third_party/WebKit/Source/modules/indexeddb/IDBVersionChangeEvent.cpp

/*
 * Copyright (C) 2011 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:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "modules/indexeddb/IDBVersionChangeEvent.h"

#include "modules/indexed_db_names.h"

namespace blink {

IDBVersionChangeEvent::IDBVersionChangeEvent()
    : data_loss_(kWebIDBDataLossNone) {}

IDBVersionChangeEvent::IDBVersionChangeEvent(
    const AtomicString& event_type,
    unsigned long long old_version,
    const Nullable<unsigned long long>& new_version,
    WebIDBDataLoss data_loss,
    const String& data_loss_message)
    : Event(event_type, /*can_bubble=*/false, /*cancelable=*/false),
      old_version_(old_version),
      new_version_(new_version),
      data_loss_(data_loss),
      data_loss_message_(data_loss_message) {}

IDBVersionChangeEvent::IDBVersionChangeEvent(
    const AtomicString& event_type,
    const IDBVersionChangeEventInit& initializer)
    : Event(event_type, /*can_bubble=*/false, /*cancelable=*/false),
      old_version_(initializer.oldVersion()),
      new_version_(nullptr),
      data_loss_(kWebIDBDataLossNone) {
  if (initializer.hasNewVersion())
    new_version_ = initializer.newVersion();
  if (initializer.dataLoss() == "total")
    data_loss_ = kWebIDBDataLossTotal;
}

unsigned long long IDBVersionChangeEvent::newVersion(bool& is_null) const {
  is_null = new_version_.IsNull();
  return is_null ? 0 : new_version_.Get();
}

const AtomicString& IDBVersionChangeEvent::dataLoss() const {
  if (data_loss_ == kWebIDBDataLossTotal)
    return IndexedDBNames::total;
  return IndexedDBNames::none;
}

const AtomicString& IDBVersionChangeEvent::InterfaceName() const {
  return EventNames::IDBVersionChangeEvent;
}

void IDBVersionChangeEvent::Trace(blink::Visitor* visitor) {
  Event::Trace(visitor);
}

}  // namespace blink