessageHandlerHandle {
48    void encode(IPC::ArgumentEncoder&) const;
49    static bool decode(IPC::ArgumentDecoder&, WebScriptMessageHandlerHandle&);
50
51    uint64_t identifier;
52    String name;
53};
54
55class WebScriptMessageHandler : public RefCounted<WebScriptMessageHandler> {
56public:
57    class Client {
58    public:
59        virtual ~Client() { }
60        virtual void didPostMessage(WebPageProxy&, WebFrameProxy&, WebCore::SerializedScriptValue&) = 0;
61    };
62
63    static PassRefPtr<WebScriptMessageHandler> create(std::unique_ptr<Client>, const String& name);
64    virtual ~WebScriptMessageHandler();
65
66    WebScriptMessageHandlerHandle handle() { return { m_identifier, m_name }; }
67
68    uint64_t identifier() const { return m_identifier; }
69    String name() const { return m_name; }
70
71    Client& client() const { return *m_client; }
72
73private:
74    WebScriptMessageHandler(std::unique_ptr<Client>, const String&);
75
76    uint64_t m_identifier;
77
78    std::unique_ptr<Client> m_client;
79    String m_name;
80};
81
82} // namespace API
83
84#endif // WebScriptMessageHandler_h
85