WebKit merge 40668:40722 part 1.

third_party/WebKit/WebCore/bindings/v8/custom/V8CustomSQLTransactionCallback.cpp

+/*
+ * Copyright (c) 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.
+ */
+
+#include "config.h"
+#include "V8CustomSQLTransactionCallback.h"
+
+#include "Frame.h"
+#include "V8CustomVoidCallback.h"
+
+namespace WebCore {
+
+V8CustomSQLTransactionCallback::V8CustomSQLTransactionCallback(v8::Local<v8::Object> callback, Frame* frame)
+    : m_callback(v8::Persistent<v8::Object>::New(callback))
+    , m_frame(frame)
+{
+}
+
+V8CustomSQLTransactionCallback::~V8CustomSQLTransactionCallback()
+{
+    m_callback.Dispose();
+}
+
+
+void V8CustomSQLTransactionCallback::handleEvent(SQLTransaction* transaction, bool& raisedException)
+{
+    v8::HandleScope handleScope;
+
+    v8::Handle<v8::Context> context = V8Proxy::GetContext(m_frame.get());
+    if (context.IsEmpty())
+        return;
+
+    v8::Context::Scope scope(context);
+
+    v8::Handle<v8::Value> argv[] = {
+        V8Proxy::ToV8Object(V8ClassIndex::SQLTRANSACTION, transaction)
+    };
+
+    // Protect the frame until the callback returns.
+    RefPtr<Frame> protector(m_frame);
+
+    // Step 5: If the callback couldn't be called (e.g. it was null) or if
+    // the callback was invoked and raised an exception, jump to the last
+    // step (rollback transaction).
+    bool callbackReturnValue = false;
+    raisedException = invokeCallback(m_callback, 1, argv, callbackReturnValue);
+}
+
+} // namespace WebCore