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/platform/external/webkit/WebCore/bindings/v8/custom/V8CustomSQLTransactionCallback.cpp

https://github.com/aharish/totoro-gb-opensource-update2
C++ | 82 lines | 32 code | 17 blank | 33 comment | 1 complexity | 99a8fae2985f1751b3f855ff0d97707a MD5 | raw file
 1/*
 2 * Copyright (c) 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#include "config.h"
32
33#if ENABLE(DATABASE)
34
35#include "V8CustomSQLTransactionCallback.h"
36
37#include "Frame.h"
38#include "V8CustomVoidCallback.h"
39#include "V8SQLTransaction.h"
40
41namespace WebCore {
42
43V8CustomSQLTransactionCallback::V8CustomSQLTransactionCallback(v8::Local<v8::Object> callback, Frame* frame)
44    : m_callback(v8::Persistent<v8::Object>::New(callback))
45    , m_frame(frame)
46{
47}
48
49V8CustomSQLTransactionCallback::~V8CustomSQLTransactionCallback()
50{
51    m_callback.Dispose();
52}
53
54
55void V8CustomSQLTransactionCallback::handleEvent(SQLTransaction* transaction, bool& raisedException)
56{
57    v8::HandleScope handleScope;
58
59    v8::Handle<v8::Context> context = V8Proxy::context(m_frame.get());
60    if (context.IsEmpty())
61        return;
62
63    v8::Context::Scope scope(context);
64
65    v8::Handle<v8::Value> argv[] = {
66        toV8(transaction)
67    };
68
69    // Protect the frame until the callback returns.
70    RefPtr<Frame> protector(m_frame);
71
72    // Step 5: If the callback couldn't be called (e.g. it was null) or if
73    // the callback was invoked and raised an exception, jump to the last
74    // step (rollback transaction).
75    bool callbackReturnValue = false;
76    raisedException = invokeCallback(m_callback, 1, argv, callbackReturnValue);
77}
78
79} // namespace WebCore
80
81#endif
82