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      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 "V8CustomSQLStatementErrorCallback.h"
     36 
     37 #include "Frame.h"
     38 #include "V8CustomVoidCallback.h"
     39 #include "V8SQLError.h"
     40 #include "V8SQLTransaction.h"
     41 
     42 namespace WebCore {
     43 
     44 V8CustomSQLStatementErrorCallback::V8CustomSQLStatementErrorCallback(v8::Local<v8::Object> callback, Frame* frame)
     45     : m_callback(v8::Persistent<v8::Object>::New(callback))
     46     , m_frame(frame)
     47 {
     48 }
     49 
     50 V8CustomSQLStatementErrorCallback::~V8CustomSQLStatementErrorCallback()
     51 {
     52     m_callback.Dispose();
     53 }
     54 
     55 bool V8CustomSQLStatementErrorCallback::handleEvent(SQLTransaction* transaction, SQLError* error)
     56 {
     57     v8::HandleScope handleScope;
     58 
     59     v8::Handle<v8::Context> context = V8Proxy::context(m_frame.get());
     60     if (context.IsEmpty())
     61         return true;
     62 
     63     v8::Context::Scope scope(context);
     64 
     65     v8::Handle<v8::Value> argv[] = {
     66         toV8(transaction),
     67         toV8(error)
     68     };
     69 
     70     // Protect the frame until the callback returns.
     71     RefPtr<Frame> protector(m_frame);
     72 
     73     bool callbackReturnValue = false;
     74     // Step 6: If the error callback returns false, then move on to the next
     75     // statement, if any, or onto the next overall step otherwise. Otherwise,
     76     // the error callback did not return false, or there was no error callback.
     77     // Jump to the last step in the overall steps.
     78     return invokeCallback(m_callback, 2, argv, callbackReturnValue) || callbackReturnValue;
     79 }
     80 
     81 } // namespace WebCore
     82 
     83 #endif
     84 
     85